I am ussing several different radios all of which have a loud squelch tail at the end of the received transmission when the repeater kicks out. It is much louder than the audio level of the conversation. Is this a radio settings that needs adjusting or is this something the repeater is doing? If it is radio related, how is it fixed? If it is repeater related how do I tell the guy who works on the radio what he might do to improve the quality of our service?
By the way, these same radios do not do this on other channels. In both cases these are conventional repeater channels.
Thanks
Andy
Reducing or Eliminating Squelch Tail
Moderator: Queue Moderator
Reducing or Eliminating Squelch Tail
"Once man has hunted armed man and liked it there is no other hunt like it."
Could it be the repeater?
If the radios don't do this on other channels, then I would ask "What is different about this channel?"
Are the other channels using CTCSS/DCS/CSQ and this channel is not?
Is the squelch tail possibly coming from the repeater, and not from the radio?
Are the other channels using CTCSS/DCS/CSQ and this channel is not?
Is the squelch tail possibly coming from the repeater, and not from the radio?
This is my opinion, not Aeroflex's.
I WILL NOT give you proprietary information. I make too much money to jeopardize my job.
I AM NOT the Service department: You want official info, manuals, service info, parts, calibration, etc., contact Aeroflex directly, please.
I WILL NOT give you proprietary information. I make too much money to jeopardize my job.
I AM NOT the Service department: You want official info, manuals, service info, parts, calibration, etc., contact Aeroflex directly, please.
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larryepage
- Posts: 221
- Joined: Tue Jan 15, 2002 4:00 pm
"Reverse Burst" is a function that modifies the last few milliseconds of the PL or DPL tone to force the receiver to squelch before dropping the transmit carrier. To work properly, it will need to be set up in each radio and in the repeater. Given the symptoms you describe, it sounds like this function is not set up properly in the repeater's transmitter or that the receiver is not properly functioning with it.
It is normally a programming parameter in newer radio equipment. And be aware that different manufacturers implemented this slightly differently...so it may be set up and turned on, but just not compatible in this one repeater.
Anyway...that's where I'd start looking. And I think there was a thread on this topic a couple of years ago...
Regards,
It is normally a programming parameter in newer radio equipment. And be aware that different manufacturers implemented this slightly differently...so it may be set up and turned on, but just not compatible in this one repeater.
Anyway...that's where I'd start looking. And I think there was a thread on this topic a couple of years ago...
Regards,
Larry Page
W5LEP
FCC GROL
W5LEP
FCC GROL
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KC8NIY
- Batboard $upporter
- Posts: 93
- Joined: Thu May 29, 2003 7:17 pm
- What radios do you own?: APX7K, XTL5K, HT1250, MTS2K
As Larry said, depending on what type of repeater is used, you might need to set a "Non-Standard Reverse Burst" in the personality on each of the radios.
On the other hand, some repeaters are set up to leave a squelch tail at the end if your input signal doesn't reach a certain threshhold. Kind of a friendly "increase your power" reminder.
Or it may just be a general problem with the repeater.
On the other hand, some repeaters are set up to leave a squelch tail at the end if your input signal doesn't reach a certain threshhold. Kind of a friendly "increase your power" reminder.
Or it may just be a general problem with the repeater.
ANDY - THIS SOUNDS LIKE THE REVERSE-BURST IN THE REPEATER IS NOT PROGRAMMED OR THE REPEATER HAS A THIRD PARTY TONE PANEL CAUSING THE KER-CHUNK. THIS COULD BE A GOOD THING BECAUSE YOU WILL KNOW WHEN THE PERSON YOU ARE TALKING TO ON THE RADIO STOPS TRANSMITTING. JUST WATCH THE MOVIE "SAVING SILVERMEN" - WHEN THE TWO FRIENDS KIDNAP THE GIRLFRIEND THEY DEMONSTRATE THE KER-CHUNK TO BE VERY FUNNY
Repeater SQUELCH burst noise
The noise burst may also be an issue with the repater itself having the squelch set too loose. depending on just what the radio is, the squelch setting may or may not effect this problem.
In an older Motorola like a maxtrac and micor, you had the option to and the repeater audio and keying. it may mean checking a couple of board jumpers if this is what model the repeater is.
jIM
In an older Motorola like a maxtrac and micor, you had the option to and the repeater audio and keying. it may mean checking a couple of board jumpers if this is what model the repeater is.
jIM
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raymond345
- Posts: 268
- Joined: Sat Sep 22, 2001 4:00 pm
We see it all the time.
Most Good repeaters or controllers have the option to select the tail
off or on. We always select off.
Two units like it is the motorola msf5000
and for the gm300 repeater users with the
csi 154+ it can be turned off or on.
There are many out there.
off or on. We always select off.
Two units like it is the motorola msf5000
and for the gm300 repeater users with the
csi 154+ it can be turned off or on.
There are many out there.
"Most Good repeaters or controllers have the option to select the tail off or on. We always select off.
Two units like it is the motorola msf5000 and for the gm300 repeater users with the csi 154+ it can be turned off or on."
OK. How do I go about turning off the transmit PL using the internal MSF5000 controller? I do not recall seeing an option for that feature. There IS a PL DISABLE input that I could use with an External controller, but I believe the only thing the radio will do is reverse burst with PL.
Bob M.
Two units like it is the motorola msf5000 and for the gm300 repeater users with the csi 154+ it can be turned off or on."
OK. How do I go about turning off the transmit PL using the internal MSF5000 controller? I do not recall seeing an option for that feature. There IS a PL DISABLE input that I could use with an External controller, but I believe the only thing the radio will do is reverse burst with PL.
Bob M.