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THE RECEIVER IS AN SDR THAT USES AN INTERMEDIATE FREQUENCY FOR THE FINAL
EXTRACTION OF THE TONES FIRST IN DIGITAL FORM, THEN FED AS AUDIO TO A BUILT
IN SOUND CARD, AND FINALLY SENT VIA USB TO A COMPUTER.  ANECDOTALLY, THE
RECEIVER PASSBAND IS NEARLY DEVOID OF NOISE.  IN VERY UNSCIENTIFIC TERMS,
THE RADIO DOESNT SEEM TO HEAR MUCH OF ANYTHING ASIDE FROM THE INTENDED
SIGNALS.  THIS MAY, IN PART, HAVE TO DO WITH PORTABLE OPERATIONS, BUT EVEN
STILL I FIND THAT, COMPARED TO OTHER QRP FT4/ FT8 SETUPS I HAVE USED, THE
SIGNAL TO NOISE RATIO APPEARS TO BE MUCH BETTER WITH THE QDX.  COMPARED TO
OTHER QRP SETUPS, MY EXPERIENCE IS THAT THE QDX HEARS WELL ENOUGH THAT
THERE IS BIGGER SPREAD IN SNR READINGS, AND BECAUSE THE QDX HEARS SO WELL,
A REPLY WITH THE OTHER STATION BEING UNABLE TO HEAR IT SEEMS TO BE MORE
FREQUENT THAN WITH OTHER RADIOS I HAVE USED.  THE QDX DOES AN EXCELLENT JOB
OF LEVERAGING THE MODES AVAILABLE IN WSJT X AND SEVERAL OTHER POPULAR
MODES.  CONCLUSION OVERALL, THE QDX IS AN EXCELLENT TRANSCEIVER.  IT IS
COMPACT, EASY TO USE, AND NEARLY FOOLPROOF.  I HIGHLY RECOMMEND PURCHASING
THE CASE UNLESS YOU ARE HIGHLY SKILLED AT FABRICATING YOUR OWN ENCLOSURES,
OR IF YOU HAVE A 3D PRINTER, AS SOME TEMPLATES ARE AVAILABLE ONLINE.  THE
RADIO IS A WORTHWHILE ADDITION TO MY GO BOX FOR PORTABLE OPERATIONS, BUT IT
WOULD FUNCTION EQUALLY WELL AS A DEDICATED RADIO IN THE SHACK.  SIGNAL
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