I've customized some of the tones in my PD982 handhelds, also in my UHF X1p. I set the volume of these tones to be linked to the volume control.
You define these tone up in the User Defined Tone part of the programming under Common. You enable these under Conventional>General>UI Indication to enable these tones in place of the default tones. I'm recalling all of this from memory so this might not be totally correct.
I like the Motorola Talk Permit Tone (TPT) used on Moto's P25 handhelds. It's similar to the old NEXTEL DirectConnect chirp but at a lower frequency. For the old NEXTEL DirectConnect tones, I programmed the PTT chirp, incoming DirectConnect call double beep, and the short end peep heard on the end of a received DirectConnect transmission. I also programmed the Motorola MOTOTRBO TPT in case I decide to use it.
Talk Permit Tone (TPT) in Hytera programming set to Motorola TPT (see below).
Voice End Tone in Hytera programming set to NEXTEL End Tone (see below).
I left everything else set at the default.
Analog and digital TPT delays are set at 300ms.
I had to make some audio recordings of these tones and then do some analysis of tone frequencies and durations to know what to program in the Hyteras.
Motorola P25 TPT: I like this one the best for a TPT.
910Hz 30ms
0Hz (silence) 20ms
910Hz 30ms
0Hz (silence) 20ms
910Hz 50ms
NEXTEL DirectConnect Talk Permit Tone (TPT): This is the familiar NEXTEL PTT chirp.
1800Hz 30ms
0Hz (silence) 20ms
1800Hz 30ms
0Hz (silence) 20ms
1800Hz 50ms
NEXTEL Incoming DirectConnect call: This is the Dee-Deet tone, heard at the start of an incoming DC call.
2300Hz 90ms
0Hz (silence) 90ms
2300Hz 90ms
NEXTEL DC End Tone: This is the short peep heard at the end of receiving a DirectConnect transmission.
2300Hz 40ms
Motorola's MOTOTRBO Talk Permit Tone (TPT) consists of 4 tones of 40ms duration, with no silence in between tones. It makes a warble type sound. I don't remember the tone frequencies off the top of my head right now.
Good luck.