On another note the radio transmits on the factory frequencies 469.500 MHz but when programmed to 447.0625 MHz it will not transmit.
The spec on the radio it should work from 403 MHz- 470 MHz.
I think the two of us that responded know plenty about how radios work and how to troubleshoot them. If you take your car to the mechanic do you just tell him it's not running right and leave the keys and walk away.
Now that we know it transmits on at least one frequency that takes the antenna out of the setup or at least moves it to the bottom of the list. Which was not in the original post (no transmit) and is important to prioritize suggestions. The smallest detail is important.
Power supply connection/cable is still a possibility as the factory frequency could be done at a lower power level than your programmed frequency. With a poor power connection low power setting might work and higher setting drop the voltage below operation specification and when that happens... well anything could result.
Then maybe the programming of the 447.0625 might have been done incorrectly, but usually you are protected from corrupting the code plug and writing bad data.
Simple three block setup. 100 items have to be correct in each one and one bad setting/configuration/item in any one of them can keep you off the air.
Good Luck!