This is a project to design and build a Guanella 1:1 (current) balun suited for up to 100W on HF with wire antennas and an ATU. For use with a tuner, the most important design criteria are: high voltage withstand; high common mode impedance; power handling. Last update: 28th January, 2016, 7:09 AM
Third part in the series.. Design / build project: Guanella 1:1 ‘tuner balun’ for HF – #1 Design / build project: Guanella 1:1 ‘tuner balun’ for HF – #2 Design / build project: Guanella 1:1 ‘tuner balun for HF’ – #3 Design / build project: Guanella 1:1 ‘tuner balun for HF’ – #4 Design … Continue reading Design / build project: Guanella 1:1 ‘tuner balun for HF’ – #3
In Common mode current and coaxial feed lines, I mentioned that common mode current is easily measured, Last update: 18th October, 2020, 9:50 AM
An extended test comparing signals received in Florida from three nearby stations in Australia was conducted 21/12/13, a low elevation path of more than 14,000km. The A/B comparisons were performed on statistics gathered from the W4HBK grabber, in this case measurements of the noise and each of two transmissions of 1min of steady carrier every … Continue reading A/B comparison test on 40m