---------------------------------------------------------- Avionics-List Digest Archive --- Total Messages Posted Sun 05/20/18: 2 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 08:39 AM - Radio or Television Tower Buzz (mike>bentley) 2. 09:04 AM - Radio or Television Tower Buzz (Kelly McMullen) ________________________________ Message 1 _____________________________________ Time: 08:39:18 AM PST US Subject: Avionics-List: Radio or Television Tower Buzz From: "mike>bentley" When flying in the vicinity of radio or TV towers, I get a constant buzz or static over the radio. Sometimes I can hear the conversation or music from the station, but just barely. It seems to start when I'm within a 1/2 to 1/4 mile from a tower. Anyone else have this type of issue or resolved this type of issue? -------- Mike Bentley Joplin, MO N5498B Kitfox Model 4-1200 Jabiru 2200 #438 Rotec Aerosport LCH Heads Prince Prop (64 x 34) Ellison EFS-2 Throttle Body Read this topic online here: http://forums.matronics.com/viewtopic.php?p=480245#480245 ________________________________ Message 2 _____________________________________ Time: 09:04:29 AM PST US Subject: Avionics-List: Radio or Television Tower Buzz From: Kelly McMullen What is happening is that the high power from the towers is exciting one of the oscillators in one of your radios. What is most common, especially with older 121.5 ELTs is for their transmit oscillator to be activated by the high power RF from the towers, generating a weak white noise signal that breaks squelch on your com radio. I used to have that problem with a previous aircraft, where there are about 15 high power towers on a mountain a few miles south of the Phoenix Class B and in line with the VFR transition through the Class B. Communications with approach control while flying that transition would become very difficult. Newer 121.5 ELTs and 406 ELTs are better shielded for that. Also, moving a com antenna from top of fuselage to belly can help isolate the ELT from the com antenna. On 5/20/2018 8:38 AM, mike>bentley wrote: > > When flying in the vicinity of radio or TV towers, I get a constant buzz or static over the radio. Sometimes I can hear the conversation or music from the station, but just barely. It seems to start when I'm within a 1/2 to 1/4 mile from a tower. > > Anyone else have this type of issue or resolved this type of issue? > > -------- > Mike Bentley > Joplin, MO > N5498B > Kitfox Model 4-1200 > Jabiru 2200 #438 > Rotec Aerosport LCH Heads > Prince Prop (64 x 34) > Ellison EFS-2 Throttle Body > > > > > Read this topic online here: > > http://forums.matronics.com/viewtopic.php?p=480245#480245 > > > > > > > > > ------------------------------------------------------------------------------------- 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.