Sheppard AFB trunked system changed

[DPS8504]

As dste points out, the offset should be 690 for the second one.
Try this:

CH Hi       CH lo      Base Freq        Offset        Step
380          689         460.000           380           12.5
690          75[B]9[/B]         410.000           690           12.5

Note the 759 as fixing the second CH Lo also.[/QUTE]

Lou

I have changed my setup in the custom tables setting to what you and dtse have, and now it is working a lot better. Thanks for the help.

 

[nd5y]

Shouldn't that be 406.000 instead of 460.000?

 

[loumaag]

Shouldn't that be 406.000 instead of 460.000?

Yep, you (like Rick) have passed the test...well okay, I flunked the test. :lol:

But the bottom line is apparently DPS8504 is getting the signals and the audio now.

 

[dste]

I looked at the earlier table and just did not see the hi/lo reversed either. I wish I had better skills at cut/paste import/export to paste in the actual WIN96 screenshot. I just tried and gave up.

Good listening on Sheppard, I haven't been there since 74.

 

[nd5y]

Not again!!!

Please note that the original thread is over 2 years old.

I noticed at Thanksgiving & Christmas (2009) that I wasn't hearing anything on the Sheppard AFB system any more but didn't have time to check it out. I thought I might have messed up my BCD396T but today I discovered that Sheppard has changed their trunked system again.

The 406.0/12.5/380 and 410.0/12.5/690 band plans no longer work.

I also noticed the SID displayed on the BCD396T is BC31h-0009. I think that has changed. Looks like it might be site 9 of som larger system now?
Also getting talkgroups in the 50000 range. They were never that high before. It appears to still be a 3600 baud CC with P25 voice channels.

 

[ILikeHatchChili]

Our nearby military installation used to use 460/12.5/380 band plan and all a sudden it quit. Some smart engineer working at the installation played around with the base frequency and came up with 406.1125/12.5/380, and presto, our scanner worked (the cc and voice frequencies also changed). I don't know if your cc and vc freqs changed.. Give this plan a try with a cc you have.

 

[nd5y]

I think I figured it out

It looks like the new band plan is 406.150/12.5/380 but there isn't a lot of traffic tonight so I din't know if that band plan is good for all the voice channels.

I don't think they changed any of the voice channels or control channels. 406.3625 is the CC today.

The Security Police dispatch talkgroup is now 50320.

 

[ILikeHatchChili]

I stand corrected: the original plan for here was 406/12.5/380, not 460/........, but that doesn't make a difference for you.

73

 

[nd5y]

Linked to San Antonio?

TG 816, which used to be Security Police dispatch, now sounds like hospital security. The weird thing is they refered to SAPD several times. I'm wondering if I was actually hearing something from one of the military hospitals in San Antonio being linked up here for some reason.

 

[DPS8504]

TG 816, which used to be Security Police dispatch, now sounds like hospital security. The weird thing is they refered to SAPD several times. I'm wondering if I was actually hearing something from one of the military hospitals in San Antonio being linked up here for some reason.

Tom,
I know you are in the Mineral Wells area, and seem to have a good antenna system which lets you hear more than normal. I feel that you are getting skip from S TX. I have found that the digital signal skips just as good as the analog channels if not better.
I have noticed a some new talk groups in the 5000 range at Sheppard. Those are the only talk groups that I donot get any audio on. I know that on some system that I have entered in my Pro106 it will track the system, but no audio. This happend to me during Ike when I did the hurricand duty with Command 1 trying to track the system at Galveston. I finally ended up geting a protable to keep with me so I could hear not only our frequencies, but Galveston also.

 

[nd5y]

I wish I had an antenna that good! I was in Wichita Falls over the weekend. This wasn't wasn't skip.

They were talking about somebody that came in to the ER with a knife injury and OR removed knife fragments which were supposed to go to SAPD. Maybe SAPD is the name of some department in Air Force hospitals, but it sure sounded like they were collecting evidence for the police.

I guess somebody in Wichita Falls needs to run Unitrunker on it for several days or weeks and figure out exactly what changed and I don't have the resources to do that.

 

[n5dhg]

Sheppard AFB Hospital

Today's Sheppard Hospital is nothing more than a large clinic and it operates NO Emergency Room.

 

[DPS8504]

Help me out here. Is this the correct table to use for my Pro106 for SAFB?

Lo Chan Hi Chan OffSet Base Freq Step
389 689 380 406.1500 12.5
690 759 690 415.0000 12.5

after I change the tabel to the above I started getting voice on two new talkgroups in the 5000 series.

Thanks for you help.

 

[DPS8504]

I am getting new talkgroups of
50208
50320
50336

It seems to be tracking, but sometimes there is no audio. Any ideas?

thanks.

 

[nd5y]

From what I could tell last week you should only need one band plan:
base 406.15 offset 380 step 12.5

I have never used a Pro-106 but you might try to watch your display when you have no audio and see if it flashes between the control channel and voice channel real fast.
That would indicate the scanner is being assigned a voice channel that it can't receive, which would happen if you had the wrong band plan.

Check all the voice channels in conventional mode and see if you hear anything. There might be interference or something that is preventing the audio from decoding properly on one or more channels.

Other than that, I don't know what to tell you. Somebody in the Wichita Falls area needs to run Unitrunker on it for a while and find out exaclty what is going on with that system.

 

[DPS8504]

I am getting new talkgroups of
50208
50320
50336

It seems to be tracking, but sometimes there is no audio. Any ideas?

thanks.

Tom,
I did a CC dump on the system, it was showing it was trying lock onto the following new channels
415.7473
415.3775
420.7375
430.7375
440.7573

how should I set the table up in the trunking file??

 

[nd5y]

Yeah, those are invalid channels because of the custom table problem.
The highest channel on Sheppard's system in real life is 410.7625

Radio Shack's custom band plan or table format is different than Uniden's.

I use Freescan, and it shows the band pland different than Uniden's software or what you enter manually by the keypad.
Freescan says:
lower freq 406.15
upper freq 410.8875
step 12.5
offset 380

The lower freq is apparently the same thing as the base freq and it auto calculates the upper freq.

On the BCD396T you can only manually enter:
base freq 406.15
step 12.5
offset 380

I don't know how Radio Shack does it exactly so try to put in:
low channel 380 (or 406.15)
high channel 759 (or 410.8875)
offset 380
base freq 406.15
step size 12.5

If that doesn't work, you will probably have to ask in the Radio Shack forum or something.

 

[DPS8504]

Thanks Tom,

I will try that. I ran the signal stalker on it for about 3 hrs the other day and did not get any higher than the 410.xxxx. I have a spread sheet to should calculate this, but I have trouble with it.

thanks for the help

 

[DPS8504]

I don't know how Radio Shack does it exactly so try to put in:
low channel 380 (or 406.15)
high channel 759 (or 410.8875)
offset 380
base freq 406.15
step size 12.5

If that doesn't work, you will probably have to ask in the Radio Shack forum or something.[/QUOTE]

Tom,

I followed your table plan above. It is now tracking and getting audio.

thanks for your help.

 

[texasemt13]

I haven't followed this until today but a lot of that information is lining up with this Military SmartZone here in San Antonio, as nd5y suggested.

The SysID is the same. I wouldn't be surprised (since this is pulling in Site 9, and the San Antonio Military System stops at Site 7) that they are now connected. I also, think the possibility of digital skip like that would be tough. I'll agree that conventionally, digital skip is awesome, but for all the stars to align and get all the correct trunking system info, plus decode the voice and talkgroup info is a stretch. The next question is- where is Site 8?