hf digital

hf digital

Pages: [prev] 1 2 3

• Short Multiband Dipole Array - A multiband shortened fan dipole. This page offers and online calculator that can be really useful if you plan to homebrew a multiband dipole for low HF bands and you don't have all needed space for the full lenght. It combines multiband dipole with loading coild for selected bands.
  [ Hits: 229 | Votes: 0 | Rating: 0 ]

• EggBeater Antenna for VHF UHF - This antenna was conceived mainly for high-speed digital transmission via satellite. The antenna is made of two full waves loops , mounted at right angles to each other. Then coupled together, 90 degrees out of phase over a horizontal circular reflector. With this configuration the antenna is omni directional and circularly polarized.
  [ Hits: 232 | Votes: 0 | Rating: 0 ]

• N8FQ sked page - A multi sked portal offering sked spots grouped by CFO CW Practice CW Academy Development Digital FISTS Down Under FISTS Scouting LoTW/eQSL MARS NAQCC NRR Other Images POTA Ragchew Satellite SKCC TBDXC VHF/UHF
  [ Hits: 272 | Votes: 0 | Rating: 0 ]

• KD8CEC Amateur Radio Blog - A personal blog about amateur radio activities, including homebrew, bitx, ubitx, mcHF, JT65, FT8 and more digital communications.
  [ Hits: 254 | Votes: 1 | Rating: 10 ]

• F8KFP Radio Club Urtois - Le radio club de la Cote Basque, amateur radio pages about HF / VHF / UHF / digital modes, Projets with arduino and raspberry , training classes.
  [ Hits: 299 | Votes: 0 | Rating: 0 ]

• Feld Hell Club - A club dedicated to Hellschreiber, or Hell, a unique, HF digital mode for sending and receiving text using facsimile technology
  [ Hits: 384 | Votes: 0 | Rating: 0 ]

• Anytone Tech Web Site - Amateur radio, commercial, two way handheld and mobile transceiver manufacturer produce VHF UHF analogn and digital DMR two-way radio
  [ Hits: 317 | Votes: 1 | Rating: 10 ]

• Ribbit digital text messaging mode for HF/VHF/UHF - Ribbit is a novel digital text messaging mode for VHF/UHF communications for recreational and emergency use which radically increases the density of information transmitted by spectrum used. It leverages the computing power of the modern smartphone to increase the capabilities of any Handy Talkie without requiring any additional hardware or cable. A Ribbit message is fixed in duration at 1250 milliseconds. It is sent over audio modulation with a 2kHz bandwidth centered on 1.5kHz. It is preceded by 400ms of white noise to open analog squelch circuits.
  [ Hits: 133 | Votes: 1 | Rating: 10 ]

• FreeDV - Digital Voice for HF bands - FreeDV uses an audio codec as a software based modem to decode and encode the voice and text data from your computer. The data is encoded and then is transmitted over the HF radio using AF signals that can then in turn be decoded by the receiving station.
  [ Hits: 92 | Votes: 0 | Rating: 0 ]

• JT65 ‐ HF Operation Guide - Get familiar with the basic operating procedures for using the JT65 mode of HF digital communications, a 35 pages PDF file.
  [ Hits: 871 | Votes: 0 | Rating: 0 ]

• ICOM IC-705 and Raspberry Pi - A portable setup of the ICOM IC-705 with portable VHF UHF and and HF Alex Loop antenna, managed with a portable Raspberry PI 3 setup.
  [ Hits: 254 | Votes: 2 | Rating: 10 ]

• Retevis RT3 Tytera MD-380 Modifications - Collection of modifications for the Retevis RT3, a monoband handheld transceiver for DMR (digital voice) and analog FM. It is almost identical to the Tytera MD-380.
  [ Hits: 106 | Votes: 0 | Rating: 0 ]

• ICOM ID-880H QST Review - QST product review of the ICOM ID-880H VHF UHF Digital Mobile Transceiver
  [ Hits: 418 | Votes: 0 | Rating: 0 ]

• Scanning frequencies - HF digital mode transmissions, voice transmissions in HF and VHF Bands collected in several XLS files by Relic Radio communications
  [ Hits: 138 | Votes: 0 | Rating: 0 ]

• Wavecom W-CODE - W-CODE is a professional digital mode decoder system capable to decode many digital signals on HF, VHF/UHF, SHF and SATELLITE bands.
  [ Hits: 448 | Votes: 1 | Rating: 10 ]

• JT65-HF-Comfort - An extension of the excellent decoding software JT65 HF by Joe W6CQZ for amateur radio digital mode JT65
  [ Hits: 1474 | Votes: 1 | Rating: 8 ]
• WSJT-X Download Page - WSJT-X - Weak Signal Communication, by K1JT - offers specific digital protocols optimized for EME (moonbounce), meteor scatter, and ionospheric scatter, at VHF/UHF, as well as for LF, MF, and HF propagation. The program can decode fraction-of-a-second signals reflected from ionized meteor trails and steady signals more than 10 dB below the audible threshold. WSJT-X incorporates nearly all popular capabilities of programs WSJT and WSPR, while adding comprehensive rig control and many other features. Open-source, download latest version for Windows, Linux, Macintosh OS X.
  [ Hits: 8757 | Votes: 50 | Rating: 7.1 ]

• Universal HF Tracker - The PCB can produce a High Frequency RF signal in the range of 1MHz to 12.5MHz using an AD9833 Direct Digital Sequence (DDS) frequency synthesizer. The signal can be modulated with different Weak Signal modes such as WSPR, JT9 and JT65 using our Arduino 5V/16MHz Pro Micro software.
  [ Hits: 144 | Votes: 0 | Rating: 0 ]
• Arduino Digital Transceiver Project - Arduino Digital Transceiver (ADX) is a low-cost HF transceiver for digital modes. This Arduino-based project, inspired by QDX, features four bands, including 80m and 20m, supporting FT8, FT4, JS8call, and WSPR. Designed for simplicity and affordability, it uses an Arduino Nano, SI5351 module, and CD2003GP receiver. The ADX project emphasizes easy procurement, construction, setup, and operation, making it an accessible option for QRP enthusiasts. The firmware update enhances functionality, including CAT control support.
  [ Hits: 94 | Votes: 0 | Rating: 0 ]

• The EMCOMM Portable Station - This is a page designed to help the EMCOMM operator thinking of going portable. It will describe a way of having VHF UHF HF voice and digital in one box
  [ Hits: 900 | Votes: 2 | Rating: 3 ]

Pages: [prev] 1 2 3