[Milsurplus] DC-34 BC-669 crystals

[Hubert Miller]

Someone remind me what the BC-669 IF is. I found around 20 crystals for it. I assume that the receiver crystals can be as well used in the transmitter
on their actual frequency. I ask because this would make use on some 80 meter AM freqs possible, as well as other way around, it gives some 80M
CW freqs. I am a little reluctant to give up the 'good frequency' crystals even tho I have no BC-669.
I do have a couple DC-34 to HC-6 adapters. I don't know if that is useful. Maybe only to make up adapters to DC-34.
I am astonished at the variety of crystal manufacturers represented just in this small lot of crystals.
-Hue
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