Encompasses a variety of digital modes that seek to modulate a digital signal with the sound of the human voice.
Digital voice modes include: d-star, echolink, dmr, nxdn, p25, yaesu-fusion
Digital voice modes are a subset of digital-modes.
Questions tagged [digital-voice]
12 questions
14
votes
4 answers
Is is possible to operate D-Star from a software-defined radio?
What is preventing a software-defined radio from transmitting the D-Star protocol?
Paul V
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7
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1 answer
DMR / DSTAR / P25 Software Encode / Decode
The large VHF / UHF digital voice communication modes all require the same AMBE vocoder chip from dvsinc. This surface mount chip can be aquired standalone for a relatively high price or all of the required encode / decode electronics can be…
Skyler 440
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7
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8 answers
VHF/UHF digital single-frequency repeater without duplexers?
Some digital voice protocols are time slotted (TDMA), i.e. the transmitter of a station is not on all the time, and multiple stations may transmit digital voice on the same frequency at the same time by transmitting small digital bursts, one by…
oh7lzb
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5
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2 answers
Digital transmission sounds
I'm playing with an RTL-SDR dongle and an LNA, on Linux Mint with GQRX and DSD
A lot of frequencies show digital transmissions, which the DSD is not converting. I don't whether it is a format DSD cannot convert, encrypted, or just distorted.
Is…
KP4MCG
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3
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2 answers
P25 Digital vs. Analog
Recently, I was given a Motorola XTS 5000 (Model 1) P25 radio to play around with. It has several local repeaters already programmed into it. It is set for "Mixed Mode", which will receive either a P25 digital signal or analog. All the local…
Lance
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3
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2 answers
HD quality voice?
Are there any existing codecs or modes, or are hams experimenting with modes that provide better than telephone/radio quality sound?
It seems like there's a lot of opportunity here to stick to narrow band modulation schemes but at the same time…
Adam Davis
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2
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1 answer
Preferred signal report format for Digital Voice?
When using FreeDV or other digital voice modes, what's the preferred signal report? The software has a single SNR number, but that fluctuates quickly. Since it's a digital mode, you either get the transmission, or you don't, so the RSQ system…
scruss
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Kosher to setup a D-Star (or DV) repeater on 10m?
Equipment availability and other logistics aside, is it kosher in the US to fire up a D-Star (or other digital voice) repeater in the appropriate portion of 10m? I haven't been able to find any indication one way or another so far.
webmarc
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2
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3 answers
Frequency for UHF hot spot in the US
Approximately what frequency should my UHF Pi-Star be set on in the US? Is there a standard?
Dennis
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Is PC to Digital Radio possible, is there an existing solution?
Is it possible to setup up an interface from a PC to a digital radio that is able to communicate with a Hytera PD702 handheld (450-520MHz) or like type radio? Or are there off the shelf radios that can manage this out of the box that have a USB…
jono2010
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2
votes
1 answer
DVMega / DVDongle with a TNC connection to radio
What I want to do is add digital voice (DMR, D-Star, Fusion) capability to an existing dual band mobile or HT. Similar to adding APRS functionality using APRSDroid and a bluetooth TNC. Reading here, I understand this can't be done purely in software…
kbyrd
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vote
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DMR Repeated Audio Packets
I have been performing several weak signal tests using the DMR mode.
One of three things seems to happen when a signal gets weak.
Audio is completely dropped for duration of weak signal.
Audio becomes distorted and garbled giving the "R2D2" sound…
Skyler 440
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