Knightsqrss Info Page
- This mailing list is devoted to lowpower, narrowband experimenting (QRSS CW, DFCW, etc). You are invited to share your ideas with the group, announce on-the-air schedules, etc by posting messages
- Text books relating to amateur radio (HAM radio), highpass and lowpass power filters, transmitter test loads (dummy loads), study tapes and disks to learn morse code, transceiver preamplifiers, antenna signal boosters.
LowPower Radio Modules
- Lowpower radio modules - supplying rf modules, rf transceivers, radiometrix transmitters receivers, lowpower radio modules, scada, frequency hopping, 900 mhz, wireless data transmission, data telemetry, gps modules & receivers and more
About digital modes
- The digital modes provide a wonderful opportunity for those of us who would like to work on the HF bands but find CW too difficult and SSB phone prohibitive because of interference problems. The digital modes are easy to set up and get operating, require lowpower and a narrow band.
Hellschreiber beacon project
- This web site describes a lowpower beacon system to be used for propagation and performance tests on the lower bands. The beacon offers CW (on-off keyed) modes and FSK modes; the traditional Morse ID mode, and Feld-Hell, another highly noise immune CW mode.
NOGA QRP club
- Small, but growing, group of amateur radio enthusiasts, most of whom are within 90 miles of Atlanta, are interested in promoting the development of the branch of amateur radio known as QRP - building and operating lowpower transmitters, receivers and transceivers.
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KQ0RP Iowa QRP Club
- Club formed to promote amateur radio lowpower operation, to hone operating skills, to improve building skills, and to introduce the hobby to prospective new amateur radio operators
ON7YD ARDF pages
- Includes some interesting projects for lowpower ARDF transmitters
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A lowpower 3.5MHz ARDF transmitter
- This lowpower transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.
HF Antennas for restricted space
- Arrl document about invisible antennas and indoor systems. It is important to consider that few compromise antennas are capable of delivering the performance one can expect from the full-size variety. But the patient and skillful operator can often do as well as some fellows who are equipped with high power and full-size antennas. The "cliff-dweller" may not be able to "bore a hole" in the band as often, and as easily, but DX can be worked successfully when band conditions are suitable.
HAMIC - The Ham Intelligent Calculator
- HAMIC, is a program designed to simplify a number of calculations commonly used by HAMs. It is designed for the HAM radio hobbyist, but may be useful to others as well. HAMIC has a simple to use, but powerful graphical interface that allows solving simple circuits such as resistors in series or parallel, or more complex circuits such as L networks or T networks. As well, other calculations such as SWR and reactance conversions are supported. Windows shareware.