Pro-96 Motorola Type I Talkgroup Question....

[Forts]

I've been experimenting with a type IIi hybrid system in my area and I have a question in regards to the Pro-96 and Type I talkgroups. I have my Pro-96 and 246T both tracking the same system, both using the same fleetmap. What I have noticed is the 2 scanners will show type I talkgroups differently. For example, when the 246T shows a talkgroup of 247-1, the Pro-96 shows 2047-1. Is this just a quirk of the Pro-96, or something funky with my fleetmap settings?

Thanks!

 

[DonS]

I've been experimenting with a type IIi hybrid system in my area and I have a question in regards to the Pro-96 and Type I talkgroups. I have my Pro-96 and 246T both tracking the same system, both using the same fleetmap. What I have noticed is the 2 scanners will show type I talkgroups differently. For example, when the 246T shows a talkgroup of 247-1, the Pro-96 shows 2047-1. Is this just a quirk of the Pro-96, or something funky with my fleetmap settings?

The PRO-96 displays talk groups in a block with size code 1 (S01) in the format BFFF-S (B=block, F=fleet, S=subfleet). This is because size code 1 has seven bits for the Fleet value, for 128 different fleets - this requires three digits to display all the possible values.

The PRO-96 displays all other size codes (S02 - S14) as BFF-SS, because all of their possible fleet and subfleet values will fit in two digits.

What does the 246T display if you have an ID like 2101-3 (that is, a fleet value of 101), when block two's size code is S01 (or 'A' if Mot or Trunker format)?

 

[Forts]

Thanks for the reply Don, that's interesting. I haven't seen any activity on a fleet # such as 101... But I'm 99% sure I'm using the correct size code (I've seen a codeplug for a radio on this system and it showed a Motorola size code of 'A'). Maybe the 246 just omits the 0 on fleets less than 100? Might be a question I can foreward to UPMan.

 

[DonS]

Maybe the 246 just omits the 0 on fleets less than 100?

I was thinking that myself. You could look at other IDs, with other size codes, to see if they're always displayed as BFF-SS or if the 246 drops leading zeroes anywhere else. That is, if you had a block with a size code of S02 (where the PRO-96 would display something like 306-03), what does the 246 display? 306-03? 36-3? 306-3?

 

[Forts]

I know with a size code of 3, the Pro-96 shows 200-01 where the 246 shows 200-1 (so does my BCT-8... and I don't recall what my 780 shows).

 

[DonS]

I know with a size code of 3, the Pro-96 shows 200-01 where the 246 shows 200-1 (so does my BCT-8... and I don't recall what my 780 shows).

Any info on size 11? I should've asked about that one in the first place - it has a 4-bit subfleet and should require two digits (size code 3 only has a 3-bit subfleet and would never need more than 1 digit).

Size codes 4 and 12-14 are even more interesting: no fleet bits.

I do like how the GRE scanners display type I IDs. They're essentially "fixed" in their format. When looking at a PRO-96 type I ID, I know exactly which digits represent block, fleet, and subfleet.

I don't have any Uniden radios (hence my queries about how the 246 displays IDs), so I can't comment on them. Of course, it's entirely possible I'd like how they do it, too That is, if they always trim leading zeroes from fleet and subfleet values, it wouldn't be hard to figure out the B/S/F fields: first digit is block, remaining digits to hyphen are fleet, digits after hyphen are subfleet (which is, come to think of it, exactly what I see on the GRE radios, with the addition of leading zeroes to get a fixed field width).

It's probably just a matter of what one is used to seeing.