Post #607898

2026-03-02 23:06 UTC

Ok, so active receive antennas can sometimes work better than a &quot;conventional&quot; antenna. Got it. But could you therefore use a pair of active receive antennas to null out noise?

Replies (3)

@g7eix@mastodon.radio 2026-03-02 23:22

@AG7GM As I recall the Flex Radio 6700 had 2 x RX ports and they implemented diversity for this very thing. My recollection may of course be wrong, but I am sure it was documented well in the Flex Community. I will now of course do a search to confirm if my memory is good or bad after commenting..... ;-)

Open ##1066299
@g7vkq@mastodon.radio 2026-03-02 23:37

@AG7GM I know of at least one local amateur with a DXE NCC2 and two active loops (based on LZ1AQ amps) connected to it…seems to work well for him (https://x.com/rfconsultantuk/status/1923387263276261817?s=46&t=F7aJpT3hQnA59qZz8khb2A)

Open ##1066301
@df4or@radiosocial.de 2026-03-03 00:22

@AG7GM Yes, you can, provided that the two antennas are mounted at different locations, some meters apart. One closer to the suspected noise source than the other. Then use a phase shifter lead ke the DXR NCC.

Open ##1066302