WBR Regenerative 40m Receiver This simple and neat project comes from a excellent article of Dan Wissell, N1BYT, published in QST, August 2001, p.34-37. In a nut shell, the design of this receiver takes the advantages of a regenerative receiver (simplicity, sensitivity) and try to adress the issues which are antenna radiation, microphonics and hand capacity effects. The design uses… Read More
Remote antenna tuner If you have already read my page describing my operating conditions, you might have understand that I regularly tune an antenna tuner at the base of a random wire with cointerpoise. Even if there are ways to do it, it is not convenient to do when the transceiver and the antenna tuner are not located in the… Read More
Home-made CW paddle Initially, I was looking for a small iambic paddle for CW operation in portable and also in mobile (well, not while driving !). I finally found what seemed to be, at least from my point of view, the ideal paddle on G4ZPY web site: the « Miniature 3 in 1 iambic twin paddle key ». This paddle seemed… Read More
Portable Z-match tuner For portable operations, I was looking for a multiband compact Tuner able to tune both symetrical and coaxial feeders and that would be easy to build. After many searchs on the Web, I finally found few Web pages about the Z-match design (see my « Links » page for some usefull sites and for the schematics). The… Read More
QRP Z-Match Tuner Being very satisfied by the use of my first Z-match antenna tuner described above, I wanted a more compact one to use with my 5 watts FT-817 transceiver. Looking again on the web gave me useful information about such design, the solution being to use small variable capacitors that can be easily found in old… Read More