[Lowfer] WM in EN90xn on FT-817

[Michael Sapp]

Mike & All:  Lower temps have WM coming in well in daylight today.  Setup 
was my NW EWE antenna to a 9th order Butterworth LPF on
the input of a 2N3904, a VE7BPO 530 kHz  NDB LPF on output of the 2N3904 
preamp direct to the FT-817 on 185.30 kHz dial frequency, no
rx converter used.

https://www.dropbox.com/s/x8lv9q1em2kkt4i/IMG_1055.JPG?dl=0

https://www.dropbox.com/s/tr75txeml6u6zrg/IMG_1058.JPG?dl=0

QRSS60 Capture by photo showing about 5dB above peak noise

https://www.dropbox.com/s/e2gtuik93v718fr/IMG_1061.JPG?dl=0

QRSS screen capture but with a "whoops" at the right side where I bumped the 
dial scale trying to get the pointer in place
in the prior image...

https://www.dropbox.com/s/vitxa14ozihd3s5/WMF2F817.JPG?dl=0


And a QRSS30 image that was done into sundown time frame with day/night 
transition fade...

https://www.dropbox.com/s/dauecs7fhx8vnc8/capt00027.jpg?dl=0


At this point I am fairly confident the FT-817 can make for a reasonable LF 
receiver given how it responds to

a preamp with a 5dB range NF.   Time for me to build a 2dB NF LF preamp and 
see what difference is noted.  My optimized
MF/LF converter is likely 4~5 dB better than the FT-817 in sensitivity. But 
an LPF+preamp into the FT-817 appears to be not all that bad
of a receiving setup....

73, Mike wa3tts