joe
i have a mostar 406-430 if that'll do you any good works with mike (I'm pretty
sure) $50 + post (it'll ship priority)
mdm ted
Hi Ted,
I wasn't looking for a 406-430 radio, were you thinking of someone else?
Joe
Ted Bleiman K9MDM - MDM Radio wrote:
joe
i have a mostar 406-430 if that'll do you any good works with mike
(I'm pretty sure) $50 + post (it'll ship priority)
mdm ted
WA7JAW was asking.
Chuck
WB2EDV
- Original Message -
From: Joe k1ike_m...@snet.net
To: Repeater-Builder@yahoogroups.com
Sent: Monday, December 07, 2009 9:44 AM
Subject: Re: [Repeater-Builder] 406-420 MHz Radios
Hi Ted,
I wasn't looking for a 406-430 radio, were you thinking of
w7nikw7nik wrote:
Has anyone rewired the pin out on a Motorola DTMF mic model hmn3013a
to a maxtrac 300 . I do not see voltage out the mic jack , this might
be a problem . Any help would be great I can get different dtmf mic ,
but i don't know what model to get .
As far as I can tell, it
OH! well maybe he'll see this. happy holidays to all anyhow. mdm
strongfont color=#ffTed Bleiman Kfont
color=#ff9/fontMDM/font/strong
strongfont color=#ffMDMnbsp;
Radionbsp;nbsp;nbsp;nbsp;/font/strongstrongfont
color=#ffnbsp;nbsp;nbsp;nbsp;nbsp;nbsp;nbsp; If its in
I believe some of the newer mic's don't have the tone encoder in the mic
and have it in the radio, I have what I thought was a newer TT mic on my
GTX, but no tones. I believe the MSC2000 is one like that.
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On
Mike,
I thought that only the RM-35M-BB has a battery backup circuit built-in; I
have an RM-35M power supply in service, and it does not have a battery
charging circuit.
A very simple method of achieving no-break battery backup is to install a
Schottky power diode on the positive output terminal
Sorry. Yes, it's a -BB version.
-Mike
On Mon, Dec 7, 2009 at 9:31 AM, Eric Lemmon wb6...@verizon.net wrote:
Mike,
I thought that only the RM-35M-BB has a battery backup circuit built-in; I
have an RM-35M power supply in service, and it does not have a battery
charging circuit.
A very
Hi Martin,
perhaps the repeater keeper of GB3VI can be of assistance to you:
http://www.repeaters.pwp.blueyonder.co.uk/index_files/Page406.htm
http://www.repeaters.pwp.blueyonder.co.uk/index_files/Page406.htm73 de
Darren
G7LWT
2009/12/2 cruizzer77 atlant...@gmx.ch
I'm collecting info about
Thanks for all the post and for the web site and group.
It's been very helpful to me as I have been setting up my system.
My repeater system is a Kenwood TKR-750 K2, Telwave TPRD-1556 duplexer set (6
cavities), A Telwave Isolator on the PA. Running 1/2 Heilax to a Andrew DB224E
antenna. This a
You may be locking up with a repeater on the reverse pair during a band
opening.
Chuck
WB2EDV
- Original Message -
From: offtracks1 worldroa...@fastmail.fm
To: Repeater-Builder@yahoogroups.com
Sent: Monday, December 07, 2009 3:48 PM
Subject: [Repeater-Builder] Rolling Pipe Sound
Scott,
You are not alone in this!! I too have been fighting a problem almost
exactly like this - I've tried different PL tones on RX and TX and that
seemed to keep it from self-oscillating. Seems to happen more when the
weather is dry and I describe it as a growl sound. Happening on a
MSF5000
Wishing you all a pleasant Pearl Schwartz day...
Ted Bleiman K9MDMMDM Radio If its in stock...we;ve got it!
P O Box 31353 Chicago ,IL 60631-0353
773 631 5130
Thanks for the quick reply
The revers pair is a good point.
I am in a remote area and did the full coordination but still we have had some
odd ducting here as I am close to 9K mountains and I am at around 4K feet to
start with.
Tony I have not ran it without the tx pl. I have a few folks that
Scott,
I also would second the reverse repeater theory. Years ago (many) we
had a repeater in Western PA on 147.165 that would lock up with a
Michigan repeater on 147.765 (both rightfully coordinated) and produce
the pipe sound. In those days (1980s) everyone ran carrier squelch and
we had
No worries, the more info the better. Echoproducer is the Bees Knees if you are
running echolink. It is one very impressive and free program. Peter has put a
lot of work into it.
Scott
--- In Repeater-Builder@yahoogroups.com, Tony KT9AC kt...@... wrote:
Scott,
I also would second the
Hi Eric,
I have been trying to follow these posts on battery back power. Under this
arrangement you describe, will the supply not get hot with the Schottky
Diode in place if the battery is discharged very low?
I am researching the best way to hook the battery to my Astron which does
not have
Hi guys .I have a SD 174 maxon data radio and it seems to not be able filter
other transmitters near by .The receiver opens up with squark noise even
when programmed with ctcss .can anyone suggest whats possibly the problem is
and possible fixes.I have one on site and it seems to be working
Is the circuit in the -BB version a charger or is it simply just a switch?
Thanks,
Mike
On Mon, Dec 7, 2009 at 2:39 PM, Jim Cicirello ka2...@gmail.com wrote:
Hi Eric,
I have been trying to follow these posts on battery back power. Under this
arrangement you describe, will the supply
A very simple method of achieving no-break battery
backup is to install a Schottky power diode on the
positive output terminal of the power supply,
and connect both the battery positive terminal and
the radio power leads to the cathode lug of the diode.
What happens to the battery and
Scott,
A likely suspect is a carrier being emitted by a nearby computer or
microprocessor. A few years ago, I was setting up a GR1225 repeater on a
VHF channel, and I noticed that the receive indicator LED was lit steadily.
My spectrum analyzer revealed that there was a low-level but steady
I found my DOS disk program, but can't find my notes on how to use the
program. Anyone have this information? Also, it looks like someone
changed the default password of cat1000, does anyone know if it can be
reset?
I'm working on a repeater for a club and I'm trying to get it off my
bench,
Jim,
The Schottky diode approach works best with a switching supply that is
inherently current-limiting. Some linear supplies cannot start under load,
following a power outage. Although it may take a day or two to recharge an
AGM battery when it only sees the float voltage. Ideally, the AGM
Mike,
The -BB circuit is simply some diodes and a resistor to limit charging
current. The basic circuit is found here:
www.repeater-builder.com/astron/pix/astron-rm50a-bb.jpg
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
Let me put in my two cents worth. Feed the power Thru the NO contact of a
relay. Connect the coil of the relay on the downside and the relay will drop
out and kill the power to the radio and the coil before the battery is dead. A
reset switch across the contacts will start the system.
Joe,
Have you got a manual? If not, it's available on the CATAUTO website.
You need to do a Dipswitch 7 reset to reset the password. Per the manual:
Switch 7 This switch is used to initialize the CAT-1000B. Set this switch
to ON. Cycle the
power OFF and back ON. During power-up, the memory
The lack of a front end comes to mind. You basicly got there a hand held in
a pretty box with a DB-9. Try adding a bandpass filter, such as a bandpass
cavity, shorted coaxial stub or a interdigital bandpass filter.
On Mon, Dec 7, 2009 at 3:42 PM, kerinvale kerin...@pacific.net.au wrote:
Hi
The router is right at 147.580 to almost 147.595. The repeater input is
147.600. So I plan to take that offline. All that cables are double shielded
with no adapters ect. I do not have anything between the isolator and the
duplexer.
Where is a good dealer for a 5 or 8 band pass for the
Our TX and rx frequencies are 10 meg apart so a band pass filter may have
problems giving good signal on both or should I tune the filter in the
middle of the two frequencies
Thank You ,Ian Wells
Kerinvale Comaudio,
361 Camboon road, Biloela.4715
Ph 0749922449 Mb 0409159932
Hm 0749922574 Fx
Just catchingup on this... yes the infamous rolling pipe sound.
We had an issue with a link receiver that occassionaly would get hung-up in a
loop, low audio but the correct PL. We switched from PL to DCT on the links
and that solved the problem. We spent a year hunting for the source but
depends on the quality of the filter. I would try using the coax stub
routine with RG-58 as the coax, that should be fairly wide. But look at it
on a spectrum analyzer to be sure it will pass both signals.
If not try building a 3-5 pole interdigital BPF. Those can tune 10MHz wide
easy.
On Mon,
Certain linksys routers may be able to take different the firmware.
http://www.dd-wrt.com/site/index
Of particular note is the ability to change the clock speed.
Also it has been my experience that the router isn't really the source of
the interference. Try switching the SMPS wall wart to one
How would a circulator or isolator work .The transmitt signal from the data
radio could pass through to the antenna and the rx signal could be received
from the antenna and The signal you wish to remove from the data radio radio
on receive could be notched to the dummy load .
The data radio radio
Scott,
One source is Telewave. Here are the datasheets for the 5 and 8 bandpass
cavity filters:
www.telewave.com/pdf/TWDS-5021.pdf
www.telewave.com/pdf/TWDS-5031.pdf
With the 30% Amateur discount, the 5 cavity will cost you about $231 plus
shipping, and the 8 cavity is about $100 more. Other
bil.i...@yahoo.com wrote:
Let me put in my two cents worth. Feed the power Thru the NO contact
of a relay. Connect the coil of the relay on the downside and the
relay will drop out and kill the power to the radio and the coil
before the battery is dead. A reset switch across the contacts
In that case use a single notch cavity to remove the 473 frequency in
question.
Circulators can be used in conjunction with shorted stubs and cavities to
create super narrow notch filters, but this may be more than you need.
Can one side of a 6mc450s diplexer be used as I have a few of them laying
around .The first test I tried worked well with a 6mc450s with no
interference but the 174 lost a lot of its TX power through it .from 3 watt
it reduced it down to .5 watt .I can say I didn't have a 50 ohm terminator
on
The maxtrac radios placed a DC voltage on the mic hi wire. If you do not see
that voltage, the mic will not work.
Now there is a possibility that the maxtrac may switch that voltage on and off
along with the PTT (TX on and off) but I don't recall that being the case when
I had the maxtracs.
Eric
Thanks, I have had great service from Telwave. They were very helpful for
newbie.
Thanks for all the tips and ideas everyone. It took me on a yet one more of
many sniffing runs with my ht and about 10 feet of coax with about 2 of the
center exposed so I could really sniff close.
Well
The answers are found in the Motorola Touch-Code Encoder Palm Microphone
instruction manual 6881114E07, which is still available from Motorola Parts
for about $3. It covers fifteen different DTMF mikes, including the
HMN3013A used on the MaxTrac 800, and the HMN1037A used on the conventional
I don't think I've ever heard a rolling pipe sound over a repeater,
although, once I had some interesting feedback from an SSB transmitter with
FM receiver.
Is there a good clean recording available?
Kurt
Thanks Mike,
This is an older cat1000 and not the B model. I'm trying to short-cut
this repair to get it off my bench but it looks like I'm going to have
to dig into things. This is an older Spectrum Communications repeater
with the CAT1000 controller. The original builder is long gone and
dont know that number, but sounds like a mobile style 6 cavity notch
duplexer, try the other side if the insertion loss is too high going one
way, and the opposite side should have a 50 ohm load on it
On Mon, Dec 7, 2009 at 6:01 PM, Ian Wells kerin...@pacific.net.au wrote:
Can one side of a
Yep its a mobile style 6 pack notch .would it be best with a 50 ohm dummy
load or 50 ohm terminator.I thought about tuning it with notch of 473.200 on
the side we want to use (between the sd174 and antenna) and notch of 517.025
on the unused side (the side that goes to the dummy load)
Thank You
Good luck, Joe. I went through that drill a couple of years ago. I
managed to get it all straightened out and documented, but it was quite a
headache at the time.
73,
Mike
WM4B
_
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of
kerinvale wrote:
Hi guys .I have a SD 174 maxon data radio and it seems to not be able filter
other transmitters near by .The receiver opens up with squark noise even
when programmed with ctcss .can anyone suggest whats possibly the problem is
and possible fixes.I have one on site and it seems
Do you have two FM stations in your area that are separated by 600 kc.? That
will definitely do exactly what you describe. We had it on our repeater.
I caught in one of your posts that your transmitter needs to be on for the
problem to appear, so that's intermod causing your interference,
I am looking to buy a quantar in either vhf range...p-25 working condition.
Willing to spend up to $1900.00. I heard there were
some selling at $1800.00 but do not know where or who is selling.
Thanks
Bill in Atlanta
404 325-8992
jawjabillatl
at
bellsouth
dott
net
.
.
larynl2 wrote:
Do you have two FM stations in your area that are separated by 600
kc.? That will definitely do exactly what you describe. We had it
on our repeater.
Or AM. Or an AM station ON 600 kc also.
A 50 ohm terminator should suffice, you may want to tune the terminated side
to notch the TX frequency.
On Mon, Dec 7, 2009 at 7:28 PM, Ian Wells kerin...@pacific.net.au wrote:
Yep its a mobile style 6 pack notch .would it be best with a 50 ohm
dummy load or 50 ohm terminator.I thought
Ted,
Thanks for the offer. I am going to have to pass on the Mostar. I have been
trying to keep as much of the equipment between sites the same as possible. We
are pretty well familiar with the Micor and Mitrek series of radios and I think
we want to stick with those if at all possible.
I may
Nasssty. Evil IM. Nice find.
Nate WY0X
On Dec 7, 2009, at 8:49 PM, larynl2 wrote:
Do you have two FM stations in your area that are separated by 600 kc.? That
will definitely do exactly what you describe. We had it on our repeater.
I caught in one of your posts that your transmitter
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