portable power

portable power

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• Portable Base Matching Unit for 42 to 48 Foot Verticals - Medium power BMU (Base Matching Unit) intended for 42 foot to 48 foot vertical, sloper, or Inverted-L antennas.
  [ Hits: 83 | Votes: 1 | Rating: 1 ]

• RF Choke with Bifilar Windings - This article presents an RF Choke featuring an 11-bifilar turn winding of #14 house wire on a Fair-rite FT240-31 toroid. The choke is enclosed in a 3D-printed case from Thingiverse, though this may pose thermal concerns at higher power levels. With SWR concerns up to 30MHz, the author plans to employ two series chokes at the rig input for improved performance. This choke offers versatility for portable use, with potential mismatch resolution using an antenna tuner. Further testing is anticipated upon the arrival of new cables.
  [ Hits: 86 | Votes: 0 | Rating: 0 ]

• Portable T-Match ATU - Homebrew Portable T-Match ATU, VK1AD Portable T-Match Antenna Tuner (ATU) mounted in a plastic case, T-Match ATU Schematic – 3.5 to 52 MHz power rating 80 watts
  [ Hits: 103 | Votes: 1 | Rating: 8 ]

• Wire on the Ground: Portable Radio Success with Grasswire Antenna - The author shares a unique experiment with a 200ft Grasswire antenna—laying wire directly on the ground. Despite inherent losses, the setup enables successful radio communication with a Kentucky station, highlighting the antenna's practicality for portable use with minimal power.
  [ Hits: 102 | Votes: 0 | Rating: 0 ]

• Portable Operating Tips for Ham Radios - This article is from the book Ham Radio For Dummies and features some tips for portable amateur radio operations, on Field Day or generic outdoor operation, like selecting the proper antenna and portable power.
  [ Hits: 79 | Votes: 1 | Rating: 10 ]

• Antennas for QRP Operation - Antennas for low-power operation resemble those for 100W use. Minor adjustments, like capacitor voltage ratings, may apply, but basic principles persist. Portable antennas, notably Backpack Antennas for weight-conscious setups, hold relevance beyond QRP. While some antennas function acceptably at higher power, efficiency issues arise at QRP levels. Testing antennas at 100W exposes weaknesses, particularly in tuners, crucial for efficient QRP operation.
  [ Hits: 88 | Votes: 0 | Rating: 0 ]

• IC705 GoBox: A Portable Windows-Based Solution for All-Digital Modes - This project details the creation of a portable GoBox housing an IC705, Windows 11 PC, and Bluetooth microphone. The robust setup, enclosed in a weatherproof Hofbauer Explorer Case, ensures stability and functionality for QRP and emergency radio activities. The aluminum-mounted devices minimize RF interference, and a built-in LifePO4 battery powers the 10.1 TFT touch LED monitor, providing approximately 12 hours of use in receive mode. With a focus on grab-and-go versatility, this GoBox stands as an efficient solution for outdoor ham radio operations.
  [ Hits: 96 | Votes: 0 | Rating: 0 ]

• OpenRepeater for Raspberry Pi - OpenRepeater is a low cost, low power, but feature rich duplex repeater controller suitable for setting up a temporary / emergency repeater systems with radios that can be run on portable power. Download the latest OpenRepeater software for your Raspberry Pi 2/3/3B+/4. This image contains everything you need to get up and running quickly.
  [ Hits: 383 | Votes: 0 | Rating: 0 ]

• Where to buy PowerFilm Solar Panels - Where to buy solar panels for portable operations. PowerFilm panels and Genasun charge controllers in North America or in Europe
  [ Hits: 115 | Votes: 0 | Rating: 0 ]

• 6m Amplifier with 2x Gi7b - A 50 MHz stable and small power amplifier, suitable for portable and domestic use. This RF Power amplifier delivers 900W with used pair of tubes primary installed into amplifier.
  [ Hits: 125 | Votes: 0 | Rating: 0 ]

• Portable Efficiency: Building a KX3 Go-Box - A Go-box streamlines radio setup for temporary operations. Detailed guidance is provided on constructing a KX3 Go-box based on Radioset-go products. Emphasizing cooling, it incorporates silent fans and a temperature-controlled system. Wiring complexities, power considerations, and battery installation are covered. The Go-box offers a neat solution for field days and temporary setups, improving the efficiency and portability of the Elecraft KX3.
  [ Hits: 36 | Votes: 0 | Rating: 0 ]

• 5 Things to Know About Portable Power Stations - These pricey battery-powered devices are the only type of generator that can be used indoors safely. The article reviews pro and cons of power stations evaluating runtime, power delivery, power quality, ease of use, and noise.
  [ Hits: 171 | Votes: 0 | Rating: 0 ]

• Portable SSB transceiver for 14MHz - 20W portable handheld SSB transceiver for 20 meters band
  [ Hits: 177 | Votes: 1 | Rating: 7 ]
• Handheld SSB transceiver for 20m - A mid-power portable/handheld SSB transceiver for 14MHz
  [ Hits: 140 | Votes: 0 | Rating: 0 ]

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