Oops, I meant to leave the quote in the edit...it was for ofd8001, sorry about that.
And yes, you are correct about it being scanner-wide vs per-site. That was pretty half-***ed by Uniden, no doubt.
Quite alright! A lot of people do not realize the difference in the manual adjust modes between the XT and T models. The XT's really only allow you to narrow down the allowed tuning range. No way to really lock it to a specific voltage like can be done with the T's.
I remember UPMan (Paul) saying in a very old thread that they wanted to make the T's more automatic but there was some memory write limitation they were worried about hitting as the auto routine would have caused many writes to some form of eeprom memory that has a limited amount of writes before the cells start failing. So Uniden opted for the manual mode which stopped the auto writes. My guess is that Uniden has used a different type of ram or eeprom in the XT series that stores the P25 settings as it attempts to auto adjust. Something that has a much more generous amount of writes before things start failing. Perhaps the same type memory that is used in today's SSD drives. Those also have a finite amount of writes before cells start failing but it is up there pretty high.
I suppose when that change was made, it may have made it impossible to bring back the true manual settings per site that works so well on the T models. Or, maybe Uniden just likes trying to make the Auto mode work like they had hoped for!
I really wish they would bring back the old T style of manual P25 settings though. I really think it would fix the XT radios if it works like it does in the T models.
I can only hope they will offer that in a future update.
I know the T models did have an Auto setting also like the XT models do but for some reason, that mode did not cause the excessive memory writes so maybe the auto mode info in the T models was written too a different type of ram.
Or the worst case scenario, all of us with T models in Auto mode will find they stop working one day when the ram cells start failing!
The very old RadioShack PRO-2001's used a form ram that did start failing after it was written too to many times. After a while, they woud no longer hold the frequency info you entered. You could only use them on a single channel. Once you hit scan, the info was erased as the memory cells could no longer accept and store writes.
I'd bought a couple of those models off a guy on eBay. The ram was bad in both. I finally found a seller on eBay again that sold the exact ram chips used in those models. It was new old stock. I removed the old chips and installed sockets and then plugged in the new ram chips and they still work to this day! I'd first tried using a similar form of ram but it needed a different method of refreshing the ram so it would not lose it's contents. Another words, it also needed a battery for backup but the refresh timing circuit was different than the stock ram used. I could never get the refresh circuit working with the more modern ram so I was ready to give up on the things but then I ran across the guy that had the original chips unused. They were cheap also. Something like $3 dollars each chip so I bought several.
I still see 2001's today that still store their programming info on the original chips. I assume whomever owned those units did not program them very often so that is why the chips had not failed yet.
I still use both my 2001's to this day as we still have a lot of conventional stuff around here.
St. Clair County has a lot of traffic (Nonstop really).
