[EMAIL PROTECTED] wrote:
I've had a 6.8 µF 35 V capacitor burn up on the GE VHF HB MVP.
I have also seen this on RCA TAC200 mobiles, and TPL, Vocom, ect
power amps.
Could be a resonat condition in the tantalum, maybe a low esr
electrolitic may be better.
Electrolitics are used in most PA
At 03:36 PM 01/20/08, you wrote:
Anyone know where I can find unsquelched audio in a Phoenix? Even
squelched but not through the volume control may work too...
Thanks,
Ben
Look here, and scroll down to the Phoenix section.
http://www.irlp.net/pnp-radio-pinouts.html
And look for Phoenix on the
Ditto on seeing this same failure on RCA TAC200 mobiles. I was surprised to
find that it did not seem to make any difference in the way the transmitter
worked. I never bothered to replace the cap and the RCA radio continued to
work just fine, no spurious that I could find.
73 - Jim W5ZIT
I would replace the .1 uf 150 pF at same time and try again.
Randy
--- In Repeater-Builder@yahoogroups.com, [EMAIL PROTECTED] wrote:
I've had a 6.8 µF 35 V capacitor burn up on the GE VHF HB MVP.
This is a
filter cap. for the final PA DC voltage, in parallel with 0.1 µF
150 pF
caps.
Right off the rear connector Read about ¾ of the way down this page.
http://www.ccdx.org/zedyx/mods/ab_mod.htm
Joel - WA1ZYX
WebMaster for the Cheshire County DX ARC, Located at:
http://www.ccdx.org
BLOCKED::http://www.ccdx.org See Ya, Joel
Mike Morris WA6ILQ wrote:
In the USA the 60-66MHz range is television channel 3, the 66-72MHz
range is TV channel 4, the 72-76MHz frequencies are used as
Operational Fixed / Repeater frequencies (essentially commercial
point-to-point links), 76-82MHz is TV channel 5 and 82-88MHz is TV
Ben wrote:
If you haven't tried to rx DTV yet it's time you did. I can watch
channels now in studio quality that in analog are almost unwatchable
by todays standards. HD signals are very nice too! It's easy to pick
these channels up with the antenna you have up now and the cost is
just
Is that published somewhere?
Joe M.
[EMAIL PROTECTED] wrote:
I have an HT1550 portable in the 450-512 split. There is a hack to let
it operate on 440 frequencies, and it works. Unfortunately, it
involves using field programming so that is the only model that will
work. Hope that helps.
Your sources are mis-informed. If your too close to the transmitter than likely
your fighting multipath which is more harmful to DTV than analog, but it
absolutly requires less signal to noise to get the DTV signal than analog. I
have expierenced many times first hand. Also reflected in the
I posted this to the MSF5000 groups a couple of time but no one seems
to know. Since some MSF gurus may be here but not there, I thought
I'd pose my issue here.
I have a UHF MSF500 (CXB) that programmed tuned to the ham band
just spiffy. Overall it's working great but I have a problem with PL
I know, I know Not First Class, but, has anyone ever used
the Ramsey 70cm preamp, the $15 one? I *have* put one of the 2m
versions of this preamp into service on a repeater remote receiver and
it works fine after 4 years in operation.
This one would be for a simplex packet radio,
They work fine. I have used them on many machines and installed them in many
client's repeaters. I usually place them in a shielded enclosure. Like you
said they aren't real good with RF overload, but they work great otherwise.
Scott
Scott Zimmerman
Amateur Radio Call N3XCC
612 Barnett Rd
This sort of behavior is far from normal for an MSF - thus it would
seem that you should look for a problem in your station such as off
frequency, skewed IF response, noisy RX VCO, etc.
If your tests have been conducted using a mobile or portable to
initiate the test transmissions, I suggest
At 01:14 PM 1/21/2008, you wrote:
This sort of behavior is far from normal for an MSF - thus it would
seem that you should look for a problem in your station such as off
frequency, skewed IF response, noisy RX VCO, etc.
Receiver performance is spec otherwise and the IF appears to be
BRAND NEW ANDREWS 7/8 ANDREWS LDF5-50A Transmission cable,
275' MOL (today's selling price is $ 4.85/ft. or $1,333.75 at
Tessco) on original Tessco spool with one (1) Type N female
installed. Additionally, there and four (4) NEW Andrews type N
connector's Andrews #L5TNF-PS (today's
Man where were you 2 weeks ago! I just took delivery of 200' from Talley
Good deal, someone will snatch it up
Ken
At 01:47 PM 1/21/2008, you wrote:
BRAND NEW ANDREWS 7/8 ANDREWS LDF5-50A Transmission
cable, 275' MOL (today's selling price is $ 4.85/ft. or $1,333.75
at Tessco)
Well... a couple of things here...
1) I apparently was misremembering my earlier tests (like that word?
heh). Indeed if I use my service monitor and switch on encoded
tone after carrier is well established, the decoder in the MSF
responds relatively quickly and apparently with the amount
At 01:32 PM 01/21/08, you wrote:
At 01:14 PM 1/21/2008, you wrote:
This sort of behavior is far from normal for an MSF - thus it would
seem that you should look for a problem in your station such as off
frequency, skewed IF response, noisy RX VCO, etc.
Receiver performance is spec
Thanks for the details on this topic.
Rich, you stated '430 MHz full duplex links'
What is the 430 Mhz equipment?
I was told by our local techs. half duplex is OK on links.
Their Vhf link system uses half duplex link equipment to a 442
repeater.
Is full duplex better? Why?
We have three Uhf
I talked to a friend who runs a couple of MSFs and asked him about
slow decode. He said to check the power supply busses around the
CPU (which does the PL decoding). The caps go bad with age and
any hum on the analog supplies or the CPU supply confuses the
CPU. One symptom of this is slow
Bob,
I'd check C15, the 470 pF mica capacitor that's on the same power supply
lead. It might be a good idea to replace both of the other caps that
parallel C16.
73, Eric Lemmon WB6FLY
-Original Message-
From: Repeater-Builder@yahoogroups.com
[mailto:[EMAIL PROTECTED] On Behalf Of
Does anyone know what happened to the maritime station WLO? Was it a
casualty of the Gulf storms?
Paul Yonge W2ARK
Mike Morris WA6ILQ wrote:
At 10:04 AM 01/17/08, you wrote:
Note that the built-in controller in the early Kenwoods (i.e.
the 720 models) is pretty brain-dead and does not meet
amateur requirements. Those that use those models just
set them up as duplex base stations and use an external
MCH wrote:
I'll take a few XTSs or XTLs for a couple hundred bucks each - or even
$600 each.
But that aside, why is a P25 radio the only one you should be able to
get to do 440-476?
Even so, P25 is a small percentage of Motorola's entire line.
Another point: If the radio has a
Keith, KB7M wrote:
If by down-and-dirty you mean simple, you can do a HAAT (Height Above
Average Terrain) calculation. This is about as easy as it gets (
http://www.fcc.gov/mb/audio/bickel/haat_calculator.html). This method is
easy, but only accurate if the terrain is mostly flat. It
swellesleys wrote:
We are looking for a Motorola Micor Vibraspondor TLN8381A 2Z 110.9 Hz
for use with our local repeater - K8VJ/R. Please email me if you have
one you would like to sell. TNX Steve N8AR
Just a friendly note-watch out if your repeater is on 2M. NE Ohio has
used 110.9 for 2M
TGundo 2003 wrote:
Your sources are mis-informed.
This isn't mis-information. This is personal experience. DTV requires
MORE antenna to work without breakup. Where a little snow is perfectly
tolerable, even a flinch of digital breakup once in a while can make it
unwatchable.
If your too
At 1/21/2008 17:49, you wrote:
Bob,
I'd check C15, the 470 pF mica capacitor that's on the same power supply
lead. It might be a good idea to replace both of the other caps that
parallel C16.
I tried replacing C16 with a 4.7 µF 35 V tantalum, which immediately
exploded upon applying power. I
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