Communications Support Forums

XTS4000
H18QCN9PWAN
Flash: 5A9008-101F87-7
Host: R20.00.10
DSP: R19.50.00
UCM: R05.07.17

XTS4000 has an issue with distinguishing between encrypted and clear transmissions in both Mixed Mode & ASTRO on a Conventional Personality. This results in the annoying 'garbled noise' RX when an encrypted transmission is received instead of muted audio on encrypted RX. Astro clear & Analog RX is working as per normal.

It appears to be a similar issue to that of tuckerm in http://communications.support/threads/8834-XTL-Mute-Encryption?highlight=encryption+mute


  • RX Mute Delay: 1ms
  • RX Voice Type: Mixed Mode
  • RX Unmute/Mute Type: And Unmute, or Mute (also tried) And Unmute, Std Mute (also tried) Standard
  • ASTRO Tab RX Unmute Rule: Normal Squelch (also tried) Digital CSQ
  • NAC: F7E 'Wildcard' (unfortunately have no idea what the true NAC of RX I'm monitoring.)

XTS4000 has the Hub Defeats PL Field blanked out, due to model.

Any suggestions about how to mute the ASTRO encrypted RX and to allow the the ASTRO clear & Analog RX will be gratefully appreciated.

Thanks in advance.