[Elecraft] Roofing Filters

[Fred Jensen]

Have never experienced AGC pumping with 500 Hz filter, even in DX 
contests.  Been playing around in FD as 1D, and strong signals are 
stacked so close that, for the first time, with the DSP at 150 Hz and 
100 Hz, strong adjacent signals are activating the HW AGC.  I can 
separate the signals with the DSP which is really surprising.  I know 
about "brick wall filters," now I'm using one. :-)

20 is still wide open here on the western frontier at 0245 UTC despite 
K=4 and rising from the M.8 flare a couple days ago.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 50th Running of the Cal QSO Party 3-4 Oct 2015
- www.cqp.org