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#1
January 16th 11, 01:18 PM
posted to rec.radio.amateur.moderated
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Help identify Xtal filter
Hi all,
I have some crystal filters that I am hoping someone can help me identify. 21.4MHz, possibly 6 pole, made from 3 x 3 pin HC-49u cans. Appears to be about 15kHz wide at -3dB Marking is 03047A Any help with a data sheet or termination impedance will be most welcome. Thanks, Mark |
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#2
January 16th 11, 10:19 PM
posted to rec.radio.amateur.moderated
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Help identify Xtal filter
In article , MarkAren wrote: Hi all, I have some crystal filters that I am hoping someone can help me identify. 21.4MHz, possibly 6 pole, made from 3 x 3 pin HC-49u cans. Appears to be about 15kHz wide at -3dB Marking is 03047A Any help with a data sheet or termination impedance will be most welcome. Thanks, Mark Likely Motorola filters for their old Marine Vhf FM Modar series Radios, at 21.4 Mhz... That was the Mid IF they used, before going to 455 Khz... -- Bruce in Alaska add path before the @ for email |
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