Search found 3 matches

by Tom Atkinson
Sat Jan 19, 2019 3:44 am
Forum: SDR Antennas
Topic: Impedance matching - RSP1A
Replies: 2
Views: 3462

Impedance matching - RSP1A

What is everybody here doing for impedance matching between antenna and RSP1A? My antenna is nominally 300 ohms and I am using trial and error to find the optimal transformer. Feedline is 300 ohm twin lead. Antenna is a "horizontal loop" (actually in triangle shape) of 75 metre perimeter. Modelling ...
by Tom Atkinson
Sun Dec 30, 2018 12:35 pm
Forum: SDR Antennas
Topic: Mains noise
Replies: 13
Views: 16203

Re: Mains noise

Really hope your eye is ok, Phil. Myself and many others (I'm sure) are waiting with bated breath for the next installments in this series. Really enjoying your writing, your humour, your expertise and experience. And really appreciating the graphics production effort you have gone to so far. I got ...
by Tom Atkinson
Thu Dec 27, 2018 1:38 pm
Forum: SDR Antennas
Topic: simple but good wire antenna
Replies: 10
Views: 42086

Re: simple but good wire antenna

Hi Phil, Thanks for that really useful information. I will be rushing out, first thing tomorrow morning, to get the bits I need to make my own triangular "loop"! I got an RSP1A for Christmas. I knew it was coming, so spent the week before building an inverted dipole. Have gone to some trouble ground...