At 8/19/2008 15:47, you wrote:
>Wasn't GE's scheme to simply delay the carrier drop while
>the ctcss went away... no reverse burst.
My Mastr II encoder encodes reverse burst. For some reason MVP CG boards
respond to reverse burst but do not encode it, nor do they drop CTCSS
before dropping TX.
At 8/19/2008 13:05, you wrote:
>The problem is, if everybody uses the same tone, there is no immunity
>created.
>
>
>
>Remember too that CTCSS doesn t SOLVE anything& it just masks the symptoms.
Yes, but if the symptoms are minor (signals below the 12 dB SINAD point),
they may not be worth the
John,
I don't think a circulator will do much for desense, since its primary
purpose is to protect the PA from being damaged by an incorrect load
impedance. Of course, it will greatly reduce the chances of IM
interference.
The Motorola T-1504A duplexer is barely adequate for a 90-watt transmitte
On the VXR-7000, the RJ45 pins 1 and 2 are the collector and emitter
respectively of an optoisolator that changes state when the squelch is
broken and the correct pl/dpl is used. www.jammerdave.com/vertex.html
says to connect the pin 1 to the pl detect of the repeater controller
and pin 2 to g
I do have a pair of these, both N female on Andrew LDF7-50. They are used but
in serviceable condition.
Steve KB3FPN
- Original Message -
From: Ray Brown
To: Repeater-Builder@yahoogroups.com
Sent: Monday, August 18, 2008 12:44 AM
Subject: [Repeater-Builder] Connectors needed
Rich,
Please re-check that part number- the number 19D436272G1 applies to some
sheet-metal parts, and not to any power supply, according to my GE
microfiche file. Regardless of the part number, your symptoms are typical
of a power supply in which one of the rectifier diodes has opened. You can
c
If any of the clubs or hams that want a new in the box one month with 2 year
factory warranty. Email me off the list before tomorrow or I will sell it on
EBay. I had one person that was interested but there EC decided to go cheep
and mate two Maxtrac radios to make a repeater.
To all Kenwood U
Ok got a set of M-10 off eBay for the portable set. Now all I have to do is
get them programmed. They are rated at 25W but I don't want to risk burning
them out so can they be adjusted to low power? And what is low power for the
units? 15W? Been hunting eBay for a RICK and found some that might wor
Cort,
Some of the DB series uhf antennas had the flat straps that came from the
dipoles and went around the mast and bolted together with the strap from the
other side.
The antenna should also have the moulded connections to the dipoles, this is
the later version antennas.
Mike
- Origina
Hi Joe,
I am not aware that there is 2 separate software that is use on Desktrac, What
is the version of the software that program the front panel? So that I can
order it from Motorola, to my knowledge the only software that is needed to
program the Desktrac is RVN4080 version R03,04,00. When yo
Folks,
I have a strange beast. I have an antenna that appears to be of the
DB-420 "style" (UHF 8 dual-bay folded dipole array). It has a DB
Products tag that while very worn reads model number TDE6400A-B. This
looks like a Motorola number to me? There is one difference in
construction. Rat
Absolutely. Then again, that doesn't always happen.
I remember an incident with two repeaters about 80 miles apart that had
mixing products 600KHz apart. Both machines were clean. they just happened
to have outputs spaced 600 KHz. Everything was fine until both machines
were up at the same
Absolutely. However I don't necessarily think the point is moot, depending
on the severity and frequency of the problem. Your comment kind of begs the
question though. "if you're not using it to mask a problem, what's it there
for ?".
I understand how it can help out with cochannel interfer
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of DCFluX
Sent: Tuesday, August 19, 2008 4:13 PM
To: Repeater-Builder@yahoogroups.com
Subject: Re: [Repeater-Builder] De-Sense and Circulator Question
Are you using LMR series or Belden 9
Mike Besemer (WM4B) wrote:
> Exactly. If all the repeaters in the same area use the same tone, then any
> mixing products, etc. also carry that tone.
>
>
>
> Mike
>
> WM4B
Mixing products are a problem that would need to be fixed anyway. PL
doesn't get rid of it, it just masks it. So the
Mike Besemer (WM4B) wrote:
> The problem is, if everybody uses the same tone, there is no 'immunity'
> created.
>
Ummm-it's only a problem when two repeaters are on the same frequency...
I feel like such a **DOLT**!!! After thinking about this problem of mine, I
decided to try something...
I do not own a service monitor, so I have been doing my all of my tests "on
the air" with an HT. I read something somewhere about MICOR Community
Repeaters being configured without "conventiona
> if you run full time tone mode you can run open squelch
> (i.e. and blow raw carrier into the tone decoder) and
> maximize the system sensitivity.
... with an advisory caution to use a serious quality
ctcss/dcs decoder. Less than optimal designed circuits
might false on or off.
> This is be
I take the position that any mix or spurs need to be resolved since it will
continue to cause problems regardless of CTCSS.
Chuck
WB2EDV
- Original Message -
From: Mike Besemer (WM4B)
To: Repeater-Builder@yahoogroups.com
Sent: Tuesday, August 19, 2008 6:32 PM
Subject: RE:
John Barrett wrote:
> Is there anything out there a little more integrated that can handle the
> job, or other suggestions as to a solution ?? Prefered environment is
> Windows, with some hope that a "service app" that will run at boot can
> be found. 2 way solutions like Echolink and Asterisk
Exactly. If all the repeaters in the same area use the same tone, then any
mixing products, etc. also carry that tone.
Mike
WM4B
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of Chuck Kelsey
Sent: Tuesday, August 19, 2008 5:17 PM
To: Repeater-Builder@yahoogr
He is suggesting that a particular geographic area utilize the same tone, not
that everyone utilize the same tone. I believe that most frequency coordinators
do just this.
Chuck
WB2EDV
- Original Message -
From: Mike Besemer (WM4B)
To: Repeater-Builder@yahoogroups.com
Sent:
Everyone, today I tried contacting Motorola parts for a manual and/or
schematic for the Master Decoder module I have, Part #TLN5803A.
Needless to say, navigating Motorola's call-handling system was a real trip.
First I ended up with someone in "Cell Phones", then someone in
"Recreational Radio". I
Are you using LMR series or Belden 9913 for a feedline?
On Tue, Aug 19, 2008 at 1:08 PM, John Transue <[EMAIL PROTECTED]> wrote:
> Members of Repeater Builder have been very helpful in my effort to improve
> the operation of a 440 repeater. The de-sense problem is reduced now by the
> addition of
Members of Repeater Builder have been very helpful in my effort to
improve the operation of a 440 repeater. The de-sense problem is reduced
now by the addition of another cavity, a band pass cavity on the receive
leg. Now I am wondering whether a circulator would provide additional
isolation and fu
The problem is, if everybody uses the same tone, there is no 'immunity'
created.
Remember too that CTCSS doesn't SOLVE anything. it just masks the symptoms.
Mike
WM4B
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of wd8chl
Sent: Tuesday, August 19, 2008
At 09:36 AM 08/19/08, you wrote:
How could it be more sensitive with CTCSS? I'm not sure I
understand.
de N5ZTW
A CTCSS decoder looks for a precise tone frequency in a narrow band,
so it's fairly sensitive. A squelch circuit looks for noise (no
signal present) and loss of noise (signal presen
You are aware that these GE supplies are unregulated...
The voltage can vary from 15.5-16 unloaded and easily drop 2-3 volts
with a good load on it. At least not the common series pass
regulation. Things like power amps and lots of other devices don't
care. What are the *seismic* voltage variat
How could it be more sensitive with CTCSS? I'm not sure I
understand.
de N5ZTW
A CTCSS decoder looks for a precise tone frequency in a narrow band, so it's
fairly sensitive.?A squelch circuit?looks?for noise (no signal present) and
loss of?noise (signal present)?in a much broader band?above t
At 8/19/2008 07:41, you wrote:
>I'm thinking that if you really want to have one, and you can get away
>with it, OK. But sooner or later, an out-of-town signal will tie it up
>and cause grief to others on the frequency. *ALWAYS* have the means to
>put it in CTCSS access remotely. Not to mention the
Thanks Del for your input. It seems this gentleman has not understood
everything. As always you direct input is most appreciated. By the way.
That rigblaster plus I use has now exceeded many many contacts in ALL
modes. Still going strong. Numerous hams have dropped in my shack. They
try it and
How could it be more sensitive with CTCSS? I'm not sure I
understand.
de N5ZTW
- Original Message Follows -
From: "Jim Miller WB5OXQ in Waco" <[EMAIL PROTECTED]>
To:
Subject: Re: [Repeater-Builder] Kenwood squelch quality
Date: Mon, 18 Aug 2008 19:41:09 -0500
> I am curious why anyone in
Main filter caps, they like to dry out over time and also have a
tendency to explode.
On Tue, Aug 19, 2008 at 7:46 AM, wd8chl <[EMAIL PROTECTED]> wrote:
> enjoyacold807 wrote:
>> Your basic GE Mastr II rack mount pwr supply (ref PL19D436272G1 Rev
>> A) was part of club WA8UXP's 2m GE MastrII (base
Siegfried Jackstien wrote:
> hi folks
>
> just a question:
> end fed halfwave with radials???
> impedance 50 ohms???
>
> an endfed halfwave has a builtin stepuptransformer or something similar
> so impedance on the connector is probably 50ohm BUT ... no radials needed
> it is an end fed verti
I own and operate a Micor UHF machine 25 miles west of
Austin (Texas) with no CTCSS. It also has an IRLP node.
I have no issues at all. This includes mornings where we
have intense ducting. I intend to keep it off unless I see a
need. I too like the fact it is more "open" for general ham
use.
I say
enjoyacold807 wrote:
> Your basic GE Mastr II rack mount pwr supply (ref PL19D436272G1 Rev
> A) was part of club WA8UXP's 2m GE MastrII (base) repeater (146.985
> Mhz) until it started acting up (a few years ago). Basically, the no
> load voltage looked ok. But, once the 100w PA kicked in the
[EMAIL PROTECTED] wrote:
> Mike,
> Now wait just a minute. Cochran is not in the middle of nowhere because
> I live in the middle of nowhere. I like the two repeaters with carrier
> squelch. I have always thought of CTCSS as an inconvenience, but maybe
> in more populated areas it is becoming mu
I'm thinking that if you really want to have one, and you can get away
with it, OK. But sooner or later, an out-of-town signal will tie it up
and cause grief to others on the frequency. *ALWAYS* have the means to
put it in CTCSS access remotely. Not to mention the inevitable noise
burps that sh
Repeater BuilderThese supplies are Ferro resonant and use an AC capacitor to
resonate with a winding on the transformer. Check the capacitor first, it
should be a 5 or 7 uF AC model rated at 660 volts. They are easy to find as W.
W. Grainger carries them or an equivalent model. If the winding
The condition you describe could be caused by an open diode rectifier. If only
one diode is working the regulation would be very poor but the no-load voltage
output could look normal.
Take a close look at the two diodes and make sure both are operational.
73 - Jim W5ZIT
--- On Mon, 8/18/08,
One solution that is often overlooked is the Signal Link USB. This external
sound card has provisions for VOX keying of a radio (or repeater controller
input) with no other hardware required. No serial port or parallel port
interface is required (The Signal Link is interfaced and powered from
A few years back I had a problem with the GE power supply similiar to yours.
What I found out the fuse was the problem. Replaced the 30 amp fuse and haven't
had a problem since. Did you try replacing the fuse?
David
=
From: enjoyacold807 <[EMAIL PROTECTED]>
Date: 2008/08/1
hi folks
just a question:
end fed halfwave with radials???
impedance 50 ohms???
an endfed halfwave has a builtin stepuptransformer or something similar
so impedance on the connector is probably 50ohm BUT ... no radials needed
it is an end fed vertikal (dipole) IF it is a halfwave
best 73´s d
Have you looked at SvxLink?
This is not Windows, but Linux. The installation is not complicated, and
with SvxLink you only need a PC, no external hardware.
At our repeater we use two or three RX linked in via internet. On the
reciver sites the only needed hardware is the RX itself and a PC. The PC
If it is the factory supply it is the fero resonant one and usually it is the
capacitor that goes bad. I remember the old days of the Goodyear Fest at
Wingfoot Lake!! There was a time when it was the best fest in NE Ohio. Oh
well. Times have changed - even Wingfoot Lake is for sale now.
Your basic GE Mastr II rack mount pwr supply (ref PL19D436272G1 Rev
A) was part of club WA8UXP's 2m GE MastrII (base) repeater (146.985
Mhz) until it started acting up (a few years ago). Basically, the no
load voltage looked ok. But, once the 100w PA kicked in the voltage
swings made a sunami
HI Guys!
Wondering if anyone is familiar with the ICOM IC VR 8050 repeater.
I was able to get a copy of the manual and the specs states that it would cover
150-170MHz.
Would it re-tune between 144-145Mhz ?
How about the performance of the machine?
any help / info / or comment would b
I'm consulting with another ham on setting up a one way VoIP link for a split
site VHF repeater, RX and TX to be located about 2 miles apart.
I've got a tenative solution using and off the shelf streaming audio server and
client, with a custom app to poll the PC parallel port for any digial sign
Dave,
I am not sure what your intended use of the repeater is, but you have
gotten lots of good advice. If you are looking for something to use at
your or a buddy's house, you can get by with a lot less investment
than if it is going up on a mountain top somewhere.
As was mentioned UHF or 900 MHz
You do realize that there are 2 seperate pieces of software that is
required to program the Desktrac repeaters. One is for the front panel
and the other is for the radios. There us a small switch on the front
panel that chooses which programming mode you are in.
Just to be clear as to what you are
50 matches
Mail list logo
