battery

battery

113 links - and 1 categories

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Operating Modes : QRP

• EA2CW QRP Portable radio setup - A portable QRP setup based on 20/30/40m QRP CW-only SW-3B transceiver, 2500mAh 5C LiPo battery (147g), Hands Free Nanokeyer
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Radio Equipment : HF Transceivers : Icom IC-705

• 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 ]

Radio Equipment : HF Transceivers : Yaesu FT-817

• FT-817 internal battery power Fix - If your FT-817 has stopped powering up from the internal battery but works from external power, then maybe the internal battery fuse has blown. There is a small PCB mounted fuse to protect the battery and radio. This fuse can blow, if it does your radio will not work from battery power. This page will describe how to test the fuse and describe how to make a repair.
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• Yaesu FT-817 battery pack - Go portable with an external battery pack. The built-in batteries will not last thirty minutes when transmitting, that's not really practical. An external battery pack overcomes these problems.
  [ Hits: 96 | Votes: 0 | Rating: 0 ]

Technical Reference : Batteries

• 50Ah LiFePO4 battery - A LiFePO4 battery box build project made with 25Ah 3.2V LiFePO4 prismatic cells, 40A 4s1p BMS with Bluetooth, 10A Buck/Boost converter
  [ Hits: 111 | Votes: 1 | Rating: 10 ]
• Battery University - A free educational website offering hands-on battery information. The tutorials evaluate the advantages and limitations of diverse battery chemistries, advise on best choices, and suggest ways to extend life.
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• Building a new lithium battery - Homebrew a custom lithium battery pack with 5s3p batteries
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• USB-C charging for Handheld Radio Transceivers - The article highlights the common absence of modern USB-C ports on handheld ham radios and the limited use of USB for power. The author, [jephthai], shares a solution involving a USB-C cable with power negotiation capabilities, allowing the radio to be powered by USB. By splicing Anderson power pole connectors onto the cable, the radio can now be conveniently powered by a USB battery bank, providing a practical alternative to traditional 12 V batteries for off-grid operations.
  [ Hits: 142 | Votes: 1 | Rating: 10 ]

Technical Reference : Batteries : Battery Charger

• How to Make an Automatic 12V Battery Charger - A home made battery charger 110-220 v AC providing from 1.25-24 v DC Adjustable at 8 Amps output power, with Short Circuit Protection Over Load and over charge Protection.
  [ Hits: 155 | Votes: 0 | Rating: 0 ]
• 12v Battery Charger - Well, firstly the 12 Volt source will typically vary anywhere from 11 Volt to 15 Volt, and then a battery needs a controlled charge current and voltage, which cannot result from connecting it directly to a voltage source.
  [ Hits: 80 | Votes: 1 | Rating: 10 ]
• Battery Charger for Hand Held Radio Battery Packs - This is a handy little charger that can provide a charging current of up to 120 mA continuously for batteries in the range up to 12 volts. The supply is housed in a small plastic enclosure 90 x 55 x 32 mm.
  [ Hits: 88 | Votes: 0 | Rating: 0 ]

Technical Reference : Ham Radio Go Kits

• Yaesu FT-891 Go-Box for POTA - This article documents the author's latest go-box build for outdoor ham radio operations using a Yaesu FT-891 transceiver. The go-box is constructed from a plastic "50-cal ammo case" and contains various components, including the transceiver, LDG Z11 Pro autotuner, DIY Yaesu FH-2 remote control keypad, and an external battery. The author details the design considerations, the mounting of components inside the box, and addresses issues related to ventilation and cable management. The go-box is geared for CW operations and POTA activations, with further modifications planned for a microphone and DATA jack. This project allows for rugged, environmentally protected outdoor radio operations while maintaining portability.
  [ Hits: 196 | 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: 37 | Votes: 0 | Rating: 0 ]

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