[Hallicrafters] Hallicrafters SX-146 Reciever CW filter

[Lee]

Could I wind a toroidal transformer to change the impedance on the input 
and output of an Icom low impedance filter to match the in and out 
impedance of the SX-146?  I suspect so, but then I don't know the 
impedance of the radio or Icom filter.  Anyone knowing ball park 
starting turns ratio on doing this?

Lee, w0vt
On 6/14/2017 8:30 PM, Lee wrote:
> I am going to totally restore my SX-146 receiver.  It has no accessory 
> filters.  (CW and AM)  The IF is 9 Mhz.  Could I use an Icom FL-100 
> crystal filter in my SX-146?  The Icom filter does have a 9Mhz center 
> frequency but it was made for solid state radios.  I'm worried about 
> comparability.  Same goes for load impedance on both sides of the 
> filter.  I'm no expert on this subject.  Anyone on here with any 
> knowledge on the subject?
> Lee, w0vt