Spec is either 500 Hz or 750 Hz (0.5 kHz or 0.75 kHz) depending on who
you 'talk to'.
Joe M.
Ron Wright wrote:
PL is usually aroung 800 Hz. 1 K little high, but should not cause a problem
unless the problem radio's PL circuits are being over driven.
I would get the problem radios on a
I guess I should clarify that. Talk to means depending on whose
manufacturer's specs you are looking at. Some are 500, and some are 750
for NBFM.
Joe M.
MCH wrote:
Spec is either 500 Hz or 750 Hz (0.5 kHz or 0.75 kHz) depending on who
you 'talk to'.
Joe M.
Ron Wright wrote:
PL is
Sorry, should of said we are not in the USA (or north America to speak of), in
the deep South Pacific
Kevin, ZL1KFM.
Get Skype and call me for free.
- Original Message -
From: Laryn Lohman
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, July 19, 2008 4:17 PM
Hi All,
I have a Optoelectronics Handi-Counter Model 2300. I brought it at Dayton in
1995. A great piece of equipment, and I use it alot. Still works fine, except I
pulled the NICADs out a few year back, not holding there charge, and never got
around to replacing them, works fine from 12v.
Kevin, Ramsey used to make an audio multiplier kit which would do what you
want.
I have one at home but am currently working away from home.
The other thing that will work is a Fluke 8060A DMM. That is what I useit
has a built in
audio freq. counter.
73 John VE3AMZ
- Original
No preamp.
Yes. the receiver was aligned per instructions (poor as they are.)
The receiver is the Kendecom MR-4 which is part of the standard Mark 4
Yes. the transmitter was aligned per instructions (which are actually pretty
good) and looks very clean on the spectrum analyzer.
Jim,
I agree. that's the first thing I'm going to check. I've got to go to the
site this morning to meet with the manager, get the key, and do some
preliminary work, but that coax is next on my list.
Unfortunately, the Kendocom design doesn't leave room for RG-215 internally.
The RX and
I have a digital multimeter that does a great job counting low frequencies. It
only goes up to 1 mHz, and has the counter function as one of the
capabilities. It also will tell me the value of unknown capacitors and
inductors, along with all the normal volt, ohm, current multimeter functions.
Get rid of the rg-8x and get some double shielded cable. Even a couple of feet
of single shielded cable can cause much desense.
Depending on the sensitivity and power level, a 4 cavity duplexer is just
barley enough for a 600 KHz spacing on 2 meters.
--- On Fri, 7/18/08, Mike Besemer
Thanks to all who responded so far. I spent a couple hours at the site
today doing prep work and as soon as I got home I spent a few minutes
working on the repeater. I found that there was JUST enough room for a UHF
to N adapter and an N elbow in back of the transmitter, which allowed me to
It'll be about 26 watts into the cans. Not sure what the receiver
sensitivity is at this point. Once I get everything as it should be, I'll
do a benchmark test for the repeater records so I'll have something to
compare against.
We've got a similar set of cans on our 6.85 machine and they do
NBC's Dateline to explore the perilous world of tower dogs on July 21
July 16, 2008 - NBC's Dateline Presents says it will take a
never-before-seen journey into the hazardous world of the tower
climbers who work on the frontlines of America's high-tech
communications system. The program, Tower
I made the desense measurements, and I can't believe the results. I get
about 12 to 14 dB of desense. Is that possible? The measurements are not
precise because the signal generator is not perfectly stable, but I
can't believe the measurement error is anywhere close to 12 dB.
We definitely
John,
For a normal radio, 12 dB would only be 2 S-units, so I'd believe what
you're measuring correlates to what you're hearing from the distant ham.
Mike
WM4B
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of John Transue
Sent: Saturday, July 19, 2008
looks like PC run amok..they had to get the obligatory 'woman
in a man's world' dig in there
I'll pass
- Original Message -
From: Mark Thompson
To: Repeater-Builder@yahoogroups.com ; [EMAIL PROTECTED] ; [EMAIL PROTECTED]
Sent: Saturday, July 19, 2008 10:34 AM
You didn't answer all the big questions. I saw in another
post the Tx value of 26 watts into the duplexer. List items 2,
3 4 are pretty big answer clues sources.
your turn,
s.
The reply...
Mike Besemer \(WM4B\) [EMAIL PROTECTED] wrote:
No preamp.
Yes. the receiver was aligned per
--- In Repeater-Builder@yahoogroups.com, Jim Brown [EMAIL PROTECTED] wrote:
Mike, that RG-8X is the first thing I would get rid of. It is
typically only %95 covered in shield braid, and that is a path for a
lot of leakage.
The rule of thumb in the whole repeater cabinet is double shielded
--- In Repeater-Builder@yahoogroups.com, Gmail - Kevin, Natalia,
Stacey Rochelle [EMAIL PROTECTED] wrote:
Sorry, should of said we are not in the USA (or north America to
speak of), in the deep South Pacific
Ummm... yes, I see! Maybe some of these shows would be easier to
catch if you invert
John Transue [EMAIL PROTECTED] wrote:
I made the desense measurements, and I can't believe the
results. I get about 12 to 14 dB of desense. Is that possible?
May not all be desense but what the overall effect you experience
is lumped in together in the same desense label.
I believe that
No room for Superflex in the repeater cabinet, and the RG-214 is MILSPEC,
which is silver shield.
Mike
WM4B
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Laryn Lohman
Sent: Saturday, July 19, 2008 12:23 PM
To: Repeater-Builder@yahoogroups.com
Subject:
I have seen at least one clearly demonstrated case where even
adjacent hard-line runs have had excessive mutual energy coupling.
Go figure...
As an optimist I hope for the best using the supplied cables.
As a skeptic I'm pleasantly surprised when the supplied cables
work as
Yep. Reality has a way of creeping in and kicking even the best engineer's
butt now and then!
Mike
WM4B
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of skipp025
Sent: Saturday, July 19, 2008 12:42 PM
To: Repeater-Builder@yahoogroups.com
Subject:
If adjacent hardlines have excessive mutual coupling, I'd look into decoupling
RF currect flowing on the outside of the shields.
- Original Message -
From: skipp025
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, July 19, 2008 10:41 AM
Subject: [Repeater-Builder] Re:
I need a R1 Audio card for a VHF MSR2000. If anyone has a spare please
let me know
Amen Paul,
However, the owner is a Government Agency, very slow to both
react and follow up with an adequate solution. When I was last
involved with the project everyone was still pointing fingers
at the other person. Rather than properly deal with the problem
they simply relocated some of
Kevin,
Might be good to record this and put on DVD so some like you could get to view.
I know there would copywrite issues, but think nothing would be said if offered
for free download. Just make sure you put the advertising in. However, as I
do, I fast forward thru these, but still some PR
Kevin,
On this same subject many of the doc type programs they give an ad for where
you can get a copy for money of course. In US you got the money you can get
anything, hi.
73, ron, n9ee/r
From: Gmail - Kevin, Natalia, Stacey Rochelle [EMAIL PROTECTED]
Date: 2008/07/18 Fri PM 09:08:53
At 06:44 PM 7/18/2008, you wrote:
Tom,
The TIA-recommended standard deviation for CTCSS is 500 Hz on a 16K0F3E or
20K0F3E emission. Most CTCSS decoders can reliably detect tone deviated as
low as 100 Hz. Any deviation greater than 500 Hz can be considered
excessive
I thought that GE recommended
At 09:41 AM 7/19/2008, you wrote:
I have seen at least one clearly demonstrated case where even
adjacent hard-line runs have had excessive mutual energy coupling.
Go figure...
Not surprising at all, if the antennas they were connected to were poorly
decoupled from the feedline shield, in which
Gmail - Kevin, Natalia, Stacey Rochelle wrote:
Just a shame some of us won't be able to see this interesting doco,
not in the cont USA. Unlikely our TV companies will show this any
time soon, maybe ever. Any change someone will record it and make it
available via a torrent? Heres hoping.
Eric Lemmon wrote:
Tom,
The TIA-recommended standard deviation for CTCSS is 500 Hz on a 16K0F3E or
20K0F3E emission. Most CTCSS decoders can reliably detect tone deviated as
low as 100 Hz. Any deviation greater than 500 Hz can be considered
excessive.
The TIA spec is for +/- 500Hz
[EMAIL PROTECTED] wrote:
At 09:41 AM 7/19/2008, you wrote:
I have seen at least one clearly demonstrated case where even
adjacent hard-line runs have had excessive mutual energy coupling.
Go figure...
Not surprising at all, if the antennas they were connected to were poorly
decoupled
Ick!
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of wd8chl
Sent: Saturday, July 19, 2008 2:52 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] Re: Duplexer Tuning / Desense
[EMAIL PROTECTED] mailto:no6b%40no6b.com wrote:
At 09:41
It says on NBC. If you don't have NBC programming you aint going to watch it
no matter what the announcement said, hi.
Most of the world does not have NBC just like most of US does not have the
Japanese networks for many reasons.
Also tomorrow is Sunday in the US where the program airs.
73,
Skipp,
We have new commercially made RG-400 cables on both the transmit and
receive side, and we have RG-214 from the tee to the Heliax transmission
line. The new cables could have a fault, of course.
I am going to take a break from this - going to the beach. I'll get back
to it after
--- In Repeater-Builder@yahoogroups.com, Gary Glaenzer
[EMAIL PROTECTED] wrote:
looks like PC run amok..they had to get the
obligatory 'woman in a man's world' dig in there...I'll pass
And what's wrong with a woman being a boss? I work for the major
transportation bus company
there's nothing wrong with it.I didn't say there was
what I find objectionable is that they can't just treat it matter-of-factly,
but have to get on a soapbox about it
and save your 'whining comments' for someone who is truly 'whining'
- Original Message -
From: Doug
I am wondering if a person could make an Iso Tee for a bird? I may have a
slug that could be used as a basis for one, as I picked up several damaged
slugs in an alley once. May have to possibly unbend one to get an okay
fit, don't want to have to force one into my baby.
Sometimes I wish
See http://www.repeater-builder.com/projects/bird43sampler.html
and from WA1MIK a writeup on what is inside a Bird element, as he fixed it...
http://www.repeater-builder.com/projects/bird-element-tour/bird-element-tour.html
Mike WA6ILQ
At 01:41 PM 07/19/08, you wrote:
I am wondering if a
Build a simple RF sampler for the Bird Model 43 Thruline Wattmeter
By Kevin K. Custer W3KKC
http://www.repeater-builder.com/projects/bird43sampler.html
- Original Message -
From: Wayne [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, July 19, 2008 4:41 PM
Not at all, there are a lot of lady climbers in the tower industry, not
anywhere as many as there are men though. From what I hear they work as
hard and are just as good as their man counterparts.
This should be a good program and I already have it set to record. The sad
thing is we have had
Mike,
If you need some I may have a short piece of good MIL RG-214 you can
have. I made a new harness for my duplexer and think I have a little
piece left over.
Collin
-Original Message-
From: Mike Besemer (WM4B) [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Sat, 19 Jul
To: Repeater-Builder@yahoogroups.com
From: [EMAIL PROTECTED]
Date: Sat, 19 Jul 2008 18:30:35 -0500
Subject: RE: [Repeater-Builder] NBC Dateline Explores World of Tower
Climbers, July 21 @ 10 pm EDT
Not at all, there are a lot of lady climbers in the tower
Collin,
I’ve got RG-214 coming out of my ears, but could REALLY use a piece of
RG-142B/U (or a similar RG-58-sized double or quad shielded 50 ohm coax). I
need about 18 inches or so.
BTW… I’ve got these duplexers licked. I think the system is ready!
Mike
From:
John,
Yes, it is possible! A case in point: I was bench-testing a brand-new
Motorola GR1225 desktop VHF repeater that came equipped with a factory-tuned
Celwave notch duplexer. The repeater was programmed to operate on one of
the VHF taxicab pairs that have a 5.26 MHz split. Although I
I was just thinking about what a terrific resource this forum is for repeater
building.
When I first started building repeaters in the late 1980's early 1990's, I
had to figure out everything myself or hope that someone in my handful of
technical oriented friends would know the answer.
For
The only fly in the ointment is moving the RX. We don’t know WHERE this noise
is coming from... so if he moves, he may move CLOSER to rather than further
away from the source...
I think a 904 notch on the RX may be a workable solution.
Thanks, Ron.
Mark - N9WYS
-Original Message-
It depemds on the size of the cavities. I have used 8 inch cans on both DB and
Wacom duplexers with excellent luck at 75 watts. The 7 inch cans in my
Sinclair duplexers also work well to the 40 watt level. These are all 4 cavity
duplexers.
73 - Jim W5ZIT
--- On Sat, 7/19/08, Ralph Mowery
Amen to that !!! 40 years ago would have been even better - (if there had been
an internet)
73 - Jim W5ZIT
--- On Sat, 7/19/08, JOHN MACKEY [EMAIL PROTECTED] wrote:
From: JOHN MACKEY [EMAIL PROTECTED]
Subject: [Repeater-Builder] just thinking
To: Repeater-Builder@yahoogroups.com
Date:
Next time you are at the site plug 150.6 into a handheld
and see if you hear it. That number is the result of 904 / 6
and it the transmitter is leaky enough you just might be able
to t-hunt it.
Or make up a 900mhz beam and plug it into a handheld scanner
that you wrap in foil that is
Naahhh
In TIA-603-C paragraph 1.3.5.3 is in the Definitions section not
in the Standards section.
1.3.5.3 refers to the Definition of the standard test modulation.
The correct section for the actual Standard is under:
Standards for All Equipment
3.4.17, Transmitter Subaudible Deviation
My statement about the definition of Standard CTCSS Modulation is correct,
and thank you for confirming that. As others have pointed out,
manufacturers are not necessarily bound to comply with TIA standards. I
guess the real issue is, why should any manufacturer set CTCSS deviation at
two to
This thread has gone on a completely unacceptable tangent.
Let's move on.
Scott - List Moderator and co-owner
Scott Zimmerman
Amateur Radio Call N3XCC
474 Barnett Rd
Boswell, PA 15531
- Original Message -
From: Gary Glaenzer
To: Repeater-Builder@yahoogroups.com
Sent:
My next question would be... were the original cables
RG-400 type?
s.
John Transue [EMAIL PROTECTED] wrote:
Skipp,
We have new commercially made RG-400 cables on both the
transmit and receive side, and we have RG-214 from the
tee to the Heliax transmission line. The new cables
could
This is not to minimize Repeater-Builder and other good sites that are
a tremendous resource of information that would be difficult, or
impossible, to obtain in times past; however having the answer to most
every obstacle takes some of the fun and challenge out of the process.
It's almost become
Tom,
I am not minimizing your experiences either. However, being visually
impaired this forum or mailing list has a lot of wonderful stuff and if I
didn't have it I do not think I would be putting a repeater up because I
wouldn't have understood enough about it the repeater to do so.
Tom,
Personally, I find more satisfaction and in building six repeaters than
struggling with one. I think I've learned more, too.
73,
Paul, AE4KR
- Original Message -
From: Tom
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, July 19, 2008 11:29 PM
Subject:
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