I don't know if you have tried this or not, but do you have desense
with the duplexer into a dummy load? Or does it just show up when you
hook up an antenna?
Switch mode power supplies are famous for putting out noise on 600kHz,
such as found in battery chargers in boats and RVs. We recently had
Mark,
That is great news. You are to be complimented for not giving up on
the sometimes difficult Micor.
73,
Joe - WA7JAW
-- In Repeater-Builder@yahoogroups.com, n9wys [EMAIL PROTECTED] wrote:
The new Joliet East GMRS repeater is ON-THE-AIR!
462.5500 PL 156.7
Thanks to
Mike Besemer (WM4B) wrote:
I have a strange feeling that it’s arching around the fingerstock. The
inner tuning tubes showed definite signs of wear, but I THOUGHT the
fingerstock was making good contact. Is there any ‘approved’ conductive
lubricant for that area?
Your problem sounds a lot
Yes it is, George.
Mark - WQIV271/N9WYS (LAG 1970)
-Original Message-
From: Repeater-Builder@yahoogroups.com On Behalf Of George Henry
Is that affiliated with the LAG (Lakes Area GMRS) Group, Mark?
George, KA3HSW / WQGJ413
LAG 951
- Original Message -
From: n9wys [EMAIL
With the tee connector split and the TX side going into a dummy load, there
is no desense. If I reconnect the tee and go to the -8920, the desense is
back.
The tee's are MILSPEC connectors. same ones that have always been on there.
Unless something catastrophic happened, I don't THINK any of
--- In Repeater-Builder@yahoogroups.com, Eric Lemmon [EMAIL PROTECTED]
wrote:
Mike,
I urge you to avoid jumping to any conclusions, before you
determine the
cause of the problem. With all due respect, I think it is
premature to
condemn any component of your repeater until you have
No worries, Eric. I'm not giving up yet! I just want to be able to offer
the answer to the inevitable 'worst case scenario' question.
I definitely agree with you though. I'm a newbie to repeater stuff, but
I've been juggling electrons for a long time and know that sometimes you've
got to
Thanks Joe!
It certainly helps to have the correct parts! That Master Decoder card was
the Achilles Heel. Once I got the correct card, it worked like a charm!
wink
This is why I love the hobby so much... I have NO formal electronics
training - all of mine has been self-taught. Yet I was able
Not sure what you're asking, but if you're asking about
spurs, she's a clean as a whistle. VSWR is fine as well.
... as determined by what? Just because you can't see it
with your service monitor doesn't mean a problem isn't there.
Something different to try
Take a different
As the subject says, I'm in need of a 100.0 reed for a Micor receiver. I have
a 103.5 or 156.7 to swap if that helps you any. This is the slightly larger
reed than the transmit (and other equipment) uses.
Please email direct.
Thanks
Mike/W5JR
[EMAIL PROTECTED]
I have a RxTx Cavity Filter, Vari-Notch number: 15-14-01
Does anyone have any information on the capabilities of this?
I've already checked Kevins site: Repeater BuilderDuplexor Specs...
Skipp,
Please explain your first statement. if I can't see it on the spectrum
analyzer, then what is it?
No circulator/isolator in line during test. VSWR is indetectable between
the TX and the cans.
If I lower the power enough, the desense goes away. just as I'd expect.
It's a matter
Paul,
I've been thinking the same thing. I hate to tear them apart again, but I
want to clean the metal-to-metal surfaces again.
I can hear the fingerstock scraping against the inner tube... not a BAD
scraping... just what sounds like good metal-to-metal contact.
I was also thinking about
At 03:44 PM 10/06/08, you wrote:
Our club has recently acquired a TKR-750 and a TKR-850,
to replace an aging hodgepodge of repeater components. Both
the TKR's are co-located and share a Link RLC controller.
We want to use the excellent battery-backup provisions of
the TKR's,
WHAT
Our club has recently acquired a TKR-750 and a TKR-850,
to replace an aging hodgepodge of repeater components.
Both the TKR's are co-located and share a Link RLC controller.
We want to use the excellent battery-backup provisions of
the TKR's, with a Wal-Mart marine battery. We plan to
WHAT excellent battery backup provisions? It's a simple
changeover circuit, and the Kenwood internal trickle
charger is a joke.
Actually it works pretty well for what it is and claims to
be... a battery trickle charger.
with a Wal-Mart marine battery.
You'll be sorry. A marine
Please explain your first statement. if I can't see it
on the spectrum analyzer, then what is it?
Don't know until you nail down the exact cause, which a
service monitor might not always clearly indicate, regardless
of type and how you use it.
No circulator/isolator in line during test.
Good Evening Mike,
I'm afraid I agree with Eric,
The problems you are experiencing are not common, when you stated
you moved the crystals from the Mark 4 to the spare and are
experiencing the same result, was this with the same set of cans?
If it was then try two mobiles on the same set of
I've never worked with cans or repeaters, but I've witnessed similar issues
caused by oxidation/corrosion. Have you tried using a conductive grease on
the housing joints and the rods?
It appears silver-based grease is suggested for all applications above 50
mhz.
Good luck!
Jacob
I am trying to find a couple of VHF Mitreks for convertion to repeater
use and am having difficulty finding them locally.
I have checked a few websites with no success, and am looking for
suggestions on other websites that might offer these at surplus prices.
Any advice appreciated.
73 de
need information on a Racom model 1300 Morse Code Station Identifier
Building a backup repeater for the K9TRC/R which is down at this time.
Need:
Manual
Software ?
interface cable ?
What do I need to program this indentifier?
Garry WW9GT
I have been known to carefully clamp a cavity tuning rod into
my hand-held (9.6v) Makita drill chuck and fairly slow-run
the tuning plunger (rod) a few times through it's near entire
range (end-to-end).
Then retuning it to square one. In the case where I suspect
pitting on the internal
Mike,
I can hear the fingerstock scraping against the inner tube... not a BAD
scraping... just what sounds like good metal-to-metal contact.
That is normal. The reason I asked is mine had stopped making that
noise. It was almost completely silent when I rotated the knobs.
That was one of the
Garry W Tidler wrote:
need information on a Racom model 1300 Morse Code Station Identifier
Building a backup repeater for the K9TRC/R which is down at this time.
Need:
Manual
Software ?
interface cable ?
What do I need to program this indentifier?
Garry WW9GT
Well, here's the
While we are on the subject of the DB4060/62, I've got a couple of dead cans
with a bad tuning cap.
Does anyone have a source I can call to buy some of the Johanson 5602 tuning
caps? Some of the Johanson distributors don't stock it and require a big min
order. I've looked at Nebraska Surplus and
Yes Jim is correct.. 1300 needed a prom.. 1400 was dipswitch,
The 1400 had the fancy features, the 1300 was stripped down to basics
and offered to amateur as well as commercial.. as more of an entry level box...
the newer units have pc programming if I am not mistaken, but the
1300 and 1400
--- Thankyou..
.
.
..
In Repeater-Builder@yahoogroups.com, Captainlance [EMAIL PROTECTED]
wrote:
TXRX 15/14/01 is a 38 to 50 mhz single cavity, vari-notch style.
Lance N2HBA
- Original Message -
From: Randy
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, October 07,
---How many do you want? I have afew that I have'nt dismantled yet...
In Repeater-Builder@yahoogroups.com, Howard [EMAIL PROTECTED] wrote:
I am trying to find a couple of VHF Mitreks for convertion to repeater
use and am having difficulty finding them locally.
I have checked a few websites
---http://www.retrevo.com/s/Racom+1300?sub.x=42sub.y=15
.
In Repeater-Builder@yahoogroups.com, Garry W Tidler [EMAIL PROTECTED]
wrote:
need information on a Racom model 1300 Morse Code Station Identifier
Building a backup repeater for the K9TRC/R which is down at this time.
Need:
Manual
The problem occurs into both the antenna system and the -8920 with two
totally different repeaters. There is no external PA. I've already said
that the duplexers are bad. they're the only common component. This is all
basic troubleshooting!
Mike
WM4B
From:
Great minds think alike. Now that I know how to get the blasted knobs off
I'm going to try that.
I did swap RX and TX for that very reason and had pretty much the same
problem.
Mike
WM4B
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of skipp025
Sent:
Mike,
How are you measuring the desense?
How are you connecting the signal generator to the receiver?
What are you using for an indicator of sensitivity on the receiver, sinad,
quieting etc?
I am assuming that you are replacing the antenna line with a dummy load at
the output junction
Gary,
At this juncture, I'm not getting scientific about the actual desense
measurement, but I can tell you it's in the ten's of dBs. At this point,
I'm using Kevin's method. signal generator connected to the cans with the
cans connected to the repeater normally. I set the signal generator
Subject: Icom repeater
I have 2 demo Icom FR-4000-3 repeaters for sale
Will program to your GMRS channels, tones and call sign.
$800.00 each and shippingFL address add sales tax.
thank you,
John
(727) 441-3250
Many thanks for all the replies and the expertise that this list is known
for.
Maybe excellent wasn't the best choice of words to describe the Kenwood TKR
battery backup system, but here are some of the reasons why we like it:
The switchover circuit and the trickle charger are builit in,
Hi Mike,
I am a little confused as to how you are coupling the signal generator to
the receiver.
When you have the tx and rx connected to the duplexer normally and a dummy
load on the output T (that would normally feed the antenna line) how are you
coupling the signal generator to the
Something I would try, which I would not recommend to others
is to rotate the tuning plungers and maybe the cap(s) with the
unit under power making trouble. I have used this method to
find grunge makers, which turned out to be plunger pitting,
capacitor problems and hydroscopic sourced
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