Don Blevins writes in a message to Scott Christensen
DB> The present antenna I am using is some 200 feet of the 12 ga
DB> stranded wire.You say to ground one end with a resistor...which
DB> end and what Ohm resistanance on the grounded end and how grounded?
That would create a "Beverage" antenna, but it isn't nearly long enough. To
be effective, a Beverage antenna must be at least a wavelength long -
preferably, many wavelengths. 200 feet isn't going to cut it below about 10
MHz.
I don't have the difinative information on the terminating resistor - I
believe it would have to be the same as the impedance of your antenna - I
believe about 75 ohms would be about right - but like I say, you will need
more wire strung to work less than 10 MHz.
You will be better off just running the 200 feet as a random length wire -
like you are now. You would then be able to receive well down below the
broadcast band.
DB> the overhead electrical wires since in any directin i go I
DB> am within say 30 feet or less of them.Mind you this thing is
DB> some 20 feet in the air
Any hum or buzzing?
DB> Something else of interest and I have not seen much written
DB> on these, is the possible outcome or reception in a vertical
DB> antenna. Any guess's on that area?
I am an ex broadcast engineer. I have known many engineers that borrow the
big vertical stick to do a little DXing after the station is off the air for
the night. They work great!
DB> IT wasn't until some four or five years ago I did educate myself
DB> on the benifit to an external antenna attached to the telescopic
DB> by means of a clip,with out running a ground.Now since I see
DB> the idea of FAX and such reception with a better than occassional
DB> use table top model,( Drake is what I'm thinking of),I really
DB> do have to give a huge amount of considration to some other
DB> type of antenna config.Any help you or your readers can offer
DB> would be most welcomed..
A nice radio with a real antenna jack is always a good idea...
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