Texas Star 350 DX HDV CW Transmitter to Amplifier modification before 2018:

1. Remove yellow 2200K cap of the oscillator board from the PCB
2. Remove red wire of oscillator board from RF choke
3.Remove green wire of oscillator board and attached 33pf cap

4. Solder the leg of 15 or 18pf cap to input trace on PCB
5. Remove black wire of oscillator board from keying jack
6. Remove oscillator board
7. Locate jumper wire attached to backside of red switch
8. Unsolder the ground end of jumper wire closest to the relay
9. Solder this end to open trace behind green switch
10. Remove wire from outer lug of blue pot and solder to other outer lug
11. Remove 10-ohm resistor piggy-backed to 15K resistor located next to the white sand block resistor and RF choke

https://www.worldwidedx.com/threads/texas-star-350dx-hdv-conversion.258552/

http://xbones_antennas.tripod.com/id16.html