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5324(at)PRTC.NET
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 Posted: Wed Oct 25, 2006 6:32 am Post subject: HANDHELD COMM. PROBLEMS///// |
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HELO: LIST
I HAVE A ICOM A-5 ON MY FOX.. WITH FLIGHT TECH INTERCOM AND EXTERIOR
ANTENNA...
IN GROUND THERE NO PROBLEMS IN RE&TRA///
BUT IN FLIGHT/// EVERYBODY THAT COPY ME SAID THAT TOO MUCH INTERFERENSE
OCCURS////
DO ANY RECOMENDATIONS!!!!!!!
PEDRO
CLASSIC N212PR
PUERTO RICO
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Wed Oct 25, 2006 9:13 am Post subject: HANDHELD COMM. PROBLEMS///// |
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I have the A-24 and I did have the same problem..... It came form a problem
I had with my engine that actually shorted out the resistors in the spark
plugs. The CDI in the 582 does give off a pretty healthy spark and if the
resistor clips are worn or if the resistor plugs are not showing the correct
resistance ( I think 5 M Ohms) then you can count on TX noise on your
signal. Funny thing is the RX won't be nearly so bad.
These new super small X-cievers use the same boards to do several different
tasks in side the radio. Those boards are what is picking up the noise of
your engine and pumping it up the pipe.( antenna )
Hope this helps... The fix isn't hard, Good resistor caps on good resistor
plugs.
Noel
[quote] --
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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Guy Buchanan
Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA
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| Posted: Wed Oct 25, 2006 10:35 am Post subject: HANDHELD COMM. PROBLEMS///// |
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At 07:27 AM 10/26/2006, you wrote:
| Quote: | BUT IN FLIGHT/// EVERYBODY THAT COPY ME SAID THAT TOO MUCH INTERFERENSE
OCCURS////
DO ANY RECOMENDATIONS!!!!!!!
|
I did some research on this a while ago and found some information related
by a open cockpit builder. He said one way to increase the signal to noise
when transmitting was to turn the mic gain down and talk louder. I did that
with my A200 and it seemed to work. I doubt you can do that with a
hand-held. The only other recommendation would be to use a high quality
headset with it with a noise cancelling mic.
Guy Buchanan
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
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Guy Buchanan
Deceased K-IV 1200
A glider pilot too. |
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kitfox(at)ida.net
Guest
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| Posted: Thu Oct 26, 2006 6:14 pm Post subject: HANDHELD COMM. PROBLEMS///// |
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I am sorry, i missed the origional post. So am jumping in the middle. You
have to determine if it is elec. generated noise from the motor or noise
from the external. Try using the radio as a handheld only, no external any
thing and go from there. I use an A5 in my Fox and it works great. It is
powered from the 12 v system power and with an external antana. Is the noise
also from the mics or the radio.
Albert Smith
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