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
Dubus-NA Business mail:
[email protected]
______________________________________________________________
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:[email protected]
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to [email protected]
