Today's Message Index:
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1. 02:57 PM - Radio/Intercom interference with engine issue (N223RV@AOL.com)
2. 03:27 PM - Re: Radio/Intercom interference with engine issue (Scott R. Shook)
Message 1
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| Subject: | Radio/Intercom interference with engine issue |
rv-list@matronics.com, aeroelectric-list@matronics.com
--> RV7-List message posted by: N223RV@aol.com
I have an interesting issue. I am flying my friends RV-7, this is the
second flight. I had the throttle basically full (breaking in the engine) and
the
radio progressively seemed to get worse (over a 515 minute period) with
static when receiving transmissions from ATC. It got so bad, I could barely hear
him. He said he had no issues hearing me. I told him I was going to come
in for a full stop, pulled back the throttle, and could hear fine once again.
So I called the controller and told him I was going to go around again and
once I gave it over about 75% power, the radio once again had a bunch of
static (only when receiving transmissions).
The plane has a PS Engineering PM1000 intercom, Garmin 430 radio, and a
Headsets Inc ANR in a Dave Clark 13.4 headset. It also has a Lightspeed
electronic ignition on the right mag. I did a mag check in the air and it did
not
seem to make a difference.
I pulled and reseated the headset plugs and that did not fix the issue.
Does anyone have any ideas what to check? We had no issues on the first
flight. Thanks in advance!
-Mike Kraus
N223RV RV-4 Flying
N213RV RV-10 Tailcone Complete, working on wings
Message 2
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| Subject: | Radio/Intercom interference with engine issue |
--> RV7-List message posted by: "Scott R. Shook" <sshook@cox.net>
Mike
Having had a very similar experience in a different situation; I found it to
be a loose wire causing what sounds like static. Essentially what was
happening at certain vibrations/frequencies I would hear the same static and
sometimes there was even complete loss - it actually was a loose wire
partially disconnecting/connecting very quickly.
I would suggest tracing all the way from the headset jacks to the radio
before having someone pull the radio and look at it. I think you may find
the solution to be a simple one if it is only happening at certain engine
speeds.
Just my 2 cents...
Scott
HS Complete!!!
VS being skinned!!!
-----Original Message-----
From: owner-rv7-list-server@matronics.com
[mailto:owner-rv7-list-server@matronics.com] On Behalf Of N223RV@AOL.com
rv-list@matronics.com; aeroelectric-list@matronics.com
Subject: RV7-List: Radio/Intercom interference with engine issue
--> RV7-List message posted by: N223RV@aol.com
I have an interesting issue. I am flying my friends RV-7, this is the
second flight. I had the throttle basically full (breaking in the engine)
and the radio progressively seemed to get worse (over a 515 minute period)
with static when receiving transmissions from ATC. It got so bad, I could
barely hear him. He said he had no issues hearing me. I told him I was
going to come in for a full stop, pulled back the throttle, and could hear
fine once again.
So I called the controller and told him I was going to go around again and
once I gave it over about 75% power, the radio once again had a bunch of
static (only when receiving transmissions).
The plane has a PS Engineering PM1000 intercom, Garmin 430 radio, and a
Headsets Inc ANR in a Dave Clark 13.4 headset. It also has a Lightspeed
electronic ignition on the right mag. I did a mag check in the air and it
did not seem to make a difference.
I pulled and reseated the headset plugs and that did not fix the issue.
Does anyone have any ideas what to check? We had no issues on the first
flight. Thanks in advance!
-Mike Kraus
N223RV RV-4 Flying
N213RV RV-10 Tailcone Complete, working on wings
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