Like Dave mentioned, there is info in the old qrp group from the 25th anniversery NC-40 build...
Here is what I wrote (message #14308):
?
"I am running a 1n4007 in mine, works great.
I am using Chuck's crystals so my VFO is at 2.9mHz but I get 60KHz range out of it.
Don't think it is as stable as Chuck's but I tested from cold room start and for longer
time... ?about 100Hz.
Didn't buy the specified varactor but tried LEDs, 1N4001, 1n9148, etc. ?best was the
1N4007."
?
73,
Gary
WB6OGD
?
