It could also be the 4 pole stock Argosy filter (9 MHz).
Vin Legare wrote:
> Jim, Appears that you have a 4 pole ladder filter for the Corsair I.. This
> the stock filter used in the Corsair and was replaced with a 8 crystal ladder
> filter in the Corsair II. Many folks replaced the 4 pole with the 8 pole on
> Corsair I. I think there was a thread on this about 2 years ago.
> Vin W1TUJ
> > > At this weekend's Rochester (NH) hamfair, I found what appears to be a
> > > spanking new four-pole Ten-Tec IF ladder filter. Can anyone on the thread
> > > please help me identify it?
> > >
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