[TenTec] Proset Quiet Phone vs TenTec 777 with the Orion I

[Stuart Rohre]

Dean,
I guess you are referring to receive volume?  On some radios, there are 
more than one audio out jack.  Are you in the one for headphones?  If 
so, then you need a matching or step up transformer to match the radio 
and step up the audio to better match the headset.  Check the radio 
manual for the audio out impedance specs, and check the Heil 
instructions on what they expect to see for impedances.

-Stuart Rohre
K5KVH