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can ma/comdo simpluex

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Gilligan

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I'm actually glad he asked. I'm not real familiar w/ how a trunking system could do simplex, but the thought crossed my mind just yesterday. I saw some Spectra radios and how they can change to simplex at the touch of a button (talkaround?), but my guess is that it would not work on a trunked system. It's my understanding that the repeaters control all the frequencies, and [/B][/B]therefore all the radios. So I would say no matter what band the system is on (VHF-Hi, UHF, or 800), simplex/talkaround would only be for conventional channels. I do, however, think that a radio can have trunked and simplex in the same radio. Does anyone know how many different trunked systems can go into one modern radio, like say a Spectra? And can anyone answer this trunked talkaround question with certainty?
 
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N_Jay

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Trunked mode operation is is always duplex and usually repeated,
Almost all trunked radios can have conventional modes (Channels).
Almost all radios capable of conventional mode can have simplex channels.
All of this, if available, is able to be locked out by programming.

The number of modes, and systems varies by radio type.

Oh, and just to close the loop on teh original question, M/A-COM does make trunked and conventional radio equipment.
 

Gilligan

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N_Jay said:
Trunked mode operation is is always duplex and usually repeated
Usually? Please elaborate. How would it not be on a repeater? That was the main question I still have? I've never heard of simplex trunking.
 
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N_Jay

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Gilligan said:
Usually? Please elaborate. How would it not be on a repeater? That was the main question I still have? I've never heard of simplex trunking.

It is always duplex.

Some systems allow the console to operate the talkgroup in full duplex non-repeat.
 

jungle

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To reply to GILLIGAN's question regarding "One touch of a button can take you from trunked operation to (Talk around) simplex operation" Yes this is possible thru a programming function. When setting up the personality of each radio we define where we want to steer the radio to. We do this so that a field unit can "toggle" between a tRS and conventional quickly should the need arise to.
 

tfr

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Most (if not all) MA/COM radios can be programmed to have both trunked (EDACS, P25) and conventional sets. These cannot be used simultaneously but can be switched between with a touch of a button.
 
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