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Old November 9th 06, 04:11 AM posted to rec.radio.shortwave
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Posts: 4,494
Default Question about T2FDs

In article . com,
"Steve" wrote:

I've been reading about these and am intrigued.

These antennas are often mounted in a sloping configuration, but how
steep can the angle be? I'm sure the steepness of the angle is going
to effect the antenna's radiation pattern, but will how? Does it
cause the antenna to become highly directional as the angle
increases?

How do these antennas perform in relatively noisy environments? I've
read that they're relatively slow to pick up local noise, but I'd
like to hear about some people's first hand experiences with them.

Are these antennas inevitably eyesores to those philistines who don't
appreciate the beauty of a good antenna? Is there a way to make them
less conspicuous?


Sloping the antenna is an attempt to cause it to be more broadband.
This is not much help on reception but allows the antenna to be used
over a wider range of frequencies on transmit due to a reduction in
VSWR.

The termination resistor causes the antenna to be lossy and helps with
the VSWR aspect on transmit but is no help on reception.

The matching section is also a wast of time on receive. You are better
off using a broadband transformer.

There is nothing great about this antenna for reception. You are better
off using a folded dipole.

--
Telamon
Ventura, California
 
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