6 meter firewall

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In the late 50’s International Crystal sold a VFA-1 tube cascode 6 meter amplifier. I use it on a vertical 6m antenna to monitor the band and to protect the RXA port on my 6600. It also receives better than my Hygain 66DX6 beam.

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Jack WA9FVP

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Posted 2 months ago

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Bill W2PKY

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Eskip signals can have flipped polarity.
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Jack WA9FVP

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The beam was in the wrong direction but when I tuned it to the correct heading, the signal was a tad better on the vertical. The IR VFA-1 was given to me from a old friend W9SKD (SK) and was in my junk box for years. Searching the internet, I found a 1950’s article in Electronic Experimenters magazine that inspired me to resurrect it.
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Clay N9IO

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Jack check ur email.
Sent you a message.
Clay N9IO