Alright I think it's answered enough for that. Thanks y'all for the input
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Tytera TYT/Tytera MD380 DMR HT
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As others have explained, a carrier at 5 watts is a carrier at 5 watts. When a 5-watt analog radio is transmitting at 5 watts, you can easily measure it with most general purpose watt meters. When a 5-watt DMR radio is transmitting in its time slot, you should read 5 watts on the meter if the meter is fast enough to catch the time slot--however, most general purpose watt meters are not fast enough.
I have seen the difference in coverage between analog and digital explained like this: As an analog signal presents a lower and lower amplitude at the receiver, it becomes gradually more difficult for the receiver to copy the signal and you eventually get to the point where the signal drops into the noise. OTOH, a digital signal, depending on the modulation, may still be detectable and decodable by the receiver at signal amplitudes where the analog signal is mostly static. The analog signal appears to fade away while the digital signal appears to remain copyable until it abruptly disappears. This is known as the "digital cliff".
So, the digital radio isn't necessarily transmitting with any more power than the analog signal, but the digital signal gives the impression that it was transmitted with more power because it's still copyable at greater distances or lower received amplitudes than the analog signal.
kayn1n32008
ØÆSØ Say it, say 'ENCRYPTION'
Forward Error Correction. RF is RF. What and how you modulate the RF is what is going to dictate how far it goes. The advantage to digital is that you can usually still decode signals that had it been analogue would only sound like static. I have been able to get full audio recovery with a signal that would only light up the RX LED on a XPR-6550. Had it been analogue, i would not have been able to understand what the person was saying.
Thank you for clarifying this
Do these radios have MDC 1200 out of curiosity?
They don't, I hope to see it as a future addition though.
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It is but it's useful for signaling that isn't the dragged out DTMF and can be used for repeater access in some cases.
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Yeah it's worth emailing them for an input for an idea, but like Voyager said that format isn't as popular as it once was and for a 164 dollar on average radio that's from China... Yeah.. It's not looking like it
Why is MDC-1200 a dying format
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It's like any technology that has a newer better alternative. MDC was better than MODAT, so MODAT died. MDC offered more details and could do more than MODAT, so it won out.
Digital signaling can do lots more than MDC, so MDC is beginning to die. Sure there are lots of people out there still using it, but it will become less used as time goes on.
Most people would rather have the ability to do full-on text messaging, rather than just a few programmed messages in their radios. Plus there is no noise for the users to hear or try to mask with DOS.
jeffm77
Member
Question for you guys, Ok, I am trying to program my digital contacts. I go to digital contacts, then type in the name, leave the group call set to group call, because the system is set up as group call, now, I have several that use TG ID 1. When I enter my TG name and leave everything set to group call and I put in the 1, I get an error saying already in use and it automatically sets it to a 2. So, can i only use TG 1 once? Because if so, that really sucks. As I have several things around me that use the TG#1 on group call. I did notice that I can change to group call, all call, and private call. I tried that already and get nothing. So, how do I monitor everything that uses the same TG #? Thanks all. Jeff
If it's a group call, just put it in once and then under the Channels Information, you make a new channel and point it back to the Digital Contact. You can do this for as many contacts that you have using the same Digital Contact. Just name them different names.
Once that is done, you go to the Zone Information folder and add in all of the channels for that zone.
Example:
Hospital uses Digital TG 1
Ham uses Digital TG 1
Police uses Digital TG 1
You put in TG1 once under Digital Contacts and name it something like TG1.
Under Channels Info, you'd put the following:
Hospital - 468.000, color code, slot, etc. - Point back to Digital Contact TG1 or whatever you named it.
Ham - 445.000, color code, slot, etc. - Point back to Digital Contact TG1 or whatever you named it.
Police - 460.000, color code, slot, etc. - Point back to Digital Contact TG1 or whatever you named it.
Under Zone Info:
You could add in whatever channels you want in each zone, whether you want police in one zone and ham in another, or if you want them all in one zone.
Once that is done, you go to the Zone Information folder and add in all of the channels for that zone.
Example:
Hospital uses Digital TG 1
Ham uses Digital TG 1
Police uses Digital TG 1
You put in TG1 once under Digital Contacts and name it something like TG1.
Under Channels Info, you'd put the following:
Hospital - 468.000, color code, slot, etc. - Point back to Digital Contact TG1 or whatever you named it.
Ham - 445.000, color code, slot, etc. - Point back to Digital Contact TG1 or whatever you named it.
Police - 460.000, color code, slot, etc. - Point back to Digital Contact TG1 or whatever you named it.
Under Zone Info:
You could add in whatever channels you want in each zone, whether you want police in one zone and ham in another, or if you want them all in one zone.
jeffm77
Member
ok so i go to my contact list table and create a tg just called tg 1. i program my frequencies, then under the digital data column where it says contact name, i select tg 1 from the list. and i can add as many users that use tg1 as i want?
That would be very handy for sure. It would almost need to be setup like the Astro series CPS does it... talkgroups per digital system. That would also allow for different radio ID's per system, which people have been after for quite a while...
It should already be capable - that's all in firmware and programming. I think it's more of Motorola saying "no one in x market will need to do that" and everyone took trend. I'd personally love it because when making channels I have to get creative. There's 4 repeaters (two digital two analog) in Lexington alone - can't call all channels "Lexington" even if they're in different zones. So I have to name them all something goofy.
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Yeah, I'm in the same boat. Plus everyone around here likes to use the common talkgroup numbers... 1, 10, 100 etc. So you can't label them to a specific user.
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