In addition to mounting all but the inductors and transformers for 80m the Warbler and a few more components for the 40m WSPR Warbler I have built a RockMite 30, for use as a Grabber RX only for 30m.
The evening welt with getting the Local oscillator (10.140MHz Xtal) down to 10.138.700. This is done by bypassing the frequency switching, using a simple serial connection of a 10uH inductor and a variable capacitance ( 12 - 30pF ).
The input Xtal filter will be added later, after stability test of the local oscillator, and will probably be a simple SIngle Xtal tunable filter.
Tomorrow will be busy with some non radio activities, so progress will be much slower than it has been this week end.
School for Danger -- the SOE, and Radio, in Nazi Occupied France
-
*Hack-a-Day had a link to this film. It is really good. There is some
stuff about radio, and especially the S-Phone system. But the bigger
message of t...
5 hours ago
Interesting... one may also consider penning down a crystal... hmmm, I will look into this.
ReplyDelete73, Joachim