[R-390] R390A 4kc filter status

[Frank Hughes]

Hi,
Thanks for all the helpful advice and comments.
Had time today to set up a test.
Results indicate I am old and deaf.

The 4kc filter is working, just down a few db from years past, as is my
hearing.

A suggested, I'll just turn up the gain to compensate for the losses,
electrical and anatomical!

http://i180.photobucket.com/albums/x257/fish1_07/R-390/r390a%204kc%20filter%20test_zpsdxj9czjz.jpg



73
Frank
KJ4OLL