[Premium-Rx] Collins 51J4 filter needed

[premiumreceiver]

Hello list. 

While this may be slightly off the topic of modern premium receivers, I have aquired another old receiver to add to the stable. It's a late grey Collins 51J4, supposed to have come from the Collins lab.

I'm looking for either a 9 kHz filter (or other wide BW) OR a bad filter of any BW. The defective one would be used for the housing.

Anyone have something in their junkbox? Please contact me off list.....

Fred   k2dx
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