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About 8 months ago, I purchased one of these radios, the thick one with 1.0f firmware that has several problems. This one has later 1.1b which fixed problems with the older one. I've done quite a bit of testing, so far, so good. I made a ferrite antenna for AM BCB. It consists of a coil on the ferrite & a tuning capacitor. This won't work on a 50 Ohm input. Fortunately, this radio has a hardware switch to get a Hi-Z input. For higher frequencies, the included telescoping whip works well. The sound is amazing for such a small radio, thanks to the passive radiator speaker.
just received the radio today superfast delivery,all I can say is excellent build quality also a nice looking radio,still getting my head around all the settings this radio has,and as I'm new to sdr radio will take a few days to appreciate what this radio is capable off, now off to watch YouTube videos to learn how to use radio properly.