[arm-allstar] Setting Up Motorola CDM-1250 for Allstar

[Michael Webb]

Personally I run my Motorola Maxtrac and others with pin 8 as low, then
invert the PTT so that when the radio is off, it's not making asterisk
think it needs to be keyed and thus not locking up any Nodes you may be
connected to.

On Mon, Jan 24, 2022, 11:54 AM "Chris via ARM-allstar" <
arm-allstar at hamvoip.org> wrote:

> Re. my post yesterday regarding CDM-1250, Maxtrac interface, PI running
> Hamvoip:
>
>
>
> Apparently the settings you need are as follows:
>
> (Please advise if any of these are incorrect or if I need to add anything
> else. I’ll be forwarding these to the guy selling me a used radio.)
>
>
>
> 1.      On the Radio configuration tab, Accessory Pins tab:
>
> A. Set Pin 3 to “DataPTT” (input), “Low”.
>
> B. Set Pin 8 to “PL” and “CSQ Detect”…  Set active level to “High”.
>
>
>
> 2.      On the Accessory Configuration tab:
>
> A.      Set Rx Audio Type to “Flat Audio”,
> B.      Set Data PTT Audio Source to “Flat Tx Audio”
>
>
>
> 3.      On the Conventional Personality tab:
>
> A.      Set your preferred alias and channel bandwidth to “25 KHz”.
> B.      Set TX and RX frequency to: (I’m using 446.140 MHz)
> C.      Set TX and RX PL to “CSQ”, frequency: 100 Hz (or whichever PL you
> want).
>
>
>
> 4.      On the Options Tab
>
> A.      Time Out: 5 minutes or similar.
> B.      Low Power TX: whatever the lowest available setting is… 20 W?
>
>
>
> 5.      Advanced Tab: Set Emphasis to “NONE”.
>
>
>
> It might be a good idea to program in a couple channels near your
> frequency specified above, in case someone complains and asks you to move
> your node elsewhere, so I’m going to add 446.125 MHz and 446.155 MHz
>
> The above settings were found at a link Patrick, N2DYI sent along. Thanks
> Patrick!
>
>
> https://www.parkerradio.org/community/projects/allstar-node-from-motorola-cdm-1250-radio/
>
>
>
> 73
>
>
>
> Chris
>
>
>
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