TS450S.7

Here is a good mod for the set-up TS-450S and PK232. I did it
and worked very good for me:

  TS450S - PK232

   If you are having problems when you have your TS450S connected to
   the PK232 you can try this mod to supply the lack of ground on the
   mike board on you HF rig:

   1 - On the 13pin DIN plug (one that goes to ACC2 connector),
       disconnect the wire that goes to pin 11.

   2 - Connect pin 2 of the same 13pin plug to pin 4 of the scope jack
       behind the PK232. 
       
       That is it!!!

       You can do that using a separate wire for this
       purpose or use the wire that use to be pin 11. So now, solder this
       wire that use to be pin 11 to pin 2 of the 13 pin DIN connector.
       Then at the other end of the cable (infamous 5 pin), remove the
       wire that use to be connected to pin 11 and make a little
       extension to be able to reach the SCOPE jack. Finish the whole
       thing with a a 5 pin DIN plug for the SCOPE jack and you are all set.

       It worked nice for me. If you still want more information about this
       mod, you can call AEA and ask.
       
       Have fun, Rodrigo N1PXB.