On Sat, Sep 24, 2022 at 09:45 AM, Dirk wrote:
Based on my experience using the original AirSpy Youloop with 1:1 balun and Nooelec Lana HF with SDRRSP1A or without LNA the antenna works well in MW only.
With Youloop, without any LNA and with Airspy HF+ Discovery the reception is very good from VLF up to the lower VHF range. But I never tried a 4:1 or 8:1 balun instead of the Youloop's built in balun.
As you are probably aware, I'm not a great fan of the Youloop, but as an experiment you could try a single unscreened loop of wire, with the same circumference as the Youloop, but connected between the inner pins of the balun / loop connectors on the 1:1 balun. You could also try a coaxial loop connected to the 1:1 balun, but ensure you split the outer screen connection at the loop midpoint.
See what differences you observe between the various configurations, and make up your own mind about which works the best for you and the range of frequencies you are interested in.
Regards,
Martin
