[50mhz] Cushcraft A50-3S Question

[Marvin L. Jones]

On Mon, 11 Feb 2008, Bill W5WVO wrote:

> This is a "me too" post.  :-)  Yes, what Jonesy said.
>
> If at all possible, get or borrow an MFJ-259B (or newer) antenna analyzer. This
> will allow you to adjust the antenna for true resonance (reactance = 0,
> resistance = 50) at your desired frequency. There just ain't any easy to do
> that without such an instrument.
>
> Connect it as close to the antenna coax connector as possible -- a one-foot
> jumper is good. Make your trial adjustment to the antenna, then STEP BACK away
> from the antenna until the readings stop changing, then note the readings.
> Repeat. If you have the antenna mounted on a plastic or wooden chair or ladder
> (NO metal) and pointing straight up at the sky, you shouldn't have to step back
> too far to get out of the field.

What I have made up for this purpose is a 1 wavelength long (mind the
velocity factor!) coax 'jumper' to use with the MFJ-259x.  Or, if you
are careful, your rig (set for LOW POWER) and the SWR meter attached
right at the rig -- with the coax jumper running over to the antenna.

A little easier with 2M antennas -- using a full coverage HT.

73
Jonesy
-- 
  Marvin L Jones     | jonz         | W3DHJ  |  linux
   Pueblo, Colorado  |  @           | Jonesy |   OS/2     __
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