In article ,
Jim Lesurf wrote:
My early FM3 caused real problems when recording to my A77. Had to fit
a filter to it.

I haven't analysed the filter but it doesn't have an obvious 19k 'trap'.
Just looks like a standard 3rd order LC design for a low pass. I'd
expect the 1310 to leak fair amounts of 19k, etc. That's why the 600s
used a Toko filter, and perhaps why the FM4 does as well!


ISTR it being said the recorder should have the filtering - perhaps
switchable - rather than restricting the tuner audio output? For say mono?

--
*A clear conscience is usually the sign of a bad memory *

Dave Plowman London SW
To e-mail, change noise into sound.