digital390 links - and 19 categories
Antennas : Helical
- Helical Dipole for 40m
- An helical dipole made with 10,7 meters of wire resonating on the 40 meters band, by PY1ZFK based on a project by DL8VO
[ Hits: 838 | Votes: 2 | Rating: 5.5 ]
- VHF Cubical Quad
- A project for a four element cubical quad antenna for 144 MHz in portuguese
[ Hits: 1499 | Votes: 13 | Rating: 7.07 ]
- 20m Quarter Wave Vertical
- A quarter wave vertical antenna for 20 meters band, with a good swr on 200 KHz. This antenna is basically made from two lengths of emt conduit by N0EQ
[ Hits: 2945 | Votes: 4 | Rating: 3.25 ]
- PSKreporter displays the digital mode data of transmitting and receiving stations and displays them with additional information in selectable views.
[ Hits: 414 | Votes: 17 | Rating: 8.48 ]
- German association dedicated to digital radio communications
[ Hits: 329 | Votes: 0 | Rating: 0 ]
- BDM Club
- Club Belgium Digital Mode application for smartphone android is on line
[ Hits: 314 | Votes: 4 | Rating: 7.75 ]
- PSK31 HF Receiver in Charlotte NC USA
- This PSK31 receiver shows you the active HF bands and tunes itself to the busiest for live decoding of the digital signal. Located in Charlotte, NC
[ Hits: 2492 | Votes: 16 | Rating: 2.38 ]
- Have a Great Time with JT9
- JT9 is a amateur radio weak-signal digital mode can give little pistol stations big gun results, ARRL article by W4GAL
[ Hits: 386 | Votes: 0 | Rating: 0 ]
- Packet Radio FAQ
- Introduction to packet radio and answers to common questions about this digital mode and about services you can use by VKFAQ
[ Hits: 283 | Votes: 0 | Rating: 0 ]
- ScopeDSP analyzes sampled-data signals in the time and frequency domains. It can generate, read, write, window, and plot real and complex digital data signals.
[ Hits: 741 | Votes: 1 | Rating: 1 ]
- Digital Speech Decoder
- An open source software decode various xMBE based modes. It support decoding QPSK, C4FM modes such as P25 Phase 2 (TDMA), MotoTRBO, NexEDGE, ProVoice and others more.
[ Hits: 3494 | Votes: 40 | Rating: 5.24 ]
- HF Digital Voice for Radio Amateurs.
FreeDV is a free application for Windows, Linux and MacOS that allows any SSB radio to be used for low bit rate digital voice.
[ Hits: 4782 | Votes: 6 | Rating: 7.17 ]
- Codec 2
- Codec2 is an open source low bit rate speech codec designed for communications quality speech at 2400 bit/s and below. Applications include low bandwidth HF/VHF digital radio and VOIP trunking.
[ Hits: 630 | Votes: 5 | Rating: 7.2 ]
- ScopeIIR: an Infinite Impulse Response (IIR) digital filter design tool for Windows. It designs high-order IIR filters based on analog filter prototypes, and can design lowpass, highpass, bandpass, and bandstop filters.
[ Hits: 670 | Votes: 2 | Rating: 5.5 ]
- hamOS is a live and installable Debian based linux respin for Amateur Radio Operators. It is intended for new users with little or no linux experience. hamOS contains a variety of pre-installed applications for amateur radio like logging, homebrewing, digital modes, and more.
[ Hits: 2596 | Votes: 6 | Rating: 7.67 ]
- Voice Keyer Deluxe
- VoiceKeyDeluxe (VKD) will convert your sound card into a powerful and versatile digital voice keyer for contest or EME operations by N7QJP
[ Hits: 1056 | Votes: 1 | Rating: 8 ]
- Using Frequency Counters
- A tutorial on using RF frequency counter, how a digital frequency counter works, includes frequency counter specifications and best practices in setting counter accuracy and resolution
[ Hits: 466 | Votes: 0 | Rating: 0 ]
- SDR Receiver using a Tube
- The build was an experiment to see if a tube receiver could be stable enough to receive digital shortwave radio broadcasts.
The tube acts as both an oscillator and mixer, so the receiver is a type of direct conversion receiver.
[ Hits: 153 | Votes: 1 | Rating: 10 ]
- How to measure current
- An article on how to measure electrical current with a digital multimeter or analogue multimeter.
[ Hits: 213 | Votes: 0 | Rating: 0 ]
- Logic Analyzer
- Article on how to use logic analyzers for testing complex logic-digital circuits
[ Hits: 317 | Votes: 0 | Rating: 0 ]
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