[R-390] looking for 51J4 original filter 4 or 6 KC

[Matt Parkinson]

Hi I am looking for an original 4or 6 KC mechanical filter for a 51J4 is
there one out there Simi cheap and working.
I know I can buy a new one for 200.00 plus but was hopping to get one
cheaper and original.
I have one that is not original and working but the circuit has been
modified for this filter and is causing  the AVC or should I say agc circuit
not to work at all I think it has been disconnected to accommodate this
filter.
Is there something cheaper that would work and fit into the socket made for
this.
I believe that this filter is a 500kc I.F so the one for the R-390a won�t
help at all here.
Any help would be appreciated. I am just trying to get this working for
another ham who doesn�t really doesn�t have the skills to fix this at this
time.
Thanks Matt Parkinson KE6UOS


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