The following may be of interest for a very small percentage of my readers. However, there was a discussion on a Winradio refelctor on this issue, a debate coloured by many assumptions and few facts. I never did bother to measure the G31's LF sensitivity, but today I did. With the usual parameters (AM mode, 6 kHz bandwidth, a 400 Hz tone and 30 % modulation), I measured:
500 kHz: -104 dBm
400 kHz: -104 dBm
300 kHz: -102 dBm
200 kHz: -102 dBm
150 kHz: -102 dBm
100 kHz: -100 dBm
I'd say that's fairly good. The G31 doesn't have a built-in preamp, like many conventional receivers have, so a direct comparison may not be fair unless an external 10 dB Norton push-pull preamp is placed in front of it. If so, the G31 will play games with anyone.
2 comments:
Interesting set of LF results - can you comment on how this could compare with the SDR-IQ or Perseus ?
Many thanks - RH/G0TKZ
No, I haven' measured them on LF, but from NDB DX-ers I know that they perform well.
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