Saturday, 11 January 2014


This morning I blew away the dust on top of my homemade BITX20 transceiver. I built this device in 2008 at the clubstation PI4RAZ in Zoetermeer. If you look up BITX20 in the forum of  you can recall all the details of this project at that time.

Home made BITX20 on top of Yaesu FT450

Manhattan style build-up

The BITX20 is capable of providing an RF signal between 5 and 10 Watts. In my design two IRF510 mosfets have been incorporated into the PA.

When switching on the device this morning, to my surprise, it worked immediately.
Hooked up the G5RV jr antenna and ATU and in an hour time I was able to make 3 QSO's:

IZ1GRH, Stefano, Nr. Milano, 14.217 MHz
IZ6FXP, Al, North-Italy, 14.250 MHz
C37SBX, Andorra, FIS special callsign, 14.215 MHz

This last contact was a nice suprise. This special event station from Andorra is only active during this weekend (11/12 Jan. 2014). It is a special event station related to the FIS World Cup.

Power Amp with 2 IRF510 MOSFETs

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