Via the FCC license website searching frequency ranges (230 to 400 mhz) 48 pages found... http://svartifoss2.fcc.gov/reports/frequency_range.cfm Here's a sampling 2.8524 3.2824 5.5724 8.8234 13.3134 21.9324 123.20 123.325 123.55 233.8 268.8 275.2 281.2 304.6 309.8 314.6 324.6 345.4 359.4 360.4 372.3 380.4 382.6 399.8 Ken 36.90