I have a couple of aerials, an 80m dipole
and a random long wire about 150 feet long.
I use a matching unun with the long wire.
The dipole works fine as a receiving aerial on any band and gives me the least
local interference due to the feed point being very high and the ends clear of
habitation.
I find all digital radios are inherently very
noisy compared with old valve superhets.
I suppose most out there haven’t
listened to a proper receiver with proper RF tuning and without a PLL.
There’s a challenge…
Allan G3PIY
From:
main@SDR-Radio.groups.io [mailto:main@SDR-Radio.groups.io] On Behalf Of jdow Sent: 23 December 2021 15:01 To: main@SDR-Radio.groups.io Subject: Re: [SDR-Radio] NDB -
Airspy HF+ DIscovery versus Hermes Lite 2
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.