---------------------------------------------------------- Avionics-List Digest Archive --- Total Messages Posted Fri 09/18/09: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 12:44 PM - Re: KX155 noise-only (zwakie) 2. 09:12 PM - Re: Re: KX155 noise-only (Charlie England) ________________________________ Message 1 _____________________________________ Time: 12:44:50 PM PST US Subject: Avionics-List: Re: KX155 noise-only From: "zwakie" I just returned from my aircraft and tested transmission, using a handheld as a receiver. The radio IS still transmitting, so the problem is outputting to the headset through the intercom. Read this topic online here: http://forums.matronics.com/viewtopic.php?p=263720#263720 ________________________________ Message 2 _____________________________________ Time: 09:12:35 PM PST US From: Charlie England Subject: Re: Avionics-List: Re: KX155 noise-only Being new to maintaining and troubleshooting issues with avionics, I am kind of hoping someone can put me in the right direction to get my NAV/COM set working again. My KX155 stopped functioning. All that I am getting now is noise in the headset. Not getting my voice echoed either. I've tried all variations for squelch and volume, on radio, headset and intercom - nothing but noise at every possible combination. When pressing the PTT-switch, the "T" for transmitting is showing, but I can't state for a fact that it actually is transmitting (I will test that on a dummy frequency using my handheld radio as a receiver the next time at the hangar). Does anybody have any suggestion to the most likely causes please? Thanks. Marcel zwakie wrote: > > I just returned from my aircraft and tested transmission, using a handheld as a receiver. > > The radio IS still transmitting, so the problem is outputting to the headset through the intercom. > > Hi Marcel, I pasted your 1st message into this one to get all the symptoms together. What kind of noise? Is it 'white' noise like you'd hear on an AM radio tuned between stations, or an old TV set to an empty channel? If so, does the radio's volume control have no effect on the noise volume? If no effect, have you checked the nav section's volume? I've actually seen this happen to people on a couple of occasions with combo nav/comms. The nav (noise) volume can overwhelm everything else in the radio. If it's not white noise, and the nav volume is in fact turned down, and the comm volume is in fact turned down, is it a hum or buzz? If so, is it still there if you unplug your mic cord? If so, it might be that the audio output of the radio really does have a problem. Charlie ------------------------------------------------------------------------------------- Other Matronics Email List Services ------------------------------------------------------------------------------------- Post A New Message avionics-list@matronics.com UN/SUBSCRIBE http://www.matronics.com/subscription List FAQ http://www.matronics.com/FAQ/Avionics-List.htm Web Forum Interface To Lists http://forums.matronics.com Matronics List Wiki http://wiki.matronics.com Full Archive Search Engine http://www.matronics.com/search 7-Day List Browse http://www.matronics.com/browse/avionics-list Browse Digests http://www.matronics.com/digest/avionics-list Browse Other Lists http://www.matronics.com/browse Live Online Chat! http://www.matronics.com/chat Archive Downloading http://www.matronics.com/archives Photo Share http://www.matronics.com/photoshare Other Email Lists http://www.matronics.com/emaillists Contributions http://www.matronics.com/contribution ------------------------------------------------------------------------------------- These Email List Services are sponsored solely by Matronics and through the generous Contributions of its members.