QRP

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QRP

455 links - and 8 categories

Antennas : Baluns
  • Balun 1:4 UNBAL to BAL - How to wind toroids in making baluns, using two pieces of 0,5 mm enameled wire in parallel.
    [ Hits: 426 | Votes: 2 | Rating: 5.5 ]
Antennas : Dipole Antennas : Magnetic Loop
  • Indoor QRP HF Loop Antenna - A home made magnetic loop for HF Bands. This small and compact loop is designed to support small power transmissions on HF bands, from 7 MHz to 21 MHz
    [ Hits: 323 | Votes: 1 | Rating: 10 ]
Antennas : Portable
  • PAC-12 Antenna modification - A Multiband Slinky Coil for the PAC-12 portable Antenna, can be used also as a dual PAC-12 dipole by James Bennett
    [ Hits: 264 | Votes: 2 | Rating: 10 ]
Antennas : Tuners
  • A QRP Transmatch ATU - A home made Antenna Tuner made with a simple inductor and a few spare parts. Despite the title, the author succesfully tested this ATU with higher power inputs.
    [ Hits: 203 | Votes: 0 | Rating: 0 ]
Manufacturers : Baluns
  • OM0ET Antennas - Maker of small and compact multiband QRP UltraLight Magnetic Loop Antennas and UnUn transformer for end-fed multiband antennas
    [ Hits: 311 | Votes: 7 | Rating: 7.57 ]
Software : Linux
  • cqrprop - HF propagation to your Linux desktop. CQRLOG uses data from HamQSL website provided by Paul, N0NBH.
    [ Hits: 214 | Votes: 1 | Rating: 10 ]
Technical Reference : Amplifiers : HF Amplifiers
  • A Compact 600W Broadband HF Power Amplifier - A 600W 1.8 MHz to 54 MHz power linear amplifier made using rugged MRF300 transistors featuring output power between 580W and 750W depending on band, power supply: 48V, 18A typical, 20A max
    [ Hits: 596 | Votes: 6 | Rating: 7.33 ]
Technical Reference : Frequency Counter
  • Frequency counter project - This project includes quite a number of useful testing features which were very useful when building other projects. Almost all the components used to construct this frequency counter were scrounged from old circuit boards and junk equipment.
    [ Hits: 128 | Votes: 0 | Rating: 0 ]
Technical Reference : Ham Radio Go Kits Technical Reference : Keyers
  • DL4YHF PIC-Keyer - This page describes a printed circuit board that you may use to build a QRP keyer.
    [ Hits: 126 | Votes: 1 | Rating: 7 ]
Technical Reference : QRP Projects
  • Micro24 Cigarette Pack SSB QRP Transceiver for 20m - The Micro24 is a ultra compact microsize QRP SSB transceiver for the 20 meters amateur radio band. This transceiver is so small that it fits into one hand.
    [ Hits: 1160 | Votes: 7 | Rating: 7.71 ]
  • The Micro20 III Pocket Size SSB RTX for 20m - DK7IH QRP transceiver for 14 MHz. This small and compact home made transceiver with a max power output of 5W, the VFO module is based on the clock oscillator chip Si5351A by Silicon Labs ATmega168 and OLED 1306
    [ Hits: 249 | Votes: 3 | Rating: 10 ]
  • 136 kHz QRP Transmitter - The Marathon is a low power transmitter for 136 kHz
    [ Hits: 186 | Votes: 1 | Rating: 6 ]
  • 17m QRP SSB Transceiver - 18MHz QRP SSB transceiver PEREGRINO DX is a small portable QRPp project
    [ Hits: 235 | Votes: 1 | Rating: 1 ]
  • QRP Portable Rig for 80-40 meters - A home made portable QRP transceiver designed to work on 40 or 80 meters SSB band.
    [ Hits: 193 | Votes: 0 | Rating: 0 ]
  • 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 : QRP Projects : QRP CW Transceiver Technical Reference : Raspberry Pi
  • Low Cost FT8 WSPR Monitoring System - A tutorial on setting up a Low Cost QRP (FT8, JT9, WSPR etc) Monitoring Station with an RTL-SDR V3 and Raspberry Pi 3
    [ Hits: 271 | Votes: 0 | Rating: 0 ]
Technical Reference : Transverters
  • 4m QRP Transverter - There are few equipment for the 4m band, so to get on the band it could be necessary to design and build a simple transverter.
    [ Hits: 96 | Votes: 0 | Rating: 0 ]

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