This is the schematic of my very first solid-state 7 MHz QRP CW transmitter.
It requires less than 10 parts. A heatsink for the transistor is a must. The 1000 pF variable is adjusted for maximum brilliance of
the lamp. DX on this rig was ~1000km (VU2SL in Valsad).
source: http://nandustips.blogspot.com/2011/02/simple-7-mhz-qrp-cw-rig.html
It requires less than 10 parts. A heatsink for the transistor is a must. The 1000 pF variable is adjusted for maximum brilliance of
the lamp. DX on this rig was ~1000km (VU2SL in Valsad).
source: http://nandustips.blogspot.com/2011/02/simple-7-mhz-qrp-cw-rig.html
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