I recently acquired a "Made In The Malaysia" 148GTL. Upon inspecting it today, I found a 68 ohm resistor bridging the base of TR-37 to ground. I believe the original part was supposed to be a 4700 ohm (R226).
Is this somebody's idea of "strapping" it for more power? Maybe a swing kit? Or is this one of those "Manufacturers Discretion per build" thing that happens during assembly and testing?
Schematic is here.
http://www.cbtricks.com/radios/rci/tr_296gk_dx/graphics/tr_296gk_dx_sm_sch.pdf
TR-37 is at the lower left of the schematic near the final transistor TR-36.
My inclination is to remove the 68 ohm resistor and install the 4700ohm in its place per the schematic as I am not able to get the final Bias set below 70Ma.
This small "deviation" is not all of the problems with this unit. Cracked tuning slugs, worn out SO-239, bad RF Gain pot, bad CT2 trimmer, broken plastic mount screws for Audio IC and Balanced Modulator IC.....................
All help is appreciated.
73's
David
Is this somebody's idea of "strapping" it for more power? Maybe a swing kit? Or is this one of those "Manufacturers Discretion per build" thing that happens during assembly and testing?
Schematic is here.
http://www.cbtricks.com/radios/rci/tr_296gk_dx/graphics/tr_296gk_dx_sm_sch.pdf
TR-37 is at the lower left of the schematic near the final transistor TR-36.
My inclination is to remove the 68 ohm resistor and install the 4700ohm in its place per the schematic as I am not able to get the final Bias set below 70Ma.
This small "deviation" is not all of the problems with this unit. Cracked tuning slugs, worn out SO-239, bad RF Gain pot, bad CT2 trimmer, broken plastic mount screws for Audio IC and Balanced Modulator IC.....................
All help is appreciated.
73's
David