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.
Maybe it is Tropospheric Ducting After All -- 99.5 FM WIDI Puerto Rico
Received in the Dominican Republic
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*Invest 94L moved arcoss the Mona Passage yesterday, lowering temperatures,
bringing lots of rain and relatively high winds to the area. I happened
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2 days ago
Interesting... one may also consider penning down a crystal... hmmm, I will look into this.
ReplyDelete73, Joachim