Search found 13 matches

by Bonaro
Tue Jan 10, 2017 2:45 am
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

...addresses the fact that this is illegal I've been wondering about that. What one is doing here is capturing electricity that is already wasted; it is never going to reach it's destination. It's not like putting a loop of wire under the lines and making a one turn transformer; that is definitely ...
by Bonaro
Thu Jan 05, 2017 12:50 am
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

Agreed...Finding the right transformer is the trick because the strength of the supply is extremely dynamic and changes constantly with proximity, humidity, temperature and load. After I transformed it to a lower voltage I would need a regulator circuit to make it stable. I believe I could manage en...
by Bonaro
Mon Jan 02, 2017 2:08 am
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

Yep. I strung a clothes line looking "antenna" under the powerlines once. I was triying to catch a bit of this stray power for some practical use. It was interesting but pointless. I gave up That's, err, rather more energy that I'd imagined would be reasonable to capture so easily. Ouch! Pity you'v...
by Bonaro
Thu Dec 29, 2016 12:59 am
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

I had decided to build a Yagi, tuned to the frequencies I normally listen to. I have worked out director size and spacing. Driven element type and dimensions, step up ratio calculations, impedance, step up ratio....on and on. I have actually learned a lot. I also learned there was a lot more to lear...
by Bonaro
Tue Dec 27, 2016 2:53 pm
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

There is a huge amount of energy being thrown off these lines. When it's cold and wet outside I can stand under them and hold a 4' fluorescent tube over my head and it will light bright enough to read by. The tube lights up because you are standing in the dielectric of a high voltage capacitor! The...
by Bonaro
Wed Dec 14, 2016 1:55 am
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

Thank you Mike. I have responded inline below in bold It seems you are looking for a long way around what should be a short cut. This is typical behavior for me. If there is a harder way, I have usually found it Yagis are typically made of lightweight metal. I'm not aware of any reason why the drive...
by Bonaro
Wed Dec 14, 2016 12:05 am
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

I am going to try to build a yagi. The two stations I always listen to have their repeaters in the same hilltop and I really don't tune to any other stations so a yagi will work great. I found a calculator online that will tell me the length of the director elements and spacing. I have 1" aluminum t...
by Bonaro
Sun Dec 11, 2016 3:04 pm
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

If you enjoy the challenge a Yagi would be your best bet. As noted, the problem is matching the "driven" element, that is, the element connected to the radio. On a Yagi, the remaining elements act to concentrate the received signal into the single element used for reception. Some designs use a fold...
by Bonaro
Sun Dec 11, 2016 2:55 pm
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

Currently I only have a 20' piece of wire stapled to the rafters How are you "feeding" this? Off the end or from the middle as a sort-of "T" antenna? 20 feet may be too long for either of those. One of the best shorter-range antennas is the simple twinlead folded dipole that used to come with every...
by Bonaro
Sun Dec 11, 2016 2:51 pm
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

If you get decent reception with a simple wire in the attic, a 3 or 4 element yagi mounted outside will probably be plenty get full quieting. On the other hand, a simple, cheap, omni loop may be all you need at 50 miles for Class C stations. A yagi such as" http://www.mcmelectronics.com/product/STE...
by Bonaro
Sun Dec 11, 2016 12:50 am
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

I have seen plans for a Yagi antenna and I can build this. I have aluminum tube and lots of copper wire laying about

Will it work better if I make it bigger?...tips?
by Bonaro
Sat Dec 10, 2016 5:15 pm
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

Re: FM radio antenna

I will explain my situation and maybe you can make a suggestion. I live in the foothills of south Puget Sound and I'm trying to tune to stations only in Seattle, about 50 miles away. I have near line of sight with only a couple low hills between us. I also have 750Kva power transmission lines in the...
by Bonaro
Sat Dec 10, 2016 1:45 am
Forum: FM Radio
Topic: FM radio antenna
Replies: 24
Views: 3235

FM radio antenna

I want to improve the FM radio reception in my garage/man cave. I want to build a indoor or outdoor antenna. I have been googling around for some antenna plans and found many but I dont know which one to build. I am pretty handy about most things but I am just learning about antennas/eletronics. Can...