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Guy Buchanan
Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA
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 Posted: Mon Aug 25, 2008 7:10 am Post subject: what radio, intercom, headset combo are you using |
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At 08:02 PM 8/24/2008, you wrote:
| Quote: | I have tried both ways. It was actually better using the rubber
ducky than the external in terms of the tower hearing me.
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More good data. Check the connection between the external antenna and
your airframe. Make sure it's good, electrically. I had a problem
with suddenly really lousy transmission / reception and it turned out
to be degradation of the electrical connection between the antenna
body and the steel frame, thereby eliminating my ground plane. It
happened after washing the plane.
| Quote: | I have a feeling that the big part is the intercom not being a "high
noise" intercom. I looked up the SPA-400 that Guy has and saw the
400N for high noise. Looks like I may be ordering one of those.
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I don't have the high-noise unit and mine works well. Hopefully you
can get a report on the high-noise unit.
Guy Buchanan
San Diego, CA
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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Guy Buchanan
Joined: 16 Jul 2006
Posts: 1204
Location: Ramona, CA
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| Posted: Mon Aug 25, 2008 8:14 pm Post subject: what radio, intercom, headset combo are you using |
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At 10:36 AM 8/25/2008, you wrote:
| Quote: | hey Guy how about a little moderator help... Why are there now 5
threads with the same tittle? any chance you could combined
them. I started it logged into the forum and I think that when it
is replied to with an email it is starting separate threads. I
don't want to clutter up the forum, and I want to keep all replies
together as I think they may help out more people than just me!
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Thanks Leonard. I'll check it out and see what I can do to repair it.
Guy Buchanan, Kitfox List Moderator
San Diego, CA
K-IV 1200 / 582-C / Warp / 100% done, thanks mostly to Bob Ducar.
| | - The Matronics Kitfox-List Email Forum - | | | Use the List Feature Navigator to browse the many List utilities available such as the Email Subscriptions page, Archive Search & Download, 7-Day Browse, Chat, FAQ, Photoshare, and much more:
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_________________
Guy Buchanan
Deceased K-IV 1200
A glider pilot too. |
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Float Flyr
Joined: 19 Jul 2006
Posts: 2704
Location: Campbellton, Newfoundland
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| Posted: Tue Aug 26, 2008 6:13 am Post subject: what radio, intercom, headset combo are you using |
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The centre conductor of the coax which goes to the element should not be grounded, unless you want to blow your radio. The braid shield of the coax should be well grounded to provide the ground plane.
In your case the washing could have been the culprit not because it degraded a ground but because it caused a high resistance ground in the wrong place. You are right that cleaning the installation would fix the problem. Also make sure that no soapy water got into the end of the coax below the antenna. I have found that 90 % of avionics problems can be traced to bad or poor grounding... This is one of the exceptions that makes the rule.
[img]cid:image001.jpg(at)01C90770.DFCA04A0[/img]
Noel Loveys
Campbellton, NL, Canada
CDN AME intern, PP-Rec
C-FINB, Kitfox III-A
Aerocet 1100 floats
[url=noelloveys(at)yahoo.ca]noelloveys(at)yahoo.ca[/url]
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Noel Loveys
Kitfox III-A
Aerocet 1100 Floats |
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