Tone Remote Adapter question

BPD109 · Post by **BPD109** » Sun Sep 04, 2005 11:42 pm

I have a question concerning the Motorola tone remote adapters, the command series (L1548, I think. It s the one that interfaces with 16 pin accessory connector). I want to use this tone remote with a CDM 1250...and it works ok with it.

Here is the question,
I heard that this remote adapter is capable of mode steering, (by that, I mean I would like to be able to change channels on the radio, from the console by pressing the f2, and f3, and so on keys on the console)...

Is there any special kind of configuration (in the CPS) that I need to set to use this feature? What are the dip switches on the back fo the remote adapter used to control?

Hope my questions are specific enough to get some help.

Thanks

n1pfc · Post by **n1pfc** » Mon Sep 05, 2005 7:33 am

You need to place the pins from the remote adapter that deal with the channel control into the aux i/o pins on the cdm mobile and program them in CPS as such....

they work in a binary fasion with the low number being the low bit.

in CPS you have channel select 1 2 3 and 4

for outputs from the tone remote, you have channel select 0 1 2 and 3

0 from the tone remote goes to 1 on the cdm, 1 goes to 2, 2 goes to 3, etc...

If you are only going to use say 4 channels, you only need to use 3 of the aux i/o pins to tell the radio what channels what to go to when selected on the tone remote.

Note, on the CDM mobiles, once it realizes you are using the I/O jack for channel steering you will not be able to use the front control panel to tell the radio what channel what to do, unless you unplug the I/O jack and power cycle the radio.

On the CDM750's, the channel select indicator blinks indicating it is in remote control.

Kurt

BPD109 · Post by **BPD109** » Mon Sep 05, 2005 11:37 am

Kurt,

THANKS!

Now, question number two, which pins are the ones for channel steering on the remote adapter? I havent any diagram/information about them.

n1pfc · Post by **n1pfc** » Mon Sep 05, 2005 11:54 am

I'll have to look tomorrow @ work for you. I dont have a manual here at home =(.

You can actually make the tone remote adapter do 16 channels if you want to. In order to do that you'll have to re-program the 2050Hz tone which is normally monitor.

Most I've wired up before is 3 channels on a CDM-750. I actually wired the 4th bit wire, but didn't end up using it as the CDM only has 3x frequencies programmed in it.

Before that had to do similar with a CDM-750 wired to a zetron console that had 2x channels in it. Stuck a tone remote adapter on it and told the zetron channel card that instead of being local, change to tone and have 2x channels on it. Worked like a charm.

Nothing like trial by fire...

that and getting the MC2000 remotes to do QC-II paging when you've never done it before and the agency you're installing one for just let all the magic smoke out of their console in a thunderstorm.

Kurt

BPD109 · Post by **BPD109** » Mon Sep 05, 2005 12:08 pm

Thanks in advance.

Can't wait.

Post by **xmo** » Mon Sep 05, 2005 12:30 pm

L1548 supports two channel selection.

The L1548 TRA is an IAI product [the MRTI people]. Here is the pin out of the P2 connector on the L1548:

PIN - FUNCTION
1 - Rx audio - (7)
2 - F1
3 - Rx audio + (11)
4 - F2
5 key pin
6 - PTT (3)
7 - mic hi (2)
8 - monitor (14)
9 - mic lo (7)
10 - osc ground
11 - duplex control
12,14,16 - ground (7)
13,15 - DC+ (13)

The numbers in paranthesis are the corresponding pin numbers to connect to on the 16 pin Maxtrac type radio [which can be easily translated to the correct corresponding pins for the CDM]

n1pfc · Post by **n1pfc** » Mon Sep 05, 2005 12:49 pm

Ok I must be thinking of a newer one that I've worked with recently. The one I was using supports 16.

Kurt

jayres · Post by **jayres** » Mon Sep 05, 2005 1:53 pm

Ok, time for another question... what control tone value should the console send for the remote to "see" that it needs to change to F1 or F2?

BPD109 · Post by **BPD109** » Mon Sep 05, 2005 2:06 pm

Do I need to change the command tone frequencies, as sent by the console (a Moto CommandPlus) to ensure that this will work correctly?

Post by **xmo** » Mon Sep 05, 2005 2:39 pm

The L1548 uses the standard 1950 F1 & 1850 F2 function tones so you should be good to go.

The GAI-Tronics ITA2000 tone remote adapter supports 15/16 frequencies.

n1pfc · Post by **n1pfc** » Mon Sep 05, 2005 3:15 pm

xmo wrote:The L1548 uses the standard 1950 F1 & 1850 F2 function tones so you should be good to go.

The GAI-Tronics ITA2000 tone remote adapter supports 15/16 frequencies.

Yup, know about that one.. /\/\ has another one out there that replaced the GAI-Tronics that does the full 15/16 as well.

Kurt

BPD109 · Post by **BPD109** » Mon Sep 05, 2005 3:41 pm

I think that takes care of the questions that I have.

Yall are great, thanks for the information.

Perhaps we should petition those who oversee the board to include some of this information in the miscellaneous section on Batlabs.

Thanks, again.

Post by **xmo** » Mon Sep 05, 2005 5:30 pm

".../\/\ has another one out there that replaced the GAI-Tronics that does the full 15/16..."
_______________________________________________________________

The current product is the L3276, Tone Remote Adapter, 16 frequency operation with 4-wire audio, $655.00 list.