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Just restored one today (40-180 code 121), had a bad first IF coil, primary was open and ended up hiding a new style one in the old can.
Here is a picture of the coil, the tan thing that looks like a capacitor. I measured it in circuit and came up with approximatly 8 uH, had to use long leads to get at it so the value is only close, after looking at the circuit it should not be critical 5 to 15 uH should work.
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