[Elecraft] OT: Mobile operation "bible"
tnnyswy at yahoo.com
tnnyswy at yahoo.com
Fri Apr 1 07:57:28 EDT 2016
>> When I still ran HF mobile, I found that a rig with an
auto-tuner was a big help in extending the useful bandwidth of an
antenna.<<Jim, what type of antenna did you employed the auto-tuner?Was it a screwdriver type antenna as in the HI-Q 5-160?Or, was it an Hustler?
((((73)))) Milverton / W9MMS.
From: Jim Brown <jim at audiosystemsgroup.com>
To: elecraft at mailman.qth.net
Sent: Friday, April 1, 2016 12:09 AM
Subject: Re: [Elecraft] OT: Mobile operation "bible"
On Thu,3/31/2016 2:13 PM, Mel Farrer via Elecraft wrote:
> While I never tune while driving, I got rid of the autotuners for the HI-Q 5-160 antenna and installed a switch to allow me to transfer the antenna to a FG-01 analyzer.
Short loaded antennas are, by their nature, pretty narrow band for
tuning. When I still ran HF mobile, I found that a rig with an
auto-tuner was a big help in extending the useful bandwidth of an
antenna. If, for example, the antenna was resonant on 7075, a tuner
might match it to the rig from 7000 to 7150 or even higher, whereas
without the tuner I'd be limited to about half that.
Bearing in mind that in a mobile installation, coax is too short to
introduce enough loss to matter, so it's merely a matter of making the
rig's output stage happy (and running at full output).
73, Jim K9YC
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