[Elecraft] K3S noise blanker: FMOP OTHR

[Richard Lamont]

Hi all,

Has anyone had any success using the K3S noise blanker to get rid of the
new-ish FM-on-pulse types of over-the-horizon radar? I've tried various
settings but nothing seems to make any discernable difference.

There seem to be two main systems, both Russian:

'Sunflower', a surface-wave OTHR, which typically occupies about 40 kHz
of bandwidth on the lower HF bands and puts out 43 pulses/sec and has
been causing a lot of interference on 3.5 and 5 MHz.

'Container', an ionospheric OTHR, which (at present) occupies about 14
kHz of bandwidth, mainly on 14 MHz and puts out 40 pulses/sec and has
spent the last few days centred on 14142, 14228 and 14332 kHz.

73,
Richard G4DYA