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149 links - and 1 categories

Antennas : Feed Lines
  • To transform ot not to transform - Feed Lines - Transmission lines have many uses other than simply transferring RF power from one point to another. Impedance matching, baluns and filters are probable the most common of these.
    [ Hits: 137 | Votes: 0 | Rating: 0 ]
Manufacturers : Microwave
  • Kuhne Electronic - High quality microwaves components for professional and radioamateurs. Power Amplifiers, Low Noise Amplifiers, Es hail 2 Converter Transverter, Signal Sources, Passive Components and Accessoires
    [ Hits: 102 | Votes: 0 | Rating: 0 ]
Manufacturers : Power Supply
  • Alpha Power Systems LLC - Alpha Power Systems, LLC is committed to offering the highest quality of surge protection and power quality products, such us Backup UPS available with service second to none
    [ Hits: 129 | Votes: 0 | Rating: 0 ]
Manufacturers : Transceivers
  • PolEx Technologies - Makers of the The Polar Explorer transmitter, which operates on 9 HF bands from 160 through 10 meters and is capable of 500 watt peak output power on SSB, CW, AM, FM and RTTY. It is intended to be used in conjunction with a transceiver.
    [ Hits: 500 | Votes: 0 | Rating: 0 ]
Operating Modes : APRS Operating Modes : Portable Operations
  • Portable Amateur Radio Operations - The main issues with portable HF operations have become not issues of the transmitting and receiving equipment itself but of providing power and antennas
    [ Hits: 496 | Votes: 2 | Rating: 5.5 ]
  • QRP Portable Station Winter Configuration - An article describing equipment needed to make portable operations evenin winter cold times. The article is completed by a nice video describing not only the radio setup but even the tent and power supply equipment
    [ Hits: 414 | Votes: 1 | Rating: 8 ]
Shopping and Services : Bags and Cases Shopping and Services : Kits and Components
  • Hamtech - HAM-made engineering products supplies and produces coaxial relays, antenna switches, sequencers, roller inductors, variable capacitors, low noise preamplifiers, RF power rotary switches and coil bodies.
    [ Hits: 191 | Votes: 0 | Rating: 0 ]
Software : Radio Control
  • FGB Wakeup for Yaesu FT RTX - Home made freeware utility that allows to power on or shutdown the Yaesu FT rig. It has been tested on the FT-5000. It works also on FT 450 950 1200 2000 3000 5000 9000. It does NOT require any installation, just the exe files. Available in client server mode for remote connections
    [ Hits: 76 | Votes: 1 | Rating: 10 ]
Technical Reference : 3D Printed Projects
  • Amateur radio 3D models - 3D printer models for Ham Radio accessories and parts like Crank knobs, antenna insulators, powerpole clips, adapters, yagi antenna clips, antenna and radio mounts.
    [ Hits: 294 | Votes: 2 | Rating: 5 ]
Technical Reference : Alternative Power
  • 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 ]
Technical Reference : Arduino
  • Arduino Power and SWR Meter - Power and SWR Meter with dual bargraphs and sticky bar, using 2x AD8307
    [ Hits: 5490 | Votes: 19 | Rating: 6.94 ]
Technical Reference : Coax Cables and Connectors
  • Coax Cable Attenuation and Power Handling Online Calculator - An on-line coaxial cable attenuation and total power handling calculator, with a lot of cable properties already configured to give the Nominal Attenuation, Maximum Cable Assembly Insertion Loss, Average Power, Cable Vg anf Nominal Td
    [ Hits: 227 | Votes: 2 | Rating: 2 ]
Technical Reference : Power Supply
  • 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: 170 | Votes: 0 | Rating: 0 ]
Technical Reference : QRP Projects
  • Gimme Five - QRP SSB Transceiver - Gimme Five reloaded, a compact 5 band QRP SSB transceiver in SMD technology. This unit covers 5 bands within the amateur radio spectrum (3.5, 7, 14, 21 and 28 MHz). Receiver is a single conversion unit with an interfrequency of 9 MHz. Transmitter uses 5 stages and has got a power level of 10 watts PEP output.
    [ Hits: 284 | Votes: 1 | Rating: 10 ]
Technical Reference : Raspberry Pi
  • Setting up Raspberry Pi for Ham Radio - An interesting guide to installing software on a Raspberry for amateur radio use. This documentation cover the Raspberry Pi 4 version that whose hadware is powerfull enought to fullfill all requiriements for ham radio programs.
    [ Hits: 396 | Votes: 3 | Rating: 9.33 ]
Technical Reference : Repeater
  • Cross Band Repeaters - Crossband Repeating is a process where a Ham transmits one signal on one band (typically UHF), and it is received by another radio with a better antenna/power installation, and re-transmitted (typically on VHF) to another radio system, or a repeater. Everyday examples of cross-band repeaters are repeater receive sites that hear the input signals on 2m and retransmit those signals on a frequency higher than 220 MHz.
    [ Hits: 206 | Votes: 0 | Rating: 0 ]
Technical Reference : SWR Meters
  • Digital SWR Meter with Arduino - Inline RF Power & VSWR Meter. A DIY meter 0 to 30 Watt with Average and Peak. Circuit Description, Arduino Nano software code and part list to DIY your own Digital SWR Meter
    [ Hits: 3328 | Votes: 17 | Rating: 5.93 ]
Technical Reference : Standing Wave Ratio
  • Measuring SWR at 1296 MHz - Have you been looking for an easy way to measure power or SWR at 1296 MHz? One thing is certain, it is not easy - simply because the normal range of SWR meters that most of us have is not up to 1300 MHz.
    [ Hits: 248 | Votes: 0 | Rating: 0 ]

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