Realistic htx-100 service manual

However, this is NOT the reason for the "extra" components because I can see that their locations are printed on the pcb. Bill K4GDR. K4GDR , Aug 24, Non-working is a very broad description. What does the HTX do, or not do? Not aware of any differences between HTX units. The schematic should be helpful in finding your way around but if it's that much different then perhaps someone put a different board into the chassis.

Check the part number against the one Radio Shack shows should be in there. Check revision numbers and compare them. Hope this helps 73 Gary. KO6WB , Aug 24, Gary, Thanks for your suggestions. Regarding "non-working" -- Screen displays frequency, mode, etc.

It receives okay. No transmit. My first suspect part was the final transistor. Lift and bend the wiper so that is permanently disconnected from the track. This should increase the RF power output to around 35 watts but you will now not be able to trim the power output. The Low power trim will function as before. To increase the average depth of modulation- Remove the top cover of the radio and with the display facing you and the radio upright locate IC3 MJM near the bottom right-hand corner of the main large board.

Just to the right of this IC locate c75 56 pf and remove it. This will increase the gain of the microphone Preamp considerably but without overmodulation. If you find the compression excessive i. This simple mod will increase the audio response in TX in the 2 to 2.

Locate a 5. Solder a 0. And do not transmit outside of legal bands! DSP schematic and technical information. DX Owners manual. DX Service manual. DXA Manual. DXA Service manual. DXB Service manual. DX Manual. DX Service manual 2nd edition. DX Owners Manual. DX Schematic. DX Band Portable Receiver. DX Detailed parts list. DX Manual Word format. DX Schematic full A3 scan. DX Service Manual. DX Shortwave Receiver. DX Operating and Service instructions. External Speaker.

FRS Manual. HTA Manual and schematic. HTX Owners manual. HTX Service manual. HTX Manual. HTX Oweners manual. HTX manual. HTX User manual. HTX Owners Manual. HTX Instruction manual. HTX Owners manual and schematic. In-Ear Phone Communications Headset. MTX Manual. PRO Communications Headset. PRO Manual.