Correct offset for MECA(IDPS)

[W9NES]

I have a Uniden 996T and need to know the correct offset for Indianapolis Department of Public Safety. It is 12.5Khz or 25Khz, Also what is the correct base frequency for IDPS for a Uniden 996T. Is it 851.00625?Would like to improve my reception without putting up a outdoor antenna as I do not need one. I have plenty of signal on the CC Channel.If someone could provide this infomation from the Indianapolis Metro area that would be great.I would like to hear from members in the Metro Indianapolis/Marion County area only please.Thank you for your help.

 

[W9NES]

Can anyone help on this matter? Maybe BOB W9RXR or another person who listens to MECA (IDPS) can assist on this matter.

 

[rdale]

None of those settings are needed and/or improve reception.

 

[W9NES]

Yes settings are needed to improve the audio.A person who lives in Brownsburg,Indiana cannot hear IDPS(MECA) becuase of the audio but can hear Safe-t just fine.Audio has been changed for analog and digital talkgroups on IDPS and no change for my area of Northwest Marion County 79Th and Michigan Road..Would like to hear from others on what they have done to fix this problem.I would only like to hear from other members in the Metro Indianapolis/Marion County area only.Thank You.

 

[DiGiTaLD]

That's not going to help you one bit. The scanner doesn't need all that stuff to track it. Its a P25 standard system, and any scanner that can do P25 control channel only trunking on 800 MHz from the factory doesn't need all the extra specs you are asking for.

If you want to listen to the input channels, they use the standard 800 MHz repeater shift of -45MHz below the output channels. Of course you'll have to listen to those in conventional mode, and you're only going to hear mobiles transmitting when they're very close, and you're not going to hear Control at all, because they're all on wireline consoles.

You mean you don't have any outdoor 800 MHz antennas in **The Northwest Communications Center**? All you need is a little 800 MHz Yagi fed with some decent coax pointed at the nearest MECA transmit site. In most cases, this will solve your issues. Dedicate one of your multitude of scanners only to MECA, point the antenna directly at the site, and don't mess with it. Until you are willing to do that, quit whining about how your $400 scanner chokes on LSM CQPSK P25. People on here have presented you with the solutions dozens of times, but for some reason you think you should be able to listen to the system using a paperclip in your mom's basement. Welcome to Digital Trunking.

 

[scannerfreak]

You guys should know better by now...:lol:

 

[W9NES]

DiGiTaLD,,Please share with the rest of us what you use for IDPS(MECA) to hear them for a scanner..Also are you getting any garble in the audio. I did buy a 800Mhz antenna that wa pointed at both the Traders Point site and the Butler Site from 79Th and Michigan Road and nothing impoved. This was a long time back when MECA went digital.When they were analog I had no problem hearing them.I would like to hear the audio again in a clear voice so I can hear it like I used to. Yes I bought that antenna after everyone posted that I go out and buy one.I spent a lot of money on both the antenna and the LMR-400 low loss coax.After it did not work I sent back the antenna and the coax and got a refund. Nothing works in this area because of all the towers in the area of 79Th and Township Line Road producing a 24/7/365 RF interference problem.There is also no Control Channel found at 7900 North Michigan Road becuase of the towers including a cell phone tower in the Northwest Corner of 79Th and Michigan Road.As I have posted before after you leave 79Th and Michigan Road and you get to 71St and Michigan Road you will get the CC Channel full strength and everything is great.No scanner will program a -45mhz offset Thank You.

 

[rdale]

Thanks for clarifying.

 

[W9NES]

I got a pm from another member in the Metro Indianapolis/Marion County area who owns a Uniden 996T and was told the following: Re-band off set is 6.25 and pre-reband is 12.5. Thank You to the member who helped me on this. IDPS(MECA) is 6.25 This would be a great idea to indicate the offset of 6.25 in the IDPS(MECA) Listings.Thank You.

 

[rdale]

No need since that info doesn't change the programming,

 

[W9NES]

That infomation is not listed and no one knows this. No one knows that before re-banding that the offset is 12.5 and re-banding is 6.25

 

[k9nzf]

Edited by user.

 

[pliquett]

I was lead to believe that re-banding did not effect P25 systems. I looked on Freescan and when you select P25 you are not given a re-band table. You must select Mot/Reband as system type to get the tables. Good luck in your quest. I set my threshold from auto to manual and (7) and haven't had any issues.

 

[W9NES]

Thank You pilquet for your post.I will try the 7 setting.There are no rebanding tables for the Uniden 996T.

 

[rdale]

NES - how exactly are you programming this offset in? Where?

 

[W9NES]

Thanks pilquet,I did the adjustment on the Uniden 996T to 7 in the P25 Adjust mode and has helped out a lot.Yes settings do make a difference. Now I am hearing the audio better than it was and I did not need a expensive outdoor antenna pointed at a tower site to get this done.

 

[rdale]

7 is not an offset. The threshold is something that should have been tweaked a long time ago, that's why Uniden opened up those options.

And the reason I've mentioned that to you a good half-a-dozen times or more in your previous posts.

 

[W9NES]

rdale the 7 is not a offset.It is a p 25 ADJUST MODE, I also made the P25 adjust level setting at 160 and I am not having any problems at all.The correct offset is 6.25. Your good half a dozen times has been tried in the past with no joy and no improvement. Thanks for the help Pliquet.

 

[rdale]

I know it's an ADJUST MODE, I've told that to you over half-a-dozen times in previous threads and you said it made no difference.

I am asking what you are doing with the OFFSET. Where are you putting that in your scanner/software?

 

[W9NES]

rdale,The threshold has been set and again no diiference in the voice and a lot of garbbling in the voice and it is not clear. Yes I did deal with the threshold issue over a half dozen times in the past.That was the FIRST thing I tried between that and a antenna that was put up outside on my roof and nothing helped.Money wasted on a antenna and coax that EVERYONE told me that I needed. Got all my money back along with a refund for LMR-400 coax that was not cheap in any way. Yes I did do everyting that was posted and NOTHING HELPED.