Hi Mark.
The A/B key is the 3 key on the keypad, so pressing that will toggle between
bands. When you press this key, it will produce a different tone depending
on which band you're on. If the tone is the same for both bands, try
pressing and holding the function key, the A key on the keypad for 1 second,
then try again.
Hope this helps.
73
Kevin Minor, Lexington, KY
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