{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.  


This archive was generated by a fusion of Pipermail (Mailman edition) and MHonArc.