Something to bear in mind as one works on transmitting gear for 630 meters:
Much
surplus and vintage gear was not intended for a 50-ohm load. They
originally worked into short-for-the-wavelength antennas, and most of us
will be using just that sort of antenna for our ham operations. So
there may not be any good reason to convert the transmitter's output to
drive 50 ohm loads, just to then have to build a matching network to
raise the antenna resistance to 50 ohms.
You can read and see some of my experiences on my website at
http://www.wd8das.net/630m.html
I also wrote an article for QST, which can be read here...
http://www.wd8das.net/630mPractical.pdf
And I have a video presentation posted here...
http://www.wd8das.net/HamExpo/630mPractical.mp4
Steve WD8DAS
sbjohnston@aol.com
http://www.wd8das.net/
http://af4k-crystals.com
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