Total posts : 45366
FIRST off this is a really great website and forum. Thanks for all the devotion and hard work that goes into it.
The antenna solution makes a lot of sense, although my family might have some objection to the aesthetics of a 5/8 or Flying Vee prominently “displayed outside.” Also I know that it would be some time before I could get around to that type of project. I had considered a 5/8 and “hiding” it in the attic (house is wood frame), but the combination of relatively low rafters, maybe too low for the 5/8, and how to get a feed up there is deterring me right now. Also the cost for those Comets or whatever… But I may look into this some more down the road…
FYI on the property shape, consider an irregular rectangle approx. 1200++ feet (road frontage) by 1600++ feet deep. (It is a bit irregular and a little bigger in parts.) The house sits in a corner, not too far from the road (150 – 200 feet). Road traffic is non-existant. The property slopes down to a small “hollow” or valley and the house is at high end of the property. The hill we are on (which probably climbs another 200-300 feet of elevation above and behind our house) would block propagation across the “near border.” Elevation drop to the bottom of our property is probably about another 200 feet. Area is very rural and I doubt that the few “neighbors” we have could pick up anything or would even care. A couple hills would effectively block propagation into the small town center, a few miles away. If I ever did want to experiment with community radio, I would have to find another site… (And maybe start another thread on directional wifi or something to get a studio signal there…, but first things first.)
The other issue as PhilB put it would be impedance match, and while I understand the concept, I am clueless as to its implementation with the C Crane FMT.
Right now I am just running the C Crane perched on the top of a high bookshelf in my office with a single (small guage) copper wire of one wavelength clipped to the built in whip antenna and hanging vertically. While it seems to work for now, obviously that has to change and any thoughts would be welcomed. Incidentally I did apply that hack to the C Crane FMT that I found elsewhere in the forum to tweak up its power. (My Belkin Tunecast II is lying mostly unused, except for occasional trips.) Audio is fed from the sound card of one of my office PCs using Windows Media Player. (Another thing that I will have to change over time, seeing all the cool PC audio tricks you guys seem to have.)
Scwis, where do you find that kit that you have the picture for?
(And how would I modify the C Crane for impedances?)
FINALLY, Ancient History
My past life Part 15 experiences were in the 1970’s. I dropped out of this hobby for a long time, so I do not know when the FM regs were changed from 100 mw, which a manufacturer could specify, to the incomprehensible numbers that we all don’t have meters to measure. Back in the 70’s, Radio Shack sold some “wireless mike” devices that used the FM broadcast band and had 100mw specs. I remember an RS kit that one of my friends built and we used for a couple of years for broadcasting and also a handheld mike (pre-assembled, whose case was about the size of, but not the shape of an E-V 635) that had an RCA jack for an aux audio input with a switch to override the built in mic. All was mono in those days (even for some commerical stations) and PLL was not in the picture for these devices, but then again none of the receivers were digital either, so it all sounded fine.