XTS3000 DPL scan problem

tfr501 · Post by **tfr501** » Sat Apr 24, 2004 10:16 pm

I have a XTS3000 800 radio. The problem is I have several conventional frequencies programmed with DPL tones which I cannot receive on while in scan mode. If I turn off scan, I can receive without any problems. I don't have any problems scanning conventional frequencies programmed with PL tones.

Thanks in advance for any suggestions.

tfr501 · Post by **tfr501** » Sun Apr 25, 2004 2:06 pm

The DPL is 606. That is the correct DPL for this system.

The radio is using Firmware 07.07.00 and DSP N07.03.20
Model H09UCH9PW7BN
FLASHcode 591008-4F1E00-9

******************************************
Smart PTT.................Disabled Auto Scan.................Disabled
Rx Emphasis................Enabled
Tx Emphasis................Enabled
Busy LED...................Enabled Tx Deviation...............5.0 kHz
Unmute/Mute Type....UnMute,Or Mute Tx Deviation T/A...........5.0 kHz
Rx Unmute Delay (ms)........1- 0 Channel Spacing..........25.0 kHz
Reverse Burst TOC..........Enabled
Squelch (Fine Tune)..............5
Second LO Side Injection..Disabled

Surveillance Mode.........Disabled
******************************************

SCAN OPTIONS
────────────
RADIO WIDE CONVENTIONAL
────────── ────────────
Nuisance Mode Delete...... Enabled Carrier Detect Required....Enabled
Priority Scan Alert........Enabled Priority Chan Marking.....Disabled
Voice Rx/Tx Hold Time (sec)......3 Monitor Hold Time (sec)..........3
Data Rx/Tx Hold Time (sec).......3 Time Between Pri Samples (ms)..500
HUB Suspends Scan.........Disabled

RSSI Voting Threshold...........57
TRUNKING
────────
Failsoft Hold Time (sec).........6
System Search Time (sec).........1
*****************************************************

As far as calibration goes, I have had it checked yet but it receives fine if it isn't scanning.

Thanks!

Dale Earnhardt · Post by **Dale Earnhardt** » Sun Apr 25, 2004 2:36 pm

Are you using MDC ???

tfr501 · Post by **tfr501** » Sun Apr 25, 2004 2:52 pm

No.
────────────────────────
Signalling....................None
Receive Only..............Disabled
Direct / Talkaround........Enabled
Time Out Timer..........3- 60
Scan List........................1
Hot Keypad (DTMF).........Disabled Rx Voice/Signal Type.....Non-ASTRO
Phone Operation...............None Tx Voice/Signal Type.....Non-ASTRO

Receive Transmit Direct
Frequency (MHz) 856.43750 811.43750 856.43750
Squelch Type DPL DPL DPL
Code 606 606 606
DPL Invert Disabled Disabled Disabled

tfr501 · Post by **tfr501** » Sun Apr 25, 2004 5:06 pm

I set to "1" and it didn't have any effect on it.

I have three channels in this portable with the same 606 DPL and I can't receive on any of them while scanning unless I have one of them set as the priority channel. If it's a non-priority channel, I don't hear a thing from the repeater or any of the three other portables I've used while trying to figure this weird problem out.

Post by **batdude** » Sun Apr 25, 2004 5:14 pm

fyi - i had a similar problem with an mcs 2000 mobile.

it had to go to the depot for replacement of one of the flat-pack ic's...

doug

tfr501 · Post by **tfr501** » Sun Apr 25, 2004 5:58 pm

Thanks for all the suggestions.

This DPL problem won't be a issue for too much longer. This conventional system will is moving into a trunked system in a few months.

I'll probably look into a firmware upgrade anyway as I hear it improves the audio and a few other issues.

RKG · Post by **RKG** » Sun Apr 25, 2004 6:11 pm

While I can't say I have a good idea as to what the problem is, just for the hell of it lengthen the value of the parameter "Time between pri samples" to 2000 msec.

If your scan list is large enough, it is possible that, after detecting valid freq on a non-priority channel, the radio doesn't sit on the channel long enough to decode valid DPL before being hauled back to the priority channel.

In theory, if this is a problem it should also affect a non-priority channel with PL as well, since the time required for PL decode (about 275 msec) is the same as that required for valid DPL decode. But just for the hell of it, lengthen that parameter and see what happens.

tfr501 · Post by **tfr501** » Sun Apr 25, 2004 6:38 pm

I had it set to 500 msec. I moved it up to 2000 msec and it didn't have any effect on the problem.

Thanks for the suggestion.

I wonder if there's anyone monitoring this thread that has firmware 07.07.00 and DSP N07.03.20 that would test it. That should tell us if it's my radio or a firmware problem.