What is meant by "Squelch Tail"

[carddude99]

I have a BC895XLT. Gosh it is awesome. I notice a very low thumpish sounding tone at the end of all transmissions. A beat or so long. (I have an external speaker) Is this what a squelch tail is?

Also, which is the best website to get tutorials? Specifically on CTCSS and Fleet Map Programming?

Thanks

 

[loumaag]

...I notice a very low thumpish sounding tone at the end of all transmissions. A beat or so long. (I have an external speaker) Is this what a squelch tail is?

Maybe, your description is a little vague. The squelch tail is a small amount of the the backround hash noise you hear if you turn your squelch off, but but only in the amount of time it takes your radio to realize there is no signal and close the squelch. Not all radios do it, you seldom (probably never) hear it if you are listening to a channel on which you use CTCSS or DCS. Also, you will not hear it on trunking signals. If you are hearing something that sounds different than that backround hash noise, it is not a squelch tail.

Also, which is the best website to get tutorials? Specifically on CTCSS and Fleet Map Programming?

Continuious Tone Coded Squelch System (CTCSS); you can find a definition in your owners manual or here. For an explanation of fleetmapping, use this link from here on RR.com as a starting point.

 

[INDY72]

On a Motorola Trunking System, when you hear the bump, or hum after a transmission its iether the repeater staying on for a few seconds to catch any additional traffic or the disconnect tone. On conventional systems when you hear the ch-pp type of sound that is usually what a squelch tail sounds like.

 

[nmfire10]

Sometimes, the "DPL Turn-Off Code" will make a quick little thump noise. It could be that. It's hard to say without hearing it.

 

[Voyager]

Also, you will not hear it on trunking signals.

That's not always true. If your scanner has a selection for EOT enable/disable, and you disable the EOT, the scanner will ignore the EOT revert back to squelch operation to determine when to switch back to the control channel. (EOT = End Of Transmission code)

Joe M.

 

[loumaag]

...(EOT = End Of Transmission code)...

Joe, I am well aware of what the disconnect tone is, I was just unaware that the BC895XLT had a setting for ignoring it. Would you please let us know how that is done. :?

 

[Voyager]

...(EOT = End Of Transmission code)...

Joe, I am well aware of what the disconnect tone is, I was just unaware that the BC895XLT had a setting for ignoring it. Would you please let us know how that is done. :?

I don't know EXACTLY how, but here is a quote from the StrongSignals BC895XLT FAQ:

With firmware 1.20 this function can be disabled by the use of the CTCSS key while in trunk mode.

Source: http://www.strongsignals.net/access/content/bc895faq.html#disconn

I suspect simply pressing the CTCSS key while on the trunked system will do the trick, but I don't know for certain.



In any case, if the EOT code (technically, the Disconnect Tone, but Uniden calls it the EOT code) is disabled, the trunked system WILL have a squelch tail on transmissions, as I mentioned above.

Joe M.

 

[loumaag]

I suspect simply pressing the CTCSS key while on the trunked system will do the trick, but I don't know for certain.

*sigh*
Now I am going to have to find someone with a newer 895 and check this out. Thanks for the info. Another tidbit of information to file away in the cranium.