TenTec Scout/Argo\_556 Faster QSK Modification


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 find R37:

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