Antennas : Magnetic Loop
- Antentop: Loop Antennas
- Article on radiation patterns of small loops, equivalent circuits of loop antenna, small loops as receiving antennas, ferrite loops
[ Hits: 1869 | Votes: 4 | Rating: 8.00 ]
- Multi Band Antenna Traps
- These devices are called Traps, but they are actually more like frequency sensitive switches. They are parallel resonant, high Q, tuned circuits which provide a very high impedance at their frequency of resonance.
[ Hits: 4691 | Votes: 3 | Rating: 6.00 ]
- Fun With Tubes
- A noncommercial site operated by Max Robinson and
dedicated to passing on and preserving knowledge of vacuum tube circuits and techniques.
[ Hits: 610 | Votes: 4 | Rating: 9.75 ]
- NM-ARTS - Amateur Radio Technical Society
- A hardware and software project group to support learning and creation radio circuits, general electronics, and uProcessor control systems
[ Hits: 297 | Votes: 1 | Rating: 10.00 ]
- PSK31 Interfacing
- PSK31 basics and radio to pc soundcard interface circuits, radio to soundcard, soundcard to radio and pc serial port to radio
[ Hits: 5123 | Votes: 4 | Rating: 8.00 ]
- Is HF propagation reciprocal
- Some test circuits using the ACE-HF System Simulation & Visualization software, about reciprocal propagation on HF bands by NW7US
[ Hits: 377 | Votes: 1 | Rating: 7.00 ]
- M.C. Howard Electronics
- Distributor of Common Electronic Components Such As Memory, Integrated Circuits, Discrete Components, Cables And Services. We Also Provide Prom Programming, Simm Manufacturing, Testing And Custom Kitting.
[ Hits: 362 | Votes: 0 | Rating: 0.00 ]
- DERF electronics corporation
- Distributor of electronic components like diodes Transistors Microcontrollers Microprocessors connectors, switches, relays, integrated circuits, eproms, leds
[ Hits: 385 | Votes: 2 | Rating: 10.00 ]
- Far Circuits
- FAR Circuits is exclusively a manufacturer of Printed Circuit Boards for electronic projects that are used by the Amateur Radio and electronic hobby enthusiast.
[ Hits: 2072 | Votes: 0 | Rating: 0.00 ]
- AP Circuits
- Printed circuit board fabrication
[ Hits: 222 | Votes: 1 | Rating: 10.00 ]
- HL1INF RF Amplifiers
- Circuits, pictures and data about toroids, tubes and home made power amplifiers
[ Hits: 2272 | Votes: 1 | Rating: 10.00 ]
- Medium Frequency Amplifier Circuits Compared
- Mark Connelly, WA1ION article on Medium Frequency Amplifier Circuits in PDF format, include some RF amplifier schematics
[ Hits: 526 | Votes: 0 | Rating: 0.00 ]
- Build a Remote Control Antenna Switch
- Remote Control Antenna Switch made with two circuits board
[ Hits: 2445 | Votes: 0 | Rating: 0.00 ]
- NiCad battery charger
- A basic nicad battery charger using a single medium power transistor.
[ Hits: 242 | Votes: 0 | Rating: 0.00 ]
- DigChip IC database
- Provider of electronic components documentation. Offer a reliable tool to find semiconductors components technical information like parts, datasheets, cross reference, obsolete and new circuits.
[ Hits: 477 | Votes: 6 | Rating: 4.17 ]
- Lightning Protection : Protecting each I/O line
- KB22UT Article on how protecting ham radio station and in particular I/O Lines such as AC power, coax cable, control circuits, telephone line.
[ Hits: 553 | Votes: 0 | Rating: 0.00 ]
- 20 Amp power supply
- A 13.8 volt 20 Ampere power supply project
[ Hits: 5629 | Votes: 5 | Rating: 5.60 ]
- Designing Op Amp Audio PreAmplifiers
- Design guidelines for Op Amp audio preamplifier circuits by Mike Martell N1HFX
[ Hits: 1502 | Votes: 4 | Rating: 3.25 ]
- How to solder
- Key facts about how to solder, how to solder wire, how to solder pcb's, and including general soldering techniques and the best ways of making good solder joints for electronic circuits and construction.
[ Hits: 607 | Votes: 0 | Rating: 0.00 ]
- Fun With Tubes
- Dedicated to passing on and preserving
knowledge of vacuum tube circuits and techniques
[ Hits: 848 | Votes: 6 | Rating: 10.00 ]
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