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Old November 29th 03, 06:54 AM
matt wilson
 
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Any tall light-poles nearby? You could put a tap onto one a couple of feet
up from the base if you have an antenna tuner.
100mW in for 60mW out? Doesn't sound like much of an amplifier!

"gudmundur" wrote in message
...
I do sound work at horse shows, and would like to provide my audio source
to vehicles parked at the show. I have a real nice 100 milliwatt input
1.6mhz transmitter which shows about 60 milliwatts of output at 50 ohms.

I would like to build a transmitting antenna that would be 4 feet in

length
and having the 3/8 24 thread at the bottom so I can fasten it into my

hamstick
mag mount base.

I am thinking a 1 inch diameter wooden dowel 4 feet long, and wrapped

evenly
from bottom to top with perhaps #22 wire.

Any idea how much wire it would take to begin to act like a 50 ohm

impedance
at the base? Would you solenoid wind it bottom to top, or would it work

better
with maybe a 4 inch high multilayered coil at the bottom and 3.5 foot

steel
whip antenna.

I am not out to **** off the FCC, and with a mere 60 milliwatts of output
power at 50 ohms, I don't think anyone beyond 300 yards will even here it.
I do however want to be clearly heard on an A.M. car radio anywhere on the
show grounds. There are no local stations on 1600khz, or even anywhere

near
it, and since these shows are only in the daytime, I won't be competing

with
skywave, or 50kw clear channels.