30 December 2009

Calendario Contest VHF/UHF/SHF Italia 2010 per agende elettoniche

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F inalmente, dopo due anni di pausa, per il 2010 sono riuscito a pubblicare il calendario dei contest VHF&up in formato vCalendar che co...
17 December 2009

Stuck with 50 MHz QRP TX

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I have been thinking for a week how to proceed on my 50 MHz TX and I haven't decided yet. I have one fixed frequency transmitter that p...
11 December 2009

Back to WSPRing

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These days my RTX setup is collecting dust, mainly because 30m are closed when I would be able to use them (after 22Z). So I decided to spar...
09 December 2009

cdzservices.exe hanging mobile devices (mSuite sync problem)

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Note: this is a service information not really related to my usual lab activities, but I found no mention elsewhere in the net. I hope to h...
1 comment:
07 December 2009

My 6m FM TX

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L ooks like I have finally gotten around the proper deviation for a 50 MHz FM TX, but many problems still have to be tackled down. I tried t...
02 December 2009

Which RX for my 50 MHz QRPp FM TX

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I received this question from Pedro, a LU HAM: "What are you planning to use for the 50 MHz FM project receiver?" Here's my an...
30 November 2009

A classic VXO with a CMOS gate

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I have been captured by the fact that a TTL/CMOS gate can serve as a XTAL oscillator, as well as frequency multiplier. That was few years b...
18 November 2009

Electret microphone output

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F or my reproduction of the FredBox/SixBox I wanted to know how much voltage output to expect from an electret microphone. Actually my mind ...