I just bought a Software Defined Radio USB dongle and an up converter for HF frequencies. It is a nice toy but the tiny whip antenna that comes with it is obviously limited at lower frequencies so I was thinking of making an active antenna. There are lots of active antenna designs on the web but my question is am I better off making separate HF and VHF antennas or is a wideband one, such as this going to work?
I know next to nothing about active antennas so any thoughts and pointers appreciated
Here's the wideband circuit diagram to save you clicking through
I know next to nothing about active antennas so any thoughts and pointers appreciated
Here's the wideband circuit diagram to save you clicking through