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A new ham should start with Digital or Analog Portable Radio?

I would suggest Analog FM only, to start with. Most repeaters are still FM, you won't be missing out on any coverage if you don't have digital. The digital landscape is still a bit fragmented, with ...
tomnexus's user avatar
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4 votes
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Modulation details of Digital Mobile Radio (DMR)

ETSI TS 102 361-1 Clause 10 is pretty explicit on that: 10.1.2 RF carrier bandwidth The radio system operates within a 12,5 kHz RF carrier bandwidth. … 10.2.1 Symbols The modulation sends 4 800 ...
Marcus Müller's user avatar
2 votes

Digital Modes Transmission Traffic Comparisons

I think this is an interesting question, but seems hard to answer. In the USA, perhaps you could FOIA the FCC to see what their monitoring stations cover and/or if they collect any data on this. ...
natevw - AF7TB's user avatar
2 votes

Help with ZaStone D900

To answer each point in turn: DMR radios are different from "normal" ham radio equipment in that it uses a digital voice encoder/decoder rather than the more traditional FM analog voice mode that you'...
WineSoaked's user avatar
2 votes
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DMR code plug for Anytone d878uv

I did a web search for "new york code plugs" and found a bunch from various sites: N2CID Digital Repeater Network Hudson Valley Digital Network no Anytone plugs yet BridgeCom Systems I ...
rclocher3's user avatar
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2 votes

DMR Repeated Audio Packets

Repeating the last frame to fill in holes from missing frames is a common digital voice technique. For small rates of frame loss, repeating a frame now and then is less noticeable than silence.
Phil Frost - W8II's user avatar
2 votes
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Is roaming strictly a DMR feature or does it also relate to analog?

This handheld radio requires you program in all the repeaters you want to use, so it already knows what is available and could, in theory, check GPS or it could check to see if there's a usable signal ...
Marcus Müller's user avatar
1 vote

Is roaming strictly a DMR feature or does it also relate to analog?

The radio can be programmed for DMR operation, or for standard analog repeater (or analog simplex) transmissions; you do not gain any DMR features while using analog.
KMG365's user avatar
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1 vote
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Excessive frequency deviation for DMR handsets?

Verification through simulation of a DMR burst shows that the excessive frequency deviation is caused by the overshoot from the pulse shape filter ($\alpha$=0.20). The DMR modulator uses a RRC at the ...
BigBrownBear00's user avatar
1 vote

Excessive frequency deviation for DMR handsets?

Is it expected that low cost handsets have excessive frequency deviation? No. Such a transmitter wouldn't work with standards-compliant receivers. Most symbol decisions would end up being wrong, ...
Marcus Müller's user avatar
1 vote

Repeater Amplifiers DMR vs Analog

So... really what you want to shoot for with a digital system is relative signal consistency between among the 1's and the 0's. With that in mind, recall that: Class A amps are pretty linear, ...
webmarc's user avatar
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1 vote

Brandmeister API - How to get the Last Heard from the API

Stephan from BM responded with the API does not provide last heard.
Zippy's user avatar
  • 121
1 vote

Can the AT-D878UV be programmed for dPMR channels?

I'm tempted to believe that using dual time slots (DCDM) mode might work with dPMR, since you are no longer bothering with TDMA. However, I couldn't find anything in my research. Try switching the AT-...
Expectator's user avatar
1 vote

Did I enter my digital ID in Hytera PD785G?

The easiest way is if you send a private call to 9990 (parrot) in brandmaister network and see the actual traffic on brandmaister's site.
Gábor's user avatar
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1 vote

Help with ZaStone D900

The radio you received is a UHF DMR HT. If you have a DMR repeater in your area, you will be able to do some testing of the radio. You can locate a repeater by visiting RepeaterBook. The first step ...
Glenn W9IQ's user avatar
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1 vote

Blocking a specfic DMR ID

I don't know any radio firmware that would support blocking a specific ID. It would be easy to implement in MMDMHost. Call Alert is a ringer function. If a radio receives a call alert signal then it ...
Gábor's user avatar
  • 136

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