TenTec Scout/Argo-556 Faster QSK Modification
Some of the Ten Tec Scout and Argo-556 radios have fairly slow
QSK as shipped from the factory. There is a relatively easy way
to make it much faster, allowing full break-in at 50+ wpm. You
don't have to take the radio apart, just remove the top cover.
Grant K7GT received this information from the Ten Tec factory.
The fix is to change a resistor, R37 , now 1k, to a 2.2k, on
the RCVR/Control board, 81644. Here's the description of how to
R37 is mounted vertically on the RCVR/Control board just to the
front of the diode (also mounted vertically) that is almost
touching the right-front corner of connector 'A'. The front of
the radio is facing forward.
Cut the looped-over lead of R37 and solder a 1.2k resistor in
series with the cut lead on the 1k part. Be QUICK when soldering
the new resistor to the lead that is going into the board, or you
will melt the solder holding it in the hole and it may drop
through the board. Then you WILL have to take a lot more of
the radio apart to solder in the added resistor!!!! Tin the
leads of the 1.2k resistor before soldering them to the 1K
resistor leads and you will need less heat.
73 -- Glenn AE0Q/V31RY