"YK" wrote in message
oups.com...
Anybody has a center frequency of 9 MHZ with 6- to 8 KHZ bandwidth xtal
filters?
I am tryig to use it for Hallicrafters SX146, the original filter is
impossible to find but any 9 MHZ filter should be fine as the inut and
output impedance should not be too critical.
Thanks for reading.

If you are into homebrewing, you can purchase 9MHz crystals inexpensively,
measure the characteristics and design your own. Did this for my homebrew
communications RX and they came out very well.

Dale W4OP