Radio/Digital Modes: Difference between revisions
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Exploring digital modes can be done with a Linux or Windows computer, or with a phone. A radio helps, but is not necessary to get your feet wet. | Exploring digital modes can be done with a Linux or Windows computer, or with a phone. A radio helps, but is not necessary to get your feet wet. | ||
==The List== | |||
Listed below are a few different digital modes, how they work, and what software to use. | Listed below are a few different digital modes, how they work, and what software to use. | ||
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* TCP/IP over Packet | * TCP/IP over Packet | ||
==Slow Scan TV== | ===Slow Scan TV=== | ||
Slow scan TV turns images into audio signals that can be transmitted over long ranges. Software can translate images into sounds, and sounds into images. QSOs are made by exchanging a series of images. More notes on the [[SSTV]] page. | Slow scan TV turns images into audio signals that can be transmitted over long ranges. Software can translate images into sounds, and sounds into images. QSOs are made by exchanging a series of images. More notes on the [[SSTV]] page. | ||
To do | To do SSTV on the computer, use [[Qsstv]]. | ||
To do SSTV on Android, use [[Robot36]]. | |||
Here's an example of testing out an SSTV transmit and receive functionality without radios involved: | |||
<html> | |||
<iframe src="https://player.vimeo.com/video/178695218" width="640" height="360" frameborder="0" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe> | |||
<p><a href="https://vimeo.com/178695218">Slow Scan TV with Android</a> from <a href="https://vimeo.com/charlesreid1">charlesreid1</a> on <a href="https://vimeo.com">Vimeo</a>.</p> | |||
</html> | |||
===PSK=== | |||
PSK31 and PSK63 are a method of translating digital ASCII text into sound waves, which can then be transmitted and received by radios. Like SSTV, you don't need radios to test out communication between two nodes with this mode, you just need two computers, or a computer and a phone. | |||
On the computer, you can transmit/receive PSK signals using [[Fldigi]]. (Fldigi is a program with a huge range of digital modes available for you to use to transmit/receive.) | |||
On an Android, you can transmit/receive PSK signals using apps. [[DroidPSK]] works reasonably well, but is limited to PSK31 or PSK63. | |||
(Insert video here.) | |||
=Flags= | =Flags= | ||
{{RadioFlag}} | {{RadioFlag}} | ||
Revision as of 16:15, 13 August 2016
Radio modem for a microcontroller: PSK31, RTTY, APRS: https://github.com/zenmetsu/radioModem
HF voice: speech codec for 3200 bps and lower: https://github.com/freedv/codec2
- comes with FDMDV modem, PSK modem, and api for embedding in other programs
Overview
In ham radio, digital modes are ways of communicating digital information using radios. Normally, with analog communications, the operator and/or receiver radios will be operated by a human. The information being transmitted is human voice data, or some other information a human can understand (CW). With digital modes, the data being transferred is digital data, and the transmitting and receiving radios are operated by computers. These computers are able to translate analog signals to digital signals, or vice versa, using a modem (a modem modulates and demodulates signals).
Exploring digital modes can be done with a Linux or Windows computer, or with a phone. A radio helps, but is not necessary to get your feet wet.
The List
Listed below are a few different digital modes, how they work, and what software to use.
Digital modes:
- SSTV
- PSK31/PSK63
- MFSK
- Olivia
- RTTY
- APRS
- D-Star
- GSM
- GPRS
- TCP/IP over Packet
Slow Scan TV
Slow scan TV turns images into audio signals that can be transmitted over long ranges. Software can translate images into sounds, and sounds into images. QSOs are made by exchanging a series of images. More notes on the SSTV page.
To do SSTV on the computer, use Qsstv.
To do SSTV on Android, use Robot36.
Here's an example of testing out an SSTV transmit and receive functionality without radios involved:
Slow Scan TV with Android from charlesreid1 on Vimeo.
PSK
PSK31 and PSK63 are a method of translating digital ASCII text into sound waves, which can then be transmitted and received by radios. Like SSTV, you don't need radios to test out communication between two nodes with this mode, you just need two computers, or a computer and a phone.
On the computer, you can transmit/receive PSK signals using Fldigi. (Fldigi is a program with a huge range of digital modes available for you to use to transmit/receive.)
On an Android, you can transmit/receive PSK signals using apps. DroidPSK works reasonably well, but is limited to PSK31 or PSK63.
(Insert video here.)
Flags
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radio all things radio.
Ham Radio: Notes on General class license: General · Mnemonics/General Class License Digital modes: Radio/Digital Modes
Ham Radio Hardware (Radios): Kenwood TS 440S: Radio/Kenwood/TS440S Kenwood TS 570S: Radio/Kenwood/TS570S Yaesu VX-6: Radio/Yaesu/VX-6 Digital Modes on Raspberry Pi: RaspberryPi/Digital Modes Digital Modes on Arduino: Arduino/Digital Modes DVB-T USB SDR Dongle: DVB-T USB SDR
Ham Radio Software: Software defined radio: SDR Comprehensive list of ham software: Andys Ham Radio Linux Direwolf (soundcard TNC/APRS modem): Direwolf Echolink (internet repeater system): Echolink Qsstv (Slow scan television): Qsstv Fldigi (fast light digital modes): Fldigi Xastir (APRS/AX25/TNC): Xastir RadioHead (packet library for microcontrollers): RadioHead
Category:Radio · Category:Kenwood · Category:Yaesu Flags · Template:RadioFlag · e |