[Elecraft] KX3 AM breakthrough (&KX2)

[Philip Anderson]

Many thanks for all the thoughts and information people have offered on 
this issue! If in addition to the extra high pass filtering the KX2 has 
RX SHIFT permanently enabled, that certainly explains why it's immune to 
AM breakthrough.

It sounds like it might be worth trying a 3Mhz low pass filter to sort 
out 80m and above and accepting that RX SHIFT will need to be used on 
top band (which I rarely use anyway). Because the local broadcast 
station is quite close to top band (around 1.6Mhz), I doubt a high pass 
filter that allowed top band through would reject the broadcast 
transmitter sufficiently to sort the problem.

It seems like there might be a few commercial products which could work 
- or I could just get out my soldering iron!

Phil G4PWO