Europa-List Digest Archive

Mon 04/28/14


Total Messages Posted: 1



Today's Message Index:
----------------------
 
     1. 01:17 AM - Re: Noisy Comm Radio (Brian Davies)
 
 
 


Message 1


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    Time: 01:17:33 AM PST US
    From: "Brian Davies" <brian.davies@clara.co.uk>
    Subject: Noisy Comm Radio
    Hi Troy, How are you powering the iPad? If you are using a cigarette lighter socket with a cheap USB power converter it could be generating a large amount of noise . Try running the iPad off its internal battery to see of this is the case. Before diving into the wiring and checking for bad connections/ bad earths it is always worth standing back and saying "what have I changed?" It is then a good idea to get a pal to communicate with you on an unused frequency using a hand held to help you trouble shoot. First try switching things off in a systematic way to see what makes a difference. Try switching off the intercom. Most intercoms have a direct radio transmit feature to allow for intercom failure. Good luck! Brian Davies -----Original Message----- From: owner-europa-list-server@matronics.com [mailto:owner-europa-list-server@matronics.com] On Behalf Of Troy Maynor Sent: 28 April 2014 03:26 Subject: Europa-List: Noisy Comm Radio Hi All, I know this has been discussed before on the forum. I have looked til I bleary eyed and can't find the answer I'm looking for. When I key the mike I have started getting a loud static noise or feedback that wasn't there before. I have near radio silence of incoming traffic until I am in the pattern and then it's scratchy. It sounds ok with the engine off but I don't know how far I'm transmitting or receiving on the ground. I am running an ICOM A200 and Bob Archer antenna. The antenna is mounted on the fuselage wall behind the D panel port side. It has always performed well until recently but can't pin down what has changed. I have checked the security of all the grounds on and forward of the firewall, as far as I can tell. I was thinking it is time to pull the instrument panel but got to thinking about these torroids or suppressors. Can I just string some of these onto the RG58 coax back near the antenna and maybe help matters? I'd really appreciate any pointers to look at specifically. I have a Sigtronics intercom with the music switcher also. Can the presence of an IPAD communicating with a Stratus ADSB cause this? Most of what I found on the forum dealt with the transmitter affecting other equipment. This is not the case. I am hearing huge noise when I key the mike and can't here others calling me until I'm very near, like in the landing pattern. I can also hear the electric gyros in the headsets a little but that has always been there but not too noticeable, a little pop from the strobes faintly, but I can live with that. I just need to kill the giant, not the little noises necessarily. I'd like to figure out what change took place. Thanks, Troy Maynor 240 TT hours to date Read this topic online here: http://forums.matronics.com/viewtopic.php?p=422480#422480 ----- No virus found in this message. Checked by AVG - www.avg.com




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