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Station

The current QRA does not allow the erection of antennas outside, radio activity is limited to certain HF bands, voice and telegraphy.

The main transceiver is an FT891 Yaesu (5 to 100 w) with an indoor magnetic loop antenna 80 cm in diameter. Its frame is made of copper wire, is covered with copper sheets and fitted with a motorized vacuum CV and controlled via the coaxial (see opposite). It covers the 18, 21, 24 and 28 MHz bands.

Another magnetic loop of 250 cm in diameter, built on the same principle, allows to cover the bands 3.5, 5.3 and 7 MHz.

 

The 40m QRP station

This is a project that has taken me a long time. On the basis of a kit, the famous ILER40 MK2 from EA3GCY, to which I added some small "home" options (timing, switching and monitoring CW adjustable, direct and reflected power, Z-match tuning symmetrical/asymmetrical) as well as a DDS VFO also kit, by the same author.

The quality of the reception is excellent, the transmit also. I use it with the head-set microphone supported by the preamp-compressor built in the microphone switcher -described opposite- and the sensitif touch sideswiper key for the CW.

The s'meter bought in Bulgaria on ebay comes from an IC737 Icom, the VFO button of a TS680 Kenwood, the speaker is a "ceiling" model whose dimensions fit perfectly with the case itself found with difficulty and finally bought in China. All this to contain a Spanish kit ;-)

 

 

Telegraphy

Station

And for CW, a home made Sideswiper key : A sensitive touch key circuit (P3W cwtouchkeyer) with a small teaspoon as paddle ;-).

 

This position of the paddle allows the wrist to be placed vertically, natural position when the arm is folded. Handling in sideswiper is effected by rotation of the wrist. Interesting experience.

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