Oricom UHF050 uhf cb schematic?

[zzsteve]

Hi,
Have pulled the reverse polarity protection diode and receiver comes to life, but no transmit. Does a schematic or manual exist?
Anybody had a go at this unit before?
TIA
Steve

[GEuser]

I doubt there would be a schemmy , too cheap and too new a radio .

If you have another uhf pull the final or disconnect the drive to the pa transistor and see if one can rx it on the other radio , then it might be the pa transistor or module if one can rx a signal even if it measures ok with a DMM or AMM .

[Flashman]

Hi, do you still want a schematic? Pressing the PTT sends a signal to the CPU which in turn puts a low (TxEnable) on the base of Q4. This in turn switches Q201 on and also Q35 the main DC switch for the PA.

[wasedadoc]

@Flashman

The OP last logged in here 8 years ago.