For sale: 4 Collins mechanical filters used in a Collins 75A-4 receiver (all 9 pin) asking 400$ for the 4 or sell separately each for 100$. Were removed from my 75A-4 substituted by the Dave Curry products
- Two of F455 J 05 (526 9154 00) – one is 7102, the other 10R2 – 500 Hz
- Dave Curry long wave products 9 KHz AM filter
- 455 J 31 (526 9089 00) 8N1 (3.1 KHz)
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