I got a:
XTS3000 VHF
H09KDH9PW7BN
591008-4F1E00-9
CPS Rss
When utilizing a speaker/mic (non public safety) Radio emmits a low tone beep upon Transmitt/When I push PTT on SpeakerMic, only.

However, when there is not a speaker mic attached the radio transmitts (when pushing radio Side Button PTT) 'ok' with NO low pitch tone, I can hear the MOdat/MDC SideTone
What am I missing? Id like to disable the low pitch tone/have no tone when using the Speaker Mic.
Is this a secure equip issue, I think I am missing something to simply disable, and I cant find it !
thanks for your time !
John