8528 OPTION A (Amateur)
This option allows TX operation when in freetune mode on the bands below.
It is firmware enabled (in channel eprom).
3.5 to 4.0
MHz
7.0 to 7.3 MHz
10.1 to 10.15 MHz
14.0 to 14.35 MHz
18.0 to 18.2
MHz
24.8 to 25.0 MHz
28.0 to 29.7 MHz
Note:- Above 24MHz please install the low power link otherwise
you may burn out the filter unit.