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Which brings me to my next crystal filter question. I know these newer radios with the 10.7MHz crystal filters are just 4 crystals stuck in a can with a couple capacitors.
But what about these older large ones? I always assumed it was the same, but with more crystals, I had absolutely no idea there was tuning transformers in them until I removed the shrink wrap yesterday. Do the larger metal can ones also have these transformers? Is there a thread on these three filter tuning cans anywhere???

[QUOTE="brandon7861, post: 827850, member: 53724"] Which brings me to my next crystal filter question. I know these newer radios with the 10.7MHz crystal filters are just 4 crystals stuck in a can with a couple capacitors. But what about these older large ones? I always assumed it was the same, but with more crystals, I had absolutely no idea there was tuning transformers in them until I removed the shrink wrap yesterday. Do the larger metal can ones also have these transformers? Is there a thread on these three filter tuning cans anywhere??? [/QUOTE]

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