OK! Now that I have recieve working well , I want to try some mods on it,
I am trying to do the NPC mod and I am stumped on Step 6. what wire are they talking about here is a picture, is it the green one that gors to TP7, or violet one that goes to TP8 or one of the yellow coated oned off the driver or final?
1. Remove TR32 Done
2. Jumper out R123. Done
3. Add a 10 uF 25 or higher volt electrolytic cap to the following
spots: Attach the positive leg to pin 9 of IC4, and attach the
negative leg to the junction of R121/D62/R204.
DONE
4. Set the driver bias to 50 mA. Driver VR8 30mA Test at TP8 DONE
5. Set the final bias to 100 mA. Final VR9 50mA Test at TP7 DONE
6. Solder the end of the final bias wire that is furthest from NEED HELP?
the final transistor to the cathode (banded) end of D60.
7. Set the dead-key power to 1.5 watts using VR6.
8. Tune the RF amp chain coils (L36 and L26 through L29) for
maximum peak (modulated) output power.
9. Double check the dead-key power. If it's higher than 2
watts, use VR6 to set it to 1.5 to 2 watts.
The maximum average
power should be 10 to 12 watts. And the maximum peak power should
be around 25 watts.
I am trying to do the NPC mod and I am stumped on Step 6. what wire are they talking about here is a picture, is it the green one that gors to TP7, or violet one that goes to TP8 or one of the yellow coated oned off the driver or final?
1. Remove TR32 Done
2. Jumper out R123. Done
3. Add a 10 uF 25 or higher volt electrolytic cap to the following
spots: Attach the positive leg to pin 9 of IC4, and attach the
negative leg to the junction of R121/D62/R204.
DONE
4. Set the driver bias to 50 mA. Driver VR8 30mA Test at TP8 DONE
5. Set the final bias to 100 mA. Final VR9 50mA Test at TP7 DONE
6. Solder the end of the final bias wire that is furthest from NEED HELP?
the final transistor to the cathode (banded) end of D60.
7. Set the dead-key power to 1.5 watts using VR6.
8. Tune the RF amp chain coils (L36 and L26 through L29) for
maximum peak (modulated) output power.
9. Double check the dead-key power. If it's higher than 2
watts, use VR6 to set it to 1.5 to 2 watts.
The maximum average
power should be 10 to 12 watts. And the maximum peak power should
be around 25 watts.
