Well the thread gets more and more confusing?. You've never really explained what you're really trying to do?.
Presumably, you're now talking about trying to program a PIC with a 'serial' programmer, using a USB to serial converter from a laptop USB port?.
This is rather different to anything actually mentioned!.
The thing you haven't mentioned is what PIC programmer you're using (or even if you're using one at all?) - this is the single most important thing to know!. Your suggestions of an 'amplifier' are probably totally irrelevent!.
Presumably, you're now talking about trying to program a PIC with a 'serial' programmer, using a USB to serial converter from a laptop USB port?.
This is rather different to anything actually mentioned!.
The thing you haven't mentioned is what PIC programmer you're using (or even if you're using one at all?) - this is the single most important thing to know!. Your suggestions of an 'amplifier' are probably totally irrelevent!.