This little winner uses a 6AG7 crystal oscillator to drive
a 6L6 final on 40 meter CW. Power output is 8 Watts.
The chassis, front panel, and cabinet were salvaged from a
junked 1950s Heathkit TV service instrument and modified
as required. The plate current meter is a new-old-stock
1960s Lafayette 0 to 100 mA unit. An external power supply
is used. Power requirements are +300 VDC and 6.3 VAC.
The circuit is based on a design which appears in my
favorite little radio project book,
"104 Ham Radio Projects for Novice and Technician" (TAB
Books, 1968). I built this one in October, 2003.
OK, old timers... doesn't this look like something you
might have built back in your novice days?
I take no credit for this design. It's from my favorite project sourcebook, "104 Ham Radio Projects for Novice and Technician" (TAB Books, 1968).