oddball Radio - FM / data on Airband frequencies

I have a Motorola XTS3000 hand-held transceiver which I purchased some years ago. The radio has a Federal gov't history.

The radio has about 10 frequencies/channels programmed. When the xmit button is pushed, the radio will xmit until power is cut to the radio. This xmit is a 'data stream'. Channel are named HRR-nnn and one channel is HRX-nnn. The descriptions associated with the channels ate: SAW-ON, SWA-OFF and SWA-LONG

So, the question is: does any of of this nomenclature ring any bells in the aircraft world. Particularly dealing with electronics ?

HRR-nnn
HRX-nnn

SWA-ON
SWA-OFF
SWA-Long

three of the frequencies:
133.860 Mhz
134.160 Mhz
134.460 Mhz

thanks, jack