QSO's were easily had on all 5 bands. Yep, 5. The radio performs very well on 60 meters in addition to the four for which it's advertised.
I adjusted my variable supply for exactly 12.0 volts and made the following measurements:
- 20m - 530mA - 3.5 watts out
- 30m - 550mA - 4.0 watts out
- 40m - 560mA - 4.25 watts out
- 60m = 690mA - 5.5 watts out
- 80m - 670mA - 5.3 watts out
Ryan W7RLF noted two issues with his QDX, and mine is doing the same:
1) Sometimes when switching bands (via WSJT), the rig initially is neither transmitting or receiving. It seems to go into a dormant state. This is easily fixed by clicking on the TUNE button in WSJT to transmit for a second, then clicking again to go back to receive. Now the QDX will begin receiving and all is well.
2) Sometimes when changing bands or modes (ie, FT8 to WSPR) the rig thinks it's receiving but the waterfall of WSJT contains only hash marks. This is remedied the same way as above.
Neither of these things happen often - they are infrequent and easily fixed.
The receiver is amazing - I'm copying many European stations on 40, 60 and 80 meters, VK and Indonesia on 30 meters.