Bravo Kevin...
- Original Message -
From: Kevin Custer [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Saturday, January 01, 2005 2:45 PM
Subject: Re: [Repeater-Builder] Bickering - Thompson, McElhaney
Barry Thompson wrote:
Joe, your more visiable than you
Can anyone tell me what the input impedance for the
accessory Mic input is on a CDM-750 UHF or how much drive it takes to get 3KHz
deviation?
I am trying to hook one up to use for an autopatch
and cannot get enough drive from the patch to be useful. I suspect an impedance
mismatch.
I
Hello Matt--
Sounds like you may be desensing yourselfWhat happens to the signal to
noise ratio of a received weak signal when you turn off your repeater
transmitter? The signal to noise of the output of your repeater receiver
should stay the same and if it does all is well as far as desense
Mitch,
RF Parts does list the M9625 on their Web site. Dunno how much $... Go
here:
http://www.rfparts.com/motocomm.html
73, Eric Lemmon WB6FLY
kd4htw2001 wrote:
--- In Repeater-Builder@yahoogroups.com, Eric Lemmon [EMAIL PROTECTED]
wrote: Ken,
The M1134 PA transistors, AKA 4884411L34,
i am chaseing information on keeping a smx4450
repeater cool .i have considered installing a bigger heatsink onto the back of
the tx radio but i also remember that someone sugested installing a
antenna tuner between the tx radio and the diplexer to reduce the swr so the tx
module runs
As far as the SP, I think that might be something just for them, mine has a
SP1 after the model number. I can't say for sure about a busy site, my
repeater was in town next to several VHF transmitters and one other UHF
transmitter, as well as a Railroad radio system, and about a 1000 feet from
a
Mine has SP1 stenciled on it. It shows a pass and notch frequency for
each side in the 456/451Mhz range, so I assumed it was a BP/BR
duplexer. The label calls it a Diplexer, but the inputs are marked ANT,
RX and TX.
Joe
At 01:22 PM 1/2/2005, you wrote:
The SP300 marking on my unit suggests
The repeater fairies just dropped off a Moto R100, model Q2932A on
462.8624/468.8625 with a code of 051. It has options L168ANSP,
L658AASP, and L143AGSP. How hard is it to move this to 447.175? I
have the RSS from the Russian site and the notes from Batlabs; I will
build the programming cable
--- In Repeater-Builder@yahoogroups.com, Eric Lemmon [EMAIL PROTECTED]
wrote:
Rob,
The input impedance of either the front panel mike input, or the
external mike input on Pin 2 of the Accessory Connector, is 560
ohms.
Both inputs are factory-set at 14mV for 3kHz deviation, but the
Rob,
The input impedance of either the front panel mike input, or the
external mike input on Pin 2 of the Accessory Connector, is 560 ohms.
Both inputs are factory-set at 14mV for 3kHz deviation, but the gains
can be adjusted in CPS.
The above information was found in Paragraph 2.3.2 of the
--- In Repeater-Builder@yahoogroups.com, n1ist [EMAIL PROTECTED] wrote:
The repeater fairies just dropped off a Moto R100, model Q2932A on
462.8624/468.8625 with a code of 051. It has options L168ANSP,
L658AASP, and L143AGSP. How hard is it to move this to 447.175? I
have the RSS from
Kevin,
Yes, it is asymmetrical. Each of the three high-pass resonators has two
black plastic plugs near the connector end, while the low-pass
resonators each have one plastic plug. A Celwave engineer told me that
the 5085-1 is manufactured to order, and that the coupling loops are
Neil - you're the one with several ex-highway-patrol
cars in your history
The nearest I got to a public safety vehicle was the
ex-DEA dodge dart undercover chase car. It had
the ex-Arizona highway patrol UHF micor in it...
By the way, Ed's chevy suburban will turn one
million miles in
Christ!
My truck has over 300,000 miles on it. I can't imagine running a vehicle
to a million.
-- Original Message --
Received: Mon, 03 Jan 2005 12:00:21 AM CST
From: Mike Morris WA6ILQ [EMAIL PROTECTED]
SNIP
By the way, Ed's chevy suburban will turn one
million miles in another
Mike, they move quite easily, I tuned one down to449.275 and it still had good sensitivity. All I had to do is readjust the VCO voltages and retune the front end of the receiver. You will have to interface the controller through the 25 pin remote connector. (If it has one) I have a pagefrom
Can any one please ID what these emission types
are?
F1D,
A1D,
J1D,
R1D,
H1D,
G1D,
J3E,
H3E,
R3E,
G3E
Thanks
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I agree with Coy.
snip
That's the trouble with most of these post, and all of them using
transformers. You are still driving audio back into the other output
stage. That will sooner or later distroy the audio output PA !!!
I've replaced many expensive PA Moduls becaue
This
Might Help
Good
Luck Don KA9QJG/R 444.750 All Mot Micor
Bandwidth
This is the required bandwidth of the transmitter.The
above example represents "16.0kHz bandwidth".The decimal point is
replaced with "H", "K", "M", or "G".These
It's not desense that he has, it is loss of sensitivity. If he did the
sensitivity test as stated on the article Chris wrote, the transmitter is
not active.
http://www.repeater-builder.com/tech-info/effectivesens.html
I take the test one step more and transmit during the sensitivity test to
This sounds like a viable solution on the surface, however, it may be
more trouble than its worth. Care would have to be taken to get it to sound
decent. The speaker grill would have to be sealed properly. Also, be
careful if you use Maxtrac speakers for anything but Maxtracs. They were
My 1990 Chevy Suburban has 336,000+ miles on it now. I visited
the transmission shop a few weeks ago and had the tranny replaced
as the guy said it was probably a bit tired.
The engine is original having never been apart except for a timing
chain, front and rear seals and the
Hi Joe and Scott,
Thanks for your replies.
Yes, I did the test as described in the article and like you Joe, I did one
more step which was to key the transmitter and check for desense. The SINAD
reading on the meter didn't change when I keyed up.
Its a proper commercial antenna the repeater
Should be 600 ohms at pin 3 (ext mic). You can get around this by
turning up the mic gain in the programming software.
James
Rob Chris wrote:
Can anyone tell me what the input
impedance for the accessory Mic input is on a CDM-750 UHF or how much
drive it takes to get 3KHz
I have a friend that sent me the following e-mail:
Are there any Motorola fans out there that can tell me what could be done with
these? These rigs are inEXTREMELY good condition - Look New.( The
repeaters ( I haven't seen the HT's )). I don't know if they have PL, DPL, any
type of an ID
Memories...1959 Chrysler Saratoga Police special,426 Hemi,push button
automatic w/mechanical overdrive lever.Motorola tube radio on
37mhz,Speedo went to 160,certified. BIG gas tank...lousy mileage! Engine
still lives in buddys rail dragster...
Neil McKie wrote:
I had one ex-police car (1961
Jim B. wrote:
The original point was whether you HAVE to use the fourth column.
There was a point about using an NHRC controller on a 900 Mhz repeater,
as there is no ham gear for that band, and none of the commercial gear
has 16-button pads.
Jim Barbour
WD8CHL
Yes,I understand
I had one ex-police car (1961 Dodge Seneca) ... and an ex
California Highway Patrol car (1969 Dodge Polara, with the
440 Magnum engine in it; would pass anything but a gas station.)
I had fun with it too ... ;)
Neil - WA6KLA
Mike Morris WA6ILQ wrote:
Neil - you're the
--- Q [EMAIL PROTECTED] wrote:
Memories...1959 Chrysler Saratoga Police special,426
Hemi,push button
automatic w/mechanical overdrive lever.Motorola
tube radio on
37mhz,Speedo went to 160,certified. BIG gas
tank...lousy mileage! Engine
still lives in buddys rail dragster...
I
Barry Thompson wrote:
Thanks to Russ, I contacted the FCC WTB regarding
the usage of DCS/DPL or anything other than
common tone names like PL from the Motorola trade
mark and was confirmed that anything other than
PL was not authorized under part 95.181 sub
section G H.
In my local
Q wrote:
Mine uses all 16 digits,and I told it to do sowho still messes with
12 digit pads??? This is the 21st century after all
Mark Holman wrote:
I know a Repeater that uses the ABCD commands in theirs and one is speed
dial to A A A auto service ? I think they still do !
Yes, Mike - they work quite
well, if tuned up properly. Im
currently running one as a back-up unit for my 444.550 machine.
If you need the tune-up
pages from the manual, let me know.
Mark N9WYS
-Original
Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED]
Sent:
radius gr400 repeater
or a set of maxtracs with a rick box and a duplexer
but remember to check wide band or narrowband
Juno Gift Certificates
Give the gift of Internet access this holiday season.
http://www.juno.com/give
Dakota Summerhawk wrote:
Is the best way to have a mobile repeater up and running with two mobile
radios and a duplexer? Looking for a way to be able to run a couple of
repeaters, one VHF, one UHF for a mobile communications van. Can anyone
recommend ways to cut down on weight and space?
NØATH wrote:
I have a friend that sent me the following e-mail: Are there any
Motorola fans out there that can tell me what could be done with
these? These rigs are in EXTREMELY good condition - Look New.( The
repeaters ( I haven't seen the HT's )). I don't know if they have PL,
DPL, any
I don't recall seeing items listed for sale on this list.
Is that OK to do?
---Tim
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Your use of Yahoo!
Joe Montierth wrote:
--- Q [EMAIL PROTECTED] wrote:
Memories...1959 Chrysler Saratoga Police special,426
Hemi,push button
automatic w/mechanical overdrive lever.Motorola
tube radio on
37mhz,Speedo went to 160,certified. BIG gas
tank...lousy mileage! Engine
still lives in buddys rail
Jim and the group,
We have the TKR-850 ver. 2 running at 40 watts
in the Com van and feeding a DB 408 using TX/RX station duplexer works fine.
In the same rack is a TKR-750 (147) and a Maggiore R-1 (222) they all work
just fine and do not bother each outer at all.
Why would you have to run the
Mike, I think I've got that Bluesmobile rooftop speaker in my garage somewhere.
Art - KC7GF
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Your use of
I have the following test equipment for sale:
1-GE Personal Radio adapter 4EX12A12
1-Motorola microphone tester VGC
1-Heathkit IT-21 tube checker,nice
1-Mercury Model 204 tube tester,no charts
1-Sencore 60mhz Dual Trace oscilloscope
1-Cushman CE-5 service monitor
CONTACT ME DIRECT to
russ wrote:
Jim and the group,
We have the TKR-850 ver. 2 running at 40 watts
in the Com van and feeding a DB 408 using TX/RX station duplexer works fine.
In the same rack is a TKR-750 (147) and a Maggiore R-1 (222) they all work
just fine and do not bother each outer at all.
Why would you
Water has been used to spray on joints to see if the
noise goes away. You can also use WD-40 to spray the
joints, but that's up to the tower owner as it can
make a mess.
What kind of an antenna are you using? I use a
groundplane that has a folded driven element. This
keeps the antenna at DC
... snip ...
- - - - -
If only Bill Gates had a nickel for every time Windows crashed.
OH! Wait! he does!
Yahoo! Groups Links
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* To unsubscribe from
I am going to use two of the Decibel Products DB-4001-1 Filters on
the receive side of my repeater once I connect a preamp this week.
What I need to know is, is there a certain length the cable has to
be between the two cavities that connects them together as well as
between the preamp and
People have been wondering why I seem to 'collect' all those old
used Motorola and GE radios. I usually 'collect' them at swapmeets
when the sellers can't give them away (except to me.)
I finally unloaded almost all of the tube gear except one - even
donated a GE MT-16 to a friend
[EMAIL PROTECTED] wrote:
I don't recall seeing items listed for sale on this list.
Is that OK to do?
If you ask the list owner
Kevin
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Matt All,
If you have any ground connections going to the body just grab a
piece of sandpaper Disconnect your Batt leads on both sides on Ford
Dodges a battery terminal brush you will need to clean, also sugguestion get
those felt chem. treated Washers and place on the bottom,
1-GE MastrII 75 watt cont.duty UHF repeater on 443/449 rack mount with
Sinclair 4 cavity res-loc duplexer,GE UHS preamp and 4 wire audiocard,
working fine,in service now. No controller $700
1-GE MastrII 110 watt cont.duty VHF repeater on 146 in 4' cabinet with a GE
ferro-resonant 30 amp power
Well they don't bother each outer and there is room for all the duplexers.
So I guess there is no reason not to run them they way they are set up as
they are not broke.
Russ, W3CH
- Original Message -
From: Jim B. [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday,
About a year and a half ago I replaced the whole board on my VHF
MSR2000 110 watt NCD PA. (My PA had more problems than just the
transistors) I used the PA board out of a 110 watt mitrek mobile.
It took me an afternoon to do it as I recall. I had to remove the
power control circuitry and
Say Neil;
XYL would have a fit If I did that ! and I still have
whatever in the Attic
M. H.
- Original Message -
From: Neil McKie [EMAIL PROTECTED]
To: Repeater-Builder@yahoogroups.com
Sent: Monday, January 03, 2005 6:25 PM
Subject: Re: [Repeater-Builder] Re:
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