http://wiki.radioreference.com/index..._channel_chart
The problem I've found with using one of these radios with FRS/GMRS radios is CTCSS tones ("subchannels"). I have the FRS/GMRS frequencies programmed but to use a "subchannel" I have to know what the CTCSS tone is by frequency and I can't modify values on a programmed entry without deleting the entry and starting again or just setting frequencies (frequency mode rather than channel mode).
At least, I haven't found an easy way to do this. There isn't enough channel memory to store all permutations as unique entries either.
In fact, as much as I like this radio, I also have a Motorola version of the earbone headset I like so I can just use a Costco-special blister-pack Talkabout to simplify interoperability with the group I play with.
Sent from my GT-P5113 using Tapatalk HD