low power

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low power

110 links - and 1 categories

Antennas : Dipole Antennas : Tuners
  • The Z Match Using a Toroidal Core Coil - Combined with Miniature Tuning Gang Capacitors, a toroidal core inductor is a means to assemble a compact Z Match assembly for Low Power (QRP) use.
    [ Hits: 608 | Votes: 0 | Rating: 0 ]
  • Semi-automatic antenna tuner project - Thsi article describes a microcontroller driven semi-automatic antenna tuner capable of handling power levels up to 150 watts. The device is a low pass filter tuner manually tuned by setting the optimized L/C combination by hand and then storing the values into the EEPROM of the mictrocontroller to recall them later (seperately for each band from 80 to 10 meters including WARC bands)
    [ Hits: 291 | Votes: 0 | Rating: 0 ]
Manufacturers : Accessories
  • Pro Audio Engineering - High-quality products for broadcast and amateur radio. Kx33 Low-RFI AC Power Supply for HF Transceivers, Elecraft Heatsinks, Fair-Rite Mix 31 Ferrites
    [ Hits: 118 | Votes: 0 | Rating: 0 ]
Manufacturers : Amplifiers
  • R3KBO EB104.ru Amateur Radio Products - R3KBO is an amateur radio club producing and developing amateur radio kits and assembled products including HF VHF Power Amplifiers or RF Power Kits and amplifier parts, low pass filfers, band pass filters, sourge protections, splitters and combiners, antenna switches
    [ Hits: 511 | Votes: 1 | Rating: 10 ]
Manufacturers : Filters
  • VA6AM Contesting Accessories - Custom built high and low power power band pass Filters, low band triplexers, triplexers and diplexers
    [ Hits: 118 | 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 ]
Operating Aids : Grid Squares
  • Interactive Maidenhead Grid Square Locator Map - Amateur Radio Ham Radio Maidenhead Grid Square Locator Map online. This map allow just a point and click to determine dynamically the correct six characters locator. Other functions allow to calculate the distances among two given locators, or coordinates. Hover over map, specify grid, or enter latitude and longitude to show grid and/or calculate distance. Map is powered by Bing Maps.
    [ Hits: 2622 | Votes: 7 | Rating: 8 ]
Operating Modes : QRP
  • QRP - Low Power Operating ARRL - QRP is a way of operating that involves using low power transmitters, that are no more than 5 Watts for Morse or data modes, or 10 Watts pep for voice. Introduction to QRP operations
    [ Hits: 72 | 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 ]
Software : Repeater Control
  • 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: 379 | Votes: 0 | Rating: 0 ]
Technical Reference : APRS
  • The WhereAVR - The WhereAVR is a small, lightweight, low-power, and low-cost APRS tracker with a full compliment of analog and digital I/O, as well as the ability to decode ax.25 packets. This allows for the reception of remote commands without the need for a real TNC.
    [ Hits: 258 | Votes: 0 | Rating: 0 ]
Technical Reference : Amplifiers : HF Amplifiers
  • 20 W HF Power Amplifier - A HF power amplifier with a push-pull of AFT09MS015N. The (small-signal) gain of the amplifier is around 26 dB in the lower HF band and goes down to about 24 dB on the higher end and still around 21 dB at 50 MHz. Its input matching is relatively good at the lower HF and degrades above 10 MHz.
    [ Hits: 169 | Votes: 0 | Rating: 0 ]
Technical Reference : Arduino
  • Airgate - A Receive-Only, Low-Power APRS iGate made with Arduino
    [ Hits: 149 | Votes: 2 | Rating: 4 ]
Technical Reference : Components
  • Repair or Replace Electrolytic Capacitors - For low voltage applications, like cathode bypass capacitors, most vintage types have an axial configuration, which is less common today but still available. Electrolytic power supply caps likely constitute the single worst liability in old audio, radio and test equipment. Rap about Electrolytics, Reforming, Chassis-Mount Replacements, Under-Chassis Installation, Rebuilding Capacitors
    [ Hits: 120 | Votes: 1 | Rating: 6 ]
Technical Reference : QRP Projects
  • 136 kHz QRP Transmitter - The Marathon is a low power transmitter for 136 kHz
    [ Hits: 186 | Votes: 1 | Rating: 6 ]
Technical Reference : Transverters
  • 70cm Mini Transverter - A low cost, low power microwave transverter so that you can operate easily on 70cm band even with a HF or VHF transceiver
    [ Hits: 389 | Votes: 0 | Rating: 0 ]
  • Transverter for 50 70 28 MHz - This multiband transverter project features power output at 13,8V 50MHz 15W, 70MHz 10W, second harmonic <65dBc. Single N connector of antenna, suitable for a dual band Yagi. Article include Block Diagram for Dual Transverter and low pass filters
    [ Hits: 151 | Votes: 1 | Rating: 10 ]

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