Wednesday, 21 August 2019

A little bit of history


Most readers will be aware of the VHF/UHF DX Book, put together by Ian GM3SEK and recently made available in PDF format:

http://www.ifwtech.co.uk/g3sek/dx-book/dxbk-new.htm

I contributed the 432MHz transverter section, which worked fine for me but this was probably because I had access to signal generators and spectrum analysers, not readily available in most shacks at the time.  At the time, my qth was suburban Leeds and rather poor, output power was around 10W and noise figure was probably 3-4dB due to cable loss and no mast head preamp.  However, I worked around 60 squares, all tropo and I think we used it a few times with G4ZAP/P during the low powers from Sheffield.  After publication, I swapped a set of boards with Conrad PA5Y, receiving a bright yellow drum kit in return!!  No-one else contacted me about copying the design.







Last year, I decided on an upgrade, pulled out the HGT unit, replacing it with a DB6NT module and a new Mitsubishi PA module 




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