Re: Large Wire Antenna for 17m ... I have tried several different 17 meter...antennas, but the Delta loop is the best I found. ...loop is better that the vertical in it's favored directions by a lot. ... I also used a half square on 30 meters, but have since removed it in favor ... (rec.radio.amateur.antenna)
Re: GPS tracking device allowed in commercial flights? ... > operate any kind of transmitter aboard an aircraft.... > aircraft antennas range from fairly low frequency ... all the proper filtering they need, effectively blocking 900,1800 or 1900 ... Really, if aircraft electronics were so sensitive to RF interference, it ... (sci.geo.satellite-nav)
Re: GPS tracking device allowed in commercial flights? ... >>The risk to interference in avionics is at many places, ... >>operate any kind of transmitter aboard an aircraft....>>aircraft antennas range from fairly low frequency ... is under my car radio... (sci.geo.satellite-nav)
Re: Off Topic - aviation curiosity ... I had a book here which documented a government study of underground... They constructed antennas underground, then used an aircraft to ... (rec.aviation.soaring)
Re: small antennas ... In the 1950's the USAF studied small antennas for the "new" Boeing ... They continued to employ a belly-mount trailing wire on some aircraft at ... (Good info hard to find.) ... If all the money the Air Force could throw at a problem didn't come up with ... (rec.radio.amateur.antenna)
