I have terrible constant powerline noise from a pole about about 1000 ft from my small city QTH (40M through 15M). Aside from getting the power company to fix it (that could take a while), what are WSPR users doing to mitigate powerline noise from reaching their receivers, especially for the small kits and QRP setups. I know that SDR approach can help for mild cases, but what about more extreme cases?
My setup is a TS-690s with a 2.8KHz (8.33MHZ IF) filter and a 250Hz (455KHz IF) (for WSPR). The Kenwood noise blanker is very effective at reducing the powerline noise and I can spot some stations with the noise blanker on but I don't think I am getting the best SNR possible. I would like to block some of the pulses from reaching the receiver, possibly with a line-synchronous noise blanker? I tried the MFJ-1026 but it is not a viable option as I cannot put up another decent antenna for noise pickup and it seems to distort WSPR signals worse than the internal NB
What effect is the internal noise blanker or a line-synchronous noise blanker having on the WSPR signals and SNR?
What can be recommended for stand alone Transmit/Receive kits/sdr/etc that can deal with powerline noise. My preference is for analogue approaches, multiple band operation, but simplicity of setup is key.
My antenna is a homemade multi-band vertical dipole for 40M - 6M, axially fed. it should also have a fairly low angle of radiation for 17M and above average dipole gain for 30M and 20M. the bottom is 5ft off the ground and the length is 39 ft.
If anyone is interested in setting up a sked for comparing antennas at the same time, especially verticals I would be interested in comparing spots, determining antenna efficiency etc. I know comparing antennas with WSPR is trivial, but it can be useful.