[Elecraft] Field Day tips
Jerome Sodus
jsodus at comcast.net
Tue Jun 17 08:33:07 EDT 2014
About #1 below and the wire in the tree with radials off the ground...
I was instantly reminded about Al Brogdon W1AB and his "Killer Antenna".
He wrote about it in 2006 in his ARRL book "Low Profile Amateur Radio"
(Chapter 8 and also pages 44-48) and in QST-July1999.
The "Killer Antenna" is something I've kept in mind ever since I bought the
book seven years ago and is one of the reasons I bought a KX3, so I could
try it out portable, something I cannot do on my postage-size lot.
His portable results seemed impressive for an idea so simple; granted he was
using a Kenwood TS-50.
73 Jerry KM3K
-----Original Message-----
From: Elecraft [mailto:elecraft-bounces at mailman.qth.net] On Behalf Of Jim
Brown
Sent: Tuesday, June 17, 2014 2:30 AM
To: elecraft at mailman.qth.net
Subject: Re: [Elecraft] Field Day tips
On 6/16/2014 8:36 PM, Wayne Burdick wrote:
> Here are our annual tips for getting the most out of your Elecraft rig at
field day:
I'll add some more tips about QRP on Field Day. I've done three QRP
Field Days, and one of them our group won for 1A battery. The same group
came in second when we tried 2A with a second station on SSB part time.
1) Use the most efficient antennas that you can. A wire thrown over a
tree and a radial laying on the ground will get you on the air, but a
resonant dipole high in those trees can easily be 3-6 dB better. And
even more radials with that wire in the tree, and picking them up off
the ground, will add a few dB to your signal.
2) Use the most efficient feedline that you can. If you're only putting
out 5W, don't burn 2W in RG58. Use RG8, RG11, RG213.
3) Get your antennas as high as you can. On 80M, 10 ft more height for a
dipole is worth about 1 dB, 5 ft for a 40M dipole.
4) Don't waste your time with SSB on FD. CW can be reasonably
competitive QRP, and a lot of fun. SSB only be described as a struggle,
and is definitely not fun. Been there, done that, burned the Tee shirt. :)
The combination of #1, #2, and #3 can easily make a 10-15 dB difference
in your signal. 13 dB is the difference between 5W and 100W.
And here are some tips to help you avoid RF noise problems on Field Day.
If you can't hear 'em, you can't work 'em.
http://nccc.cc/pdf/CQP-RFI2013-2.pdf
73, Jim K9YC
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