tones
18 links
- CB radio in U.K. discussion
- news and views from the UK about the course of CB in the U.K. and Europe.
[ Hits: 1755 | Votes: 5 | Rating: 5 ]
- Beginners Guide to Repeaters
- An article about how to operate repeaters. How to call someone on a repeater, how to program your HT Radio setting the correct offset, setting tones, and several information on etiquette, lingo, abreviations and codes
[ Hits: 108 | Votes: 0 | Rating: 0 ]
- Evolution of Car Radios: From Marconi to Motorola
- his historical account traces the development of car radios from Marconi's mobile wireless telegraph station on a steam engine vehicle in 1901 to Motorola's iconic car radio models in the 1930s. It highlights key milestones such as Alfred Grebe's radio-telephone experiments on Long Island and the introduction of Marconi-Phone 8 radios by the Daimler Company in England. The narrative explores technological advancements, including the transition from TRF to Super-Heterodyne circuitry and the integration of push-button controls. The evolution from vacuum tubes to transistors and compact discs is also documented, showcasing the continuous innovation in automotive entertainment systems.
[ Hits: 51 | Votes: 1 | Rating: 1 ]
- Mt-63 technical description
- The MT-63 modem, constructed around a high speed DSP processor, either in a dedicated external DSP unit like the Motorola EVM, or in PC software using the PC sound card, transmits 64 tones spaced 15.625 Hz apart, in the 1 kHz bandwidth.
[ Hits: 632 | Votes: 0 | Rating: 0 ]
- Domino DF mode
- DOMINO DF is a sensitive mode which, due to its incremental frequency keying and thanks to its interleaved multiple tones sets, is easy to tune and is few sensitive to interference and ionospheric effects.
Domino faeture a great signal to noise ratio.
[ Hits: 223 | Votes: 0 | Rating: 0 ]
- Introduction to MFSK and the MFSK16
- A new weak signal DX mode for Radio Amateurs, employing M-ary FSK, phase continous tones and convolutional coded FEC.
[ Hits: 1792 | Votes: 11 | Rating: 6.73 ]
- DTMF decoder
- A very easy to use program to decode DTMF dial tones found on telephone lines with touch tone phones. The DTMF Decoder is also used for receiving data transmissions over the air in amateur radio frequency bands.
[ Hits: 7949 | Votes: 14 | Rating: 4.79 ]
- MT Hell
- MT-Hell software for 16 bit Soundblaster cards. Sends seven parallel tones with careful dot shaping for minimum interference, and transmits a very nice sound by G3PPT
[ Hits: 591 | Votes: 0 | Rating: 0 ]
- The HotPaw Morse Code Decoder
- The HotPaw Morse Code Decoder decodes the tones of Morse Code characters from audio input, and transcribes the results into text. Commercial App for MacOS X. Price USD 19.99
[ Hits: 916 | Votes: 0 | Rating: 0 ]
- Morse Tone Encoder
- Generates Morse tones using the Soundcard. A neat tool for sending out short sequences of Morse tones.
[ Hits: 1269 | Votes: 6 | Rating: 2.83 ]
- Multi-Instrument
- Contains a PC sound card based signal generator. It can generate functions, multitones, arbitrary waveforms, burst tones, MLS, DTMF, musical scales, white noise and pink noise, and frequency/amplitude sweep. Fully functional free trial downloadable.
[ Hits: 8421 | Votes: 16 | Rating: 5.12 ]
- 16 DTMF Tone Generator Keypad App
- This app will give you a 16 tone DTMF keypad and the ability to generate custom DTMF sequences, and set the duration and tone to silence ratio. Includes the characters 1234567890*# and the menu tones ABCD. You may enter a custom sequence via the keypad, soft keyboard, or speech if your device already has speech-to-text capability.
This is basically a touch tone telephone keypad, which may be of interest to amateur ham radio repeater operators
[ Hits: 729 | Votes: 4 | Rating: 7.75 ]
- DTMF encoder
- Generates dial tones using the Soundcard. A neat tool for sending out short sequences of DTMF tones.
[ Hits: 1612 | Votes: 4 | Rating: 1 ]
- DTMF Functions
- In Sysop mode, EchoLink can be configured to accept commands through the local receiver using DTMF tones
[ Hits: 251 | Votes: 0 | Rating: 0 ]
- Roger Beep
- This article describes a simple device to generate Roger Beep tones.
[ Hits: 1634 | Votes: 5 | Rating: 6.6 ]
- Connect a Morse key to the Raspberry Pi
- This tutorial will show you how to connect a Morse key to the Raspberry Pi GPIO pins, and how to write code to play tones when you hold the key down. You will also decode the Morse that you're keying so that it comes up on the screen.
[ Hits: 1029 | Votes: 3 | Rating: 6 ]
- Raspberry Pi ISS iGate
- This project is an APRS iGate for digipeater aboard the ISS. As the ISS pass over the iGate location, the TNC decoded the audio tones and creates data packets the Raspberry Pi can receive.
[ Hits: 486 | Votes: 1 | Rating: 10 ]
- USB Rig Interface
- This project is a USB Audio, Serial and PTT interface for rigs that does not directly support digital modes provided by applications such as FLDIGI, WSJT-X and JS8CALL. Plug these interface devices into your Windows or Linux laptop or Raspbian Raspberry Pi and you can send and receive digital tones to/from your rig and automate the frequency and mode control and PTT control.
[ Hits: 322 | Votes: 1 | Rating: 1 ]
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