Make that MASTR! not Master. I DO know how to spell it ;-)
The only thing that is worse is to see someone write Master 11, what the
hell is a master eleven?
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Ken Arck wrote:
At 01:09 PM 5/22/2004 -0400, you wrote:
Why? I've done it for about 15 years. I can't use it within about 60 kHz
of the local repeater, but otherwise it's fine. I just used a cavity to
notch out the repeater TX. The loss of sensitivity near the repeater TX
JOHN MACKEY wrote:
I am curious to know if anyone has ever tried to make a portable repeater out
of a Johnson PPL-6000 UHF? I had a friend of mine recently tell me they make
good small repeaters wondered what the experiences were of others?
Johnny,
Here is some information on the PPL-6000
was probably one of his more popular products but he did make some preamps and other goodies for a while too. I believe he got out of the biz quite a while ago. And if I'm not wrong, I believe I heard he passed away?
He did:
http://arats.hamgate.net/may01.pdf
Kevin Custer
Yahoo! Groups
energy as it will be powered by a solar backed lead acid
battery. The repeater will likely run about 5 watts.
Repeater Builder
(Kevin Custer W3KKC - Scott Zimmerman N3XCC)
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not necessarily repeater related.
Kevin Custer - Scott Zimmerman
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Ken Arck wrote:
Hi kids
I'm tuning up a T1504A, which has the 430 - 470 cable set on it. Everything
looks good, except for one cavity - one of the lowpass/hi reject ones. I
can't seem to get a very good null on it, regardless of the loop position.
As a matter of fact, the reject seems to be
As a matter of fact, the reject seems to be getting better when it runs
up against the outside edge of the adjustment slot. But I never find a
definate point. The other 3 cavities are great - a nice, sharp, deep null,
just about centered in the slot.
I would guess you verified the 'rough'
The link should have read:
http://www.repeater-builder.com/products/audioprocessingorder.html
Kevin Custer wrote:
Go here for more details and ordering information:
http://www.repeater-builder.com/products/processingorder.html
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Steve S. Bosshard (NU5D) wrote:
I used to take some waxed wiring lace and thread it inside the coil form
for the core to work against.
Kept the wiring lace right next to the replacement dial string.
Dental floss and thin rubber bands work well too.
Kevin
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I agree
Charles Miller wrote:
kevin,
The only thing I have against rubber bands is that they tend to degrade over
a period of time. Dental floss and waxed string last a lot longer.
Charles Miller
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Mathew Quaife wrote:
Is this unit able to be converted into a repeater for use in the 2 meter
band?
Yup:
http://www.repeater-builder.com/rbtip/micorvhfmobile.html
http://www.repeater-builder.com/rbtip/sensitronRX.html
http://www.repeater-builder.com/rbtip/micorhelicalresearch.html
frequency that isn't 600 kc away or a division of it.
Kevin Custer
Michael Singewald N1PLH wrote:
There are two machines on the same tower on these frequencies with
one antenna about 20 feet directly over the other. Each machine is
putting out about 30 - 50 watts. Each machine plays fine
Michael Singewald N1PLH wrote:
I don't understand the problem with the small difference in transmit
frequency. The transmit frequency is still about 1 meg away from the
receive frequency of the other repeater. How far apart in frequency
would they ahve to be to co exist while running
[EMAIL PROTECTED] wrote:
Hi Kevin,
Virgil mentioned thathe had looked at the
manual and noted that the TA-51 uses RC phase modulation. A-ha! The
light went on. You can only get 90 degrees of phase shift max with an
RC circuit.Had they used an LC phase modulator,
, a
clipper and low pass filter should be implemented when using any
modulator capable of deviating beyond the acceptable bandwidth of the
particular service/frequency spectrum.
Kevin Custer
Steve Grantham wrote:
Well... Does anyone think it would be feasible or practical to
modify the TA
the
Squelch Gate Module interfaces. As the article suggests, I don't care
for the squelch gate module for my applications, but your situation may
be different.
Hope this helps...
Kevin Custer
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Hi,
If this if for amateur use, there is a much easier way.
You can use one simplex intermittent duty radio at one end connected to
the link port of a controller at that site. Nothing needs installed at
the other site . Remote base linking is popular and economical. For
the hop suggested,
The high current part of a Micor power supply is not regulated, but
other parts of it are. It is common to see 16 volts with no load in the
high current (big screw terminals) of the supply.
Kevin
David Schornak wrote:
any one know what the max dc volts a micor can take before it cooks?
I
David Schornak wrote:
power supply model number is TPN1186A
and yes there is a couple of regulated
out puts and one will go to the tmd700 mobile the other to the
controller. so the micors where going to run off the pa connector which
is not regulated.
Again, Don't worry
Richard wrote:
I can submit it for posting on the repeater-builder site; who can I send it to?
[EMAIL PROTECTED]
Thanks...
Kevin Custer
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Ken Arck wrote:
At 02:22 PM 4/9/2004 -0400, you wrote:
Either run AC fans or use a different power supply than the one running
your repeater to power those DC ones
---I'm running two 12 Vdc fans in my Micor repeater. I use a 200 uh choke
in each lead (+ -)
mch wrote:
Neil McKie wrote:
Low band Micor Station manual P/n 68P81013E60-F dated 2/11/77:
Exciter Model Series consiting of the following:
Channel Element Req'd
ModelFreq Range Carrier Digital
and PL
Joe M wrote:
I would say every year is my estimate. Do you know of any tricks to lengthen
the duration the connections last, Kevin?
Use silver bearing solder, it's stronger.
Last, on the static busters, do they have to be the highest item on the tower?
No, the highest item on the antenna
Repeater Builder. Oh yes, they will work
with either an FM or PM exciter :)
Kevin Custer
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Your use of Yaho
Paul Guello wrote:
I put a dc fan on the portable repeater and now I get a slight buz on
the audio. Anybody have any idea how to get rid of the buz? I tried
putting a capacitor across it and an inductor in series, do I need a
larger inductor?
Either run AC fans or use a different
.
I also recently purchased a RC-210 in kit form. I had absolutely no
trouble following the instructions in building it. It worked the first
time I powered it after completion. A great true 3 port controller for
the money.
My comments are unsolicited, and I am a satisfied customer.
Kevin
Hi,
[EMAIL PROTECTED] wrote:
Hi all
I've been watching the threads on audio reproduction. I would
like to go back to the orginal question that started all this, what is
the best way to improve the audio being reproduced in a Micor
repeater?
My repeater system is somewhat
mch wrote:
That I know of, not one 2M repeater using those have survived
without such static problems. The ones that have, I think, have flexed
to the point where the upper sections of antenna have broken off from
the lower sections.
I have a few Sinclair SRL-229's in service. They are made
atter. I'm
sorry if you own into our way of thinking, but this was the best way of
getting around a bad situation for folks that aren't as radio savvy and
you and I (many of our customers), that I could come up with.
Kevin Custer
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are overloaded.
Kevin Custer
List Owner.
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http
Henry Wingate wrote:
After many years, the final on our UHF Micor repeater (not a converted
mobile) has burned up.
Naturally I dont have a manual. The amp is a TLE1713 and the toasted
board is a TLE8333A.
Can a PA from a mobile be used, or is this only used on the station ?
The modules
/222menu.html
The main index of Micor Conversion Information can be found here:
http://www.repeater-builder.com/rbtip/micor-index.html
Comments or questions welcome.
Kevin Custer W3KKC
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tony dinkel wrote:
Having trouble retuning a 633 8A duplexer from 10 mHz to 5 mHz split.
Insertion loss seems to be excessive. Does anybody have any experience with
this model in this circumstance?
You are likely trying to tune it upside-down.
Try this:
Duplexer to Radio Set cabling lengths can be optimized by the method
from this article and downloaded PDF file from Wacom:
http://www.repeater-builder.com/rbtip/gtm.html
Kevin Custer
Oh, and by the way.. Lets stop the name calling and other such BS, or
you'll find yourself no longer receiving
Micheal Salem wrote:
Hi Kevin:
I get a 404 error when I tried to download the Wacom PDF document.
Is it just me?
The link was broken. Please refresh:
http://www.repeater-builder.com/rbtip/gtm.html
Kevin
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kq2h wrote:
Does anyone know where I can find tuning instructions for a GE Mastr
II Low Band receiver noise blanker? I have looked in service manuals
and have found no information.
Sorry, can't help there, but
Has anyone used a noise blanking receiver as a repeater receiver on
6M or
Adam C. Feuer wrote:
Kevin All,
I have a Micor SpectraTac Audio
Squelch Card with a blown up M7716 IC. I have the older version chip as
a replacement, the M6709.
Will I see a difference in squelch
performance from the new chip to the old? It's the only replacement
hfdxcc wrote:
Hello
I would like either a Micor or GE Master II already converted to a
440 repeater. Please email me with what you have.
You can have which ever you like made to your specifications:
http://www.repeater-builder.com/rbtip/custombuilt.html
Kevin
Yahoo! Groups Links
*
What model or type are you looking for?
You said inexpensive, would an older Hamtronics unit suit or do you need
something like a Micor or Mastr II receiver?
Kevin
w9mwq wrote:
I am looking for a inexpensive 440 Mhz receiver with a COR output to
replace the one that is with my 440 repeater.
...
http://www.repeater-builder.com/rbtip/hatorder.html
Thanks for all of the support,
Kevin Custer W3KKC
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[EMAIL
http://www.tvcinc.com/
John Clark wrote:
Hey guys,
Where is a good place toget
connectors for CATVHardline?
I have 7/8" hardline and need two
connectors that terminate to type N.
The one damaged connector I have is
anAugat LRC A1 875 NFK 3
John Clark - KI4AWK
land mobile
manufacturing plant in Meadow Lands!).
145.49 ??
Kevin Custer
(Somerset, PA)
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Your use of Yahoo
There is a conductive epoxy that can be used re-attach the load. I'm
not sure where we get that stuff, but I'll have Zimmerman respond with
the information if he remembers.
Kevin
JOHN MACKEY wrote:
OK, I was modifying my UHF Micor Mobile Circulator to make it a repeater. The
75 watt ceramic
mch wrote:
Actually, I don't think .49 went on until the late 80s. I forget where
they were before that. Maybe it wasn't anywhere and 146.790 was the only
Washington (PA) repeater.
I forgot about the 7-9 machine. That was likely it...
Kevin
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Q wrote:
I sent Russ the scan of the pinouts but couldn't upload to the group files
section,help Kevin?
There may not be enough room left on the Yahoo server. Send the scan to
me and I'll upload it to RBTIP.
Kevin
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Russell Filling wrote:
okim trying to hook the rc 1k up to the old GE crate ..
Here is the manual in HTML text and a hook-up image, Go to :
http://www.repeater-builder.com/rbtip/techindex.html
Look under the section:
"Technical Manuals and Projects"
Micro
Computer Concepts
Kevin Custer wrote:
Look under the section:
"Technical Manuals and Projects"
Micro
Computer Concepts RC-1000 Manual
Micro
Computer Concepts RC-1000 Hookup Image
The links didn't copy correctly for those who get HTML:
Micro
Computer Concepts RC-1000 Manual Scan
kf4vgx wrote:
Any Ideas for an older repeater SQ tail would like to shorten it.
http://www.repeater-builder.com/rbtip/micorsquelch.html
http://www.repeater-builder.com/rbtip/reverseburst.html
Kevin
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Laryn Lohman wrote:
We have a UHF Micor with the unified chassis in operation here. Our
exciter is on all the time too. It will modulate any audio sent to
it just like the repeater is actually on the air, as long as you are
within a few feet of it so you can hear the signal. Seems like I
Eric Lemmon wrote:
Laryn,
Go to the head of the class! Yes, that is exactly what we are doing by
adding an impedance matcher. We are adding a tuning capability that was
not included by the manufacturer. Moreover, whenever you see the
adjective broadband describing a power amplifier, rest
/nhrcindex.html
Kevin Custer
W3KKC
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and 6 away above.
3.) Build or buy a real repeater.
No I'm not joking.
Kevin Custer
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Virden Clark Beckman wrote:
I think you should send it to Kevin so he can hit it with a hammer, when
he is done I will come over and melt some of it with a blowtorch while
he takes the pictures, I am sure someone will step in with a
hammerdrill. Maybe bring it to dayton and charge 1 buck a hit
:
http://www.repeater-builder.com/pdf/wp6xxtuninginstructions.pdf
Scroll down to page 4 and read the section on :
Cable length between transmitter and duplexer
This and many other antenna system articles are available from the
Antenna System Information Index on RBTIP.
Kevin Custer
PS: Donations
Radio Shack, You have questions?
We have blank stares
Huh?
Kevin
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don't have the
knowledge that I have written here, so as a good ham you might want to
help find your neighbors problem and offer to fix it. Your neighbor
will enjoy his channel 18, etc., and you can enjoy your 2 meters and
everybody will happy.
Kevin Custer
List Owner
(yes I'm also a Cable TV
Correction:
That should have read 1/2 wavelength.
Kevin
Bird has a table that can be utilized, but you just need to insure you add or
remove 1/4 wavelength of cable; considering the coaxial length of the sampler.
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in
serious repeater installations.
cheers Kevin, hope to see you at Dayton again (04)
And you as well
Kevin Custer
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/n1uec/deemphasis.html
Kevin Custer
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. This is
only the second miscue in several months since we started moderating new
members.
Please let it go and accept our apology as we try to run the best
repeater reflector. You don't see most of the crap that is attempted to
be posted, but realize we are only human too.
Kevin Custer
Multi-List
Maire Company wrote:
any one out there that could and would convert a Mitrek for me? UHF.
100 watt right now it has a muti tone pl board in it.
UHF ham or GMRS. thanks John [EMAIL PROTECTED]
http://www.repeater-builder.com/rbtip/micorconversionindex.html
Yahoo! Groups Links
Stephane Montpetit wrote:
Anybody knows about a PC based
repeater controller software other than Echostation, either DOS or
Linux based OS?
Yup...
http://www.repeater-builder.com/pc/
Kevin Custer
Yahoo! Groups Links
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minutes
It could have been a whole lot worse
With over 1900 people subscribed to the list, we used up some
horsepower. Folks that are subscribed using the Digest Mode won't
receive them as they have been removed from the archive.
Thanks everyone, especially my moderation team.
Kevin
Terry Shellman wrote:
Hi Don. Call BD enterprises at 408 246 6231 and ask if his 1p controller
will fill the bill for you. At 69.00 It is affordable. 5.00 was the shipping
to my area. It morse id's and has 32 remote commands.
The NHRC-4 would also be a good choice:
it's free) and add your system,
(no mater how big or small, linked or standalone) to the active database.
Questions about the site can be directed to the developer KC9BIW from a
clickable link on the main page of the site.
http://www.repeaterlink.org/
Kevin Custer W3KKC
(I have no affiliation
The meter movement could be bad. I have had to replace mine a few times
as I'm pretty hard on it.
Henry Radio was selling new meter movements on eBay a while back, best
price I seen anywhere.
Kevin
rtoplus wrote:
Hi Fred
Yea...tried that...no happenings
[EMAIL PROTECTED] wrote:
The
Kevin Custer wrote:
The meter movement could be bad. I have had to replace mine a few times
as I'm pretty hard on it.
Henry Radio was selling new meter movements on eBay a while back, best
price I seen anywhere.
Here are a few links:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItemitem
kg4ogn wrote:
Hello,
Can anyone tell me where I can find information on tuning a UHF GE
Custom MVP
Yup.
Look on this page:
http://www.repeater-builder.com/rbtip/geindex.html
Kevin
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Eric Lemmon wrote:
I have used several Wacom duplexers over the years, and I think they are
excellent products. I recently tuned a WP-639 duplexer in a 2m portable
repeater, and followed the tuning steps exactly per the instructions to
achieve a high performance system. The Rexolite rods were
Neal Newman wrote:
Interesting.
I have a set of 639 cans on my repeater on 446.175 with No problems at all.
have no problem with the length of the tuning rods. No desense. and last time
I checked about 50 watts out..
Yes it is interesting.
How did you manage to tune up a set of 2 meter
[EMAIL PROTECTED] wrote:
Perhaps someone has the tuning instructions for the WP-642 handy? I haven't
had success in finding it, but I admit that my search hasn't been thorough
nor up-to-date while I've been busy the past several months. It was
purchased in like-new condition, and while I
Kevin Custer wrote:
Kevin Custer wrote:
[EMAIL PROTECTED] wrote:
Perhaps someone has the tuning instructions for the WP-642 handy? I haven't
had success in finding it, but I admit that my search hasn't been thorough
nor up-to-date while I've been busy
and Receiver Sensitivity both play an important role in
How much power can I run through this 4, 5 inch cavity duplexer.
Hope this helps...
Kevin Custer
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to remember them all
Kevin Custer
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You mean when the GE engineers dissected the Micor to help build the
Mastr II?
And the chief designer of the M2 was hired away by RCA. A while later
a new RCA mobile came out (the name escapes me). The designer
admitted that it could have been named the Mastr-3 as it was a Mastr II
with all the
kg4ogn wrote:
Great Thanks!! Is the procedure the same for VHF and UHF radios? I
saw that the page had tune up for a VHF MVP is everything the same
for UHF?
No, but UHF tuning instructions reside on this article in specific:
http://www.repeater-builder.com/ge/mvp/no6bmvp.html
Kevin
george vagner wrote:
I have a set of wacom WP-739 cans and was wondering if anyone has any
experience with them for ham use, they have the external tuning stubs on the
side
and knobs on top. are they suitable for 600kc split on vhf or will i need
more isolation say at 50 watts from a mastr II.??
K1CWB wrote:
Hello Kevin,
Thanks for the info, do you think I'll have better luck with the
TPRD-1554's? Or should I just stay with split antennas on the tower
(which actually doesn't work all that bad)
The repeater is an MSR-2000 running 10 watts out of a 110w PA.
If you are running the MSR
it isn't funny..
Kevin Custer
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
George Vagner wrote:
I have a set of wacom WP-739 cans and was wondering if anyone has any
experience with them for ham use, they have the external tuning stubs on the
side
and knobs on top. are they suitable for 600kc split on vhf or will i need
more isolation say at 50
cwbunting wrote:
Does anyone have any audio processing secrets they would like to
share?? I have been experimenting with an EQ compressor/expander,
and got some amazing results. Just wondering if anyone else runs any
processing equipment on their systems...
Read this:
Hello Bob,
Kevin wrote:
of the Mastr II's I have, have required retuning during the same time
frame as above, (usually one a year for optimal performance) but they
too use variable caps for the tuning.
Kevin:
I agree with your comments regarding component quality its importance for
Hi Bob,
[EMAIL PROTECTED] wrote:
Coincidently, a friend of mine has an older UHF Mastr II RX (the one with
tunable coils in the LO chain) in service that somehow got out of tune
several months ago. My guess is that the tuning core wiggled out of place
over a 10 year period.
This might be
[EMAIL PROTECTED] wrote:
I've seen a lot of posts on this subject but no posting of an actual filter
schematic. Here's mine.
This is now an available article on Repeater Builder:
http://www.repeater-builder.com/pl-filter/
More to come as soon as I can find the copy of the schematic...
to tune from DC to light,
and while you can make them work very well, just don't expect them to
stay.
Oh, to answer the rest of your question, in my opinion, every part of
the Spectrum Radio is unstable, whether it be the receiver, exciter or PA.
Kevin Custer
Your use of Yahoo! Groups
JOHN M wrote:
Kevin - you are correct that the 162-174 receiver LO chain is the same as the
2 meter range, but changing out helical resonators is a lot of work.
Basically, you need a small torch to do it right. Then, getting the CORRECT
replacements or modifying the originals is not simple.
Never said I was the only one, however I haven't seen any of you or
Larry's information on the internet. Care to share?
JOHN MACKEY wrote:
Actually, there are several of us who know about 2 meter Micor helical
resonators. You, Larry, myself aren't the only ones.
Kevin Custer [EMAIL
Larry Johnson wrote:
To get the receivers to go to the low end of two meters, I did have to
change out the 5 coils in the front end casting for the 150.8-162 MHz
receivers. And if I remember correctly, I changed out 2 or 3 caps. I
kept several sets of coils when I was able to get them from
.
IMHO of course
Kevin Custer
List Owner
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