Sunday, December 23, 2012
Thursday, December 13, 2012
Sunday, December 9, 2012
Monday, December 3, 2012
Thursday, November 29, 2012
Monday, November 26, 2012
434 MHz simple converter, with SA 612
Gera zinia ta, kad surinkus teisingai, konverteris veikia is karto. Idealu 144 MHz , ne 432 MHz. Dar zemesniuose diapazonuose SA612 veiks puikiai.
Saturday, November 24, 2012
Wednesday, November 21, 2012
Tuesday, October 23, 2012
Fitsat 1, NIWAKA with D snake antenna
Wednesday, October 3, 2012
Saturday, September 22, 2012
Thursday, August 30, 2012
Monday, August 27, 2012
Sunday, August 26, 2012
Sunday, August 19, 2012
Thursday, August 2, 2012
Wednesday, July 18, 2012
14 MHz Magloop by LY3H
I was forced to use magloop (also known as STL - small transmitting loop) because I don't have permission to build antennas on my roof.
For loop I use cheap heating pipes. Any magloop builder inevitably will have to solve high quality/voltage capacitor problem. Since I operate only CW I decided to try fixed capacitor made from coaxial cable (first two pictures). This was working solution but it's hard to make it waterproof (it's very important!)
Then I tried to make capacitor from the heat pipe too. This is very good solution - it's easy to make adjustments, it's easy to make it waterproof with heat shrink!
I made already quite a few QSOs with the 5W transceiver published earlier, even with some JA stations.
The only concern so far is overall temperature stability - I will report my findings later here.
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