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Query: QRP
Links: 414 | Categories: 8
Categories
- Ham Radio > Clubs > Technical Specialty > QRP Clubs
- Technical Reference > QRP Projects > QRP CW Transceiver
- Manufacturers > QRP Kits
- Technical Reference > QRP Projects
- Operating Modes > QRP
- Radio Equipment > HF Transceivers > Elecraft KX2
- Radio Equipment > HF Transceivers > Icom IC-705
- Radio Equipment > HF Transceivers > X1M
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Ham Radio Kits, including HF QRP SSB transceivers by EA3GCY
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The MicroBeacon is the combination of a memory keyer and controllable RF attenuator.
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Amateur Radio operator interested in mobile & emergency operations, with some portable QRP operations.
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Optimization tests of the W3EDP multi-band HF wire antenna a popular aerial among QRP enthusiasts because it is light weight and cheap.
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GM47: Simple 30m Band QRP CW-Transceiver
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A homemade QRP Dummy Load with built-in RF detector
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The SDR-908 is a software defined radio designed specifically for portable use, without the bother of being tethered to a PC or soundcard for the modulation/demodulation processing performed in this kind of radio.
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In this project, you will make a simple low-power broadcast-type circuit, using a crystal oscillator integrated circuit and an a collector modulated AM oscillator.
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An optimized QRP transceiver for 40 meters band
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A small random wire antenna tune that can tune from 40 to 10 meters bands.
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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.
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NN1G 30m 1W QRP transceiver by AA5TB
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Color photos, schematic and diagrams for an article written by N2APB for Fall 2000 QRPp. Also the subject of a presentation made at the Pacificon QRP Forum in October 2000.An Integrated and Portable PSK Station for 80 & 20 without using a PC!
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Small QRP Z-match project for max 10 W output by DL2LTO
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Paul Harden NA5N has produced a superb guide to solar activity and HF propagation for the QRPer
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This is the schematic of asolid-state 7 MHz QRP CW transmitter by VU2NAN
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This article by Seabury Lyon, AA1MY describe how homebrew kits for amateur radio pourposes, in order to support wire antennas
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A simple low-power broadcast-type circuit, using a crystal oscillator integrated circuit and an a collector modulated AM oscillator
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A circuit for a 5 milliwatts super QRP morse code transceiver by VE2ZAZ
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Comments received from QRP-L members concerning their experiences with GAP antennas.
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A Simple and Flexible Tuner for QRP Craig LaBarge, WB3GCK
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A hombrew QRP transceiver for 40 meter band with many pictures, circuit and sound recording of some QSOs made with this Rig consisting of 5 transistor and one chip.
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Software Defined Radio Projects, HF Receivers and Transceivers projects by YU1LM/QRP
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Demonstrates the operational status and reception reports for the SK6RUD/SA6RR QRPP beacons, which transmit on 478.9 kHz, 1995 kHz, 10.131 MHz, and 40.673 MHz. These beacons utilize extremely low power, with the 630-meter beacon operating at approximately 0.1 watt ERP into an L-antenna, showcasing the potential for long-distance contacts under favorable propagation conditions. The site details the specific frequencies and antenna types employed, such as a vertical at 500 kHz and a 1/4 vertical for higher bands. The resource compiles over 10,530 reception reports from amateur radio operators worldwide, logging details such as date, time, band, RST signal report, locator, distance, and receiver setup. Notable long-distance reports include a 500 kHz reception by AA1A-Dave from 5832 km in 2008 and a 10.133 MHz reception by ZL2FT-Jason from 17680 km in 2010, illustrating the global reach of these low-power transmissions. Each log entry provides specific equipment used by the reporting station, including transceivers like the Yaesu FT817, ICOM IC-7300, and various antenna configurations such as coaxial mag loops, inverted Ls, and end-fed wires. The primary objective of the SK6RUD beacons is to challenge conventional notions of power requirements for effective two-way communication, proving that contacts over significant distances are achievable with minimal output. The site also includes a submission form for new reception reports, fostering community engagement and continuous data collection on propagation phenomena across different bands. The detailed logs offer practical insights into real-world propagation characteristics and the efficacy of QRPP operations.
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LnR Precision Inc. is a North Carolina based company that specializes in Par EndFedz amateur radio antennas and MantiZ QRP Transceivers. Their most popular products include End-Fed QRP portable antennas and HF FX Series QRP Transceivers.
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Photos from around the world of perhaps the most famous QRP project ever created. Vintage 1970's and newer versions of the Tuna Tin Two are featured.
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Taking the venerable SMK-1 design to 20m and adding an RF amp, audio filter, and a TiCK Keyer ... by Wayne McFee, NB6M
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Showcasing a range of Morse code paddles, UR5CDX emphasizes craftsmanship in both dual and single paddle designs. Each key is engineered for optimal performance, catering to the needs of CW operators. The paddles are not just tools; they reflect the artistry of ham radio equipment. With options for personalization, including illuminated tags, operators can enhance their shacks with unique identifiers. The commitment to quality is evident in the materials used and the precision of the mechanics, ensuring reliable operation during contests or casual QSOs. UR5CDX also engages with the community, sharing insights on the manufacturing process and the impact of current events on production timelines. This connection fosters a sense of camaraderie among operators who appreciate the nuances of Morse code communication.
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Just a page with a few files to help other deserving qrp'ers obtain the qsl they so richly deserve. Includes IRC/GS Charts, DXCC conversion and USSR conversion tables
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70 MHz transverter, 4m band, by G3XBM
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Schematic of a homebrew receiver and keying
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This is not a sophisticated automatic keyer but it is lot QRP to build and to have fun operatin
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A workbench instrument capable of testing transistors, diodes, FETs, usefull constructing QRP circuitry.
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Small, but growing, group of amateur radio enthusiasts, most of whom are within 90 miles (and more) of Atlanta
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A family of small size QRP SSB transceivers for the 15 MHz. Includes a cigarette pocket size QRP transceiver and a larger shirt-pocket transceiver.
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Transverters-Store is a online shop for low cost transverter boards, but also QRP transceivers, Active antennas, RF bridge and probes, Mic equalizers and other amateur radio accessories
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Building the MFJ Cub QRP transceiver kit for 20 meters band by G4ILO
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Supplying Toroids, Electronic Parts and Kits to Engineers, Schools and Hobbyists. Capacitos, filters, inductors, qrp products
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Low Cost frequency counters and DDS VFO's for QRP and Vintage Radio's. LCD Digital Display, Frequency Counter or DDS VFO
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The following are the opinions expressed by various amateurs.
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QRP Popular Frequencies, where to operate in QRP mode