Also i am running the system up on 465.61244 RX and 470.79996 TX
and the Transmiter i am running is a Tait T856-24 with a T341 Tx Monitor
duplexor
T345 Receiver T343 Receiver Monitor + a text panel
Marcus
Gareth Bennett wrote:
Hi Marcus,
These come in all shapes and sizes, D band cavities
Marcus,
Do you realise that the Tait repeater that you have purchased has 50 KHz
channel spacing?
The T345 RX has a very different IF section compared to a 12.5 or 25 KHz model
T345 RX
You describe what probably was an ex Transpower radio link (Bearer) for
protection signalling. The
yes i do have black faced 300 series
i also have a T346-03 Transmitter which is the same colour as the T856-24
Gareth Bennett wrote:
Marcus,
Do you realise that the Tait repeater that you have purchased has 50
KHz channel spacing?
The T345 RX has a very different IF section compared to a
Yep thanx Frank, that's the article I was thinking about...
Laryn K8TVZ
A couple of weeks ago, our repeater system started to experience interference
from a paging system. The repeater is on 146.850 (-600 KHz), with the antenna
system about 120 feet up a water tower. The repeater itself is an Advanced
Communications System KRP-5000 running 35 watts through a set
There are at least two transmitters at two sites... not likely they're
all bad. But... the owner has assured me they're clean and I haven't
seen anything hokey on the spectrum analyzer from the repeater site.
Mike
WM4B
On Wed, Oct 28, 2009 at 2:46 PM, dmur...@verizon.net wrote:
Did you look a
Sounds like a bad case of mixing products (i.e. 2A-B) where A is frequency A
and B is frequency B. Several years ago, I helped cure a similar problem on
146.820 MHz. Turned out four transmitters were involved in that fracas and it
only took two to start the repeater howling.
152.480 is one
Good question about how the data was getting to both transmitter
sites. I've been meaning to ask that question and keep forgetting.
I'll report back.
Mike
WM4B
On Wed, Oct 28, 2009 at 3:16 PM, Matt Harker wrote:
Sounds like a bad case of mixing products (i.e. 2A-B) where A is
frequency
We had a similar problem here years ago, caused by a city fire dispatch
transmitter 30 miles away. It had a spur that we could follow around in
frequency too. Our repeater is on 2M and their transmitter was on 154.37, if I
remember. Their transmitter was the entire cause of the problem; no
Dirty paging TX. Seen that many times.
Joe M.
Mike wrote:
A couple of weeks ago, our repeater system started to experience interference
from a paging system. The repeater is on 146.850 (-600 KHz), with the
antenna system about 120 feet up a water tower. The repeater itself is an
Mixing products generally don't sweep through the spectrum, as usually
both TXs are stable and the mix would be as well.
Joe M.
Matt Harker wrote:
Sounds like a bad case of mixing products (i.e. 2A-B) where A is
frequency A and B is frequency B. Several years ago, I helped cure a
Ok Richard!
First very grateful for the return. But this link only has the scheme
electrical her and I need is the User manual or operations manual.
Again grateful
Gustavo - Pu3gbw
From: Richard Fletcher
Sent: Wednesday, October 28, 2009 1:23 AM
To: Repeater-Builder@yahoogroups.com
The TKR-820 Manual should be close enough.
http://www.repeater-builder.com/kenwood/pdfs/tkr-820-svc-man-large.pdf
On Wed, Oct 28, 2009 at 3:43 AM, Gustavo(Pu3gbw) pu3...@hotmail.com wrote:
Ok Richard!
First very grateful for the return. But this link only has the scheme
electrical her and
Thanks, got my BNC pigtails in good shape today.
bbfmrf wrote:
Is anyone interested in some one sided BNC pigtails?
I have a bunch, (50+) of RG58U BNC Pigtails that were removed from a
rack mounted test jig. They range from 12 inches to 18 inches.
I hate to just throw them away,
I would look at the exciter freq on the uhf paging transmitter.
It would help with some info on the paging transmitters. Model and such.
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of Mike
Sent: Wednesday, October 28,
For anyone that wants to do this I just finished hooking a non factory preamp
to the pins where the factory unit plugged in and it did work. I used a plug
from the junk box and kept the leads as short as possible with no connectors to
eliminate loss.
73 and thanks for all the replies
Mike,
If it moves around based on time of day, my first guess is a PA that's gone
bad, and has a parasitic that's temperature-related.
If you've tracked an individual spur drifting 70 kHz up the band during a
single transmission, this is not some (intentional) oscillator drifting, but
some
I am in need of the schematic for the TRN 9689 R1 Audio volume and squelch
board. Anyone that has a scanned or PDF file, I would appreciate a copy. I
have checked the RB web sight and not found it.
Thank You
Wayne, WA5LUY
Paul,
I'm with ya on your third paragraph. We've worked well together so far, but
we have very different techniques and motivations.
Right now, my motivation is to make is stop before I go crazy. I'm hearing
paging tones in my sleep!
I kinda think one of the sites took a
Ya'll know as much as I do about what the paging equipment is. I'm working
with limited knowledge. only what gets passed on to me from the owner.
I'll ask about that, as well as the exciter frequencies.
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com]
Replied direct.
- Original Message -
From: Wayne wa5...@cablelynx.com
To: Repeater-Builder@yahoogroups.com
Sent: Wednesday, October 28, 2009 5:26 PM
Subject: [Repeater-Builder] MSR2000 TRN9689 R1 Audio board schematic
needed..
I am in need of the schematic for the TRN 9689 R1
Mike, the interference is clearly not caused by your own rusty roof, and is
both eggregious and easily documented. I know we hate to go there unless it's a
last resort, but I'll bet the FCC is almost as tired of non-compliant pager
systems as we are. Perhaps that technique would prove
Strangely enough, I happen to be an O-O (as is the another club member, who
sponsors the 145.110 repeater. which is also being interfered with) and have
been in touch with our coordinator. He's been very helpful in urging us
along and providing us guidance (or reassurance) that we're going about
Hello Mike.
The first clue is that the signal is moving up and down the 2 meter
band. This would tell me that something not frequency controlled is
causing the interference. Not frequency controlled would mean that the
transmitter is not crystal or GPS locked to a specific frequency. Now,
I have to wonder how he can say his stuff is clean when this just
started a couple weeks ago. Did he perform a PM check within the last
two weeks? Unlikely.
Stuff can go south in a minute, and seldom just before you check it.
Joe M.
Paul Plack wrote:
Mike,
If it moves around based on
Wayne,
In compliance with copyright infringement laws, you won't find Motorola
manuals on this site while they are still in print. The detailed
information on the TRN9689 module is contained in the MSR2000 Control and
Applications manual 6881061E40, which is available for purchase from
Motorola
Locally, years ago, we had a military transmitter that had a
wandering spur. I am near Charleston, SC. The spur was strong enough
to key up amateur radio repeaters in the two meter band from
Wilmington, NC to Savannah, Ga.
The offender turned out to be a 250 Watt base station used to cover
: There is some software that allows finger printing of a transmission
: base on the lockup signature and oscillator stability as seen on the
: transmitted signal.
I am interested in such things! Anyone have any good suggestions or input
regarding software or systems?
Kurt
On Wed, 28 Oct 2009, Facility 406 DM09 wrote:
I am interested in such things! Anyone have any good suggestions or
input regarding software or systems?
Cavity - digital storage oscilliscope.
--
Kris Kirby, KE4AHR
Disinformation Analyst
I'd use a really fast spectrum analyzer, meaning an analog one and
point a video camera at it
On Wed, Oct 28, 2009 at 10:19 PM, Kris Kirby k...@catonic.us wrote:
On Wed, 28 Oct 2009, Facility 406 DM09 wrote:
I am interested in such things! Anyone have any good suggestions or
input regarding
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