Matthew,
Can you direct me to some online discussions regarding this? I would like to
read more about it.
Tom
--- In Repeater-Builder@yahoogroups.com, Matthew Kaufman matt...@... wrote:
On 8/27/2010 8:18 PM, wb6dgn wrote:
If you reduce the modulation without reducing the receiver
PM, wb6dgn wrote:
If you reduce the modulation without reducing the receiver bandwidth,
then, yes, the range will be reduced. You have reduced the signal without
also reducing the noise. However, if you reduce the modulation and, at
the same time, reduce the receiver bandwidth and audio
Hey, guys! I'm trying to rewire my workbench area and I can't keep my mind on
what I'm doing, thinking about this subject! Where were you guys when I had
nothing else to do??? Nuts! Back to the workbench.
Tom
--- In Repeater-Builder@yahoogroups.com, wb6dgn wb6...@... wrote:
Also, wouldn't
We were waiting for you to get busy with something else. :-P
Are you trying to tell me I was hogging the board? Sorry, I'll behave!
--- In Repeater-Builder@yahoogroups.com, MCH m...@... wrote:
We were waiting for you to get busy with something else. :-P
Joe M.
wb6dgn wrote:
Hey
that says notify me of updates.
That should do it.
Butch, KE7FEL/r
On Thu, Aug 26, 2010 at 10:56 PM, wb6dgn wb6...@... wrote:
Can someone please tell me how to stop the email notifications when a new
file is posted to the group? Every time a new file is posted in any of my
active yahoo
John,
Thanks for the reply. I did see that on the yahoo page but I thought it was
referring to updates on the yahoo website, not what users post. I'll try it
and see what happens. Thanks for the reply. Meanwhile, before I blunder off
and do something I'll be sorry for, if anyone has
@yahoogroups.com, wb6dgn wb6dgn@ wrote:
Can someone please tell me how to stop the email notifications when a new
file is posted to the group? Every time a new file is posted in any of my
active yahoo groups, not just this one, I get an email notification that
the file has been posted on all of my
(and btw there are professional LMR folks and consultants who work with this
stuff every day on this list, just because we are hams too does not mean that
we are not in the business as well)
I didn't read Bill's comment as impugning the capability of the people on the
site, rather, my
If you reduce the modulation without reducing the receiver bandwidth, then,
yes, the range will be reduced. You have reduced the signal without also
reducing the noise. However, if you reduce the modulation and, at the same
time, reduce the receiver bandwidth and audio recovery, by a like
As receiver bandwidth narrows, higher frequency stability is required.
Handhelds with ovenized reference oscillators are not very practical.
TCXOs are more than adequate to do the job. Typical frequency stability for a
+-5.0kC system is 5ppm. TCXOs of 0.5ppm are common and not terribly
-Builder@yahoogroups.com, wb6dgn wb6...@... wrote:
If you reduce the modulation without reducing the receiver bandwidth, then,
yes, the range will be reduced. You have reduced the signal without also
reducing the noise. However, if you reduce the modulation and, at the same
time, reduce
And I don't think that knowing a repeater's tail signal strength doesn't
change is an apples to apples comparison.
You're right, it's not. It's all about signal:noise and a squelch tail has no
signal!
--- In Repeater-Builder@yahoogroups.com, larynl2 lar...@... wrote:
This has always
, not 2.5kHz.
On Fri, Aug 27, 2010 at 8:30 PM, wb6dgn wb6...@... wrote:
As receiver bandwidth narrows, higher frequency stability is required.
Handhelds with ovenized reference oscillators are not very practical.
TCXOs are more than adequate to do the job. Typical frequency stability
Might add, I think +-1kC would be doable but would be starting to get expensive
--- In Repeater-Builder@yahoogroups.com, wb6dgn wb6...@... wrote:
OK. But with that kind of micro modulation, you're going to be dealing
with problems more difficult to solve than frequency stability, though I
Can someone please tell me how to stop the email notifications when a new file
is posted to the group? Every time a new file is posted in any of my active
yahoo groups, not just this one, I get an email notification that the file has
been posted on all of my email accounts (three of them!).
We had our fill of those here, too. The hot side of the AC line (if you were
lucky, polarized plugs were rare in those days) was connected directly to a
35W4 or some such half wave rectifier tube and later to a selenium half wave
rectifier with the other side of the AC line being connected
I also built an electric only ford escort conversion to run around in. 144
volts dc
I'd like to learn a little bit more about this. Could I email you? My email
is my call at att.net if you wish to give me instruction on how to contact
you.
Tom WB6DGN
--- In Repeater-Builder
There is a process I use to easily see which stage is
bad. Reply if you need more help.
Maybe you'd consider posting it here? Always looking for better ways to do
things.
Tom DGN
--- In Repeater-Builder@yahoogroups.com, Kevin Custer kug...@... wrote:
radi...@... wrote:
Sucess!
I
I'm not sure about the MSR2000, I was in the portable shop already, but,
typically, Motorola uses multi-layer PC boards in most of their radios. Often,
one of those layers is mostly ground plane, a huge heat sink. It's not unusual
to require a higher wattage iron to flow solder on a
I'm told C4 is much more effective and you need less of it!
T.
--- In Repeater-Builder@yahoogroups.com, Gordon Cooper zl...@... wrote:
Maybe a little Black Powder might be needed?
Gordon ZL1KL
Tauranga N.Z.
What do they use? What alloy? Seems that radio was out too early for RoHS?
Tom DGN
--- In Repeater-Builder@yahoogroups.com, skipp025 skipp...@... wrote:
Eric Grabowski ejgrabowski@ wrote:
A recent thread discussed a problem disassembling a
MSR2000 continuous duty PA. That triggers
The fan will come on at 120 degrees F, right heatsink temperature if I remember
correctly so the supply will be a bit toasty before the fan comes on. There's
also a thermal cutout at 190 degrees that will shut down the supply. Astron
alludes to the high junction operating temperatures of
I cut my teeth on Link radios. In fact, I had a hard time adjusting to
Motorola. It always seemed that they took much more circuitry and, thus, many
more parts, to do the same job (not any better) as Link. My first Links on the
ham band were the old 1905/2240 two box pair on the 146.2/146.8
?
-- Original Message --
Received: Wed, 28 Jul 2010 03:43:52 PM PDT
From: wb6dgn wb6...@...
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: showing our age (old HT's)
I cut my teeth on Link radios. In fact, I had a hard time adjusting to
Motorola. It always
Make that '52 or '53. Gotta remember, the 5 is in the middle!
--- In Repeater-Builder@yahoogroups.com, wb6dgn wb6...@... wrote:
This is all before my time. When did Link stop making radios?
I may be off by a year or two but, best I can remember, it was about 1962 or
1963
Make that '52 or '53. Gotta remember, the 5 is in the middle!
--- In Repeater-Builder@yahoogroups.com, wb6dgn wb6...@... wrote:
This is all before my time. When did Link stop making radios?
I may be off by a year or two but, best I can remember, it was about 1962 or
1963
. Looking for information
on the feed back comming
from a MSF PA to the exciter.
Ralph
- Original Message -
From: wb6dgn wb6...@...
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, July 6, 2010 7:55:02 PM
Subject: [Repeater-Builder] Re: MSF-5000 information needed
information on the Control Head. I have several CXB's
without PA's.
I will be using a Micor PA with external circulator. Looking for
information on the feed back comming
from a MSF PA to the exciter.
Ralph
- Original Message -
From: wb6dgn wb6dgn@
To: Repeater-Builder
from a MSF PA to the exciter.
Ralph
- Original Message -
From: wb6dgn wb6dgn@
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, July 6, 2010 7:55:02 PM
Subject: [Repeater-Builder] Re: MSF-5000 information needed
The TPN1186 power supply
The TPN1186 power supply provides a high current (approx. 36A.), 13.8 volt
source and two lower current 13.8 volt sources, fused at 6.3 amps each. There
is also decoupling and filtering on a distribution board which also provides
overvoltage and overcurrent protection. Depending on your 12
Jim,
If you're still having trouble downloading the schematic, drop me an email. I
will reply with a pdf of the RS-50 print.
Tom DGN
--- In Repeater-Builder@yahoogroups.com, James ka2...@... wrote:
Hi Guys,
I am trying to download a schematic on this site for the RS50M Power Supply
and
Wish the shipping was affordable. I'd like one just as a souvenir. At the time
it came out, I thought it ran circles around anything else available and, as
Skipp and others noted, it's still an excellent receiver. Which band are your
radios on?
Tom DGN
--- In
Agree with those that said don't worry about it. I did replace one that was
canibalized for use in another power supply and the replacement was only $25.00
from Astron. Can't beat that.
Tom
--- In Repeater-Builder@yahoogroups.com, Ralph Mowery ku...@... wrote:
That is the way I see it
Does anybody have the specs. on this unit? I need to know the maximum output
current from this supply. Nameplate lists Voltage but not current. No help on
web. Thanks for the help.
Tom
Pretty much the same as in my area (NE Ohio). Limit of 35 feet, building
permit ($40.00) and sketch by owner/builder of proposed installation
(professional engineering data not required). Over 35 feet can be accommodated
by a request for variance. That starts to get a bit more costly,
Seems to me that someone once mentioned that you must use crimp connectors on
aircraft...???
not sure if that is true
I have mentioned that with regard to regular wire, not coaxial cable. The
logic behind that is that when a wire is tinned and the solder wicks up past
the
Being an old school guy, I have to admit a certain bias against General RT
holders and even the new codeless ham guys. I've seen many General RT holders
who couldn't tune a broadcast radio to a local station let alone work on a
genuine 2-way radio. So sue me.. I'm only human :-)
Yes! So
Being an old school guy, I have to admit a certain bias against General RT
holders and even the new codeless ham guys. I've seen many General RT holders
who couldn't tune a broadcast radio to a local station let alone work on a
genuine 2-way radio. So sue me.. I'm only human :-)
Yes! So have I;
Used to have to have it for land mobile but not any more. Still need it for
avionics and marine.
--- In Repeater-Builder@yahoogroups.com, WD7F - John in Tucson w...@...
wrote:
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
a commercial licenses check
it on the fcc site
On 3/30/2010 7:24 AM, wb6dgn wrote:
Used to have to have it for land mobile but not any more. Still need
it for avionics and marine.
--- In Repeater-Builder@yahoogroups.com
mailto:Repeater-Builder%40yahoogroups.com , WD7F - John
Mine is listed, too and mine shows a grant date of 1984. I actually got my
First Phone in about 1963. Looks like they only count from when the GROL was
issued, not from date of first license.
--- In Repeater-Builder@yahoogroups.com, Doug Rehman d...@... wrote:
My GROL is in the database,
Seems to me I also saw those pico fuses listed in one of the supplier
catalogs, probably Jameco or Mouser as those are the ones I check most often.
I wouldn't be surprised if they have the connector as well. My counter (HP)
and service monitors all use them (HP and IFR and Motorola, too) so
Here's one source for the fuses.
http://www.jameco.com/Jameco/Products/ProdDS/1710602.pdf They're available
from 1/16A. through 5A. Listed as very fast acting.
--- In Repeater-Builder@yahoogroups.com, Dave wb2...@... wrote:
Any ideas where I can buy RF fuses, either the actual fuse
Here's another source
http://www.mouser.com/Search/Refine.aspx?Keyword=Pico+Fuse Can't seem to find
the connectors, though
--- In Repeater-Builder@yahoogroups.com, wb6dgn tallins...@... wrote:
Here's one source for the fuses.
http://www.jameco.com/Jameco/Products/ProdDS/1710602.pdf
Agreed to all above BUT what's different from the REST of OHIO? Worst drivers
and highest insurance rates I've ever encountered anywhere. That says it all!
--- In Repeater-Builder@yahoogroups.com, skipp025 skipp...@... wrote:
You probably have to be somewhat or a local to get some of
that place (except the snow)!
73,
Mike
WM4B
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of wb6dgn
Sent: Sunday, March 21, 2010 4:29 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Welcome to Dayton (Partial
...@yahoogroups.com] On Behalf Of wb6dgn
Sent: Sunday, March 21, 2010 5:03 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Welcome to Dayton (Partial Hamvention
Primer)
C'mon Tom. you've gotta be kiddin'! Somebody with a `6' call complaining
about Ohio
In general, I would expect the time to vary more as a result of the CTCSS
frequency as opposed to the radio model (ie. CTCSS circuitry). The time
constant of the filter circuit would be longer with the lower frequency tones
and shorten as the frequency increased. I guess the DC switch design
Except for one thing-the x20 series radios weren't type
accepted for narrowband, and the FCC has already said that
if that's the case, it won't fly.
The last time around, when a manufacturer wished to provide a narrow banding
kit for a previously type accepted radio, they applied to the FCC
I don't/won't own any of the newer radios, especially riceboxes. I've got LB
and 150 Motran radios and am looking for a reasonably priced UHF as well as
some spares for parts. Since I no longer have anything to do with eBay, if
anyone wants to sell any Motrac/Motran radios, working or not,
So what about the other question?.. using heliax in mobile installation
What frequency? What power? What type of antenna mount?, and antenna?
--- In Repeater-Builder@yahoogroups.com, hitekgearhead hitekgearh...@...
wrote:
Really?. is that the real purpose of reverse-polarity
with on the heliax in a mobile installation.
Kb0wlf
-Original Message-
From: Repeater-Builder@yahoogroups.com [mailto:Repeater-
buil...@yahoogroups.com] On Behalf Of wb6dgn
Sent: Thursday, March 04, 2010 5:37 AM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder
My father had a Link FM transmitter on VHF - used a pair of 2E26's in the
final
Never saw that transmitter. The ones that I had used a 2E26 to drive an 829B
final for VHF high. Only put out about 30 to 40 watts but it was an easy mod.
to a 5894. It would smoke then; easily put out 80 to
Oh yeah..? Got an Allen B. Dumont...
Back in the day I bought a bunch of those old DuMont radios at a government
auction. Didn't know anything about them but I figured, how bad could they
be? Well,I found out. I ordered one set of crystals, messed with the thing
for a while and finally
I just got some Bomar crystals (Not my choice) for the clubs UHF Micor
I just got some crystals from Bomar, my first crystal order in about 40 years.
Some were basic crystals for an Alert Monitor receiver and some were in channel
elements supplied and compensated by Bomar. Every
Side Note: I have an AutoCAD drawing of a home brew version if there is a
person handy with a welder
Unfortunately I'm not (too much goofing off in auto shop), but I sure intend to
find someone. Geeessshhh! $5.00 worth of material at a scrap metal shop and
$25.00 plus a case of beer (the
We're Radio Shack! You've got questions; we've got blank stares!
--- In Repeater-Builder@yahoogroups.com, gerald bishop orangetruc...@...
wrote:
Your coment on the deer in the headlight reminds me of my resent trip the
the local Rat Shack ! Asked if they had any light bulbs,panel
: wb6dgn tallins...@...
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Re: Source of Coil Slugs
I measured the existing coil slugs as follows;
The slugs for L802 through L809 measure 0.129 at the outside of the
threads.
The slugs for coils L301 and L302 measure 0.180
to Pad coils in Sensicon and Motrac rigs, in years gone by. I enjoy
Motrac Stuff...Still using a Motrac rpt.(100w tube PA).
Let me know off line if you require any caps..Merry Christmas!
Tim W7TRH / AFA0TP Wa.
- Original Message -
From: wb6dgn tallins
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of wb6dgn
Sent: Tuesday, December 15, 2009 8:46 PM
To: Repeater-Builder@yahoogroups.com
Subject: [Repeater-Builder] Source of Coil Slugs
I'm trying to modify a commercial boat anchor from 42 - 50 Mc. up to the 6
meter ham band. Not even
--- In Repeater-Builder@yahoogroups.com, wb6dgn tallins...@... wrote:
Sorry for the lack of detail. The radio is a 42 to 50 Mc. Motran with the
L series receiver (same as used in the Motrac). There are a total of 13
tuned circuits in the front end and multiplier but only 3 of them seem to
tune
I'm trying to modify a commercial boat anchor from 42 - 50 Mc. up to the 6
meter ham band. Not even one coil in the RF preselector and 1st
oscillator/multiplier chain will tune into the ham band, which is very unusual
for this radio. There are just too many tuned circuits to consider removing
But how far can you get on the less than 9 watts you will have left after
using a cable with that much loss?
Pretty darn far! In the old days, I used to mess with the old packset (pre
handheld) radios that were available at the time. I had one GE, pre
PortaMobil that was rated at 250
Mark,
I think I duplicated your references further down. Sorry, somehow I missed
your post. Too much skipping here and there instead of sticking to one thread.
Tom DGN
--- In Repeater-Builder@yahoogroups.com, Mark n9...@... wrote:
Steve,
Not sure I understand what it is you are
Of course, I can't speak for others, but I am glad that I was distracted from
the trivial by something truly important. It only took me a minute or two to
read it and in that minute or two, it did get my wandering thoughts back on
track. Radio may be fun but it can't improve my life in any
Do you have the programmer interface? The GX3000 was programmed by programming
a ROM segment resident on the 8749 (if I remember correctly) microprocessor.
You remove the uProc. (socketed) and plug it into either the standalone
programmer or an interface box connected to a PC with the
modulation, such as 5/5 or 15/5 or
15/15 (meaning deviation in / deviation out).
Joe M.
wb6dgn wrote:
duh-because when repeaters were first authorized for 2M, they were
only
allowed from 146 to 148. 144.5-145.5 didn't come into existence
until
the 80's.
Close, but not exactly. When
HOW THE H*** DOES ONE ADD THE ATTACHMENT TO THE POST. AS USUAL, THIS YAHOO
CRAP IS IMPOSSIBLE TO FIGURE OUT. THERE'S GOT TO BE A BETTER HOST THAN THIS
JOKE!
Tom A.
--- In Repeater-Builder@yahoogroups.com, wb6dgn tallins...@... wrote:
If I can figure out how to do it right, I have a scan
HUH???
--- In Repeater-Builder@yahoogroups.com, Kevin Custer kug...@... wrote:
Second Try...
Kevin Custer wrote:
wb6dgn wrote:
HOW THE H*** DOES ONE ADD THE ATTACHMENT TO THE POST. AS USUAL, THIS
YAHOO CRAP IS IMPOSSIBLE TO FIGURE OUT. THERE'S GOT TO BE A BETTER
HOST THAN
...@... wrote:
wb6dgn wrote:
HOW THE H*** DOES ONE ADD THE ATTACHMENT TO THE POST. AS USUAL, THIS YAHOO
CRAP IS IMPOSSIBLE TO FIGURE OUT. THERE'S GOT TO BE A BETTER HOST THAN
THIS JOKE!
Test Attachment:
Kevin
mind. I have
documentation to confirm what I'm saying but I have no idea how to navigate
this yahoo fiasco. If anyone cares enough, send me an email and I WILL forward
confirmation of what I am claiming.
TA
--- In Repeater-Builder@yahoogroups.com, wb6dgn tallins...@... wrote:
HUH
an
attachment. You can if you are sending it from an email client.
Chuck
WB2EDV
- Original Message -
From: wb6dgn tallins...@...
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, November 14, 2009 10:55 PM
Subject: [Repeater-Builder] Re: ACSSB
OK, I guess I'd better calm
duh-because when repeaters were first authorized for 2M, they were only
allowed from 146 to 148. 144.5-145.5 didn't come into existence until
the 80's.
Close, but not exactly. When repeaters first came to be used on the ham bands
in the late '50s/early '60s the 2m band from 144 to 148 Mc was
another interesting thing would be to see 2 meter repeaters go to 2 or 3 mhz
splits and employ some form of efficient modulation mode instead of the same
old 10 khz fm.
Actually, it's happening now. There's a very dedicated (and, apparently, very
wealthy) group of hams using the Public Safety
PGE has used UHF in their Gas Department since the late '50s/early '60s
simplex on 451.050Mc. when I lived there. The remote transmitter was on top of
Mt.San Bruno south of the city. I would think that their voice communications
are now trunked and, hopefully, at a better site but I wonder
Who's going to pay for it... you the customer
I don't imagine that it will take them very long to amortize that investment
considering the reduction in workforce...mainly meter readers, but office
personnel as well. I expect the data will go directly from reader/storage to
processing
Nothing says we're reputable and here to stay like a company e-mail
address at yahoo.com!
I think I'd find a more reliable way to evaluate a company than the email
address they use. Not everyone considers an email address all that important.
If it gets the job done, WHO CARES who the
Tom,
I, too, just downloaded this program and am on the LOW end of the learning
curve too. I do remember that the first automatic download that I tried,
downloaded an old version of the software, around v.7.6.5 or something like
that, and it didn't work very well. I then stumbled across an
Tim,
Apologies for the typo; I guess I'm just too used to typing my own name.
Tom DGN
--- In Repeater-Builder@yahoogroups.com, wb6dgn tallins...@... wrote:
Tom,
I, too, just downloaded this program and am on the LOW end of the learning
curve too. I do remember that the first automatic
That would be C407, the only 10uF cap. on the regulator board. As I recall,
it's in the output line of the 5 volt regulator. Look for my email.
Tom DGN
--- In Repeater-Builder@yahoogroups.com, ab6li johnever...@... wrote:
Hello to the group.
My 900 MSF 5K Lost a cap on the HSO voltage
Makes ya wonder, supposedly it is a magnetic field that does the deed but the
fact that there is an inductor and cap in each side there is resonance
someplace. Sounds like RF to me.
that's what I was thinking, it has to be RF.
Suggest you review the principles of a ferroresonant transformer
They paid for your losses and you (your club) accepted it??? I bet that gave
them a warm and fuzzy feeling toward hams! Good advice about keeping up with
what's happening, though.
--- In Repeater-Builder@yahoogroups.com, Jim Brown w5...@... wrote:
We put a repeater in the equipment room
The relevance being.???! Now, if there were that many people on
the ham radio sites (collectively) that treated each other with
kindness and respect this number might mean something to me
but, as it is...YAWN!!!
-- In Repeater-Builder@yahoogroups.com, Mike Morris WA6ILQ wa6...@...
Gee...until you got here, they were! ;^)
?
--- In Repeater-Builder@yahoogroups.com, Paul Plack pl...@... wrote:
Gee...until you got here, they were! ;^)
- Original Message -
From: wb6dgn
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, April 01, 2009 9:00 PM
Took a minute but I uust figured out what you're saying. OK, bye! You just
proved my point. Have a good life.
--- In Repeater-Builder@yahoogroups.com, Paul Plack pl...@... wrote:
Gee...until you got here, they were! ;^)
- Original Message -
From: wb6dgn
To: Repeater
wd0fyf@ wrote:
You described mine like you were looking at it.
- Original Message -
From: wb6dgn tallinson2@
To: Repeater-Builder@yahoogroups.com
Sent: Friday, March 27, 2009 9:16 PM
Subject: [Repeater-Builder] Re: Need information on a UHF repeater antenna
made by Motorola
Hi Gerald and the group,
I think I've got one of these antennas too.
It has a white fiberglass radome, just under 7 feet long and about an inch in
diameter at the base,
coupled to an aluminum bottom section about a foot long and 1-5/16 inch
diameter.
A protective sleeve of the aluminum
87 matches
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