[App_rpt-users] Anyone using MDC1200 for control?

Don Russell w9drr.ham at gmail.com
Mon Mar 22 17:44:50 EDT 2010

Wouldn't it be better to use mdc status messages for control? The unit
id is sent every transmission.
You really wouldn't want a dtmf macro activated every time a unit
transmits.. that could be real bad if you slip on the ptt.
I can see it would be pretty easily to generate a couple commands by
accident. I think MDC status messages are more
up that alley.

My MDC-1200 biggest wish is an "MDC squelch" that will compare the
unit-ID to a list, if in the list allow the audio to repeat.

A local ham repeater (fishfar) only allows access based on a known
list of  Unit IDs.

My concept would be status-1 to enable the repeater, status-2 disable,
status-3 reboot the server, status-4 enable mdc-squech,
status-5 enable pl squelch, status-6 send "ffff" all call. Something
like that....

It would be really cool if we could also have the ability to generate
MDC messages. a command like rpt mdc 2090 ffff which would generate
an ffff all call on node 2090 would be really appreciated.

Being able to watch the output of the decoder into a log would help
find what codes are being seen.

In the mean time, I recorded my ht sending the "all call" and play the
wav file back. It does activate all the radios each time it's sent.

Don Russell, CBRE
W9DRR - ARRL OES, Technical Specialist

On Mon, Mar 22, 2010 at 14:12, KT9AC <kt9ac at ameritech.net> wrote:
> Yes, that is correct.
> Jim Duuuude wrote:
>> okay, What I will do is have a list of "Unit-ID"'s that
>> can correspond to DTMF macros. In other words, you
>> could make unit ID 1234 be the same as pressing *32000
>> or something like that.
>> Is that pretty much what you had in mind??
>> ----------------------------------------
>>> Date: Mon, 22 Mar 2010 13:42:50 -0500
>>> From: kt9ac at ameritech.net
>>> To: telesistant at hotmail.com
>>> CC: app_rpt-users at qrvc.com
>>> Subject: Re: [App_rpt-users] Anyone using MDC1200 for control?
>>> Thanks Jim for the reply and interest. Basically I just want to
>>> send/decode the Unit ID that will be used as a control function (i.e.
>>> macro to connect up to site "X"), activity timer (link transmit
>>> authorization) or repeater access control. I like MDC since its a
>>> fixed-length packet, has error-correction built-in and once programmed
>>> in to a radio mode doesn't require using a DTMF mic while mobile.
>>> Tony
>>> Jim Duuuude wrote:
>>>> Well, it could very easily. Im game.. (be sure you
>>>> pronounce that right) :-). What kind of MDC-1200
>>>> message type are you intending use (excuse the
>>>> possibility of this being a dumb question, but
>>>> the only thing Im familiar with MDC-1200 for is
>>>> UnitID).
>>>> ----------------------------------------
>>>>> Date: Sat, 20 Mar 2010 20:17:52 -0500
>>>>> From: kt9ac at ameritech.net
>>>>> To: App_rpt-users at qrvc.com
>>>>> Subject: [App_rpt-users] Anyone using MDC1200 for control?
>>>>> Hi Everyone,
>>>>> New to the group and Asterisk; got my first node online today. I know
>>>>> there are libraries available from Matthew Kaufman for MDC1200 decoding,
>>>>> but haven't ventured into the code just yet. Does anyone have examples
>>>>> of what works and how difficult it was? I want to simply send an MDC ID
>>>>> into Asterisk to control my links/macros versus DTMF.
>>>>> Thanks!
>>>>> Tony, KT9AC
>>>>> _______________________________________________
>>>>> App_rpt-users mailing list
>>>>> App_rpt-users at qrvc.com
>>>>> http://qrvc.com/mailman/listinfo/app_rpt-users
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