XG-100P conventional P25

[W4KRR]

I have my XG-100P set up to operate on a conventional P-25 repeater in the 70 cm ham band. A NAC of $293 is used for both TX and RX. This repeater supports multiple digital modes. If someone is using the repeater in any mode other than P-25, I can still hear digital noise despite the NAC codes. Is there a setting somewhere that deals with this, or is this just the way it works?

 

[BMDaug]

I have my XG-100P set up to operate on a conventional P-25 repeater in the 70 cm ham band. A NAC of $293 is used for both TX and RX. This repeater supports multiple digital modes. If someone is using the repeater in any mode other than P-25, I can still hear digital noise despite the NAC codes. Is there a setting somewhere that deals with this, or is this just the way it works?

You should be able to set the channel mode to Mon, norm, or sel. The setting is next to the NAC… I’m not looking at RPM, so my terminology may be skewed. When set to sel, the radio should only open squelch if the NAC is recognized and the mode is P25. Setting to sel will also allow iCall to function.

-B

 

[KevinC]

You should be able to set the channel mode to Mon, norm, or sel. The setting is next to the NAC… I’m not looking at RPM, so my terminology may be skewed. When set to sel, the radio should only open squelch if the NAC is recognized and the mode is P25. Setting to sel will also allow iCall to function.

-B

Sq Mode
Select between "NORM" and "SEL" through "MON".

• NORM – When this option is selected, Normal Squelch enables the receiver to unmute on any P25 voice signal which has the correct Network Access Code (NAC). Voice messages from co-channel users which are using different access codes will be muted.

• SEL – When this option is selected, Selective Squelch mutes all P25 voice traffic except the voice traffic that is explicitly addressed to the unit. Messages which contain the talkgroup or Unit ID of the receiver and the correct Network Access Code (NAC) will be received.

• MON – When this option is selected, Monitor enables the receiver to unmute on any recognizable P25 voice signal. Selective muting based on Network Access Code (NAC), Talkgroup ID (TGID), or Unit ID is not performed.

 

[W4KRR]

MIne was set to "NORM", but it was still letting other stuff through. Based on the description above, it would seem that "SEL" would not allow any traffic except what was specifically directed at me.

 

[BMDaug]

Thanks @KevinC !

@W4KRR as long as everyone is using a single TG, it will work. It does not require a unit id to be part of a call to open squelch. Basically, you want to be able to use sel to take full advantage of the P25 feature set. I also have issues with squelch opening “incorrectly” in norm and it opens for everything in mon. You can also set a non-standard privacy tone for RX, which will block unwanted analog traffic, even when set to lesser squelch modes.

Using sel does allow icalls to work, which is pretty sweet!

-B