Post by highmountainradio on Jan 1, 2018 14:07:27 GMT -6
Greetings To All !
Happy New Year 2018 !! I happened to be sitting in my car this morning having a smoke with my coffee and a cool thought popped into my head ! Since the area in which I reside has several very nice and high mountain areas that are readily accessible to vehicular traffic albeit, very seldom will you ever find another motorist in these terrific locations for broadcasting on the FM broadcast band. This morning I was just having a cigarette and coffee at 6:00 AM and just gazing around, my eyes panned the rear view mirror and focused on the built-in fender mounted steel whip car radio antenna that is motor driven and retractable. I thought, I bet, simply by lengthening the element a bit, to 1/4 wavelength for my desired operating frequency and providing an appropriate matching device I would bet it would actually work remarkably well, using the car's body as the radials on a Ground Plane antenna provide.
After a little further thought, I decided to make it as easy as possible because I wanted to try it out later this evening and drive to a high mountain peak that overlooks the entire city as well as numerous surrounding communities in the area and perform a little test broadcast. I was able to clamp another stainless steel antenna element resurrected from another old car antenna and clamp it onto my existing car radio antenna and set it for the appropriate length for my intended broadcast frequency. Just a small amount of modification to the feedline and providing a coaxial cable matching device of the proper dimensions, I was able to load my 15 watt transmitter into it with a remarkably good VSWR.
I will be doing a 'New Year's Day Broadcast Bash' show this evening as dusk arrives.. I will post my findings here, perhaps this may prove to be new trend in covert FM radio broadcasting ! :-) After broadcasting, in order to maintain a covert appearance so as not to draw any attention, the antenna still can be electrically lowered to almost it's entire original length in order to camouflage it from being recognized for it's intended purpose by someone who may be out 'pirate hunting' I use a 15 watt transmitter powered by my car battery @ 12 VDC, 5 Amps of current that can be covertly stowed under my car seat and I use a smartphone as my programming source that is already pre-recorded and stored on it's internal flash memory card.
Some food for thought for other like minded individuals that may be reading this.. :-) I'd enjoy hearing from anyone else who may operate an FM radio station tactically, from the comfort of your own vehicle !
Best wishes for a very Happy New Year to all ! Spooky..