31 Jul 2012

Finally RIP Heathkit

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It was a long time finally dying after the last Heathkit amateur radio product was made by this once fine company, but I read today on the S...
2 comments:

Sub-harmonic mixer based 10m WSPR transceiver

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My favourite HF band is 28MHz and I often put my FT817 on and run WSPR in the background whilst getting on with other things in the shack...
10 comments:

Elecraft KX3 user satisfaction poll

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A few weeks ago I ran a poll on the Elecraft KX3 Yahoo group asking owners how satisfied they were with the KX3 QRP radio released earlie...
1 comment:
27 Jul 2012

Updated MF transverter schematic

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The current Rev D version of the 10W MF (472/500kHz) transverter is shown below. There are a few changes around the PA and output filter. ...

The Lesser Chirpy 10m CW transceiver

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SPRAT 151 had my article on Chirpy, an ultra-simple, very basic crystal controlled CW transceiver for 28MHz. This does work and has even man...

472/500kHz video

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There is now a short video describing the 472/500kHz 10W transverter on my YouTube channel. This shows the transverter working on WSPR wit...
26 Jul 2012

472/500kHz antenna improvements needed

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For the last month whilst testing my 472/500kHz transverter I've been using a highly compromised antenna. Essentially it is a very short...
4 comments:
25 Jul 2012

New MF transverter ready for testing

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472/500kHz transverter built more presentably Being satisfied with the latest 10W version of my 472/500kHz transverter breadboard, I hav...
2 comments:
21 Jul 2012

Results with the new 500kHz transverter

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WSPR reports received this evening (40mW ERP) A decent evening testing the new 472/500kHz transverter with WSPR reports from 6 different...
1 comment:

472/500kHz transceive transverter

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Rev C Transverter (one correction: o/p LPF cap 6n8, not 100n) Armed with the sensitivity data in the last post I have now modified my...
4 comments: