"using both the 434.500MHz band and 2m amateur band"
Nice mixed units there, how about either 'both the 0.690m and 2m bands' OR 'both the 434.500MHz and 149.9MHz bands'?
"using both the 434.500MHz band and 2m amateur band"
Nice mixed units there, how about either 'both the 0.690m and 2m bands' OR 'both the 434.500MHz and 149.9MHz bands'?