I have some Tait digital base stations as well as the other older analog
only counterparts (800 series?) that I need to build programming cables
for. Does anyone up here have any of the diagrams or schematics for the
cables?
Thanks!
James Delancy
1) Don't exceed 200 feet above ground unless your tower is lit,
registered etc ... a DB-224E on top of a 180 foot tower will exceed 200
feet ...
2) Dipoles rule ... they are the best for weather and wind resistance
(and don't forget about lightning!). A dipole is likely to last a lot
longer
Sounds as if you are missing a duplexer. A duplexer is a passive device
that allows your repeater to transmit and receive on one antenna
simultaneously without degrading your receive performance while you
strong transmitter is on the air (aka - desense). Most Quantar
repeaters ship with a
You might get a better turn around on this question through the LMR
group here on Yahoo.
James
rahwayflynn wrote:
I'm working with a relatively new non-profit that needs analog-only coverage
over their 26 acre campus. Site is pancake flat, no hills.
Anyone have a finance spreadsheet with
That thing stinks of receiver splitter of some sorts. I had one in a
junk box years ago and never used it. I am also suspecting that it
may just be a pad box for use with the MICOR pre-amplifier so that one
can attenuate the gain on the pre-amp to a desired level.
James WJ1D
I just checked it in Firefox (3.6.3 beta). It is reported as an attack
page.
James WJ1D
http://www.repeater-builder.com/maxtrac/maxtrac-index.html
Just split the duplexer and you one half of it into your receive line.
Tune it up to pass your 434.xxx channel, then fight with the rejection
for your 442.675 channel. You should see 60+ dB of reject. (HINT - one
most of those duplexers (if I remember right), there is an adjustable
cap down
Does anyone know of a place relatively close to CT (or NYC metro area)
that does service monitor calibrations?
Thanks!
James
Marine is not part 90 (I think it is part 22??). It should NOT be affected.
James
afa5tp wrote:
Hello
Thought you folks would be the ones to ask.
Am I going to be forced to purchase new marine VHF radios, or is the Marine
Band going to stay @ 5 kHz dev.?
Tim Hardy
W7TRH / AFA0TP
I have to stick my nose into this one. Use balanced audio ESPECIALLY if
there is any other strong RF at or near your site. 140 feet is a good
AM broadcast antenna! Shield grounds for your cable should be at one
end (best bet is at the controller for everything!) It also might be
wise to
Then it is a federal matter and not that I am much good with this
legal stuff ... but no matter where you are, it is illegal to divulge
what you hear to a 3rd party ... that would include a re-broadcast via
IP or radio anyway?? So with that, aren't all the scanner sites illegal?
James
lose the RLC-MOT and program in an output based on receiver activity!
That would be easiest. Other than that, is there a SAM board in the
station? The Quantar does not really have discriminator audio available
as it is a digitally processed platform and it just re-creates it for
you. The
Chuck, I have a set of DB products VHF cans for close split (4-cavity).
Are you interested? Northwest Connecticut.
James Delancy
Charles Mills wrote:
Hi all,
A previous deal to buy some duplexers fell through for various reasons
but the need still exists.
Need a set of 4 or 6 can VHF
If my memory serves me well on the audio/squelch board is going to
be a good place to get a discriminator tap if that is what you are
looking for. Poke around there with a hi-z audio sniffer/test set and
you will find it. I never did too much with them. Also, if you want
receive audio
I have some other Motorola gear such as the R1225 and such if you are
interested in those.
James Delancy WJ1D
NORM KNAPP wrote:
Hello guys.
I got a Motorola MTR2000 VHF 100Watt 150-174mhz split PA. I would like to
trade or swap the repeater for a KENWOOD TKR-750 or similar, depends
Sorry guys oops wrong reply path
James Delancy wrote:
I have some other Motorola gear such as the R1225 and such if you are
interested in those.
James Delancy WJ1D
NORM KNAPP wrote:
Hello guys.
I got a Motorola MTR2000 VHF 100Watt 150-174mhz split PA. I would
like to trade
If you find out before I do, I would love to know. I have not had the
time to mess around with my nuke, but I do have some Quantar control
boards that could be guinea pigged for the purpose. I would be most
concerned about the PA working with it as the Quantar control system
knows the little
Echolink has the capability to not transmit over active frequencies.
You can also shut off the announcements if you desire. If you use COR
instead of VOX with echolink, it works even better.
James
MCH wrote:
EL is just another control link method - in his case land line.
That said, EL
Receiver Squelch is just that ... a level at which the local receiver
un-squelches. The repeater squelch is the level the station uses to
determine (for its own internal controller) when it is actually going to
pass a signal through for repeat. I would recommend that you just set
both at the
is considered, I am looking for Motorola Quantar VHF Range 1
parts or XTS2500 VHF or UHF range 1.
Please reply direct ...
James Delancy WJ1D
Don't know if I would put them that low! They are (if I remember right)
a spin-off from TX/RX (just look at their duplexers/combiners etc.).
James
Ken Arck wrote:
Just a note..
Last I heard, Comprod stuff is actually Cushcraft stuff
Ken
What is your price?
James
transistor747 wrote:
I have a pile of 900 mHz Motorola GTX mobiles units.. mostly the 15 watt
model. There is also a few 900 mHz Maxtracs in the pile.. total about 30
radios. In addition, I have an excellent (NEW) repeater antenna for 902-928..
possibly 18 foot
Does anyone know anything about this http://www.eQSL.cc web page that
tells me I have several hundred eQSL cards waiting for me? I am in the
least bit active on HF and don't suspect that any of the locals I talk
to on the repeaters regularly are sending me QSL's Is this some
sort of
for $750 firm for this unit. Located in Northwest
CT. This was a purchase by me that is no longer needed due to system
plans change.
James Delancy
and may come in for service at a local shop
as it is PASSWORD PROTECTED on power up and any RSS/CPS read/write.
This is capable of:
P25 Astro/conventional
Q52/Q53 Front Panel Programming Federal
ADP Encryption
Thanks to all for any help in advance. PLEASE HELP SPREAD THE WORD!
James Delancy WJ1D
Anyone got the spec sheet on this unit?? I am trying to find the
original RFS sheet on this (which seems pretty near impossible since EMR
acquired the rights to it).
Also, does anyone have the actual RFS part number?
Thanks!
James WJ1D
in the MTR2000 folder
in this group's files section.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:repeater-buil...@yahoogroups.com] On Behalf Of James Delancy
Sent: Tuesday, April 21, 2009 5:16 PM
To: repeat...@yahoogroups.com; Repeater-Builder
While we are on the subject of Quantars Anybody do any linking of
P25/mixed mode operations back into an analog linked system? If so, how
did you control whether it would be analog or digital transmissions from
the Quantar (or other P25 capable box) when in received a transmission
from
I am hoping someone can help me avoid re-inventing the wheel.
I am looking for an antenna rotator that can be controlled remotely by
computer. Additionally, I am looking for an FM broadcast receiver (with
HD preferrably) that can be controlled remotely as well.
Thanks!
James WJ1D
Has anyone ever tried taking one of these and installing a Quantar
control board/wireline board (instead of the front panel programmable
data control boards) and then telling the station that it is a 900 MHz
Quantro unit? If so, has it worked? I am thinking about doing this
since I have a
Does anybody know any actual differences between these two cables (other
than manufacturer, the obvious and the fact that the Belden actually
seems to have a solid copper center conductor whereas the LMR-400 seems
to be possibly steel core)?
Thanks!
Please don't flame me ... I know better
Probably the variable cap in the element (frequency trimmer) went bad on
you gotta love MICOR :)
twoway_tech wrote:
Hello, Hello
I have a Micor UHF repeater station on amateur. I have had it tuned and
tested perfect since last fall. I sent my elements to Bomar and had them
I seem to remember the bramco reeds as -sponder units. If you happen to
have a -sender, it usually works either way if I remember right.
James
Mark wrote:
I found a couple of BRAMCO reeds in my junque box today, and can't
remember if these are VibraSponder or VibraSender compatible reeds.
I am so glad that Ken let you know all about that one!! Asking about
RG58 is enough to start a flame war RG174 could lead to something
more! ;)
If I used any form of small cable like RG174, it would be it's double
shielded/teflon cousin (to which I forget its number) at about 5 watts
Even though it is not a requirement here in CT, I have a narrowband
(12.5 Kc) FM repeater on the air (that has been narrow for almost 3
years now). What I have noticed is that ham rigs can do narrowband and
DPL more and more (the first one I had that was capable of narrow band
was
The CDM and HT series Professional Radios have the band split
information hard encoded into the firmware within the radio. You would
need to hack that. I know it can be done, but cannot do it myself.
James
Bill Powell wrote:
Has anyone found a way to move the window on a CDM-1550?
I'd
Ok, now that I stripped all the darn yahoo HTML crap ... here is my
answer to the reply.
1) If you have old firmware .. buy an upgrade!
2) (the simple solution) - Check your programming on your channel
information screen. Make sure repeater activation and repeater hold in
are set to Carrier
Sounds like another reason why I don't care to support D-star :) P25
works so much better (in most cases). I also have a liking for
MotoTrbo, but like D-Star, it is kinda proprietary since no one else
makes radios for it oh well.
James
just my 2c
[EMAIL PROTECTED] wrote:
At
Just a quick question for the group. I have two repeater sites with
DB224-E antennas on them (ham/gov't split). One repeater site tends to
feed back upon itself often (duplexers, radios, cabling inside all ok
into dummy load, antenna SWR good). The other repeater site does this
.. What duplexers are you using?? Repeaters?
James Delancy wrote:
Just a quick question for the group. I have two repeater sites with
DB224-E antennas on them (ham/gov't split). One repeater site tends to
feed back upon itself often (duplexers, radios, cabling inside all ok
into dummy
the other night when that repeater locked up my linked system plus
another linked system I was connected too (and the Arcom controller was
mis-behaving too ... but thats a separate issue).
James
Jay Urish wrote:
Oh crap.. The rusty bolt problem..
Are the DB antennas pretty old?
James Delancy
Both sites use Andrews 1/2 heliax (also new when installed) and low
PIM connectors. RF is Motorola CDR repeater at one site and R1225 at
another site.
James
Ron Wright wrote:
James,
What type of feedline???
What type of rig for RF package???
73, ron, n9ee/r
From: James Delancy
Are you programming this out of band? If so, the RSS may not have set
points available. You can manipulate the power with the POT on the
board (I think it is BLUE colored with white dial) just before the PA.
Then you can fine tune the power in the PA with the all white
(translucent) pot in
From what I have been able to gather is that getting a CDM out of band
would have to be done by a firmware/software hack in the radio .. not
the CPS. If anyone is up to that, I would love to know.
James
MCH wrote:
That's my point. I don't want to use a radio made 15 years ago - I want
to
I am personally a big fan of Advanced Receiver Research (Burlington,
CT). I just ordered 3 different pre-amps from them and had them in a
few days.
James
[EMAIL PROTECTED] wrote:
I've used Chip Angle's band-pass filters and preamps with very good
results and he's always been willing to
VHF and UHF CDM series radios go with no mods at all. 136-174, and
403-470 MHz splits. XTS and XTL series go fine too if purchased in the
proper range, if I am not mistaken, the CM/CP series (commercial series)
will also go just fine. Some older stuff that goes would be the M1225
stuff,
I have had very good luck with my ADI unit that became a repeater
transmitter after I got tired of trying to keep the old maggiore stuff
on the air. I do believe that ADI is out of the US market though
James
_
to amplify on Skipp's
Sorry about my last post, was meant to go direct!
Anyone come up with any good ways to get a 150-174 Quantar down to 146
MHz?? Or does anyone have a low split exciter and receiver that they
would like to trade for a high split?
Thanks for any help!
James
Ok guys ... here is what I found.
It is not Motorola proprietary format, but rather it is ETSI (European
Technical Standards Institute) (standard number ETSI TS102 361-1). It is a
DQPSK scheme. This is a published standard, and I just might start pursuing
its use rather than D-star at this
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