[Elecraft] KAT500 antenna selection

[Edward R Cole]

630m is a 7-KHz wide band.  Probably not requiring an auto-tuner.

Most on 630m will be running a very short antenna in terms of 
wavelength which usually incorporates a large loading coil in series.

My 630m antenna is an Inverted-L 43 by 122 feet and I have a base 
coil to ground which tunes out reactance with a movable 
tap.  Matching to 50-ohms is done a couple turns up from the cold 
end.  2:1 SWR is 5-KHz wide.  Efficiency is 4%.  Radiation resistance 
is 0.8 ohms.  EIRP = 4.15w.  My K3 drives a 100w surplus NDB 
transmitter at 0.1 mw.

I QRV on 600m in 2012 as WD2XSH/45 (experimental license)

73, Ed - KL7UW
   http://www.kl7uw.com
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