These images are of my Kenwood TH-D7 HT
If you look carefully above where the copper strip joins the PCB you will see some aftermarket modifications. These are actually two 1N914 diodes surface mounted to the PCB. I removed the that was there and surface mounted two new diodes. This gave me extended transmit and receive… For those saying that this might be illegal, I now have full transmit in the 70 CM band – something the TH-D7A does not normally have.