Control Channel Only Help

joey_corleone82 · #1 (**permalink**) 01-26-2006, 02:18 PM

My 796D seems to be having some difficulty with Detroit. I know there are issues with Detroit, but I'm not sure what precisely. Today I was in dearborn getting a great signal (4-5 bars) yet it would stop detecting the main control channel (it switched from toggling between NFM/DAT to just saying NFM and then would say control channel not found)

In this particular bank I had every channel locked out except the detroit 701 current control channel (868.7250). Oh, and often the scanner switched very very quickly between the control channel and a frequency and it is unlistenable. Is this a Uniden problem does anybody know?

confused, and frustrated...

seamusg · #2 (**permalink**) 01-26-2006, 02:56 PM

Quote:

Originally Posted by joey_corleone82

My 796D seems to be having some difficulty with Detroit. I know there are issues with Detroit, but I'm not sure what precisely. Today I was in dearborn getting a great signal (4-5 bars) yet it would stop detecting the main control channel (it switched from toggling between NFM/DAT to just saying NFM and then would say control channel not found)

In this particular bank I had every channel locked out except the detroit 701 current control channel (868.7250). Oh, and often the scanner switched very very quickly between the control channel and a frequency and it is unlistenable. Is this a Uniden problem does anybody know?

confused, and frustrated...

The BC796D will only do one system/tower per bank, I found out during the Warren cut you can't just lockout control channels, it finds them anyway. I had tried to lockout the old system when the were testing and had both systems up, the scanner would find the old system and get confused, even though it was locked out.

joey_corleone82 · #3 (**permalink**) 01-26-2006, 04:27 PM

Well, I also have Detroit programmed in it's own bank, because there are so many talkgroups I want to track....and I got the exact same behavior. Basically I have all the 701 Tower control channels programmed in the first few channels or so, and the rest is Detroit conventional stuff like casino's , sports , security, etc....all the conventionals are locked out, and still same results.

I am going to try it set to plan 3. I can't figure the difference anyways, since according to the manual Detroit simulcast falls into both plan 2 and plan 3 if you read it carefully

plan 2: highest freq is > 866 and ends in 000, 125, 250, 375, 500, 625, 750, or 875.
detroit's hightest freq is 868.9375
verdict: true

plan 3: Use if the last three digits of all the frequencies in the system end in 000, 250, 500,
or 750.

detroit 701: every frequency in the entire system ends in 000,250,500,750
verdict: true

which one should you use, or does it matter?

FYI I'm crossposting this to the Uniden form in case somebody might know there as well

seamusg · #4 (**permalink**) 01-26-2006, 04:35 PM

One thing I've had trouble with conventional is when their set to priority, it's caused trouble with the trunked systems.

joey_corleone82 · #5 (**permalink**) 01-26-2006, 05:45 PM

I have priority scanning off

MacombMonitor · #6 (**permalink**) 01-26-2006, 08:25 PM

Quote:

Originally Posted by joey_corleone82

Well, I also have Detroit programmed in it's own bank, because there are so many talkgroups I want to track....and I got the exact same behavior. Basically I have all the 701 Tower control channels programmed in the first few channels or so, and the rest is Detroit conventional stuff like casino's , sports , security, etc....all the conventionals are locked out, and still same results.

I am going to try it set to plan 3. I can't figure the difference anyways, since according to the manual Detroit simulcast falls into both plan 2 and plan 3 if you read it carefully

plan 2: highest freq is > 866 and ends in 000, 125, 250, 375, 500, 625, 750, or 875.
detroit's hightest freq is 868.9375
verdict: true

plan 3: Use if the last three digits of all the frequencies in the system end in 000, 250, 500,
or 750.

detroit 701: every frequency in the entire system ends in 000,250,500,750
verdict: true

which one should you use, or does it matter?

FYI I'm crossposting this to the Uniden form in case somebody might know there as well

I'm using PLAN 2, for Detroit #701, because all the control channels are above 866MHz.

Detroit's Simulcast system gives most all of us fits, you're not alone!

Bill

WU8Y · #7 (**permalink**) 02-01-2006, 01:56 AM

Quote:

Originally Posted by joey_corleone82

plan 2: highest freq is > 866 and ends in 000, 125, 250, 375, 500, 625, 750, or 875.
detroit's hightest freq is 868.9375
verdict: true

plan 3: Use if the last three digits of all the frequencies in the system end in 000, 250, 500,
or 750.

detroit 701: every frequency in the entire system ends in 000,250,500,750
verdict: true

which one should you use, or does it matter?

FYI I'm crossposting this to the Uniden form in case somebody might know there as well

Hmm. Are those three digits from the manual the kHz part of the frequency? (I know, it's not clear in the manual, I'm looking at it right now.) For example, the 868.9375 freq fails the Plan 3 test, for its frequency ends in 9375...but if we only look at the last two digits, it does pass the Plan 3 test.

FWIW, I've specified Plan 2 for the Romeo tower and I haven't noticed anything too awry.