[Antennas] 80 Meter Inverted V
Mike Rhodes
[email protected]
2002年9月16日 14:05:57 -0400
Since your note implies that the antenna is a commerical product, the
manufacturer has probably allowed more than enough length to resonate the
antenna at the bottom of the band. If you check with an antenna analyzer, it
is most likely resonant below the band. The good news is that while the
bandwidth will be fairly narrow in the 80 meter band, you will be able to
change the length of the antenna in large increments (i.e. 6 to 12 inches
per side) and not worry about jumping from one end of the band to the other
in one adjustment. In fact, it looks like you can probably change the length
of your dipole about 1.5 feet (9 inches per side) for every 100khz of
frequency change you want to make. Have fun and enjoy your new antenna. For
even more fun, consider building your own dipole for your next wire antenna.
Not only will you have the feeling of accomplishment when you make that
first contact using it but you will save enough money to build a bunch more.
73 & DX de
Mike / W8DN
----- Original Message -----
From: "Jim Boyd" <[email protected]>
To: "Antenna Net" <[email protected]>
Sent: Sunday, September 15, 2002 10:56 PM
Subject: [Antennas] 80 Meter Inverted V
Dear Group,
I just put up my first inverted V. No coils, just out of the package saying
that it is for 80. Checked the SWR, very high. Here is the question: With
inverted V's, is it common to have to use a tuner?
73
Jim
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