Standard C510 mods to open up the TX.
The photo below shows the configuration of the radio to allow wideband TX
After the modification, the coverage of the Standard C510 will vary from one radio to another slightly. But as a general guide line, please see below the coverage of my radio after the mod.
Display Reads RX in lock TX in lock
100 to 200MHz 100 to 192MHz 110 to 170MHz
300 to 400MHz 335 to 400MHz N/A
400 to 520MHz 400 to 491MHz 400 to 468MHz
700 to 1000MHz (with gaps) 700 to 823MHz N/A
850 to 868MHz N/A
896 to 959MHz N/A