uhf projects

uhf projects

Antennas : 2M

• VHF J Pole for 146 Mhz - KF4SCI project for a VHF UHF jpole, working on 220 and 440 Mhz
  [ Hits: 4640 | Votes: 7 | Rating: 6.43 ]

• The simple 144/440 copper pipe J - A simple dual band VHF UHF jpole antenna Projects by Dale Kubichek
  [ Hits: 8387 | Votes: 18 | Rating: 8 ]

• VHF Yagi Balcony Mast - An Antenna Mast Idea for a VHF/UHF antenna
  [ Hits: 815 | Votes: 1 | Rating: 2 ]

• Dual Band VHF UHF Yagi Antenna projects - On this page are designs for Dual Band 2M / 70cm antennas. All antennas are 50 ohm designed driver. These Yagis have a unique element called a Open Sleeve. 4 Element 5 element and 9 element Dual Band - 2M / 70cm antenna projects
  [ Hits: 753 | Votes: 4 | Rating: 5.75 ]
• VHF-UHF Long Boom Very High Performance Antenna Designs - Experimental Long Boom Antennas - CP, LPDA, multiband with several NEC Files for 50MHz 144MHz 222 MHz 432MHz but also 902MHz and 1296 MHz Antenna projects. Includes also for each antenna model, in a general comparison table each antenna characteristics including Directive Gain, G/T, E-F/R, H-F/R abd Boom Length. This is a great value comparison table of several commercial and home made VHF UHF antenna projects.
  [ Hits: 190 | Votes: 1 | Rating: 10 ]

• OK1CDJ Ondrej - VHF, UHF page, technical articles, projects, datasheets
  [ Hits: 3553 | Votes: 14 | Rating: 7.93 ]

• 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: 8756 | Votes: 50 | Rating: 7.1 ]

• 100W UHF Linear Amplifier - This page details my building of a 100 Watt Power Amplifier for the 432 MHz Band based on two Motorola MRF646 transistors taking inspiration by Carlo Gnaccarini VK3PY, formerly VK3BRZ
  [ Hits: 193 | Votes: 0 | Rating: 0 ]

• HamShield for Arduino - HamShield is a powerful VHF UHF transceiver that lets your Arduino talk to far away people using ham radio bands
  [ Hits: 1087 | Votes: 2 | Rating: 4 ]
• RF PWR and SWR Meter with Arduino - This sketch will read RF power and SWR from any SWR bridge, designed to work on VHF UHF bands
  [ Hits: 10654 | Votes: 34 | Rating: 6.97 ]

• VHF-UHF Diplexer - Diplexer is a passive device, a special filter circuit that seperates 2 different bands, not to be confused with the duplexer that usually separate 2 different frequencies on the same band.
  [ Hits: 1140 | Votes: 2 | Rating: 5 ]

• SV1BSX Homebrew Corner - Offer a wide range of homebrewing projects mainly for VHF UHF operations. From vhf antennas to preamplifiers, chargers and power supplies
  [ Hits: 1514 | Votes: 9 | Rating: 9.78 ]
• Hybrid Synthesizer for UHF and microwave - A versatile hybrid synthesizer for UHF and Microwave Projects
  [ Hits: 756 | Votes: 0 | Rating: 0 ]
• Automatic Roger Beep for VHF/UHF Contests  ^new - This project details an automatic roger beep circuit for VHF/UHF contests. Built around a Microchip PIC microcontroller, the design detects PTT (Push-To-Talk) activation and generates a brief tone upon release, mimicking a "roger beep" to signal the end of transmission. The circuit utilizes readily available components and includes downloadable resources for PCB layout and firmware.
  [ Hits: 17 | Votes: 0 | Rating: 0 ]

• 2m to 70cm Transverter Circuit - A 70cm / 432 MHz Transverter Project transverter circuit is an electronic device that converts a radio signal from the 2 meter to the 70 centimeter band and vice versa, allowing a single transmitter/receiver to be used for both bands. It consists of an IF stage, local oscillator, frequency multiplier, and amplifier. The circuit must be designed for minimal signal loss, noise and intermodulation distortion.
  [ Hits: 81 | Votes: 0 | Rating: 0 ]