CDM1550 Data Only

[jorenwendschuh]

What's the difference between the normal CDM (Waris) series, and the ones sold for data-only, for SCADA and such? Is there a different model number? external differences?

[AEC]

I set up several CDMs for use as water level data transmitters between single sites and multiple locations. Since the internal speakers are not used, I simply unplugged them, and programmed the radios to output data to the accy. connector. Program the radio for external mic audio, program the accy pins and set your levels accordingly.
I am not near the computer, so I can not open a codeplug and walk you through it at this time, but if you have professional CPS, there are several locations that point to this.

[wavetar]

What's the difference between the normal CDM (Waris) series, and the ones sold for data-only, for SCADA and such? Is there a different model number? external differences?

The "data only" version has the 16-channel LS+ chassis, and comes with a blank control head. You save about $150 by omitting the standard control head & microphone versus purchasing a 'regular' CDM1550-LS+. I believe the model# is the same, as the blank head is an option.

[wavetar]

Pics are always nice:

[jorenwendschuh]

Ah! Thank you. Do you know if there were any modifications to the radio itself? As in, would swapping out the control head with a 'normal' CDM1550 head restore all functionality? I've not seen a schematic for this control head in any of the service manuals I've gone through either - is it just a blank face, or does it have a PCB in it?

[thebigphish]

I noticed an above post said "program for external mic audio"....will this unit function if all the connections are made with the accessory connector, like a RICK?

[wavetar]

Ah! Thank you. Do you know if there were any modifications to the radio itself? As in, would swapping out the control head with a 'normal' CDM1550 head restore all functionality? I've not seen a schematic for this control head in any of the service manuals I've gone through either - is it just a blank face, or does it have a PCB in it?

I've never seen an actual unit, just the MOL announcement, which I posted as the pic. I assume there must be some sort of pcb in it, since much of the actual 1550 'smarts' normally reside in the head. As well the announcement states "existing CDM1550LS+ chassis as well. Thirdly, they list both the 'blank' and 'standard' control heads as available options.

Not sure on the RICK question, but highly likely.

[Will]

I noticed an above post said "program for external mic audio"....will this unit function if all the connections are made with the accessory connector, like a RICK?

The R. I.C.K. is obsolete....

This is one replacement. Lots of them in service.
The ID-O-Matic II not only gives you the necessary CW ID, but it also processes audio and has all the timers you'd need for making a repeater with a pair of MaxTrac, Radius, GM300, or CDM mobile radios. This article shows some circuit improvements and how to wire the accessory connectors.
http://www.repeater-builder.com/maxtrac ... k-rev2.pdf

[thebigphish]

I'll trade you 3 RICKs for 3 ID-O-Matics II.