[Repeater-Builder] Deviation Limiting/Linearity

2004-07-27 Thread WD7F - John in Tucson






Actually, I have two problems so it might take two 
threads. (Long-winded too...no less)

Repeater: MSR2000
Controller: CAT250 interfaced via 
Squelch Gate card.

I have been chasing my tail on two issues. 
One is deviation limiting and the other is deviation linearity. It seems 
that if the deviation is not linear when setting up IDC/Repeater Leveland 
the deviation limiting in the receiver, if has an adverse effect on the DTMF 
decoding in the VA3TO interface that I use on Echolink. IRLP and WIRES decoders 
work nearly flawlessly with the same audio. I found that the 147 side of 
the keyboard would not perform well for a lot of DTMF sources if the deviation 
didn't track pretty closely from 0 to 3 K or so. We check it by putting in 
a 1K tone @ 1K deviation, 2K deviation and 3K deviation, etc. There seems 
to be a couple of schools of thought. One, adjust IDC/Repeater level so it 
tracks 1:1, e.g., 1=1, 2=2, 3=3, 4=4, etc. The other is to check the 
deviation with no input and adjust the deviation to compensate for noise in the 
exciter, e.g., 1=1.2, 2=2.2, 3=3.2, etc. 

We have done it both ways. It's seems pretty 
tough to get the linearity AND the deviation limiter in the receiver aligned so 
that the deviaton is linear and limited to about 5K and see a 
niceundistorted audio waveform. After we had done an alignment 
and was fairly satisfied with the results, a month or so later, we began to have 
what appeared to be an intermod or spur problem which would break squelch and 
key the repeater. We thought SURE it was a noisy rig somewhere or the TV 
Channel 11 spur we found a few months ago. We chased it around several 
days. We re-soldered suspected back planepins on the R1 Audio and 
though we fixed it. Then it comes back again. Changed out the R1 
Audio card and it worked for a day or two, and it's back again! Thought it 
was the Squelch Gate card and checked every solder joint a few times. Used 
a scope to lookat everything. This morning at about 4 AM, I put my 
adjusting tool on the L201 deviation limiting adjustment in the receiver and 
cracked it a little CW (higherdeviationallowed)and the problem 
went away. I could see the audio noise waveformchange on the scope 
at the output of the receiver. I can easily find the ragged edge so I know 
it's this adjustment. I even put the suspected R1 Audio card back in and 
it works good. However, 147 won't work on K7IOUs Kenwood (again) 
nowbecause the deviation is no longer linear.

By the way, the repeater still sounds great even if 
the deviaton is not linear...so long as the limiter is working.

Canany of you "gurus" with lots of experience 
give me a hint on the alignment?Or should I throw away the VA3TO 
interface? Skipp, I have read your alignment procedure a hundred times, 
and it makes sense on paper, but I'm not confident that I'm doing it 
right.

I would think that the deviation limiting would not 
have an effect on the linearity, but it seems that it does. 

de WD7F
John in Tucson















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Re: [Repeater-Builder] Re: Deviation Limiting/Linearity

2004-07-27 Thread WD7F - John in Tucson
Well hell, I accidently sent the previous before I was finished:

As I was saying, when I said:

 I could see the audio noise waveform change on
 the scope at the output of the receiver.  I can
 easily find the ragged edge so I know it's this
 adjustment.

And you said:

No, it's not...

I have to ask:  Then what is causing the squelch to break and why did it
quit acting up when I tweaked it just a bit?  It's obvisouly not aligned
properly.  I can turn it a tad CCW until the noise increases (possibly going
into oscillation?) and breaks the squelch and then turn it back a hair CW
until it stops.  I can see the audio noise change when I hit the spot where
it goes haywire.   I have listened to this repeater for a few months with my
trusty HTX-202 so I earballed it and left it until we can get to it.  We
will do the alignment again according to the manual soon.

And you said:

As I describe in my text, above
3.5KHz (service monitor) deviated test input, the MSR2000
receiver filters start to distort the audio. You can see
it with a scope at the discriminator output.

I say:

Yep, you're perzactly right.  However, on our second attemp to set the
deviation back in March, we did have it looking pretty good up to 5K looking
at the audio at the input of the controller.  And it tracked pretty good up
to about 3.5K.  It held still for a couple months and then we had the
Channel 11 spur that drove us crazy.  It was so strong, I thought the
repeater was broken.  One day, there was noise getting through with the
antenna disconnected..  During that episode we tweaked it again and probably
messed it up.

Final comment:

Walt, WA4LDS and an engineer at Channel 4 here in Tucson noticed that when
the picture changed on our local Fox channel, the repeater noise changed.
He was instrumental in getting the Channel 11 engineer to tweak his
transmiter and it is all better now.

Thanks for the response.

de WD7F
John in Tucson



- Original Message - 
From: skipp025 [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, July 27, 2004 10:35 AM
Subject: [Repeater-Builder] Re: Deviation Limiting/Linearity


Hi John,

I'm here...

 WD7F - John in Tucson [EMAIL PROTECTED] wrote:
 Actually, I have two problems so it might
 take two threads.  (Long-winded too...no less)
 It seems that if the deviation is not linear
 when setting up IDC/Repeater Level and the
 deviation limiting in the receiver.

For the non Motorhead (Motorola) people, IDC is
the channel element contained deviation control.

The repeater in-out deviation will never be (track)
linear on any repeater ever. There are at least
three wild cards in your problem list. The first
is the receiver bandwidth and any included
(if used) de-emphasis circuit.

The other wild cards are the transmitter (both the
users radio and the repeater transmitter) pre-emphasis
circuits.  When these values get really wacked out, we
run into an unbalanced tone level (dtmf is made from
two tones) called twist.

A big abuser is excessive or user radio over deviation.
Most people don't realize how little audio is actually
required for proper dtmf and sub-tone (PL) decoding.
There are standards, but most out of the box user radios
are set excessively hot.

Specific to your MSR-2000 and Cat Controller.

Know the receiver IF filters are tight. You will not get
a good detected waveform with any voice audio deviated
signal above 4KHz (without sub tone). So don't try...
The statement just above is much of your problem. You
also didn't say how you set the receiver on frequency.

John,
Again set the repeater up as described in my MSR2000 to
external controller text, easily found at
http://www.radiowrench.com/sonic

Then follow what I write below (after a few
more comments).

 it has an adverse effect on the DTMF decoding
 in the VA3TO interface that I use on Echolink.
 IRLP and WIRES decoders work nearly flawlessly
 with the same audio.

This might tell you about a level and twist problem
with at the dtmf decoders.  A scope at the controller
dtmf decoder chip input will give you the real answer.

 I found that the 147 side of the keyboard would
 not perform well for a lot of DTMF sources if
 the deviation didn't track pretty closely from
 0 to 3 K or so.

It's probably more than a deviation tracking
problem.

 We check it by putting in a 1K tone @ 1K deviation,
 2K deviation and 3K deviation, etc.  There seems to
 be a couple of schools of thought.

Yep...

 One, adjust IDC/Repeater level so it tracks 1:1, e.g.,
 1=1, 2=2, 3=3, 4=4, etc.

Close, but no cigar.  You have to know the preformance
of your receiver filter. As I describe in my text, above
3.5KHz (service monitor) deviated test input, the MSR2000
receiver filters start to distort the audio. You can see
it with a scope at the discriminator output.

Everyone setting up a receiver should know how that
receiver preforms at X value input deviation.

Your target value 1:1 deviation ratio for the the MSR is
about 3KHz (set at one

Re: [Repeater-Builder] Motorola TPN-1106A

2004-08-02 Thread WD7F - John in Tucson
Do you suppose it's the same board as in the TRN1192A?  Probably not.  The
TRN5120A has a pulse tone output when the power supply is on backup power.
Anyway, if it is a 5120 or equivalent, I can e-mail you the schematic.

de WD7F
John in Tucson

- Original Message - 
From: Kevin Berlen, K9HX [EMAIL PROTECTED]
To: [EMAIL PROTECTED]
Cc: Repeater-Builder@yahoogroups.com
Sent: Sunday, August 01, 2004 8:59 PM
Subject: [Repeater-Builder] Motorola TPN-1106A


I am in need of the schematic for the board in a Motorola TPN-1106A power
supply
that is added on the emergency power option models. I want to use the
signal that
turns the audio tone on when the base is on battery, and run that to a
logic input
on my controller. I would like to be able to add a tail message when we are
on
emergency power. I have the diagram from the Repeater Builder site
downloaded,
but I dont find this optional board on schematic. I would like an original
copy of
the manual with this option if anyone has a spare. Other wise a scanned copy
sent via e-mail or a photo copy sent via USPS would work. Please let me know
if you can help and what the costs are. TIA and 73,

Kevin, K9HX






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Re: [Repeater-Builder] Question for the group

2004-08-11 Thread WD7F - John in Tucson





Yep, it shoulda been converted in 1985 or 
about. Didn't they send you a new certificate?

I tried Slusser, John and got my radiotelephone 
license. The database doesn't show the radar endorsement. Don't know 
why, however, I haven't needed it. To find my ham call I had to use 
Slusser Sr, John. Then it found it. Interesting that when is 
searched by call I found a WD7FM, a radio control club in Riverside, CA. 
Neat.

de WD7F
John in Tucson



  - Original Message - 
  From: 
  Paul Finch 
  
  To: Repeater-Builder@yahoogroups.com 
  
  Sent: Wednesday, August 11, 2004 7:19 
  AM
  Subject: RE: [Repeater-Builder] Question 
  for the group
  
  I 
  still can't find my "General" radiotelephone license! I wonder if it was 
  cancelled! I kept it up for the whole time until it was ported over to 
  the General class useless thing, I would like to know it's still there. 
  I also though it had been converted to lifetime!
  
  Paul
  
-Original Message-From: Marvin K. Hoffman 
[mailto:[EMAIL PROTECTED]Sent: Wednesday, August 11, 2004 
8:36 AMTo: Repeater-Builder@yahoogroups.comSubject: 
Re: [Repeater-Builder] Question for the groupI found my 
old General Radiotelephone that was converted to lifetime in 1985. No 
record of the old 1st and 2nd Class Radiotelephone, however.Use 
"last name, first name" on the search.Marv Hoffman, 
WA4NCPG057703Paul Finch wrote:
Got this off the Tower Pro group, check out this site for you questions.

http://wireless2.fcc.gov/UlsApp/UlsSearch/searchLicense.jsp

I have not been able to find my old FCC license, found my Ham license but no
General Radiotelephone!

Paul


-Original Message-
From: Russ Hines [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, August 11, 2004 12:41 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Question for the group


Hi Frank:

The First Class Radiotelephone Operator's License was replaced with
the General Radiotelephone Operator's License nearly 20 years ago.
Approximately equivalent to the old 2nd Class license, the GROL is
only needed for aviation, marine, and international public fixed
stations.

These days, one does not need any license to work as a tech at a
broadcast station, radio or TV.  The FCC put the responsibility for
proper operation of a station's transmitter in the hands of the
station licensee, and leaves it up to them to hire competent techs.
This was part of deregulation back during the Reagan Administration.

I'm not aware of any database for commercial licensees, but if there
is one, I'd guess either the FCC, NARTE, ISCET or NRE might likely
post it on the web.

Hope this helps.

73,
Russ
WB8ZCC



- Original Message -
From: "Frank or Barb" [EMAIL PROTECTED]
To: "List Server repeater-builder"
repeater-builder@yahoogroups.com
Sent: Wednesday, August 11, 2004 1:18 AM
Subject: [Repeater-Builder] Question for the group


  
  I have a neighbor who works for a cellular carrier, and had the
old FCC
  
  First Class Radio Telephone license.
First question, is that license still required for techs at tv and
radio
  
  stations or did the FCC drop the requirement?
Is there a place on the web to search a license database?
They are not listed in the ULS web site.
Thanks
N3FLR - Frank





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Re: [Repeater-Builder] Question for the group

2004-08-11 Thread WD7F - John in Tucson





Kevin,
I heard that they had accepted the article 
submitted by K7IOU. Didn't know the Sep. issue was out.
Thanks.
John in Tucson


  - Original Message - 
  From: 
  Kevin Bednar 
  To: Repeater-Builder@yahoogroups.com 
  
  Sent: Wednesday, August 11, 2004 8:14 
  AM
  Subject: RE: [Repeater-Builder] Question 
  for the group
  
  John,
  Saw your pic and the article on you in Sept's 
  QST. Congrats OM! ;)
  
  Kevin
  K2KMB in Sparta NJ
  (I've talked to you on Echolink on my machine, and on 
  Earl's once or twice.) ;)
  
  
  
  From: WD7F - John in Tucson 
  [mailto:[EMAIL PROTECTED] Sent: Wednesday, August 11, 2004 11:13 
  AMTo: Repeater-Builder@yahoogroups.comSubject: 
  Re: [Repeater-Builder] Question for the group
  
  Yep, it shoulda been converted in 1985 or 
  about. Didn't they send you a new certificate?
  
  I tried Slusser, John and got my radiotelephone 
  license. The database doesn't show the radar endorsement. Don't 
  know why, however, I haven't needed it. To find my ham call I had to use 
  Slusser Sr, John. Then it found it. Interesting that when is 
  searched by call I found a WD7FM, a radio control club in Riverside, CA. 
  Neat.
  
  de WD7F
  John in Tucson
  
  
  
- Original Message - 
From: 
Paul 
Finch 
To: Repeater-Builder@yahoogroups.com 

Sent: Wednesday, August 11, 2004 7:19 
AM
Subject: RE: [Repeater-Builder] 
Question for the group

I 
still can't find my "General" radiotelephone license! I wonder if it 
was cancelled! I kept it up for the whole time until it was ported 
over to the General class useless thing, I would like to know it's still 
there. I also though it had been converted to 
lifetime!

Paul

  -Original Message-From: Marvin K. Hoffman 
  [mailto:[EMAIL PROTECTED]Sent: Wednesday, August 11, 2004 
  8:36 AMTo: Repeater-Builder@yahoogroups.comSubject: 
  Re: [Repeater-Builder] Question for the groupI found 
  my old General Radiotelephone that was converted to lifetime in 
  1985. No record of the old 1st and 2nd Class Radiotelephone, 
  however.Use "last name, first name" on the search.Marv 
  Hoffman, WA4NCPG057703Paul Finch wrote:
  Got this off the Tower Pro group, check out this site for you questions.

http://wireless2.fcc.gov/UlsApp/UlsSearch/searchLicense.jsp

I have not been able to find my old FCC license, found my Ham license but no
General Radiotelephone!

Paul


-Original Message-
From: Russ Hines [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, August 11, 2004 12:41 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Question for the group


Hi Frank:

The First Class Radiotelephone Operator's License was replaced with
the General Radiotelephone Operator's License nearly 20 years ago.
Approximately equivalent to the old 2nd Class license, the GROL is
only needed for aviation, marine, and international public fixed
stations.

These days, one does not need any license to work as a tech at a
broadcast station, radio or TV.  The FCC put the responsibility for
proper operation of a station's transmitter in the hands of the
station licensee, and leaves it up to them to hire competent techs.
This was part of deregulation back during the Reagan Administration.

I'm not aware of any database for commercial licensees, but if there
is one, I'd guess either the FCC, NARTE, ISCET or NRE might likely
post it on the web.

Hope this helps.

73,
Russ
WB8ZCC



- Original Message -
From: "Frank or Barb" [EMAIL PROTECTED]
To: "List Server repeater-builder"
repeater-builder@yahoogroups.com
Sent: Wednesday, August 11, 2004 1:18 AM
Subject: [Repeater-Builder] Question for the group


  
I have a neighbor who works for a cellular carrier, and had the
old FCC
  
First Class Radio Telephone license.
First question, is that license still required for techs at tv and
radio
  
stations or did the FCC drop the requirement?
Is there a place on the web to search a license database?
They are not listed in the ULS web site.
Thanks
N3FLR - Frank





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Re: [Repeater-Builder] Patch lead lengh between cavities ?

2004-08-18 Thread WD7F - John in Tucson
We used 1/4 and made sure to include velocity factor of the coax.  Don't
know the technical term for the type of cans, but the passband was set with
the cavity and the notch was set with the probe.  We used a vector volt
meter to get them pretty darned close, a set for the transmit and a set for
the receive. All of the probes came in except a couple had to be shortened.
The commercial jumpers that were used when the bongos were converted to ham
band were too short for our 146.34/.94, but they had been tuned originally
as far as I know.  When we built a new set of jumpers, we had to retune all
six.

de WD7F
John in Tucson

- Original Message - 
From: Eric Lemmon [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, August 17, 2004 6:08 PM
Subject: Re: [Repeater-Builder] Patch lead lengh between cavities ?



Dave,

There is no pat answer to your question, because the optimum length of
the jumpers depends not just upon the operating frequencies or the
design of the cavities, but also upon the physical length of the loops
or probes within the cavities.  The optimum jumper lengths are not the
same for loops as for probes.  Therefore, duplexers of identical design,
but from different manufacturers, may require different jumper lengths
to achieve optimum performance.  It's always best to ask the
manufacturer what lengths are correct for the given frequencies.

73, Eric Lemmon WB6FLY

dave_g7uzn wrote:

 Hi Group, I know this question has probably been asked before, but should
the patch leads connecting cavity filters be 1/4 or 1/2 wave in length
please? We are having problems with a new 2M repeater just south east of
London and any help would be much appreciated.





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Re: [Repeater-Builder] Re: Astron Supply Help

2004-08-31 Thread WD7F - John in Tucson
As a troubleshooting technique, you can plug in one pass transistor at a
time and the power supply will work so that you can measure voltage on the
output.  I have had strange things happen to an Astron 35 which has included
a single pass transistor shorting out, a resistor in the reference voltage
divider increasing it's resistance and causing the voltage to drop to about
8V max.  Good luck.  I've got one that took a power surge last spring during
a lightning storm and I haven't found the problem yet.  I just bought
another one.

de WD7F
John in Tucson

- Original Message - 
From: motarolla_doctor [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, August 31, 2004 1:02 PM
Subject: [Repeater-Builder] Re: Astron Supply Help


  reinstalling the TO-3 mount
 pass transistors with a thin flim of heat sink
 grease on the insulator and mate surfaces.

I use the clear heatsink grease
Also, I allways add a star or shake proof lock washer on each pass
transistor mounting screws. This helps keep the transistor
collector and the socket in good contact under hot conditions.

replace the entire reg board with Skipp's upgraded circuit.
This helps too.







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Re: [Repeater-Builder] 600 - 10k ohm Interface

2004-12-12 Thread WD7F - John in Tucson






You guys are all purists. Hook it up and see 
if it works.
de WD7F
John in Tucson


  - Original Message - 
  From: 
  Chuck Kelsey 
  
  To: Repeater-Builder@yahoogroups.com 
  
  Sent: Sunday, December 12, 2004 4:47 
  PM
  Subject: Re: [Repeater-Builder] 600 - 10k 
  ohm Interface
  
  I believe Radio Shack sells a matching 
  transformer that will work.
  
  Chuck
  WB2EDV
  
  
  
  
- Original Message - 
From: 
Kevin  
Natalia 
To: Repeaters Users Group ; Repeater Builder Users 
Group 
Sent: Sunday, December 12, 2004 6:14 
PM
Subject: [Repeater-Builder] 600 - 10k 
ohm Interface

Hi All,

I need a simple interface for a 600 ohm output radio to a controller 
which accepts 10k ohm.
This isa RX not TX.

I don't want to make a circuit board if I don't need to.

Any ideas?

Regards

Kevin.














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Re: [Repeater-Builder] formula for DB -Power

2005-06-06 Thread WD7F - John in Tucson
Power gain = 10log P-Out/P-In

- Original Message - 
From: Ken Arck [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, June 06, 2005 9:42 AM
Subject: Re: [Repeater-Builder] formula for DB -Power


At 11:22 AM 6/6/2005 -0500, you wrote:
well for some reason i just can not think of this. or im getting to old
,,hehe

what is the formula for DB ( power )?

---Here's a link:

https://ewhdbks.mugu.navy.mil/decibel.htm

Ken


--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
It was great to meet many of you at Dayton 2005!
We offer complete Kenwood TKR repeater packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net





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Re: [Repeater-Builder] Micor mobile manual/schematic sought

2005-06-20 Thread WD7F - John in Tucson
Here's the deal.  The repeater we are converting is a Securenet Digital
Voice Protection System Micor Repeater Station.  The exciter for this
station is different from the TLD8262B exciter (and others there) as shown
in Kevins Micor Conversion site
http://www.repeater-builder.com/rbtip/micor-index.html.  So, we WERE
(operative word) looking for the schematic of the mobile exciter (TLD8262B)
so we could compare the component numbers and values (which are different)
with the newer TLD5803B that we're converting without having to draw the
circuit from the PC layout we have on hand.

Hope that clarifies what we were looking for and why.

de WD7F
John in Tucson

- Original Message - 
From: Jim B. [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, June 20, 2005 9:20 AM
Subject: Re: [Repeater-Builder] Micor mobile manual/schematic sought


Budd Turner wrote:
From another discussion group:  TnT (222 in Tucson) Group
 Please reply to  [EMAIL PROTECTED]
 Subject: micor mobile exciter schematic  nospamk7iou

 Does anyone have a micor mobile (Trunked) manual? I need a schematic
 for the exciter (TLD8262B) as our repeater has a different model
 exciter due to the DVP. Since the 220 MHz conversion was done on the
 mobile exciter I need the schematic to convert it our exciter.
 73
 Dave
 http://home.comcast.net/~micorrepeater/

 73
 Budd : N7EOJ
 TnT (222 in Tucson) Group owner

The exciter model tells me it's VHF high-band. It will not be a trunked
radio, maybe he means trunk-mount?
And DVP means Digital Voice Protection, Motorola's term for digital
speech encryption.

-- 
Jim Barbour
WD8CHL






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Re: [Repeater-Builder] Micor mobile manual/schematic sought

2005-06-21 Thread WD7F - John in Tucson
Thanks Mark, we have received the schematic from Larry, WA4FOB.  Note, I did
say that we WERE looking for the schematic.  Guess I should have been
clearer.

de WD7F
John in Tucson

- Original Message - 
From: N9WYS [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, June 20, 2005 10:18 PM
Subject: RE: [Repeater-Builder] Micor mobile manual/schematic sought


John,

I have the manual for the Micor VHF mobile.  (68P81008E40-N)  Unfortunately,
my primary computer (the one with the scanner attached) is on the Fritz
right now, so I can't scan in any pages for you.

Hopefully I will have it going again in a couple of days.  (I had to wait
for a few days off from work before I could start the rebuilding process...)
However, if you think we can do this via e-mail, contact me off-list - maybe
I can provide the answers you need without too much trouble.

Mark - N9WYS
n9wys (at) ameritech (dot) net

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] Behalf Of WD7F - John in
Tucson
Sent: Monday, June 20, 2005 12:00 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Micor mobile manual/schematic sought


Here's the deal.  The repeater we are converting is a Securenet Digital
Voice Protection System Micor Repeater Station.  The exciter for this
station is different from the TLD8262B exciter (and others there) as shown
in Kevins Micor Conversion site
http://www.repeater-builder.com/rbtip/micor-index.html.  So, we WERE
(operative word) looking for the schematic of the mobile exciter (TLD8262B)
so we could compare the component numbers and values (which are different)
with the newer TLD5803B that we're converting without having to draw the
circuit from the PC layout we have on hand.

Hope that clarifies what we were looking for and why.

de WD7F
John in Tucson






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Re: [Repeater-Builder] TLD5322 Exciter is on all the time, is there another way

2005-08-19 Thread WD7F - John in Tucson
That's interesting to know Mathew.  We're in the process of putting a
converted hi band VHF Micor on 220 and as it is set up now, the exciter is
keyed.  I would guess that it wouldn't be much of a delay anyway.  The final
stage of the exciter is keyed with keyed A- and I believe the xtal module is
keyed ( I think, but I don't remember) as well.  If I had that problem, I
would hook up the key line again.  In the bench test configuration, I do
know that with the final stage unkeyed and the xtal module oscillating, we
have about 7 mW at the output of the exciter.  You probably could hear that
a few miles.  However, isn't the PA keyed and unkeyed?



de WD7F
John in Tucson

- Original Message - 
From: n9lv [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, August 19, 2005 8:52 AM
Subject: [Repeater-Builder] TLD5322 Exciter is on all the time, is there
another way


I have a motorola micor repeater that has the exciter keyed up all the
time, the TLD5322.  I'm told if it is not setup like this that it will
have a delay in the keyup. The signal can be heard for a few miles
from the repeater site.  Is there another alternative to this?

Mathew










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Re: [Repeater-Builder] putting a bigger heat shrink on a radio?

2005-12-13 Thread WD7F - John in Tucson
I can see how it might be constured as heatshrink.  That's like the guy in
the TV commercial and French benefits...You mean we don't get French
benefits? ;-)



- Original Message - 
From: Jim B. [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, December 13, 2005 9:30 AM
Subject: Re: [Repeater-Builder] putting a bigger heat shrink on a radio?


Lee Jones wrote:

 Heres a question for someone to answer, IF you were to take say a gm300
 45 watt radio and take say a lowband heatshrink from a maxtrac would
 the bigger heat shrink help disipate the heat better or would it not
 make a diference?

You want a heat sink, not heat shrink tubing...
-- 
Jim Barbour
WD8CHL






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Re: [Repeater-Builder] Re: DR-235 for repeater

2005-12-17 Thread WD7F - John in Tucson
David, what do you mean by:

On a one-way setup, you definitely get discriminator output.  When coupled
to the second rig, the conditioning takes place.?

Which output are you talking about?  I guess my question is: Other than the
specified signal levels, what IS the difference between the 1200 baud audio
out and the 9600 baud audio out?

de WD7F
John in Tucson


- Original Message - 
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, December 17, 2005 9:57 AM
Subject: Re: [Repeater-Builder] Re: DR-235 for repeater


I also had the same concerns.

However, I found that the treatment after the discriminator on the
respective radios applied the conditioning to make the interface
transparent to the ear.

We have tested in-band range extenders using antenna separation to extend
the range of simplex communications by using a pair of 2 meter rigs
connected data port to data port.  I have also done similar experiments
going from 6M SSB to 2m Simplex and back.

The audio quality does not have the thin quality you would expect;
reinforcing the concept that the radio does the conditioning after the
discriminator to the user interface (speaker and audio controls on the
receiver).

It took me a long time to finally accept that this was the case before even
trying to use the data ports for user audio.

On a one-way setup, you definitely get discriminator output.  When coupled
to the second rig, the conditioning takes place.

David
KD4NUE

- Original Message - 
From: Bob Witte K0NR [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, December 17, 2005 11:05 AM
Subject: [Repeater-Builder] Re: DR-235 for repeater


 With regard to interfacing radios via packet data ports.
 Has anyone looked at the audio flatness of these ports?
 Also, some rigs have a 1200 baud in/out and a 9600 baud
 in/out, which (apparently) have very different audio levels.
 I suspect there are other characteristics that are different, too.

 73, Bob K0NR

 --- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote:

 Andy,

 I have not personally done this, but the data out connector should
 suply pins for audio in , audio out, Squelch voltage or logic
 and a reference ground.  These signals should provide everything
 you should need for direct linking of 2 radios.  The DB9 is easy
 to work with.

 Since these were designed for packet use, the audio is not
 affected by front panel controls.  It is conditioned and altered
 after it enters the TNC; or
 in this case, the other rig.

 I have set up crossband repeaters using data connectors from other
 brands, and it works well with little external manipulation.

 Attached is the page from the manual describing pin function for
 the DB9 connector.  Email me if it doesn't go through.

 David
 KD4NUE












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Re: [Repeater-Builder] Re: DR-235 for repeater

2005-12-17 Thread WD7F - John in Tucson
Thanks...good info.
John

- Original Message - 
From: Ken Arck [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, December 17, 2005 10:26 AM
Subject: Re: [Repeater-Builder] Re: DR-235 for repeater


At 10:21 AM 12/17/2005 -0700, you wrote:

Which output are you talking about?  I guess my question is: Other than the
specified signal levels, what IS the difference between the 1200 baud audio
out and the 9600 baud audio out?

---9600 baud, by its very nature, requires that received audio is actually
discriminator audio, with no deemphasis of any sort. 1200 baud audio on the
other hand, is generally deemphasized. The corollary is also true. 9600 Tx
audio isn't preemphasized, whereas 1200 is.

Ken

--
President and CTO - Arcom Communications
Makers of state-of-the-art repeater controllers and accessories.
http://www.ah6le.net/arcom/index.html
We offer complete Kenwood TKR repeater packages!
We are now an authorized Telewave Dealer!
AH6LE/R - IRLP Node 3000
http://www.irlp.net





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Re: [Norton AntiSpam] Re: [Repeater-Builder] Multimeter for $2.99

2005-12-27 Thread WD7F - John in Tucson





Gee whiz! Why do you require all that 
accuracy? When I stick the probes in the wall outlet, if I see a voltage 
between 100 and 125, I'm happy, and if it's "0", then I know somethings 
wrong. I paid a whopping $4.99 for mine at ACE and it has done me service 
many times when I just wanted to see if 12 volts or 5 volts was there or was the 
signal zero, etc. I'll bet I can tell if your car battery is dead or if 
it'scharging. And it's good for continuity and gets you in the 
ballpark for resistance. What do you expect for $2.99?

de WD7F 
John in Tucson

- Original Message - 
From: Thomas Oliver 
To: Repeater-Builder@yahoogroups.com 

Sent: Tuesday, December 27, 2005 9:44 PM
Subject: RE: [Norton AntiSpam] Re: [Repeater-Builder] Multimeter for 
$2.99






  - Original Message - 
  From: 
  Mike Morris 
  
  To: Repeater-Builder@yahoogroups.com
  Sent: 12/27/2005 7:27:57 PM 
  Subject: [Norton AntiSpam] Re: 
  [Repeater-Builder] Multimeter for $2.99
  
  I have a Harbor Freight store about 2 miles from 
  meI had one of the Centech cheapens and didn't bother 
  replacing it after it died. The AC volts scale was way off on it 
  from the day I opened the box... 118vAC on my Fluke DVM or my Simpson 260 
  read 124v on the Centech.
  
  
Yea a man with two watches never knows what time it is, Seriously 
  though if you were checking to see if voltage is present or if a 
  fuse is good or not or if a feed line is shorted or not it would be adequate. 
  I am meter poor around here but I bought a couple anyway to give to my 
  customers to check fuses with. Heck I don't even think you can get a test 
  light (battery powered)for $2.99. It has a one year warranty but 
  it would probably cost more than $2.99 to mail it back to them. 
  
  
  tom n8ies
  
  
  
  
  If I were going to buy one I'd take another meter and some 
  test samples: a 9v DC battery and both a 100 ohm and a 10k resistor 
  with me to the store... I'd read the store's AC voltage with my meter, 
  then pop open the Centech box there in the store and use it to read the AC 
  voltage, the 9v battery and the two resistors against known values 
  (i.e. your other meter).Mike WA6ILQAt 03:54 PM 12/27/05, you 
  wrote:
  Harbor Freight Tool has these on 
sale right now for $2.99 good little beater meter the leads suck 
though. Would be great tool for repeater sites or EOC's Comand centers 
ect.tom n8ieshttp://www.data-nation.com/index.asp?redirect=centech.asp 
picture here.
7-Function Multitester 
Features:

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[Repeater-Builder] TKR-820 PL Control

2006-10-23 Thread WD7F - John in Tucson
Anyone know offhand if it's possible to control the PL during non-COS
transmissions with the TX PLL EN  on the TX PLL Unit of the Kenwood TKR-820?
Or, does anyone know a tried  true method to perform this task?

Thanks,
John in Tucson

















 
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Re: [Repeater-Builder] Re: TKR-820 PL Control

2006-10-25 Thread WD7F - John in Tucson


John P Slusser wrote:
 Thanks.  I'm going to try that on the internal PLL unit.  If that
 doesn't work I'll acquire an external encoder.  I'm going to try to
 link using DPL and use PL for user repeater access.  This will be a
 first for me.  I was hoping that someone had in-depth experience with
 the Kenwood and might share a method.

 John in Tucson

I couldn't tell you which pin it is, but encode tone is available on one
of the connectors on the tone panel/controller board in the top of the
repeater (the board were the tone EEPROM is located). You should be able
to find it with the manual and either interrupt it, or pull it to ground
when no tone is desired. Then just bring the control line for that out a
spare pin on the molex on the back where everything else plugs in. There
is one or two that can be used.

-- 
Jim Barbour
WD8CHL

Rgr.  I opened it up yesterday evening and found the enable on the module
responsible for encoding.  And that signal originates in the tone panel as
you mention.  I'm going to test that theory first.  Also, I want to see how
disabling the PL will effect the squelch heard on a user's radio.  I still
may elect to use an external encoder if my experiement is not so succssful.

Thanks.
WD7F
John in Tucson











 
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Re: [Repeater-Builder] Re: TKR-820 PL Control

2006-10-25 Thread WD7F - John in Tucson
Thanks Juan.  If I understand you correctly, it should work as I speculate.
John in Tucson

- Original Message - 
From: Juan Tellez [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, October 25, 2006 1:43 PM
Subject: RE: [Repeater-Builder] Re: TKR-820 PL Control


The green wire is the encode tone, just ground it or put a SPST switch
of your choice and control it with your controller or with COR from the
receiver, myself do it from the controller, and for not using any of the
outputs, I use the audio switch voltage that control the repeat audio so it
will be active with appropriate signal at the repeater input.

Hope this info helps.

Juan


Asunto: Re: [Repeater-Builder] Re: TKR-820 PL Control

John P Slusser wrote:
 Thanks.  I'm going to try that on the internal PLL unit.  If that
 doesn't work I'll acquire an external encoder.  I'm going to try to
 link using DPL and use PL for user repeater access.  This will be a
 first for me.  I was hoping that someone had in-depth experience with
 the Kenwood and might share a method.

 John in Tucson






 
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Re: [Repeater-Builder] TKR-820 PL Control

2006-10-25 Thread WD7F - John in Tucson
Yes, I have the PDF manual. Thanks anyway.
de WD7F
John in Tucson

- Original Message - 
From: N9WYS [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, October 25, 2006 5:32 PM
Subject: RE: [Repeater-Builder] TKR-820 PL Control


John,

Do you have the manual for this repeater?  (Sorry - I've been only kinda
following this thread...)  If not, I have it in PDF on my ftp server.  Let
me know if you need access to it and I can set it up for you.

E-mail direct to:
n9wys at ameritech dot net

Mark - N9WYS

-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of WD7F - John in Tucson
Sent: Wednesday, October 25, 2006 2:27 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: TKR-820 PL Control



John P Slusser wrote:
 Thanks.  I'm going to try that on the internal PLL unit.  If that
 doesn't work I'll acquire an external encoder.  I'm going to try to
 link using DPL and use PL for user repeater access.  This will be a
 first for me.  I was hoping that someone had in-depth experience with
 the Kenwood and might share a method.

 John in Tucson

I couldn't tell you which pin it is, but encode tone is available on one
of the connectors on the tone panel/controller board in the top of the
repeater (the board were the tone EEPROM is located). You should be able
to find it with the manual and either interrupt it, or pull it to ground
when no tone is desired. Then just bring the control line for that out a
spare pin on the molex on the back where everything else plugs in. There
is one or two that can be used.

-- 
Jim Barbour
WD8CHL

Rgr.  I opened it up yesterday evening and found the enable on the module
responsible for encoding.  And that signal originates in the tone panel as
you mention.  I'm going to test that theory first.  Also, I want to see how
disabling the PL will effect the squelch heard on a user's radio.  I still
may elect to use an external encoder if my experiement is not so succssful.

Thanks.
WD7F
John in Tucson







 
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Re: [Repeater-Builder] Re: TKR-820 PL Control

2006-10-25 Thread WD7F - John in Tucson
Yeah...I may use a relay.  The TX PL EN wasn't the thing I needed.  However,
the green wire was it.  (Thanks Juan) I figure it's not a big deal to
short it out because it's the wiper of a 47K pot, not the direct output of
an amp.  I tried it this evening and it works.   The signal level was about
170 mV nominal.  Now, I have to switch it with COR which is available in
that module too.  So, I'm thinking I'll use a reed relay to do the job.  It
should be quick enough.  What's good about it is the regular PL works as
advertised while DPL can be switched on with COR.   So the plan is to link
with DPL and let the repeater do it's regular thing with PL.

Thanks Skipp.
de WD7F
John


- Original Message - 
From: skipp025 [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, October 25, 2006 7:41 PM
Subject: [Repeater-Builder] Re: TKR-820 PL Control



 The green wire is the encode tone, just ground it or put
 a SPST switch of your choice and control it with your
 controller or with COR from the receiver,

I vote for the relay spdt or dpdt method... even using a 4.7k
resistor as a termination.  Maybe not in this case... but
it's not always wise to ground an (audio) amplifier output. A
220pf disc cap over the 4.7k load resistor keep stray rf under
control.

cheers,
skipp









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Re: [Repeater-Builder] TKR-820 PL Control

2006-10-28 Thread WD7F - John in Tucson
Mark (or anyone on the list), is there a Kenwood manual that explains events
in the repeater concerned with muting, PL  DPL, etc.?  I have successfully
controled DPL (Tone) on the transmitter to facilitate linking using digital
PL so that there's not tone transmitted unless there is a valid received
signal.  It appears to be pretty clean, but one of the locals that uses
Motorola radios says something about the 46 Hz is missingstands to
reason since I kill the tone as soon as the COS is dropped.   I undestand
that during a normal transmitter unkey, there is reverse burst or 46 Hz
transmission or something like that to squelch compatible receivers.

Sure would like a clear explanation of that.  If I knew what I was looking
for I might figure out how the signaling unit functions in that respect and
come up with a method to make a clean Motorola squelch sequence contolled by
COS.

Any help would be appreciated.

de WD7F
John in Tucson



- Original Message - 
From: N9WYS [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, October 25, 2006 5:32 PM
Subject: RE: [Repeater-Builder] TKR-820 PL Control


John,

Do you have the manual for this repeater?  (Sorry - I've been only kinda
following this thread...)  If not, I have it in PDF on my ftp server.  Let
me know if you need access to it and I can set it up for you.

E-mail direct to:
n9wys at ameritech dot net

Mark - N9WYS

-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of WD7F - John in Tucson
Sent: Wednesday, October 25, 2006 2:27 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: TKR-820 PL Control



John P Slusser wrote:
 Thanks.  I'm going to try that on the internal PLL unit.  If that
 doesn't work I'll acquire an external encoder.  I'm going to try to
 link using DPL and use PL for user repeater access.  This will be a
 first for me.  I was hoping that someone had in-depth experience with
 the Kenwood and might share a method.

 John in Tucson

I couldn't tell you which pin it is, but encode tone is available on one
of the connectors on the tone panel/controller board in the top of the
repeater (the board were the tone EEPROM is located). You should be able
to find it with the manual and either interrupt it, or pull it to ground
when no tone is desired. Then just bring the control line for that out a
spare pin on the molex on the back where everything else plugs in. There
is one or two that can be used.

-- 
Jim Barbour
WD8CHL

Rgr.  I opened it up yesterday evening and found the enable on the module
responsible for encoding.  And that signal originates in the tone panel as
you mention.  I'm going to test that theory first.  Also, I want to see how
disabling the PL will effect the squelch heard on a user's radio.  I still
may elect to use an external encoder if my experiement is not so succssful.

Thanks.
WD7F
John in Tucson








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Checked by AVG Free Edition.
Version: 7.1.408 / Virus Database: 268.13.11/496 - Release Date: 10/24/2006






 
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Re: [Repeater-Builder] TKR-820 PL Control

2006-10-28 Thread WD7F - John in Tucson
Thanks Eric.  At least I understand the basics now.
John in Tucson

- Original Message - 
From: Eric Lemmon [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, October 28, 2006 7:52 AM
Subject: RE: [Repeater-Builder] TKR-820 PL Control


John,

Reverse burst is used only in CTCSS, AKA PL tone.  When digital subaudible
coding (CDCSS, AKA DPL) is used, a 134 Hz analog tone is transmitted at
the end of the message to close the squelch.  In both CTCSS and CDCSS, the
transmitter carrier is held on for 180 milliseconds or so after PTT is
released, so that the CTCSS tone can be shifted in phase (reverse burst) or
the CDCSS turnoff tone of 134 Hz can be sent.  Either scheme will mute the
receiver's audio while the carrier is still present, eliminating the
annoying squelch crash that would otherwise occur.

One possible benefit of using CDCSS on a linked repeater network, where each
repeater uses a different digital code, is that the 134 Hz turnoff tone is
common to all CDCSS codes, causing every linked repeater to mute at the same
time rather than sequentially.  The down side, of course, is that relatively
few radios made for the Amateur Radio market have either CDCSS with the 134
Hz turnoff tone or CTCSS with reverse burst capability.

73, Eric Lemmon WB6FLY


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of WD7F - John in Tucson
Sent: Saturday, October 28, 2006 7:25 AM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] TKR-820 PL Control

Mark (or anyone on the list), is there a Kenwood manual that explains events
in the repeater concerned with muting, PL  DPL, etc.?  I have successfully
controled DPL (Tone) on the transmitter to facilitate linking using digital
PL so that there's not tone transmitted unless there is a valid received
signal.  It appears to be pretty clean, but one of the locals that uses
Motorola radios says something about the 46 Hz is missingstands to
reason since I kill the tone as soon as the COS is dropped.   I undestand
that during a normal transmitter unkey, there is reverse burst or 46 Hz
transmission or something like that to squelch compatible receivers.

Sure would like a clear explanation of that.  If I knew what I was looking
for I might figure out how the signaling unit functions in that respect and
come up with a method to make a clean Motorola squelch sequence contolled by
COS.

Any help would be appreciated.

de WD7F
John in Tucson



- Original Message - 
From: N9WYS [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, October 25, 2006 5:32 PM
Subject: RE: [Repeater-Builder] TKR-820 PL Control


John,

Do you have the manual for this repeater?  (Sorry - I've been only kinda
following this thread...)  If not, I have it in PDF on my ftp server.  Let
me know if you need access to it and I can set it up for you.

E-mail direct to:
n9wys at ameritech dot net

Mark - N9WYS

-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of WD7F - John in Tucson
Sent: Wednesday, October 25, 2006 2:27 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: TKR-820 PL Control



John P Slusser wrote:
 Thanks.  I'm going to try that on the internal PLL unit.  If that
 doesn't work I'll acquire an external encoder.  I'm going to try to
 link using DPL and use PL for user repeater access.  This will be a
 first for me.  I was hoping that someone had in-depth experience with
 the Kenwood and might share a method.

 John in Tucson

I couldn't tell you which pin it is, but encode tone is available on one
of the connectors on the tone panel/controller board in the top of the
repeater (the board were the tone EEPROM is located). You should be able
to find it with the manual and either interrupt it, or pull it to ground
when no tone is desired. Then just bring the control line for that out a
spare pin on the molex on the back where everything else plugs in. There
is one or two that can be used.

-- 
Jim Barbour
WD8CHL

Rgr.  I opened it up yesterday evening and found the enable on the module
responsible for encoding.  And that signal originates in the tone panel as
you mention.  I'm going to test that theory first.  Also, I want to see how
disabling the PL will effect the squelch heard on a user's radio.  I still
may elect to use an external encoder if my experiement is not so succssful.

Thanks.
WD7F
John in Tucson








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Re: [Repeater-Builder] Kenwood KPT-20 ROM Unit

2006-11-15 Thread WD7F - John in Tucson
Thanks.  That's quite a bit of info...I'll study it over a beer maybe.
John

- Original Message - 
From: DCFluX 
To: Repeater-Builder@yahoogroups.com 
Sent: Wednesday, November 15, 2006 11:15 AM
Subject: Re: [Repeater-Builder] Kenwood KPT-20 ROM Unit


See attached .DOC,  This is a rough cut, it has some typographical errors.


On 11/15/06, WD7F - John in Tucson [EMAIL PROTECTED]  wrote:
  Does anyone here have a good understanding of this unit and possibly help 
step me through a signal change on the 9346 EPROM?

  I'd be happy to phone or e-mail direct.

  de WD7F
  John in Tucson


 





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Re: [Repeater-Builder] Re: Kenwood KPT-20 ROM Unit

2006-11-16 Thread WD7F - John in Tucson
I have the manual...it says KPT-2R Instruction Manual...not easy to
understand.

- Original Message - 
From: kb8sxk [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, November 16, 2006 8:38 AM
Subject: [Repeater-Builder] Re: Kenwood KPT-20 ROM Unit


I have the manual for KPT-20 Programmer on cd if interested.  Let me
know

Jeff
KB8SXK








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[Repeater-Builder] TKR-720/820

2006-11-26 Thread WD7F - John in Tucson
Can anyone tell me a source for parts for the TKR-720/820 repeater.  Is
Kenwood the only source?  I have a Signaling Unit that crapped out.
Somebody on the board is dragging down the 5V regulated and it's not easy
for this old guy to see that tiny stuff, let alone solder it.

de WD7F
John in Tucson





 
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Re: [Repeater-Builder] TKR-720/820

2006-11-26 Thread WD7F - John in Tucson
I suffer with the inability to walk away from an electronics
malfunction...can't sleep, can't think of anything else.  Turns out that the
22 uFD electrolytic where the 12.8 V comes into the signaling unit had
failed.  I took it out and the thing worked for a few seconds.  I measured
the resistance of the in-series 10 ohm surface mount resistor preceeding the
cap and it was reading 750 ohms.  I jumped it with a 10 ohm resistor and
everything started working.

I suppose the heat from the soldering iron may have screwed up that
resistor, but it seems unlikely.  Danged if I know! Ain't electronics fun?

Anyway, I STILL wonder if it's possible to find circuit boards for the
TKR720/820.

de WD7F
John in Tucson

- Original Message - 
From: WD7F - John in Tucson [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, November 26, 2006 12:46 PM
Subject: [Repeater-Builder] TKR-720/820


Can anyone tell me a source for parts for the TKR-720/820 repeater.  Is
Kenwood the only source?  I have a Signaling Unit that crapped out.
Somebody on the board is dragging down the 5V regulated and it's not easy
for this old guy to see that tiny stuff, let alone solder it.

de WD7F
John in Tucson






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Re: [Repeater-Builder] TKR-720/820

2006-11-26 Thread WD7F - John in Tucson
Thank you..$178.14 or $188.27 for the signaling unit.  Better than
buying another repeater.  I have the URLs bookmarked.

de WD7F
John in Tucson

- Original Message - 
From: Jeff Hunt / ICS Radio [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, November 26, 2006 4:18 PM
Subject: RE: [Repeater-Builder] TKR-720/820


www.kenwoodparts.com
www.partstore.com

Jeff

-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Maire-Radios
Sent: Sunday, November 26, 2006 2:10 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] TKR-720/820

Kenwood has a parts depot in both the west cost and east cost.  I am not
sure if they sell to non dealers.

John


- Original Message -
From: WD7F - John in Tucson [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, November 26, 2006 2:46 PM
Subject: [Repeater-Builder] TKR-720/820


 Can anyone tell me a source for parts for the TKR-720/820 repeater.  Is
 Kenwood the only source?  I have a Signaling Unit that crapped out.
 Somebody on the board is dragging down the 5V regulated and it's not easy
 for this old guy to see that tiny stuff, let alone solder it.

 de WD7F
 John in Tucson






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Re: [Repeater-Builder] RE: Bomar Crystals Ordered, all the RX not working for GE EXEC II mobiles

2007-01-01 Thread WD7F - John in Tucson
Curious as to what is different in the crystal when it is cut for low side
vs high side.

de WD7F
John in Tucson

- Original Message - 
From: Eric Lemmon [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Cc: [EMAIL PROTECTED]
Sent: Monday, January 01, 2007 10:55 AM
Subject: [Repeater-Builder] RE: Bomar Crystals Ordered, all the RX not
working for GE EXEC II mobiles


Yes, it is a sensitive adjustment.  How can an LO crystal not be either high
or low side injection?  When you order a receive crystal for a Mastr II or
Exec II radio, you must state whether it will be used for high or low side
injection.

73, Eric Lemmon WB6FLY


-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Mathew Quaife
Sent: Monday, January 01, 2007 9:31 AM
To: Repeater-Builder@yahoogroups.com
Subject: RE: [Repeater-Builder] Bomar Crystals Ordered, all the RX not
working for GE EXEC II mobiles

I ordered just the xtals from them.  One the UHF version, the crystals that
I had tuned  them up are at 434.850, was neither high or low side injection.
The xtal that I put in this radio is at 434.875 MHz with a high side
injection.  Could it be that far off.

Mathew


Eric Lemmon [EMAIL PROTECTED] wrote:

Mathew,

Did you order just bare crystals to put in some existing channel
elements,
or did you send the elements to Bomar and have them compensated with
the new
crystals? That may be part of the problem, but usually the lack of
compensation doesn't prevent the crystal from operating- it just
might allow
them to drift more than the specified tolerance.

Since the Exec II radio has tuning adjustments in both the
oscillator-multiplier and the RF assembly, the non-operation may be
nothing
more than a lack of tuning. If the previous frequencies are far
removed
from the new frequencies, the tuning may be so far off that the
oscillator
is not even working. What channel frequencies were used previously?

It may be that some components may need to be changed to optimize
the radios
for out-of-band operation.

73, Eric Lemmon WB6FLY

-Original Message-
From: Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com
[mailto:Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of Mathew Quaife
Sent: Monday, January 01, 2007 9:09 AM
To: Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com
Subject: Re: [Repeater-Builder] Bowmar Crystals Ordered, all the RX
not
working for GE EXEC II mobiles

Thanks Chuck, found them in the list that was referenced. So these
are
correct, why do they not work? Anyone with any good ideas?

Mathew

Chuck Kelsey [EMAIL PROTECTED] mailto:kelsey%40madbbs.com 
wrote:

For high side, high band -- F+11.2/9

For high side, UHF -- F+11.2/27

Chuck
WB2EDV




- Original Message - 
From: Mathew Quaife mailto:[EMAIL PROTECTED] mailto:n9lv%40yahoo.com

To: Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com
mailto:Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com 
Sent: Monday, January 01, 2007 11:44 AM
Subject: Re: [Repeater-Builder] Bowmar Crystals Ordered, all
the RX not working for GE EXEC II mobiles

Thanks Chuck, that is what they sent me, so your math is
just fine. Then there must be something I am missing. I can take one
of
the old xtals and they work out just fine, so I know the receivers
are
working. Might I ask what the formula you used was? It's been a long
time
since I have calculated a crystal freq. so just need the formula
configuration.

Mathew

Chuck Kelsey [EMAIL PROTECTED] mailto:kelsey%40madbbs.com 
wrote:

If my hasty math is correct:

144.81 low side = 14.84
144.81 high side = 17.33

434.875 low side = 16.39537
434.875 high side = 16.521296

Chuck
WB2EDV

- Original Message - 
From: n9lv [EMAIL PROTECTED] mailto:n9lv%40yahoo.com
mailto:n9lv%40yahoo.com 
To: Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com 
Sent: Monday, January 01, 2007 10:40 AM
Subject: [Repeater-Builder] Bowmar Crystals Ordered,
all the RX not working
for GE EXEC II mobiles

 Hope someone can help shed some light here. I
ordered xtals from
 Bomar (3 week wait) for the GE EXEC II mobile
radios, 6 for RX for
 144.810 and one RX of 434.875, all high side
injection. None of them
 are working at all. At the same time I ordered tx
xtals for the same
 radio, they all work just fine. What might I be
missing here, or did
 they just cut them all wrong.

 Mathew




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Re: [Repeater-Builder] RE: Bomar Crystals Ordered, all the RX not working for GE EXEC II mobiles

2007-01-01 Thread WD7F - John in Tucson
I misunderstood.  If I order a crystal at a particular frequency for low
side, it's obvious that it would be different for a high side receiver.  I
thought you were implying that there was some nuance between using one for
upper vs lower and as an Inquiring Mind I wanted to know.

de WD7F
John in Tucson


- Original Message - 
From: Chuck Kelsey [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, January 01, 2007 11:24 AM
Subject: Re: [Repeater-Builder] RE: Bomar Crystals Ordered, all the RX not
working for GE EXEC II mobiles


It is simply cut to a different frequency.

Chuck
WB2EDV



- Original Message - 
From: WD7F - John in Tucson [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, January 01, 2007 1:12 PM
Subject: Re: [Repeater-Builder] RE: Bomar Crystals Ordered, all the RX not
working for GE EXEC II mobiles


 Curious as to what is different in the crystal when it is cut for low side
 vs high side.

 de WD7F
 John in Tucson

 - Original Message - 
 From: Eric Lemmon [EMAIL PROTECTED]
 To: Repeater-Builder@yahoogroups.com
 Cc: [EMAIL PROTECTED]
 Sent: Monday, January 01, 2007 10:55 AM
 Subject: [Repeater-Builder] RE: Bomar Crystals Ordered, all the RX not
 working for GE EXEC II mobiles


 Yes, it is a sensitive adjustment.  How can an LO crystal not be either
 high
 or low side injection?  When you order a receive crystal for a Mastr II or
 Exec II radio, you must state whether it will be used for high or low side
 injection.

 73, Eric Lemmon WB6FLY


 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] On Behalf Of Mathew Quaife
 Sent: Monday, January 01, 2007 9:31 AM
 To: Repeater-Builder@yahoogroups.com
 Subject: RE: [Repeater-Builder] Bomar Crystals Ordered, all the RX not
 working for GE EXEC II mobiles

 I ordered just the xtals from them.  One the UHF version, the crystals
 that
 I had tuned  them up are at 434.850, was neither high or low side
 injection.
 The xtal that I put in this radio is at 434.875 MHz with a high side
 injection.  Could it be that far off.

 Mathew


 Eric Lemmon [EMAIL PROTECTED] wrote:

 Mathew,

 Did you order just bare crystals to put in some existing channel
 elements,
 or did you send the elements to Bomar and have them compensated with
 the new
 crystals? That may be part of the problem, but usually the lack of
 compensation doesn't prevent the crystal from operating- it just
 might allow
 them to drift more than the specified tolerance.

 Since the Exec II radio has tuning adjustments in both the
 oscillator-multiplier and the RF assembly, the non-operation may be
 nothing
 more than a lack of tuning. If the previous frequencies are far
 removed
 from the new frequencies, the tuning may be so far off that the
 oscillator
 is not even working. What channel frequencies were used previously?

 It may be that some components may need to be changed to optimize
 the radios
 for out-of-band operation.

 73, Eric Lemmon WB6FLY

 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 mailto:Repeater-Builder%40yahoogroups.com
 [mailto:Repeater-Builder@yahoogroups.com
 mailto:Repeater-Builder%40yahoogroups.com ] On Behalf Of Mathew Quaife
 Sent: Monday, January 01, 2007 9:09 AM
 To: Repeater-Builder@yahoogroups.com
 mailto:Repeater-Builder%40yahoogroups.com
 Subject: Re: [Repeater-Builder] Bowmar Crystals Ordered, all the RX
 not
 working for GE EXEC II mobiles

 Thanks Chuck, found them in the list that was referenced. So these
 are
 correct, why do they not work? Anyone with any good ideas?

 Mathew

 Chuck Kelsey [EMAIL PROTECTED] mailto:kelsey%40madbbs.com 
 wrote:

 For high side, high band -- F+11.2/9

 For high side, UHF -- F+11.2/27

 Chuck
 WB2EDV




 - Original Message - 
 From: Mathew Quaife mailto:[EMAIL PROTECTED] mailto:n9lv%40yahoo.com

 To: Repeater-Builder@yahoogroups.com
 mailto:Repeater-Builder%40yahoogroups.com
 mailto:Repeater-Builder@yahoogroups.com
 mailto:Repeater-Builder%40yahoogroups.com 
 Sent: Monday, January 01, 2007 11:44 AM
 Subject: Re: [Repeater-Builder] Bowmar Crystals Ordered, all
 the RX not working for GE EXEC II mobiles

 Thanks Chuck, that is what they sent me, so your math is
 just fine. Then there must be something I am missing. I can take one
 of
 the old xtals and they work out just fine, so I know the receivers
 are
 working. Might I ask what the formula you used was? It's been a long
 time
 since I have calculated a crystal freq. so just need the formula
 configuration.

 Mathew

 Chuck Kelsey [EMAIL PROTECTED] mailto:kelsey%40madbbs.com 
 wrote:

 If my hasty math is correct:

 144.81 low side = 14.84
 144.81 high side = 17.33

 434.875 low side = 16.39537
 434.875 high side = 16.521296

 Chuck
 WB2EDV

 - Original Message - 
 From: n9lv [EMAIL PROTECTED] mailto:n9lv%40yahoo.com
 mailto:n9lv%40yahoo.com 
 To: Repeater-Builder@yahoogroups.com
 mailto:Repeater-Builder%40yahoogroups.com

Re: [Repeater-Builder] Re: Mini Audio Amplifier time... circuit revisions.

2007-01-03 Thread WD7F - John in Tucson
I used one of those one time to get enought audio drive to modulate an old
Molorola repeater via the line transformer.  I used it for a while on IRLP,
had some hum but it wasn't too bad.  I've heard worse. :-)

de WD7F
John in Tucson

- Original Message - 
From: DCFluX [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, January 03, 2007 1:15 PM
Subject: Re: [Repeater-Builder] Re: Mini Audio Amplifier time... circuit
revisions.


Point of order:

Depending on the make and design of your amplifier, Make sure the
input to the LM-386 is not left 'floating'. Other wise the amp makes
one of the nicest broad-band AM recievers you can get.

A 10K pull low resistor is all it takes. Also a 470pF capacitor to
ground will help in high RF enviroments.

On 1/3/07, skipp025 [EMAIL PROTECTED] wrote:
 I'm real glad to see a number of you already know about the Mini
 Amplifier.

 Just for the sake of trivia..

 There are at least three versions of the Mini Amplifier all being
 the same basic animal.  One of the first versions used the lm-386
 with a transistor stage in front.  The diagram for the circuit was
 on a paper label inside the case (very nice) and it was slightly
 larger than the current Mini Amplifier.  Working from memory I
 believe it doesn't need a blocking capacitor in that model.

 The current Shack version is part number 277-1008 although I also
 have a version with the 1008c suffix.

  Adam T. Cately [EMAIL PROTECTED] wrote:
  I wish I could mount mine into my line test meter...

 Also know that Turkey Shaft (aka Radio Shack) sells or sold
 what you would call the same type amplifier pc board in kit
 form (some years back).  I haven't looked to see if they still
 sell the kit but you can find mini audio amplifier kits using
 the LM-386 and a number of other devices.  Check with Marlin P
 Jones, Jameco and KitsRus for those type of items.  It wouldn't
 be much to mount a mini amplifier into a lot of small places.

  [paste]
  Sits on the lab bench ready to amplify as long as the 9 VDC
  battery is good. Well worth every penny!
  Ralph W4XE

 Can't seem to find my Battery Club Card anymore...  Now I've
 got to remember to shut the power off or else.

 s.






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Re: [Repeater-Builder] Re: COS output for Kenwood

2007-01-20 Thread WD7F - John in Tucson
Hook that signal to the base of the transistor through a 10K or so resistor.
That should provide enough isolation to prevent loading of the signal.  I
hope it's going positive when the squelch is open so your COS will be low
when active.

de WD7F
John in Tucson

- Original Message - 
From: jkstrsn [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, January 20, 2007 7:40 AM
Subject: [Repeater-Builder] Re: COS output for Kenwood


 Jim,  thanks for the suggestion.  Unfortunately it doesn't have a
 receive LED, only a bar-graph which is also used for transmitting.

 The optoisolator idea has merit though.  I have located a point in the
 radio which changes voltage, but only by about 1/2 V and it is very
 sensitive to loading.  So far I've tried one transistor but it loads it
 too much I guess.

 I'm going to try again later this morning, I either need to find a
 point that switches more voltage or maybe try a fet or something so as
 not to load the other one?

 Again,  thanks,  any other ideas are welcome.

 Jeff






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Re: [Repeater-Builder] PL BOARD

2007-01-22 Thread WD7F - John in Tucson
Don,

I have pdfs I made from the very small schematic of  the 13-509 and one of
the Comspec ME-3 encoder/decoder that shows where to connect audio
in/out/etc. if you're interested.  Reply direct.

de WD7F
John in Tucson

- Original Message - 
From: Don [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, January 22, 2007 8:01 PM
Subject: [Repeater-Builder] PL BOARD


 I am trying to Donate to a New Blind Ham, a old Cobra 200 Which is the
 same as the Midland 13-509 220 Mobile, The problem is I don't have the
 Schematic and I would like to put a Communications Specialist TS-32 Pl
 Board so he can get into My 220 repeater, I know it is a old radio but
 I am sure someone might have the info I need to install it. Please
 tell Me in Layman terms.

 Thanks Don KA9QJG







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Re: [Repeater-Builder] FCC Test/Tower fall

2007-02-01 Thread WD7F - John in Tucson
Where?  The link in the first message of the thread takes you to an FTP player 
site.  Is there a link on that page that I don't see?
de WD7F
John in Tucson

  - Original Message - 
  From: Mike Perryman 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, February 01, 2007 3:01 PM
  Subject: RE: [Repeater-Builder] FCC Test/Tower fall


  I found it...  the guy was on the top-plate of a roughly 500 foot 
self-supporter...  he tried to rip the lightning rod off and lost his 
footing...   serves him right.  No sleep lost here...
   73 
  Mike Perryman 
  www.k5jmp.us 

-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of 
Chuck Kelsey
Sent: Thursday, February 01, 2007 4:53 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] FCC Test/Tower fall


What site are you talking about?

Chuck
WB2EDV


  - Original Message - 
  From: [EMAIL PROTECTED] 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, February 01, 2007 3:27 PM
  Subject: Re: [Repeater-Builder] FCC Test/Tower fall


  Take a look at same site for non-entertainment video clip of the guy 
falling off the top of a huge tower to his death. That should be a refresher 
for some people to be extra careful when climbing towers. 
  Gary  K2UQ

   


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9:31 AM


Re: [Repeater-Builder] FCC Test/Tower fall

2007-02-01 Thread WD7F - John in Tucson
Thanks.
de WD7F

  - Original Message - 
  From: Christopher Zeman 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, February 01, 2007 3:18 PM
  Subject: Re: [Repeater-Builder] FCC Test/Tower fall


  http://www.youtube.com/watch?v=QSseoyHouOM

  I think he WAS going to climb back down, but ended up going down the fast way.


  DCFluX wrote: 
Link?



On 2/1/07, Mike Perryman [EMAIL PROTECTED] wrote: 
  I found it...  the guy was on the top-plate of a roughly 500 foot 
self-supporter...  he tried to rip the lightning rod off and lost his 
footing...   serves him right.  No sleep lost here...
   73 
  Mike Perryman 
  www.k5jmp.us 

-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf 
Of Chuck Kelsey
Sent: Thursday, February 01, 2007 4:53 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] FCC Test/Tower fall


What site are you talking about?

Chuck
WB2EDV


  - Original Message - 
  From: [EMAIL PROTECTED] 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, February 01, 2007 3:27 PM
  Subject: Re: [Repeater-Builder] FCC Test/Tower fall


  Take a look at same site for non-entertainment video clip of the guy 
falling off the top of a huge tower to his death. That should be a refresher 
for some people to be extra careful when climbing towers. 
  Gary  K2UQ




   


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9:31 AM


Re: [Repeater-Builder] FCC Test/Tower fall

2007-02-01 Thread WD7F - John in Tucson

  - Original Message - 
  From: Mike Perryman K5JMP 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, February 01, 2007 4:31 PM
  Subject: RE: [Repeater-Builder] FCC Test/Tower fall


  Sorry, was headed out the office door...  just arrived home and see the link 
has already been posted...

  73
  Mike
  K5JMP
  www.k5jmp.us

-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of 
DCFluX
Sent: Thursday, February 01, 2007 5:12 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] FCC Test/Tower fall


Link?


On 2/1/07, Mike Perryman [EMAIL PROTECTED] wrote: 
  I found it...  the guy was on the top-plate of a roughly 500 foot 
self-supporter...  he tried to rip the lightning rod off and lost his 
footing...   serves him right.  No sleep lost here...
   73 
  Mike Perryman 
  www.k5jmp.us 

-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf 
Of Chuck Kelsey
Sent: Thursday, February 01, 2007 4:53 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] FCC Test/Tower fall


What site are you talking about?

Chuck
WB2EDV


  - Original Message - 
  From: [EMAIL PROTECTED] 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, February 01, 2007 3:27 PM
  Subject: Re: [Repeater-Builder] FCC Test/Tower fall


  Take a look at same site for non-entertainment video clip of the guy 
falling off the top of a huge tower to his death. That should be a refresher 
for some people to be extra careful when climbing towers. 
  Gary  K2UQ



   


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9:31 AM


Re: [Repeater-Builder] FCC Test/Tower fall

2007-02-01 Thread WD7F - John in Tucson
DuhI'll never know why I hit the send button after I read this 
messagesorry.
de WD7F

  - Original Message - 
  From: Mike Perryman K5JMP 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, February 01, 2007 4:31 PM
  Subject: RE: [Repeater-Builder] FCC Test/Tower fall


  Sorry, was headed out the office door...  just arrived home and see the link 
has already been posted...

  73
  Mike
  K5JMP
  www.k5jmp.us

-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf Of 
DCFluX
Sent: Thursday, February 01, 2007 5:12 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] FCC Test/Tower fall


Link?


On 2/1/07, Mike Perryman [EMAIL PROTECTED] wrote: 
  I found it...  the guy was on the top-plate of a roughly 500 foot 
self-supporter...  he tried to rip the lightning rod off and lost his 
footing...   serves him right.  No sleep lost here...
   73 
  Mike Perryman 
  www.k5jmp.us 

-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] Behalf 
Of Chuck Kelsey
Sent: Thursday, February 01, 2007 4:53 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] FCC Test/Tower fall


What site are you talking about?

Chuck
WB2EDV


  - Original Message - 
  From: [EMAIL PROTECTED] 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Thursday, February 01, 2007 3:27 PM
  Subject: Re: [Repeater-Builder] FCC Test/Tower fall


  Take a look at same site for non-entertainment video clip of the guy 
falling off the top of a huge tower to his death. That should be a refresher 
for some people to be extra careful when climbing towers. 
  Gary  K2UQ



   


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9:31 AM


[Repeater-Builder] Another TKR-820 Question

2007-03-06 Thread WD7F - John in Tucson
The line-out de-emphasized audio on pin 10 of the accessory jack of the
TKR-820 is switched by COR.  Discriminator audio is continuous.  Does any
Kenwood guru know what signal is responsible for switching off the audio
when COR is not active?

It appears that the microprocessor on the Display Panel could via Q6 and
R45, but it doesn't appear to be the case in real life.

Anybody know.  I'd be happy to take it off line or call you on the phone (my
nickel).

de WD7F
John in Tucson




Re: [Repeater-Builder] Another TKR-820 Question

2007-03-08 Thread WD7F - John in Tucson
Well, I figured it out.  I guess there's at least one guru ;-) who knows how
the line-out works. Me.  Man, I hate surface mount technology, especially
when your only copy of the service manual is a fuzzy pdf from a scan !
Thanks to Dave's (K7IOU) younger eyes.

FYI-IYGAS:I'ts good sounding audio, much better than discriminator audio
which has been de-emphasized with a capacitor in the feedback of an audio
amp in the controller.  Kenwood says it's  600 ohms, -10dBm, -6dB/octave,
300 - 3000, however it appeared very sharp and still required a 0.0047 uf in
the audio feedback.  Since it used switched line-out, it caused a nice
little chirp when the repeater input squelched.  Discovering how to
eliminate the CO switching was the secret.  Plus, DTMF detection works great
with this audio so it will remain in the configuration.  If it's good to go
by the critics, we'll put it on the mountain soon.

de WD7F
John in Tucson


- Original Message - 
From: WD7F - John in Tucson [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, March 06, 2007 6:04 PM
Subject: [Repeater-Builder] Another TKR-820 Question


The line-out de-emphasized audio on pin 10 of the accessory jack of the
TKR-820 is switched by COR.  Discriminator audio is continuous.  Does any
Kenwood guru know what signal is responsible for switching off the audio
when COR is not active?

It appears that the microprocessor on the Display Panel could via Q6 and
R45, but it doesn't appear to be the case in real life.

Anybody know.  I'd be happy to take it off line or call you on the phone (my
nickel).

de WD7F
John in Tucson





Re: [Repeater-Builder] Another TKR-820 Question

2007-03-08 Thread WD7F - John in Tucson
;-)

- Original Message - 
From: N9WYS [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, March 08, 2007 2:48 PM
Subject: RE: [Repeater-Builder] Another TKR-820 Question


To paraphrase a hymn; Go put it on the mountain!  Maybe you have the
ultimate critic's approval!

Sorry - I just couldn't resist.  sheepish grin

Mark - N9WYS

-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of WD7F - John in Tucson

 snip 
If it's good to go by the critics, we'll put it on the mountain soon.

de WD7F
John in Tucson








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10:58 AM




Re: [Repeater-Builder] ICM Crystals Off Frequency?

2007-03-15 Thread WD7F - John in Tucson
Doesn't the MSR-2000 use the crystal element that has an internal range
adjustment?  Seems to me that when we converted one about four years ago, it
wouldn't warp high (maybe it was low) enough.  We opened the thing up and
found a trimmer in there, moved it slightly and put it back together.  We
were then able to get it on frequency with the external adjustment.  I might
have been a tuning slug...I've slept too many times since then so I don't
remember.  However, I do remember opening the element and tweaking it.
de WD7F
John in Tucson


- Original Message - 
From: Robin Midgett [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, March 14, 2007 10:02 PM
Subject: [Repeater-Builder] ICM Crystals Off Frequency?


Either I'm missing something or ICM sent me defective crystals.
I ordered two pairs of crystals to put a MSR-2000 repeater on 147.105
Tx / 147.705 Rx. I've tried both Tx crystals in the KXN1095A channel
element only to find the frequency to end up ~36kHz. high. The
crystal itself is putting out energy at 12.26180 MHz.; it should be
12.25875 MHz. The bag label indicates them to be cut for 12.25875,
but they don't oscillate at (barely even near) that frequency.
Should I have to pad the new crystals with a cap to net them on
frequency? If so, what value?

Thanks,
Robin Midgett K4IDC
VHF+ Glutton EM66se






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Re: [Repeater-Builder] Amateur-Grade Radios (Was: Fixed Audio)

2007-03-15 Thread WD7F - John in Tucson
You're right, at least right about one we converted to 220 a year or so ago
http://home.comcast.net/~micorrepeater/ .  I don't know the model number,
but it's a hi-band VHF 100W continuous machine in the tall cabinet.  How do
you handle the IDC adjustment?  We ended up having to adjust IDC for 800 -
1K PL deviation and left it there, setting the maximum deviation via the
controller.  I considered figuring a way to modify the PL card or the
exciter so that the level could be adjusted independently of IDC.  That
puppy was a real learning experience for us novices.
de WD7F
John in Tucson

- Original Message - 
From: Chuck Kelsey [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, March 15, 2007 3:44 AM
Subject: Re: [Repeater-Builder] Amateur-Grade Radios (Was: Fixed Audio)


Commercial radios also used fixed values. The Micor is one example of fixed
values for tone deviation.

Chuck
WB2EDV

- Original Message - 
From: Mike Morris WA6ILQ [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, March 14, 2007 11:37 PM
Subject: Re: [Repeater-Builder] Amateur-Grade Radios (Was: Fixed Audio)


 At 07:23 PM 03/14/07, Eric Lemmon WB6FLY wrote:
Nate,

Several years ago, I chastised ARRL Labs for failing to report the basic
2-way radio performance parameters of 12dB SINAD sensitivity, voice
deviation limit, CTCSS deviation limit, and center frequency accuracy.  I
did not get a satisfactory answer, but I suspect that there is a
reluctance
to disparage the performance of name-brand Ham radios.

 QST survives on the ads.  The league doesn't want to risk the revenue.
 As the wise man said, he who has the gold makes the rules.

Nearly every Amateur 2m radio I have tested has CTCSS deviation far in
excess of the EIA/TIA recommended level of 750 Hz, and that level is not
adjustable in most radios.

 Pots cost more than fixed resistors and that would reduce the profits.








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4:51 PM




Re: [Repeater-Builder] ICM Crystals Off Frequency?

2007-03-15 Thread WD7F - John in Tucson
Why yes, John, I believe there is.


- Original Message - 
From: WD7F - John in Tucson [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, March 15, 2007 7:08 AM
Subject: Re: [Repeater-Builder] ICM Crystals Off Frequency?


Doesn't the MSR-2000 use the crystal element that has an internal range
adjustment?  Seems to me that when we converted one about four years ago, it
wouldn't warp high (maybe it was low) enough.  We opened the thing up and
found a trimmer in there, moved it slightly and put it back together.  We
were then able to get it on frequency with the external adjustment.  I might
have been a tuning slug...I've slept too many times since then so I don't
remember.  However, I do remember opening the element and tweaking it.
de WD7F
John in Tucson


- Original Message - 
From: Robin Midgett [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, March 14, 2007 10:02 PM
Subject: [Repeater-Builder] ICM Crystals Off Frequency?


Either I'm missing something or ICM sent me defective crystals.
I ordered two pairs of crystals to put a MSR-2000 repeater on 147.105
Tx / 147.705 Rx. I've tried both Tx crystals in the KXN1095A channel
element only to find the frequency to end up ~36kHz. high. The
crystal itself is putting out energy at 12.26180 MHz.; it should be
12.25875 MHz. The bag label indicates them to be cut for 12.25875,
but they don't oscillate at (barely even near) that frequency.
Should I have to pad the new crystals with a cap to net them on
frequency? If so, what value?

Thanks,
Robin Midgett K4IDC
VHF+ Glutton EM66se






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4:51 PM







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Re: [Repeater-Builder] Multiple Emails

2007-03-28 Thread WD7F - John in Tucson
Yes...

- Original Message - 
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, March 28, 2007 8:37 PM
Subject: [Repeater-Builder] Multiple Emails


Anyone else getting multiple copies of the same email on any or all of
their subscribed Yahoo Groups?

I'm seeing as many as 10-12 exact duplicates showing one time stamp then
the same exact email 6-8 times at a different time stamp.

Randy







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Re: [Repeater-Builder] Re: Need VHF MSR2000 Repeater help

2007-04-22 Thread WD7F - John in Tucson

- Original Message - 
From: kk2ed [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, April 22, 2007 8:53 PM
Subject: [Repeater-Builder] Re: Need VHF MSR2000 Repeater help



I have a bunch of MSR2000s here. I know the Canadian version was
offered as a 132-150 version, but the USA versions I have here are
rated 146-174MHz. I know the Micors are band-split for VHF, but from
what I read in the MSR manuals, I think there is only one 146-174
slpit MSR, no?


I have a number of 146-174 MSRs that I brought down from 158-160
range down to 146.xxx for ham repeaters, and they all worked
flawlessly.  Both, original base units converted to repeaters, as
well as original repeaters. Even at high RF sites. I've never had an
issue with a base station (which lacks the additional i/o filter
daughtherboard present in the repeater versions).

Sounds like either a mistuned exciter which is generating a lot of
white noise close to the rx freq, or a mistuned oscillator/multiplier
in the receiver.  I've seen this happen on Mitreks before.

I'm guessing you removed the original audio and keying paths on the
Squelch Gate card before adding the NHRC controllers?

Eric
KE2D



--- In Repeater-Builder@yahoogroups.com, Eric Lemmon [EMAIL PROTECTED]
wrote:

 Tom,

 The VHF MSR2000 stations generally come in one of three splits:
132-150.8,
 150.8-162, and 162-174 MHz.  Some of the symptoms you describe
result from
 operating the exciter, harmonic filter, and PA outside of the band
they were
 made for.

 What modifications were done to move them from the commercial band
to 2m?
 What are the numbers stamped on the transmitter components?

 73, Eric Lemmon WB6FLY


 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] On Behalf Of tomnevue
 Sent: Sunday, April 22, 2007 3:25 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: [Repeater-Builder] Need VHF MSR2000 Repeater help

 I have 2 VHF MSR2000 Repeaters that I'm building up at the same
 time. Both units have the same problem and I'm hoping someone with
 MSR2000 experience can give me a suggestion on where to look next.

 I'm having a terrible time with receiver desensing, transmitter
 hanging on and audio oscillations (intermittent/random growling).
 I've been thru separate antennas, duplexer with better than 90dB
 notch, separate antenna with duplexer + extra cavity. If I run the
 duplexer antenna port into a dummy load, the problem is less but
 still there. If I run the transmitter port directly into a dummy
load
 or if I turn the PA power down to about 4 watts (with
 duplexer/antenna connected)the problem is gone. I've replaced the
 repeater/duplexer jumpers with good double shielded coax and ground
 strapped the repeater/duplexer cabinet together. I've made sure all
 of the original repeater panels are in place. The problems exist
with
 the controller in place and also with a test connector replacing it.


 One of these was a full working repeater in public service use and
 the other was a convertable base station. Both have the 110watt PA
 that I am running at 50 watts. The controllers are NHRC-2 connected
 to the Squelch Gate card using the procedure described by Skipp
May.
 The 12 inch interconnecting cables use shielded audio in/out cables
 and COS/PTT wires are not shielded. The controllers are enclosed in
 aluminum boxes.

 HELP !!!

 Tom W2MN








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Re: [Repeater-Builder] ctcss and dcs at same time?

2007-07-02 Thread WD7F - John in Tucson
Tell us how, please.  I ended up using PL and DPL but not at the same time.
The Kenwood's community panel allows multiple PLs and crossover as required
but only one can be used at a time.  Another quirk is that the repeater must
drop before it will respond to a different PL or DPL input.

So, how did you go about simultaneous  PL/DPL?

de WD7F
John in Tucson




- Original Message - 
From: mch [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, July 02, 2007 9:17 AM
Subject: Re: [Repeater-Builder] ctcss and dcs at same time?


I've done it successfully.

Joe M.

DaveH wrote:

 chances are one will interfere with the other.  They would but be present
 and active at the same time. I have never seen it done successfully.
 David R. Henry LME
 Licensed Master Electrician
 Amateur Radio  W2DRH
 Member ARRL
 Accredited Instructor

 - Original Message -
 From: Jim [EMAIL PROTECTED]
 To: Repeater-Builder@yahoogroups.com
 Sent: Monday, July 02, 2007 11:08 AM
 Subject: Re: [Repeater-Builder] ctcss and dcs at same time?

  ku4zs1 wrote:
  Is it possible to run CTCSS and DCS at the same time on a
  transmitter?  Aside from the fact that most radios will not allow you
  to select both at the same time (I will be using an outboard DCS
  encoder and the built in CTCSS encoder).  I am not sure if they are
  capable of both running at the same time.  Thanks.
 
  Chances are-the transmitter will be perfectly happy. The decoder on the
  other end most likely will not.
 
  I have never been successful at it, even using a good service monitor
  with an outboard DCS encoder (test instrument grade, I think it was a
  Motorola box) as the 'trasnmitter'. Several different radios, none would
  decode both.
  --
  Jim Barbour
  WD8CHL
 
 
 
 
 
 
  Yahoo! Groups Links
 
 
 
 


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Re: [Repeater-Builder] Re: Acronyms-a little OT

2007-07-08 Thread WD7F - John in Tucson
It's a pilot's term, I think.  Missed the target, no target found, missed the 
interception point, etc.
de WD7F
John in Tucson

- Original Message - 
From: George Henry 
To: Repeater-Builder@yahoogroups.com 
Sent: Sunday, July 08, 2007 8:10 PM
Subject: Re: [Repeater-Builder] Re: Acronyms-a little OT


I always figured it was coined by guys who struck out on liberty (shore 
leave).  ;-)


  - Original Message - 
  From: Richard 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Sunday, July 08, 2007 2:23 PM
  Subject: RE: [Repeater-Builder] Re: Acronyms-a little OT


  I'm probably wrong, but I've always thought it is an Australian term that has 
been adopted in this country.

  Richard
  www.n7tgb.net




--
  From: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of 
[EMAIL PROTECTED]
  Sent: Sunday, July 08, 2007 12:05 PM
  To: Repeater-Builder@yahoogroups.com
  Subject: Re: [Repeater-Builder] Re: Acronyms-a little OT



  Where did the expression No Joy originate to indicate an unsuccessful 
repair effort? 



 





Re: [Repeater-Builder] Re: 224 MHz PA fun and war stories

2007-07-14 Thread WD7F - John in Tucson
We built a PA for the high band VHF Micor using two Mitsubishi modules.  We
had some problems getting sufficient drive out of our exciter conversion and
we wanted higher power, so we used two modules requiring 50 mW input for 35W
out.

Turned into a real challenge.  Using an RF splitter to divide the input and
a phased power combiner/bridge to sum the outputs, we manged to get a very
stable and bullet proof PA that once transmitted all night due to a
controller malfunction.   The heavy duty heat sink and a fan allowed the
brick on the key operation with no problems.

You can find it on K7IOU's micor conversion page at
http://home.comcast.net/~micorrepeater/220mhzpa.htm

de WD7F
John in Tucson





 
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Re: [Repeater-Builder] Re: 224 MHz PA fun and war stories

2007-07-15 Thread WD7F - John in Tucson
Haven't tried it without a fan.  I would guess that the giant heat sink on
the original PA would probably handle the heat easily.  My only concern
would be the small contact area from each module; Would the heat dissipate
properly?  I have a PhD physicist business partner who could figure it out,
but it's about as easy to add the fan.

As K7IOU pointed out in the PA site, the fine print on that particular RF
module says that the unit was not appropriate for repeater use due to the
duty cycle.  Not sure why they came to that conclusion.  Of course, he read
that AFTER the modules had been purchased.  So, we went with them anyway.
Almost two years later... go figure.

de WD7F
John in Tucson

- Original Message - 
From: Nate Duehr [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, July 14, 2007 6:41 PM
Subject: Re: [Repeater-Builder] Re: 224 MHz PA fun and war stories

If a PA can't handle 48 hours of continuous key-down as-installed
(fans if one must, etc.), it shouldn't be used on a repeater.

 You can find it on K7IOU's micor conversion page at
 http://home.comcast.net/~micorrepeater/220mhzpa.htm

Thanks for sharing, John.  It's on the must read pile!  (GRIN)

--
Nate Duehr, WY0X
[EMAIL PROTECTED]







 
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Re: [Repeater-Builder] Coax length between added cavities

2007-07-27 Thread WD7F - John in Tucson
Repeating the experiment?  Hmmm.  We were re-cabling a set of Sinclair 
duplexers for a 2-meter machine and had access to a high quality vector 
voltmeter.  It took three of us Keystone Cops over 3 hours to make a set of 
1/4, 1/2 and even a couple of 1 wavelength cables.  Later, we repeated the 
process for a 220 machine and even though we had experience, it took about the 
same amount of time.  My point?  It ain't easy !  We just weren't ready to use 
the time and materials to add an inch to a set of cables and then make another 
set of short ones.

In both cases, things worked out great.  Many hams who are delving in cavity 
alignment don't have a vector voltmeter, so we were in good shape.  Plus, you 
have a warm fuzzy comfort factor if you know your cables are the right length 
when you start the job.  If alignment ain't happening, you can say I know it 
ain't the cables!...right ! And I got some ocean front property here in 
western Arizona

de WD7F
John in Tucson




So my take is that there are critical cable lengths involved for adding a pure 
pass cavity to a BP BR duplexer, but I would be interested to hear from anyone 
aboard who has the necessary hardware kicking around to repeat that experiment 
and either replicate or refute the results I got. As I said, my sole cavity 
experience has been with Wacoms, but I find it difficult to believe that this 
parameter is OEM specific.

K7IJ 









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Re: [Repeater-Builder] Re: msr 2000 audio board needed

2007-10-03 Thread WD7F - John in Tucson
I had a hairline crack where the R1 card plugs into the motherboard that 
caused the exact problem with my MSR2000.  Get a magnifying glass and a good 
set of eyes and take a look around those pins on the backside of the MB.
de WD7F
John in Tucson

- Original Message - 
From: [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, October 03, 2007 8:24 AM
Subject: [Repeater-Builder] Re: msr 2000 audio board needed


Skipp-  audio level varies from none to ok., good for a few days., then no
audio agn.

Pots have been cleaned., rotated., pin contacts cleaned, still have the
problem.

Easier to replace the board then drag the repeater home for service.

Can you help?

Tnx

Jerry VE3 EXT





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Re: [Repeater-Builder] MSR2000 + Controller Mushy Audio

2007-10-28 Thread WD7F - John in Tucson
Mushy sounds like there's too much de-emphasis.  Make sure you don't have 
any de-emphasis going on in the controller, either at the RX audio amp or 
the TX amp.  I have a MSR2000 with a CAT controller and the interface via 
the squelch gate card and it sounds great.  Have you followed the alignment 
of the exciter/deviation as per the manual on the 2000 so that you have the 
proper compression of the audio and the deviation limited to ~5K, etc.?  If 
you don't have a manual that is a problem.
de WD7F
John in Tucson




- Original Message - 
From: atms169 [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sunday, October 28, 2007 7:23 PM
Subject: [Repeater-Builder] MSR2000 + Controller Mushy Audio


Hey guys, thanks for all the tips on the MSR2000 conversion.  I now
have a running MSR2000 and NHRC-5 controller.  I have one problem..
the audio sounds mushy, almost emphasized.

I tapped in to pin 17 from the Squelch Card but, I think I'm not
getting a clean signal.  Is there a better spot to tap in to?  I read
somewhere I might need to remove a resistor off the Squelch Card but,
I have no manuals for this.

Any help appreciated  thanks!








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Re: [Repeater-Builder] Doubling Power Output On UHF Repeater

2007-11-03 Thread WD7F - John in Tucson
One more commentlet's see if I can make it without getting egg on my 
face...

The older receivers such as my Collins 74A4 called for a 100uv (that's 
microvolts) input to get S9 and my Kenwood 820 said 50uv for the same...so 
that should give you an idea how important it is to give a 59 signal 
report...hi hi.  And then I have an ICOM with two different pre-amp levels 
in addition to none..so, I could give someone three S reports.

de WD7F
John

- Original Message - 
From: Ralph Mowery [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, November 03, 2007 7:40 AM
Subject: Re: [Repeater-Builder] Doubling Power Output On UHF Repeater






 
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Re: [Repeater-Builder] VSWR Chart for Bird

2007-11-05 Thread WD7F - John in Tucson
Hey, he said, while trying not to get any more egg on his face

I thought the formula was the quantity sqrt PF + sqrt PR divided by the 
quantity sqrt PF - sqrt PR .

Suppose you had 100 watts of forward and 4 watts of reflected.

Therefore 10 + 2 divided by 10 - 2 = 1.5

Your formula says  1.2 divided by 0.8 = 1.5

Well, I'll be darned !!!

de WD7F
John in Tucson



- Original Message - 
From: Gary Schafer 
To: Repeater-Builder@yahoogroups.com ; [EMAIL PROTECTED] 
Sent: Sunday, November 04, 2007 8:52 PM
Subject: RE: [Repeater-Builder] VSWR Chart for Bird


1 + square root (r/f)

SWR= _

 1 - square root (r/f)

 

where r = reflected power

 f = forward power

 

 

73

Gary  K4FMX

 

from: Repeater-Builder@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of 
n9wys
Sent: Wednesday, October 31, 2007 6:07 PM
To: Repeater-Builder@yahoogroups.com; [EMAIL PROTECTED]
Subject: [Repeater-Builder] VSWR Chart for Bird

 

Does anyone have a VSWR chart for the Bird wattmeter (preferably the 4410, 
since that’s what I have – but I’m not sure there would be any difference) that 
they would be willing to share with me?  I bought my meter used and it came 
with neither manual nor chart.

 

Thanks,
Mark – N9WYS


 





 


Re: [Repeater-Builder] Scotchkoat

2008-01-08 Thread WD7F - John in Tucson
I buy MEK at Ace is the Place Hardware here in Tucson.  I used it a couple 
weeks ago to clean aluminum facia before painting.  Someone mentioned that 
it evaporates too quickly, however, it as opposed to TCE (which we used very 
lavishly in the radar shop in the USAF back in the 60s.  It's a wonder I 
ain't dead from that.), evaporates much more slowly.  Just wear some 
painters gloves when you use it.

One a side note, Oops is a pretty good product for removing stains.  Have 
you tried that?
de WD7F
John in Tucson

- Original Message - 
From: Bob M. [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, January 08, 2008 7:58 AM
Subject: RE: [Repeater-Builder] Scotchkoat


It's probably a lot harder to get M-E-K now than it
was when we all grew up. Also, in that era before
everything was found to cause cancer only in
California, who cared about putting their hands in
stuff or letting freon escape into the atmosphere.

Acetone is probably weaker but easily available at
most home improvement stores. If that fails, some
40-grit sand paper will do it, or just wait a week
until the skin and goo falls off.

Bob M.
==
--- Paul Finch [EMAIL PROTECTED] wrote:

 That's why you DON'T get it on your skin any longer.
  Have to tell you
 though, when I was growing up I raced slot cars and
 we had some sticky stuff
 we put on the tires to make them hold better on the
 track.  The only thing
 we could find to clean the tires was MEK, I used to
 buy it by the gallon and
 I don’t have any problems, except the strange facial
 tic.
 ((GRIN) that means not really)

 Paul

 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] On Behalf
 Of Kris Kirby
 Sent: Tuesday, January 08, 2008 1:13 AM
 To: Repeater-Builder@yahoogroups.com
 Subject: RE: [Repeater-Builder] Scotchkoat

 On Mon, 7 Jan 2008, Paul Finch wrote:
  Unless it has something like lacquer thinner in it
 there is not a
  chance of it working.  On upholstery I don’t know.
  It depends on what
  it is, if it’s plastic based I would be very
 careful.  If it’s a cloth
  material I would try the lacquer thinner then the
 MEK.  MEK also dries
  very fast.  Needless to say, try it on a hidden
 piece if upholstery
  first.

 Isn't MEK carcinogenic in 52 states and France?


  

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know-it-all with Yahoo! Mobile.  Try it now. 
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Re: [Repeater-Builder] RC110 Group

2008-01-25 Thread WD7F - John in Tucson
Yeah, I misread the post and my brain looked at 110 and recorded 210.  The 
110 is an old controller.  So, it was
Duh!, I'm an idiot!  It has something to do with being 67, I'm sure.
de WD7F
John in Tucson

- Original Message - 
From: MCH [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, January 25, 2008 3:48 PM
Subject: Re: [Repeater-Builder] RC110 Group


That was my first thought, too.

But, when someone talks about the dead RC110 group, and you post that
you are receiving mail fine from the RC210 group, I guess I'm just too
much of an idiot to connect the dots of relevance.

Maybe you could do that for me? What does the RC210 group
have to do with the RC110 group in terms of activity?

Or was your 'Duh!' meant for yourself because you misread the post?

Joe M.

WD7F - John in Tucson wrote:

 Duh !

 - Original Message -
 From: MCH [EMAIL PROTECTED]
 To: Repeater-Builder@yahoogroups.com
 Sent: Friday, January 25, 2008 3:13 PM
 Subject: Re: [Repeater-Builder] RC110 Group

 The 210 group is different than the 110 group.

 Joe M.

  WD7F - John in Tucson wrote:
 
  Really?  I get mail from [RC210] rc210 at yahoogroups.com every day.
  Wonder what that's about.
 
 
  - Original Message -
  From: DCFluX
  To: Repeater-Builder@yahoogroups.com
  Sent: Friday, January 25, 2008 11:27 AM
  Subject: Re: [Repeater-Builder] RC110 Group
 
  Yeah, he says the group has been dead for sometime. Anyway I cancelled
  the request.
 
  On 1/25/08, WD7F - John in Tucson [EMAIL PROTECTED] wrote:
 
   Ken Arck - AH6LE
 
   de WD7F
   John in Tucson
 
   - Original Message -
   From: Jim Brown
   To: Repeater-Builder@yahoogroups.com
   Sent: Friday, January 25, 2008 8:36 AM
   Subject: Re: [Repeater-Builder] RC110 Group
 
   I tried to join several times a couple of years ago, and was
   refused by the moderator.  My RC110 has been back to Ken Arc
   and was returned still unreliable.  It will ocationally do a
   reset while you are trying to enter a macro, and will
   ocationally fail to turn on the audio to the link when it
   keys up.  Mine has never worked and I gave up with no
   support.  NHRC controllers work great!
 
   73 - Jim  W5ZIT
 
   DCFluX [EMAIL PROTECTED] wrote:
 
Anyone know who runs the RC110 yahoo group? I've
been trying to sign
up but it seems it requires approval.
 
   
   Never miss a thing. Make Yahoo your homepage.
 
   
 
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   Checked by AVG Free Edition.
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   Date: 1/24/2008 9:58 AM
 
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Re: [Repeater-Builder] RC110 Group

2008-01-25 Thread WD7F - John in Tucson
Ken Arck - AH6LE

de WD7F
John in Tucson

- Original Message - 
From: Jim Brown 
To: Repeater-Builder@yahoogroups.com 
Sent: Friday, January 25, 2008 8:36 AM
Subject: Re: [Repeater-Builder] RC110 Group


I tried to join several times a couple of years ago, and was refused by the 
moderator.  My RC110 has been back to Ken Arc and was returned still 
unreliable.  It will ocationally do a reset while you are trying to enter a 
macro, and will ocationally fail to turn on the audio to the link when it keys 
up.  Mine has never worked and I gave up with no support.  NHRC controllers 
work great!

73 - Jim  W5ZIT

DCFluX [EMAIL PROTECTED] wrote:
  Anyone know who runs the RC110 yahoo group? I've been trying to sign
  up but it seems it requires approval.






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Re: [Repeater-Builder] RC110 Group

2008-01-25 Thread WD7F - John in Tucson
Really?  I get mail from [RC210] rc210 at yahoogroups.com every day.  Wonder 
what that's about.


- Original Message - 
From: DCFluX 
To: Repeater-Builder@yahoogroups.com 
Sent: Friday, January 25, 2008 11:27 AM
Subject: Re: [Repeater-Builder] RC110 Group


Yeah, he says the group has been dead for sometime. Anyway I cancelled the 
request.


On 1/25/08, WD7F - John in Tucson [EMAIL PROTECTED] wrote:
  Ken Arck - AH6LE

  de WD7F
  John in Tucson

  - Original Message - 
  From: Jim Brown 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Friday, January 25, 2008 8:36 AM
  Subject: Re: [Repeater-Builder] RC110 Group


  I tried to join several times a couple of years ago, and was refused by the 
moderator.  My RC110 has been back to Ken Arc and was returned still 
unreliable.  It will ocationally do a reset while you are trying to enter a 
macro, and will ocationally fail to turn on the audio to the link when it keys 
up.  Mine has never worked and I gave up with no support.  NHRC controllers 
work great!

  73 - Jim  W5ZIT

  DCFluX [EMAIL PROTECTED] wrote: 
Anyone know who runs the RC110 yahoo group? I've been trying to sign
up but it seems it requires approval.





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Re: [Repeater-Builder] RC110 Group

2008-01-25 Thread WD7F - John in Tucson
Duh !

- Original Message - 
From: MCH [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, January 25, 2008 3:13 PM
Subject: Re: [Repeater-Builder] RC110 Group


The 210 group is different than the 110 group.

Joe M.

 WD7F - John in Tucson wrote:

 Really?  I get mail from [RC210] rc210 at yahoogroups.com every day.
 Wonder what that's about.


 - Original Message -
 From: DCFluX
 To: Repeater-Builder@yahoogroups.com
 Sent: Friday, January 25, 2008 11:27 AM
 Subject: Re: [Repeater-Builder] RC110 Group

 Yeah, he says the group has been dead for sometime. Anyway I cancelled
 the request.

 On 1/25/08, WD7F - John in Tucson [EMAIL PROTECTED] wrote:

  Ken Arck - AH6LE

  de WD7F
  John in Tucson

  - Original Message -
  From: Jim Brown
  To: Repeater-Builder@yahoogroups.com
  Sent: Friday, January 25, 2008 8:36 AM
  Subject: Re: [Repeater-Builder] RC110 Group

  I tried to join several times a couple of years ago, and was
  refused by the moderator.  My RC110 has been back to Ken Arc
  and was returned still unreliable.  It will ocationally do a
  reset while you are trying to enter a macro, and will
  ocationally fail to turn on the audio to the link when it
  keys up.  Mine has never worked and I gave up with no
  support.  NHRC controllers work great!

  73 - Jim  W5ZIT

  DCFluX [EMAIL PROTECTED] wrote:

   Anyone know who runs the RC110 yahoo group? I've
   been trying to sign
   up but it seems it requires approval.

  
  Never miss a thing. Make Yahoo your homepage.

  

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Re: [Repeater-Builder] 220 MHz. Amplifier?

2008-02-02 Thread WD7F - John in Tucson
Here's my design for a power amp used on a Micor high band VHF converstion. 
Not for the faint of heart.

http://home.comcast.net/~micorrepeater/  Check out the PA link at the top.

de WD7F
John in Tucson

- Original Message - 
From: Robin Midgett [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Friday, February 01, 2008 6:23 PM
Subject: [Repeater-Builder] 220 MHz. Amplifier?


I have a friend who's looking for a 80 or so watt amplifier for his
224.84 MHz. repeater. Is there a recommended product for this
application these days? Mods or kit building are welcomed, as are
leads on plug-n-play solutions.

Thank you,
Robin Midgett K4IDC
VHF+ Glutton EM66se
6, 2, 222, 432, working on the rest!






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Re: Re: [Repeater-Builder] Re: software repeater controller

2008-06-19 Thread WD7F - John in Tucson
FYIwaste  Waist is what I no longer have !  I'm just round !

- Original Message - 
From: Ron Wright [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, June 19, 2008 9:10 AM
Subject: Re: Re: [Repeater-Builder] Re: software repeater controller


 This was what I was told over 30 years ago...why put a micro on a 
 repeater...a waist.  In the commerical world where get input key 
 transmitter yes a micro a waist.

 Well I did and it opened up all kinds of possibilities.  We wanted a 
 tail...add hardware or add software...want a timeout, add hardware or add 
 software...want a tail beep, add hardware or software...want control, add 
 lots of hardware or software with a DTMF IC...want remote base/link add 
 lots of hardware or software with 2 transitors...CW ID add lots of 
 hardware or software.  These are the old simple stuff, but very quickly 
 software base control becomes much cheaper and simpler.

 The with the PC you got all that power including sound card, internet for 
 Echolink/IRLP, etc.

 However, the better repeaters pay more attention to RF side, but a 
 controller can be fun to play with and can have important expansion 
 features.

 73, ron, n9ee/r






From: Alexandre Souza [EMAIL PROTECTED]
Date: 2008/06/18 Wed PM 01:29:48 EDT
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: software repeater controller


 For multiple audio ports these days I'd recommend using USB audio
 devices.  ISA slots are way gone and PCI slots aren't far behind. For
 an embedded PC controlling radios 24/7 you want something small, quiet
 and low power, most form factors that fit that description usually
 have few if any PCI slots.

A PC controlling a repeater?!?!?! What is the problem of using a small
microcontroller, with some BASIC programming???

You are using a cannon to kill a microbe he he he




 Ron Wright, N9EE
 727-376-6575
 MICRO COMPUTER CONCEPTS
 Owner 146.64 repeater Tampa Bay, FL
 No tone, all are welcome.



 



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[Repeater-Builder] SADL or EPLRS ?

2008-08-20 Thread WD7F - John in Tucson
It appears that we (mouse in pocket etal) have SADL/EPLRS problems on a few 
UHF machines here in Tucson.  Anybody had any dealings with this government 
muti agency system causing problems?

SADL:  Situation Awareness Digital Linking
EPLRS:  Enhanced Position Pocation Reporting System

We have A-10s and EC-130s here and many other agencies that probably are 
using this stuff in the 430 - 450 MHz range.

I get the feeling that I've opened a can of worms.

de WD7F
John in Tucson





Re: [Repeater-Builder] Re: SADL or EPLRS ?

2008-08-20 Thread WD7F - John in Tucson
Thanks Skipp.  Yes, you're right.  I'm in the process of locating the guy 
to talk to.  I had a big awakening this morning when I went to the base and 
tried to find the equivalent of my old job, Avionics Superentendent, and it 
has drastically changed since I retired in 80.  However, through the Command 
Chief Master Sergeant, I'm on the track and, yes, I'll be nice.  I started 
in Armament  Electronics (AE) which begat Avionics Maintenance Squadron 
(AMS) which begat Component Repair Squadron (CRS) which has evolved into 
Component Maintenance Squadron (CMS).  It's apparent that the military 
thrives on change...either that or they keep moving things so nobody can 
figure out what they're doing.

Popcorn is what we call it, and we can see what appears to be spread 
spectrum pulses on the scope.  A couple years ago, it would be on during the 
day and off at night and weekends.  Now it's 24/7 and getting stronger. 
And, I miss-spoke, it's 420 - 450 as you said.

At least you give me a little hope with your comments and if I can find that 
friendly someone and buy him (her) a beer, I might do some good.

de WD7F
John in Tucson

- Original Message - 
From: skipp025 [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, August 20, 2008 9:08 AM
Subject: [Repeater-Builder] Re: SADL or EPLRS ?


 Re: SADL or EPLRS

 Hi John,

 You MIGHT be able to find the contact person for the system.
 Probably your first task... followed by trying to open a very,
 very friendly dialog with said person(s).

 Advise them they are able to operate their EPLRS System below
 420 MHz where the interference would be less to BOTH parties.

 A sidebar question of user authority in the band is based on
 emission designators. Although the Military may be a primary
 user in the band, their operation as the primary user does not
 include the type of emissions (emission designation) output
 from an EPLRS system.  Depending on which wind-mill you want
 to chase... a case can be presented where the EPLRS emissions
 are secondary to Amateur operation and the resultant interference
 is a secondary service, which you could request be relocated.

 The only real world fix is to find the right person(s), provide
 reasons why their relocation down the band would be prudent and
 hope like hell they are reasonable. With the proper politics
 information and attitude you might have some luck (like I/we did).

 Then along cave Pave Paws...

 EPLRS will sound like a popping noise in your repeater receiver.

 good luck

 s.


 WD7F - John in Tucson [EMAIL PROTECTED] wrote:

 It appears that we (mouse in pocket etal) have SADL/EPLRS problems
 on a few
 UHF machines here in Tucson.  Anybody had any dealings with this
 government
 muti agency system causing problems?

 SADL:  Situation Awareness Digital Linking
 EPLRS:  Enhanced Position Pocation Reporting System

 We have A-10s and EC-130s here and many other agencies that probably
 are
 using this stuff in the 430 - 450 MHz range.

 I get the feeling that I've opened a can of worms.

 de WD7F
 John in Tucson
 



Re: [building-repeaters] Re: [Repeater-Builder] Re: Micor to 222 MHz PA Conversion

2008-09-03 Thread WD7F - John in Tucson
If you want to see how many hoops we jumped through to convert a high-band VHF 
Micor to 220 go here:  There's a PA link near the top.
http://home.comcast.net/~micorrepeater/

de WD7F
John in Tucson

  - Original Message - 
  From: [EMAIL PROTECTED] 
  To: [EMAIL PROTECTED] ; Repeater-Builder@yahoogroups.com ; [EMAIL PROTECTED] 
  Cc: Kevin Custer 
  Sent: Wednesday, September 03, 2008 7:29 AM
  Subject: Re: [building-repeaters] Re: [Repeater-Builder] Re: Micor to 222 MHz 
PA Conversion


  Kevin,

  I've been meaning to postabout a similar project, and this prompts me to ask 
- have you done this to rebuild a UHF amp?

  I have several dead TLD-1713 UHF 75w PAs, and need a good PA or two at the 
moment. Rather than messing with trying to find Moto transistors, caps, and 
Z-matches, I was thinking of stripping the heatsink down, buying two Mx UHF 
40-50w modules, and trying to combine them.  

  I was curious as to how they would hold up under continuously linked repeater 
duty

  Can you provide some more details on the 'Wilkinson power dividers?  I have 
experience with HF torroid combiners/splitters, but UHF is another animal 
altogether.  Do you sell them with the boards? 

  Is it as simple as mounting the two modules (and the supporting RB circuit 
boards), the combiner/splitters, and wiring it all up?  

  I'd like to get a UHF one together asap.

  Thanks
  Eric
  KE2D


-- Original message -- 
From: Kevin Custer [EMAIL PROTECTED] 

Joe Burkleo wrote: 

Kevin
Thanks for the information. I figured that if anyone had tried it you
would be aware.

I was just looking for more than 30 Watts out.
  
Scott and I have been successful in building small IPA's (intermediate 
power amplifiers) that take the power from the exciter and make 3/4 to 1 watt 
with a single transistor.  This stage then feeds a Wilkinson power divider and 
it feeds two of these brick devices.  Another WPD is used to combine the power. 
 About 75 to 80 watts is possible.  We have a prototype that has one brick 
module (as the IPA) feeding four more, and over 150 watts is possible. 

We never fully developed the 150 watt high-power version because the single 
brick PA we build will easily deliver enough drive for any good external 220 
PA, however we do have several of the 75 watt versions in service.

Can these modules be considered continuous duty if they are properly
mounted on a Micor station PA chassis.
  
Absolutely - especially if running one or two modules.  

In addition, we actually use the MICOR power set control to retain all of 
its features (SWR protection, power leveling, etc.)  The AMP BD that Scott 
builds has the pass transistor built on it and it is run from the power set 
control lead that originally went to the MICOR PA.

Scott also builds a custom heat spreader that is used to mate the module to 
the MICOR heatsink.  This eliminates the need to machine a flat spot on the 
heatsink that big enough for the surface of the module.  While Scott doesn't 
advertise these, I feel sure he would sell them individually; they are used in 
our custom 220 MICOR conversions.  The heat spreader is not necessary in a 
MASTR II conversion, as there are no protruding 'bosses' for the original 
mounting of the RF power output transistors.  The pictures in this document 
shows the mounting arrangement he has developed:
http://www.repeater-builder.com/products/ampbddocs.pdf

Good luck and let us know how you make out...

Kevin Custer
Repeater Builder




   






Fw: [building-repeaters] Re: [Repeater-Builder] Re: Micor to 222 MHz PA Conversion

2008-09-03 Thread WD7F - John in Tucson
Forgot to addI never persued the SWR power reducing beyond the simple 
divider.  Our converstion won't drop power all the way to zero when there's an 
SWR problem..yet.  Once, the controller got confused and keyed the repeater 
over night at about 60 watts out without a problem.  I think it's bullet proof 
in that respect.

de WD7F
John in Tucson
  
- Original Message - 
From: WD7F - John in Tucson 
To: Repeater-Builder@yahoogroups.com 
Sent: Wednesday, September 03, 2008 8:46 AM
Subject: Re: [building-repeaters] Re: [Repeater-Builder] Re: Micor to 222 MHz 
PA Conversion


If you want to see how many hoops we jumped through to convert a high-band VHF 
Micor to 220 go here:  There's a PA link near the top.
http://home.comcast.net/~micorrepeater/

de WD7F
John in Tucson

  - Original Message - 
  From: [EMAIL PROTECTED] 
  To: [EMAIL PROTECTED] ; Repeater-Builder@yahoogroups.com ; [EMAIL PROTECTED] 
  Cc: Kevin Custer 
  Sent: Wednesday, September 03, 2008 7:29 AM
  Subject: Re: [building-repeaters] Re: [Repeater-Builder] Re: Micor to 222 MHz 
PA Conversion


  Kevin,

  I've been meaning to postabout a similar project, and this prompts me to ask 
- have you done this to rebuild a UHF amp?

  I have several dead TLD-1713 UHF 75w PAs, and need a good PA or two at the 
moment. Rather than messing with trying to find Moto transistors, caps, and 
Z-matches, I was thinking of stripping the heatsink down, buying two Mx UHF 
40-50w modules, and trying to combine them.  

  I was curious as to how they would hold up under continuously linked repeater 
duty

  Can you provide some more details on the 'Wilkinson power dividers?  I have 
experience with HF torroid combiners/splitters, but UHF is another animal 
altogether.  Do you sell them with the boards? 

  Is it as simple as mounting the two modules (and the supporting RB circuit 
boards), the combiner/splitters, and wiring it all up?  

  I'd like to get a UHF one together asap.

  Thanks
  Eric
  KE2D


-- Original message -- 
From: Kevin Custer [EMAIL PROTECTED] 

Joe Burkleo wrote: 

Kevin
Thanks for the information. I figured that if anyone had tried it you
would be aware.

I was just looking for more than 30 Watts out.
  
Scott and I have been successful in building small IPA's (intermediate 
power amplifiers) that take the power from the exciter and make 3/4 to 1 watt 
with a single transistor.  This stage then feeds a Wilkinson power divider and 
it feeds two of these brick devices.  Another WPD is used to combine the power. 
 About 75 to 80 watts is possible.  We have a prototype that has one brick 
module (as the IPA) feeding four more, and over 150 watts is possible. 

We never fully developed the 150 watt high-power version because the single 
brick PA we build will easily deliver enough drive for any good external 220 
PA, however we do have several of the 75 watt versions in service.

Can these modules be considered continuous duty if they are properly
mounted on a Micor station PA chassis.
  
Absolutely - especially if running one or two modules.  

In addition, we actually use the MICOR power set control to retain all of 
its features (SWR protection, power leveling, etc.)  The AMP BD that Scott 
builds has the pass transistor built on it and it is run from the power set 
control lead that originally went to the MICOR PA.

Scott also builds a custom heat spreader that is used to mate the module to 
the MICOR heatsink.  This eliminates the need to machine a flat spot on the 
heatsink that big enough for the surface of the module.  While Scott doesn't 
advertise these, I feel sure he would sell them individually; they are used in 
our custom 220 MICOR conversions.  The heat spreader is not necessary in a 
MASTR II conversion, as there are no protruding 'bosses' for the original 
mounting of the RF power output transistors.  The pictures in this document 
shows the mounting arrangement he has developed:
http://www.repeater-builder.com/products/ampbddocs.pdf

Good luck and let us know how you make out...

Kevin Custer
Repeater Builder




   






Re: [Repeater-Builder] Volt-Amp (Re: APC UPS Charging Power)

2008-09-17 Thread WD7F - John in Tucson
Thank you Eric Lemmon !  Your explanation is the most precise I've read thus 
far.
The last line of your last paragraph said what folks want to hear.  I 
started to respond
to this thread earlier, but after a few minutes of organizing my thoughts, 
my aging pea-brain
said, Forget this and go get another gin  tonic !  What's another few 
brain cells anyway ?

de WD7F
John in Tucson

- Original Message - 
From: Eric Lemmon [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, September 16, 2008 9:59 PM
Subject: RE: [Repeater-Builder] Volt-Amp (Re: APC UPS Charging Power)


 John,

 You are correct that when the power factor is 1.00, the current is in 
 phase
 with the voltage, as it will be in a purely resistive circuit.  In this
 unique case, watts equals volt-amperes.  However, when the load is 
 reactive,
 the current either leads or lags the applied voltage.  A typical case is a
 lightly-loaded induction motor, which may exhibit a power factor around
 0.65, which is considered to be a poor PF.  Some of the current drawn by
 this motor is used to create torque and perform actual work, and this
 current is nearly in phase with the applied voltage.  Some current causes
 heating of the copper windings and the field core, and this current is 
 also
 nearly in phase with the applied voltage.  Both of these currents consume
 true power and are measured in watts.  However, a significant amount of
 current does nothing but magnetize the field windings during part of the 
 AC
 cycle, and that reactive energy is returned to the source as the magnetic
 field collapses just before the field is built up with the opposite 
 polarity
 during the other half of the AC cycle.  There are additional reactive
 losses, such as eddy-current and hysteresis losses, but the magnetizing
 currents are lagging the applied voltage, so they are the cause of 
 apparent
 power which is expressed in volt-amperes reactive, also known as VARs.

 As was discussed at great length in this forum several months ago, one
 cannot measure true power with separate voltage and current meters.  That 
 is
 because the readings of separate meters are not synchronized in time. 
 Even
 if one uses two true RMS DVMs to measure voltage and current, one still
 winds up with nothing more than apparent power based upon volts times
 amperes, or volt-amperes.

 To measure true power, one must use an AC power meter that synchronously
 measures current and voltage throughout the entire cycle.  This can be
 performed by a device called a four-quadrant multiplier which, as its 
 name
 implies, performs the multiplication of current and voltage through 360
 degrees of phase rotation.  One such instrument is a VIZ Instruments 
 WD-767
 Digital Wattmeter, which sold for about $925.  Another device which has
 become very popular with Hams is the Kill-A-Watt meter that costs about
 $20 from several Internet vendors.  Although not as accurate as the 
 WD-767,
 it does perform quite well.

 As I stated in an earlier post, the rotating-disk kWH meter on the typical
 residence measures only true power.  It does this magic by combining the
 magnetic fields of two coils: a voltage coil that is connected in parallel
 with the load, and a current coil that is in series with the load.  The
 angular displacement of these coil windings is precisely set so that only
 currents that are exactly in phase with the voltage result in a torque to
 turn the aluminum disk.  A small permanent magnet is placed near the disk 
 so
 that the speed of the disk is proportional to the amount of true power 
 being
 consumed.  Since speed is movement over time, the disk is geared to a
 register that accumulates the number of rotations, which represents power
 over time, which is energy.  Thus, the meter measures kilowatthours.  You
 pay only for the true power that you actually use; you do not pay for
 apparent power since volt-amperes is not true power.

 73, Eric Lemmon WB6FLY


 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:[EMAIL PROTECTED] On Behalf Of John Barrett
 Sent: Tuesday, September 16, 2008 9:13 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: Re: [Repeater-Builder] Volt-Amp (Re: APC UPS Charging Power)

 This doesn't mesh up with what I've learned about power factor -- the
 impression that I got was a perfect power factor was 1 (one) (current in
 phase with voltage, equipment using everything the the power company
 charges you for to do useful work). Anything other than PF=1 meant that
 the equipment was using the power less efficiently, and therefore you
 were paying more in KWH than the work actually performed. That
 description excludes the possibly that the equipment could use more
 power than the power company records as being delivered (heck,
 conservation of energy says that in any case). any load reactance
 (inductive or capacitive) and the very low PF numbers stated sound more
 like what I get off my linear power supplies

Re: [Repeater-Builder] 2 meter noise help!

2009-01-28 Thread WD7F - John in Tucson
Does it sound like popcorn?  We are plagued with SADL/EPLRS from the air 
base here in Tucson, however, it's on UHF.  It's sweeping pulses betweeen 
420 and 450 and since they have an alert commitment, it's on 24/7.  A couple 
years ago, it only occured once in a while but now it's continuous.  I 
haven't heard of anyone having similar on 2 meters.

Just curious.
de WD7F
John in Tucson

- Original Message - 
From: Joe k1ike_m...@snet.net
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, January 28, 2009 7:45 AM
Subject: Re: [Repeater-Builder] 2 meter noise help!


 Have you taken a yagi on the roof and tried to determine the direction
 of the noise?  I find that using the AM mode (on my handheld scanner or
 HT) is easier to pinpoint some forms of noise.  You didn't say that you
 eliminated the antenna.  Using the yagi on the roof should give you an
 idea of where (or where not) the noise is coming from.

 I've been off packet radio for years, but one of the experiments I
 always wanted to do is try and audio DSP unit to eliminate some forms of
 noise.  Many people don't realize it, but you have discovered how
 destructive noise can be to a packet AFSK signal.  I had a bad power
 line insulator/tie wire combination outside my house that completely
 decimated my Netrom node digipeater.  The signal sounded good to the
 human ear, but the TNC just couldn't decode anything but a full quieting
 signal.

 73, Joe, K1ike

 Christopher K. Greenhalgh wrote:
 While not a true repeater, I hoping the gurus here can help me.

 Station info can be seen here; http://www.n8wct.com/n8wct-4/

 The noise is a subtle low-frequency bacon crackling. It is apparent
 across the whole 2 meter band. Every piece of (my) equipment has been
 replaced, or substituted. We even bypassed the filter, turned
 everything off, and the noise was still present, even on battery
 power. SWR is fine...the station can be heard 90 miles away.


 



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6:15 PM



Re: [Repeater-Builder] Re: MSR 2000 simplex base station conversion to repeater

2009-05-21 Thread WD7F - John in Tucson
Thanks Skipp...I was thinking there was more info on changing the base 
station to a repeater and as Oliver said Sir, I want more !.
de WD7F
John in Tucson

- Original Message - 
From: skipp025 skipp...@yahoo.com
To: Repeater-Builder@yahoogroups.com
Sent: Thursday, May 21, 2009 11:16 AM
Subject: [Repeater-Builder] Re: MSR 2000 simplex base station conversion to 
repeater


 Hi John,

 Got to lay off the brandy so early in the morning... :-)

 3rd one down from the blue bar:

 sqlgate.zip - Revised MSR2000 to external controller conversion.

 http://www.radiowrench.com/sonic/so02004.html

 cheers,
 s.

 WD7F - John in Tucson w...@... wrote:

 Skipp, where on the /sonic page is the MSR2000 info?  I know I had a 
 couple
 extra glasses of wine at my grand-daughter's graduation party last night,
 however..duh !
 de WD7F
 John in Tucson

 - Original Message - 
 From: skipp025 skipp...@...
 To: Repeater-Builder@yahoogroups.com
 Sent: Thursday, May 21, 2009 8:02 AM
 Subject: [Repeater-Builder] Re: MSR 2000 simplex base station conversion 
 to
 repeater


  mike mzfb@ wrote:
  To complete an MSR2000  and provided you have the correct
  modules for a repeater, you will also need to put in the correct
  Jumpers. Maybe someone who has done this could provide just
  the jumpers that are needed to be installed to make the unit a
  repeater. Then one could check to make sure the unit is working
  correctly and then modify it according to the needs of the user.
  From that point one could tie in the controller of their chose ect.
  Mike
 
  And that information can be found at www.radiowrench.com/sonic
 
  cheers,
  s.
 
 
 
  
 
 
 
  Yahoo! Groups Links
 
 
 


 



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 05/19/09
 17:59:00





 



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06:22:00



Re: [Repeater-Builder] Dual Receive Antennas

2009-06-24 Thread WD7F - John in Tucson

- Original Message - 
From: Jeff DePolo j...@broadsci.com
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, June 24, 2009 12:20 PM
Subject: RE: [Repeater-Builder] Dual Receive Antennas



 You can't get there from here.

 Trying to add the yagi to the omni using power division topside isn't 
 going
 to yield easily-predictable results.  You'll have all kinds of pattern
 interaction between the two, with new nulls falling in quasi-random areas
 lacking sophisticated modeling.

 Your best bet is to feed the yagi with an independent feedline and bring 
 it
 into a dedicated receiver.  Vote the two receivers, or use different PL
 tones (PL steering).  Depending on where the yagi is mounted on the 
 tower
 and its proximity to the duplexed (transmitting) antenna, you may need
 additional filtering on that line as well.

 How much more gain toward the critical station do you need over what you
 have now?  Chances are you're only going to pick up a couple of dB's by
 using a yagi as compared to your existing omni assuming it's a decent
 antenna to start with.  A 7-element yagi has somewhere around 10 dBd gain,
 which is probably only 4 dB or so over a good VHF omni or on par with a
 high-gain UHF omni (you didn't mention what band we're talking about).

 --- Jeff WN3A


 -Original Message-
 From: Repeater-Builder@yahoogroups.com
 [mailto:repeater-buil...@yahoogroups.com] On Behalf Of Scott
 Sent: Wednesday, June 24, 2009 2:08 PM
 To: Repeater-Builder@yahoogroups.com
 Subject: [Repeater-Builder] Dual Receive Antennas



 OK, I can't get this straight as to how to do it...

 one repeater, with duplexer, an omni antenna for TX and RX,
 and a yagi added for RX in one direction to pull in a
 critical station.

 What is the best cheapest way?

 de NA4IT





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Re: [Repeater-Builder] unsubscribe

2009-08-11 Thread WD7F - John in Tucson
Why not try to follow the instructions at the bottom of the page?
  - Original Message - 
  From: b 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Tuesday, August 11, 2009 3:00 PM
  Subject: [Repeater-Builder] unsubscribe









  


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06:10:00


Re: [Repeater-Builder] Spinning disk wattmeter...

2009-10-05 Thread WD7F - John in Tucson
Go buy yourself a Kill-A-Watt...less than $30.  Has several modes, e.g., 
voltage, frequency, average power, peak power,etc. and works great for the 
price.
de WD7F
John in Tucson

- Original Message - 
From: Thomas Oliver tsoli...@tir.com
To: Repeater-Builder@yahoogroups.com
Sent: Monday, October 05, 2009 7:31 AM
Subject: Re: [Repeater-Builder] Spinning disk wattmeter...


I bought some off ebay a couple years ago I think this is the same guy.

 I have $25.00 into mine so it would be cheeper to get yours directly from
 him.

 tom

 http://cgi.ebay.com/single-GE-I70-meter-watthour-watt-electric-utility_W0QQi
 temZ250505742954QQcmdZViewItemQQptZBI_Electrical_Equipment_Tools?hash=item3a
 534e4a6a_trksid=p3286.c0.m14


 [Original Message]
 From: Mike Morris WA6ILQ wa6...@gmail.com
 To: Repeater-Builder@yahoogroups.com
 Date: 10/5/2009 3:17:23 AM
 Subject: Re: [Repeater-Builder] Spinning disk wattmeter...

 At 06:34 PM 10/04/09, you wrote:
 I have one that I use every once in a while.  It works well at
 determining the power usage of a repeater at a site.  I don't want
 to give mine away, but I would lend it out to you.  I will want it
 back, though.  It weighs about 15 pounds, so shipping and the
 eventual return shipment may be more than he wants to spend.

 I appreciate the loan offer, both from you and from
 several others, but I think that he (or I) will want it
 around for making measurements in the future.

 I found mine at the dump.  It is a 120VAC 15 Ampere, 60 cycle,
 2-wire unit.  I even got the box with it, and I put an AC cord and
 plug on the box.  This evidently came off one of the old summer
 homes that are around the local lakes of Connecticut.  Many of these
 summer homes were very small and sparse, no heat not running water,
 from the 1920's and up in time.  Electricity was a luxury and they
 did have 15 Amp services.

 That's exactly what we need - a four-wire meter (120V in, neutral in,
 120V out, neutral out) at anywhere from 15 to 60 amps.  And I've seen
 one that looked like it had three wires (in out and neutral), but I never
 saw it in operation.

 Maybe a local electrician around your area may have run into
 something similar out where you are?

 This request came in saturday morning, I spent all day
 saturday on a deployment, and not many electricians
 are in their offices / shops on a sunday...  I'll ask around
 during the week.

 73, Joe, K1ike

 Mike WA6ILQ




 



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18:42:00



Re: [Repeater-Builder] Radio conversion to 225MHZ

2009-10-16 Thread WD7F - John in Tucson
We used a TU-50 splitter and two SAV-15 power modules and modified the 
existing driver.  We ended up with about 73 watts and turned it down a bit. 
Also used a form of the Wilkinson combiner for the outputs.  We ground and 
polished the existing heat sink to mount the modules on and we know it's 
just about bullet proof.  One at least two occasions the RC-210 controller 
keyed it all night.  No problem.

You can read all about it on K7IOU Dave's page 
http://home.comcast.net/~micorrepeater/

de WD7F
John in Tucson


- Original Message - 
From: Kevin Custer kug...@kuggie.com
To: Repeater-Builder@yahoogroups.com
Sent: Friday, October 16, 2009 6:08 PM
Subject: Re: [Repeater-Builder] Radio conversion to 225MHZ


 K5IN wrote:
 Kevin,


 Any suggestions for a decent quality 220mhz amp for repeater duty?

 Micor 20-25 watts drive or pull the PA and exciter in and 50-60 watts 
 output?

 For 50 watts, we use two Japanese power modules and Wilkinson power
 dividers for splitting and combining.  We build an IPA that supplies the
 required drive for the two modules, it's a one transistor buffer that
 puts out about 1 watt but it's output is variable from 1/2 watt to 1
 watt.  This drives the two modules in parallel and the output is
 combined with another Wilkinson.

 I think Scott has pictures - it was never officially written up that
 I'm aware of.

 Kevin




 



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18:39:00



Re: [Repeater-Builder] if you have a commercial licenses check it on the fcc site

2010-03-29 Thread WD7F - John in Tucson
I was able to use my full name in a search and it came up, however, I had a 
ship's radar endorsement that's not shown.  What good is the GROL anyway?  
Does anyone honor it?
de WD7F
John in Tucson

  - Original Message - 
  From: Don Davison 
  To: Repeater-Builder@yahoogroups.com 
  Sent: Monday, March 29, 2010 12:47 PM
  Subject: Re: [Repeater-Builder] if you have a commercial licenses check it on 
the fcc site





  same problem Don, but a slightly different approach.  May want to wait a day 
or 2...problem(?)  From the past tial (and success) I noticed my issue date for 
the GROL was different than perceived.  Perhaps a change in recording created a 
different date (date of the recording change).  What comes to mind is when the 
FCC changed from 1st class designation to the GROL ident., but I'm not sure.

  Don kb0caq




--
  From: Don Kupferschmidt dkupf...@sbcglobal.net
  To: Repeater-Builder@yahoogroups.com
  Sent: Mon, March 29, 2010 2:03:30 PM
  Subject: Re: [Repeater-Builder] if you have a commercial licenses check it on 
the fcc site



  I have both amateur and commercial licenses with them.  I'm having problems 
trying to access their database.  I went to QRZ, looked up my license, then 
hyperlinked to the FCC web page from QRZ's listing.  There I found my FRN 
number and inserted it onto the ULS license database for commercial licenses.  
It didn't find anything.  Can someone tell me what I'm doing wrong?

  TIA,

  Don, KD9PT




- Original Message - 
From: Joe 
To: Repeater-Builder@ yahoogroups. com 
Sent: Monday, March 29, 2010 8:26 AM
Subject: Re: [Repeater-Builder] if you have a commercial licenses check it 
on the fcc site


  
I finally found the link to the database, the FCC makes nothing easy. 
Here it is:

http://wireless2. fcc.gov/UlsApp/ UlsSearch/ searchFrc. jsp;JSESSIONID_ 
ULSSEARCH= tvF3LwnPwJvK9fNV 5tTvYBFhHq63rMp7 GHRY7yLR3QWF27W6 hF00!-392727333! 
-1803037743

Only 152 characters to type, error free. Or use this:

http://tinyurl. com/yzaby3r

I'm in it, so I can now loose my paper copy worry free.

73, Joe, K1ike*
*

Fuggitaboutit wrote:
 many people dont realize that the fcc has never put your old grol (ie) 
 on the new FCC data base that was started in the late 90s 
 it seems that if you had a grol before 1998 or thereabouts ( the 
inception of the fcc online data base), then your license may not be in the 
database
 forget trying to get them to look up your paper license 
 if you lose the paper license, you are out of luck and will have to 
retest 
 you may be able to call them up and tell them your info from your copy 
 these licenses are still classified as lifetime licenses 
 check yours on line on their site just to make sure its in there 
 you probably have checked the site for your amateur information
 don't be surprised if you think you have a valid commercial license and 
 you discover there is no record of it on the fcc site

 






  


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18:32:00


Re: [Repeater-Builder] Legal radios for a repeater

2010-05-31 Thread WD7F - John in Tucson
Ah ha!  Now I have it...your job title explains the comment about Part 90.
de WD7F
John in Tucson

- Original Message - 
From: Kris Kirby k...@catonic.us
To: terry dalpoas km...@yahoo.com
Cc: Repeater-Builder@yahoogroups.com
Sent: Sunday, May 30, 2010 12:57 PM
Subject: Re: [Repeater-Builder] Legal radios for a repeater


 On Sat, 29 May 2010, terry dalpoas wrote:
 I was asked the other day by a friend if you could use an older mobile 
 (Micor, Mitrek, Mastr II and Exec) that has been duplexed for a 
 repeater in GMRS, public safety, etc.  I told them that I was pretty 
 sure it was legal since the transmitters are FCC type accepted and as 
 long as they transmit a clean signal.  Was I correct on this?
 
 For ham use, literally anything as long as it doesn't cause harmful 
 interference to other services.
 
 For Part 90 use, something narrowband complaint because the deadline is 
 a loomin'.
 
 --
 Kris Kirby, KE4AHR
 Disinformation Analyst