[AMRadio] Viking II Audio Mod Question

[Freeberg, Scott (STP)]

Hi Bill,  I already fired it up and the audio circuit didn't work.  I just
traced it out last night so I could start troubleshooting tonight.   I was
curious if the mod sounded familar to anyone so I could get some history on
it.  I understand there were all sorts of audio mods to hot rod a weak
Viking II audio chain.  Thanks.

73,  Scott WA9WFA