27 Jan 2011
4m transverter paper design
Today I have been gathering data and information for my 4m QRP transverter and started on an "on paper" design around an NE602 RX mixer, 2N3904 3rd overtone oscillator, 2N3904 driver(s) and a 2N3866 PA. It is surprising how much can be done on paper before you start by referring to datasheets and on-line RF calculators. I'm wondering if my T50-6 toroids will just stretch to 4m.
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4 comments:
I remember my boss designed circuits on the back of Fag packets. He smoked a lot of Fags, and he is still in the land of the living.
Tony
Hi Roger,
I am following your progress with interest.
Ian MW0IAN
Hello roger pleased to see your giving 4m a try i think you will realy enjoy this band especialy during the sporadic E season i am looking forward to see your transverter come togeather and may fire up the soldering iron i could do with building one for portable activity SOTA. etc
73
David
Very interesting Roger. In The Netherlands it is expected that spring this year 70-70.5 MHz will come available for ham-radio. Thinking of building a transverter or buying an FM 4m rig like the Condor3000 (AS550).
73
Ron
PA2RF
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