Response Inhibit

As of R2.7.0, it is possible to prevent a radio from responding to any command from a rogue (unknown/unauthorised) radio. Examples of these commands include Radio Check and Remote Monitor.

This feature is different from Transmit Inhibit in that, with Response Inhibit, the user is still able to PTT and transmit.

With Transmit Inhibit, all transmissions from the radio are turned off - including PTT presses.

This is a CfS feature and requires the purchase of a licence in addition to the firmware upgrade.


  1. Thanks Wayne for your reply on OTAP & remote monitoring, I thought it's best I follow up here to keep your website on topic!

    Is Response Inhibit a per radio licence? What exactly is or isn't blocked when activated, or is it customisable? I understand their PTT will still work, but will it stop all ARS messages, or can some devices be set up as 'trusted devices" (eg Trbonet)?

    Thanks again,

    1. Yes, the licence is done per radio.
      With this enabled, all transmissions, except that which is achieved by pressing the PTT, are disabled - that includes ARS etc.
      Bluetooth and WiFi are not affected.

  2. I would kindly ask for a clarification - what this license does compared to options Radio Disable Decode, Remote Monitor Decode and Emerg. Remote Monitor Decode?


  3. When response inhibit is turned on, the radio will not send an acknowledgment when any of the above are received.

  4. Thanks. Ok, so if Response Inhibit is enabled, radio will not send an ACK to any unauthorized request.
    But if there is not Response Inhibit license, the possibilities for Remote Monitor Decode disable/enable, Radio Disable etc. still exists.
    So the question is - do these options work independent of Response Inhibit or they require Response Inhibit License?

  5. Remote Monitor etc. will still cause the target radio to send an ACK, if the Response Inhibit license is activated AND the user/technician has turned it off.
    If the Response Inhibit license is not activated Remote Monitor etc. will still cause the target radio to send an ACK as normal.


Powered by Blogger.