You have a really small antenna, perhaps? If not I
suspect the Andrus is not setup as nicely as it could be. With a
low loss antenna system below even 30 MHz and especially under 10
MHz it is VERY difficult to make a radio too insensitive to
receive anything that is out there without reducing RF input gain
by 10 dB to even 30 dB due to purely natural noise sources.
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On 20211223 06:46:56, Allan Isaacs
overhauling a WW2 R1155
and as I tuned across the long wave band a Polish
station close to Radio 4 came
in at a good S8 about mid day.
I checked on my
Andrus SDR with the same
aerial and it wasn’t more than a tiny spike with no
Admittedly the R1155
has been modified
with a 6AK5 RF stage…
On Thu, Dec 23, 2021 at 12:34 PM,
As a LF enthusiast (chasing NDB
for more than 20 years), I can tell the
Discovery is one of the most sensitive receiver I have
I don't think this shows any issue with the HF+
Discovery, just that the Hermes
Lite 2 is a quite astonishing bit of kit for the money.
Actually regardless of
the cost. Punches way above its weight. I did always
think so but this has just
confirmed it for me. Unless I have a sub-par HF+? Wonder
if you managed to
watch my video recordings of the NDB?
Unfortunately I was not able to listen for Grimeton test
Listening now but nothing heard so I guess too late to
the game. I will be sure
not to miss the main TX tomorrow morning.