thanks for the input!

the antenna I ve started in a 60 ft. 14g. copper wire, up in the trees
away from the house. I,d like to feed this into the house with rg58. my
radio tunes continuosly from 3 to 30 K, but I have also been mucking
around with some crystal sets which are more limited.

I,ve read that the antenna impedance is likely to be around 450 ohms,
which would be fine staight to the antenna connection on the receiver I
guess, but I would like to use the coax to protect the signal from all
nasty stuff my house generates (and to protect the house from the
potentially nasty stuff my antenna might!). So I would like the signal
to go from 450-ish to 50 and back to around 500...

Thanks again...and dont worry about me not having fun...
Mike


Hal Rosser wrote:
"mw" wrote in message
...

Hi all,
newbie question here...sorry if its covered elsewhere. My radio has a
clip terminal for an ext. antenna, and wants to see 500 ohms. I want to
put a transformer at the longwire for the coax feeder to show it 50 ohms
for the trip into the house...will it work if I put another transformer
in the house to get it back to hi-z?
The transformers will be home made ferrite coil jobs as described in
John Bryants excellent article.
TIA
mike


Just hook the longwire to the radio directly at first.
Then run a ground wire to the [gnd] terminal.
(assuming its receive only).
You can also play around with an antenna tuner too - pick one up at a
hamfest for a few bucks.
But its also fun to play with xfrmrs too! You didn't mention the freq you're
listening to or how long the wire was, so you don't really know the
antenna's impedence, so an antenna tuner looks better and better.
Have fun!