Hi,
Can anyone help me? I seem to have fried the MOSFET that drives the
UHF band (265 - 600MHz)receive circuit - I accidently transmited on 446Mhz
with high power on my extended Tx modded HT. My TH-F7 is fine on the LF
bands and on VHF but it is now very deaf on UHF - 430MHz. I have read
elsewhere that the transistor can be replaced with a CF739 and I have
managed to obtain a couple of these devices. My problem is - how do I locate
this transistor?
Looking at the schematic it looks like Q62 is the device I need to
change. Can anyone show me on a diagram or photo where this
transistor is on the PCB? The TH-F6 and TH-F7 are basically the same so
info for the TH-F6 will probably help me.
Many thanks in advance - I'm sure somebody must have this info but I
have not managed to find it by myself.
73 de Stuart G3SNA