{Collins} 51J-4 filters



Hi Folks,

I was wondering if anyone knew of any 500KHz filters for the 51J-4 other than the 3 stock filters that they already have?  I'd love to find a filter that is narrower than the 1 KHz filter that is in the radio.  I've searched and haven't been able to come with anything.  It's probably because there isn't, but I thought I'd throw out the question.  

73,
Mike WB0SND





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