MDC and 2 tone call alert

[radioman2001]

This just came in as a request from our FD, we have APX8000 radios that presently have 2 tone call alert for page out, but now they want alphanumeric MDC encode on the same channel. After doing some reading I don't think it's possible. I was going to try and create a mini scan list that scanned the 2 channels one with MDC the other with call alert. The problem with that is there already is a scan list associated with the call alert channel. Maybe make the call alert channel priority channel one might do it. Any comments.

 

[BARNEYR]

Depending on which channel it stops on will determine if you get MDC or Call alert. I hate that you can't have both.

 

[GTR8000]

Conventional personality can be either MDC or Quik-Call II, not both simultaneously.

There is little point in creating a scan list with the same channel scanned twice, as you've got a 50/50 chance of landing on one signaling type or the other, and Murphy's Law dictates that the radio will never land on the one you want at the time you want it.

Do they not carry pagers? That is the solution for the QCII decoding. If they insist on having it in the radio, then they'll need to understand that there are going to be two channels in the radio...one for alerting, and one for operating with MDC. Scanning is not the solution, as it's not recommended to scan for QCII as the chance of missing a page is not insignificant, depending on what else is being scanned.

If they don't have a pager, their best bet is to sit on the QCII enabled channel without scanning so they won't miss an alert. They can switch to the MDC enabled channel if alerting is not critical.

 

[radioman2001]

Yea I know I told them to buy more pagers, but as usual we are broke again. Well for the most part the radio will stay on the main channel, I can add the pager channel as a priority one channel, but with TX depending on channel select knob. Also make the QC channel RX only so they can't transmit on it.

 

[radioman2001]

Ok so doing it this way does work, also got the alpha numeric MDC ID to work.

 

[GTR8000]

Well for the most part the radio will stay on the main channel, I can add the pager channel as a priority one channel, but with TX depending on channel select knob.

So when they're on the "main channel" i.e. the one with MDC, you're going to have them scan with the QCII channel set as Pri1? In other words, whenever someone keys up with MDC the radio is going to prioritize the QCII channel and they won't see the MDC ID/alias decoded on their radio? Not sure that makes a whole lot of sense.

 

[radioman2001]

I am more interested in the radio decoding the 2 tone Call Alert. They don't need to know who the MDC ID is, I need the MDC TX not RX.

 

[AK4FD]

Well then you can set the signaling in the Personality for RX to be QCII and the TX to be MDC-1200, in that aspect it will do "both" but as far as receiving MDC-1200 & QCII Tones simultaneously no it won't, has to be either/or. If I'm understanding correctly that's what you want to achieve.

 

[radioman2001]

Are we talking about an APX? There is no separation of RX/TX signalling. Non Astro signalling type set to QC any changes to Sel Call or MDC cause the lettering to go red.