assembling the ZZRX-40 I wanted to try another kit from the Four State
QRP Group. I did not need a keyer—my main rig has a
built-in keyer, as does the one-watter. On the other hand a
self-contained battery-operated keyer is not a bad idea. It
be taken anywhere and used for CW training or practice.
State QRP Group): testMsg.mp4
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