David Forsyth wrote:
I read somewhere (I think it might have been in reference
to crystal sets) that you can use coax for an AM lead-in. Would this be
better for a longer/more convoluted lead-in?

Not necessarily. If you need shielding for noise purposes that might be
worthwhile but apart from that there's no advantage over just a single
wire. The radios you're typically working on have high impedance inputs.

In a random-wire installation, the total length of the wire IS the
antenna. There is no lead-in per se. By using a shielded cable you are
effectively shielding that portion of your antenna. I think you might
find it won't work as well on BCB with the shield grounded and you would
have to lift that at the radio end negating having it there in the first
place.

On shortwave freqs the loss of the cable in a mismatched state such as
feeding a random wire (or an old hi-z radio) may also work against you.

I'd go with the plain wire unless there is a noise problem that is being
picked up by the vertical portion of the antenna.

My 2c.

-Bill

--exray-- wrote:

I'd go with the plain wire unless there is a noise problem that is being
picked up by the vertical portion of the antenna.


Being a smarter than average bear (my own opinion of course :~) I
figured I'd use coax to bring my long wire antenna into the house, and
I'd ground the shield.

Didn't work very well.

Now I'm just using plain wires for each of the antenna and ground and it
works very well. I'd say that my antenna outside the house is about
10-15' off the ground and runs for about 100' in a 50' x 50' "L" shape.

--
regards from ::
John Bartley
43 Norway Spruce Street
Stittsville, Ontario
Canada, K2S1P5
( If you slow down it takes longer - does that apply to life also?)



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--exray-- wrote:

I'd go with the plain wire unless there is a noise problem that is being
picked up by the vertical portion of the antenna.


Being a smarter than average bear (my own opinion of course :~) I
figured I'd use coax to bring my long wire antenna into the house, and
I'd ground the shield.

Didn't work very well.

Now I'm just using plain wires for each of the antenna and ground and it
works very well. I'd say that my antenna outside the house is about
10-15' off the ground and runs for about 100' in a 50' x 50' "L" shape.

--
regards from ::
John Bartley
43 Norway Spruce Street
Stittsville, Ontario
Canada, K2S1P5
( If you slow down it takes longer - does that apply to life also?)



-----= Posted via Newsfeeds.Com, Uncensored Usenet News =-----
http://www.newsfeeds.com - The #1 Newsgroup Service in the World!
-----== Over 100,000 Newsgroups - 19 Different Servers! =-----