Aren't those frequencies in the VHF band? I was under the impression that UHF started at 300 mHz.
The military aircraft band runs from 225-400 MHz. In order to differentiate it from the civilian aircraft band, and because it does cross the 300 MHz border between VHF and UHF, it is referred to as the UHF military aircraft band.
The UHF SatCom band also lies within that range. I believe there is a VHF SatCom band between 137-138 MHz, as well.
I think the OP was just showing activity within the band at the time he was listening, although he doesn't state that, nor does he state the date and time of his monitoring. I have not checked his profile to see if a location is listed, but that should also have been included in his first post.
John
Peoria, AZ