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Thread: Minitor pagers: Two frequency monitor with priority?

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    Default Minitor pagers: Two frequency monitor with priority?

    I manage a large public safety radio network including VHF paging infrastructure but don't have any involvement with pager programming. Can Minitor 5 and 6 pagers be programmed with two frequencies? Is it possible to make one frequency be priority so a page is not missed while parked on the other frequency?

    Here is the situation:
    P25: 14 site 800 simulcast Astro 7.17, 16 channels per site. 95% portable in building coverage so the TRS is used for nearly all calls including fire ground.
    Paging: 10 sites Quantar based VHF simulcast, stations TX only, channel A is paging patched to 800 fire main (so field pagers set to open mode may monitor the fire main traffic), channel B is weather siren activations. Both Quantars at the sites are connected to a combiner and share the same 6db dipole array antenna. In the coming years this will change from circuit based Quantar to IP based GTR.

    The future:
    Call loads are increasing, the main gets congested at times, so the fire chiefs wish to explore moving all paging off the fire main. All TRS subscribers would need to be re-programmed to add the new paging talkgroup so tone outs could still be monitored on the 800 side (plus some agencies are using APX digital tone signaling for activations now). Pagers will no longer be able to monitor the fire main in this scenario. Unless we move the fire main patch to frequency B (siren activations, very infrequently used) and if pagers are re-programmed to allow two frequencies then they could monitor the main on frequency B while receiving pages on frequency A. But in this scenario if a fire fighter moves the pager to mode 2 / monitor frequency B and a page airs out on frequency A the pager would not trip. Unless the pager can be programmed to priority monitor frequency A. Is it possible with 5 and 6s? Some agencies are now all on 6s others still have a mix of 5s. Also for what its worth we explored Unications, they were not favorably reviewed due to size and battery life.


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    Quick answer is yes, both Min 5 and Min 6 pagers have priority scan - IF they are multi channel. The Min 5 was available in either one channel or two channel versions, you would need the two channel obviously. The Min 6 is available in one channel and five channel versions, and has multiple scan modes of any TWO of the channels including priority. I have used the priority scan sucessfully for separate paging and talk channels for many years. Also for a situation with two separate counties, two separate paging channels - the Min 6 works well for this situation. You will have to determine if the existing pagers each agency has are one channel or multi channel versions. For Min 5 the last digit of the model number designates this - 8 is single freq, 9 is two freq. For the Min 6 there are two versions, A UL/IS version and a non-UL version. It makes no difference, the VHF model is A03JAC and the next digit designates number of channels - 8 is for single freq and 9 is for five freq.

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    Thank you that detailed reply, it is very helpful. "Paging and talk channels" are great verbiage for us to use in this scenario.

    Can 1 frequency Min 5 be upgraded to 2 frequency, and can 1 freq Min 6 be upgraded to five freq? Or will the agencies need to purchase new five freq Min 6 units?

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    It is a software change to make a Minitor 5 a 2 channel unit. Not sure if that upgrade can be purchased or not. There was a version of programming software I saw tears ago that let you change a 1 channel to a 2 channel.

    I am not familiar with the 6's.

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    None of those methods are supported by Motorola, so if you have to send a pager back to the factory, it will be defaulted.
    "God as my witness" - Jeremy Dewitte - Felon

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    Quote Originally Posted by kb0uxv View Post
    Thank you that detailed reply, it is very helpful. "Paging and talk channels" are great verbiage for us to use in this scenario.

    Can 1 frequency Min 5 be upgraded to 2 frequency, and can 1 freq Min 6 be upgraded to five freq? Or will the agencies need to purchase new five freq Min 6 units?
    Officially, no. There is software floating around in the wild that will change a Min 5 from a single freq to a two freq model, but it has to be used very carefully as it also affects the tuning of the receiver. Therefore, if one attempts to do a mass reprogramming by simply cloning a unit it will copy the tuning data and serial number of the host unit into all of the units down the line. Thus the tuning will be incorrect and the electronic serial number will not agree with the label. Since the Min 5 is fraught with issues and is short on life support I have recommended to all of my customers that any expenditure on Min 5's is not advised. (The Min 6 has already been out for over six years so the 5's are getting really old.) As for Min 6's, there is no known way to upgrade the model. If you were to arrange a mass purchase of fifty or more 5 freq Min 6's the cost should be in the area of $360 each with standard warranty. If this information is useful please use the "thanks" button below.

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