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294 links - and 4 categories
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Antennas : Tuners- 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 ]
- 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 ]
- 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 ]
- Sierra Radio Systems
- Sierra Radio Systems site controllers are used to monitor and control remote radio and equipment sites, often implemented to monitor repeater systems, broadcast equipment, solar power infrastructure, tracking rf power, temperature, voltage, current and switch closure
[ Hits: 129 | Votes: 0 | Rating: 0 ]
- 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: 2619 | Votes: 7 | Rating: 8 ]
- IC7300BKT Icom IC-7300 CAT Control
- Windows PC control program for the Icom IC-7300 transceiver. Power-on and Power-off by software BktNetInterface for JTDX and WSJT-X, audio recording, memory management, cw keyer management, Interface for other software
[ Hits: 461 | Votes: 2 | Rating: 7 ]
- IC-7300 Amplifiers Interfacing
- How to interface the Icom IC-7300 to RF Power amplifiers. Menu settings, cable connections and recommendations on how to avodi common errors that could even damage either the amplifier or the IC-7300
[ Hits: 359 | Votes: 4 | Rating: 9 ]
- 2.3GHz to 432MHz RX converter for FT-817
- A very small receiver converter that can be plugged to the backside of the battery powered portable transceiver FT817 from Yaesu. A high performance receiver for 2.3GHz amateur radio signal
[ Hits: 223 | Votes: 3 | Rating: 1.67 ]
- Midway Electronics
- Midway Electronics supplies the area with electronic components, wire, cables, amateur radio transceivers, QRP kits, CB transceivers, GMRS radios, Shortwave radios, power supplies, antennas, coax, connector and ham radio accessories
[ Hits: 215 | Votes: 2 | Rating: 3 ]
- 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 ]
- The DxDozer
- Ultimate HAM Radio LogBook for Windows for both beginners and experienced Dxers. It features several functions like complete logbook with powerfull search capabilities, FT8 and LoTW integrations, DX cluster. Cat Interface to control your radio, licence is based on yearly subscription.
[ Hits: 196 | Votes: 2 | Rating: 9.5 ]
- Amateur radio 3D models
- 3D printer models for Ham Radio accessories and parts like Crank knobs, antenna insulators, powerpole clips, adapters, yagi antenna clips, antenna and radio mounts.
[ Hits: 294 | Votes: 2 | Rating: 5 ]
- 432 MHz 100W RF Power Amplifier
- This article describes the construction of a 100-Watt, 70 cm amateur band linear power amplifier. It is the result of a protracted period of experimentation during which I investigated a number of final amplifier stages from obsolete UHF FM 2-way radios.
[ Hits: 232 | Votes: 1 | Rating: 9 ]
- 100W UHF Linear Amplifier
- This page details my building of a 100 Watt Power Amplifier for the 432 MHz Band based on two Motorola MRF646 transistors taking inspiration by Carlo Gnaccarini VK3PY, formerly VK3BRZ
[ Hits: 192 | Votes: 0 | Rating: 0 ]
- 70cm Beacon
- PLL synthesized 70cm CW beacon exciter. The exciter is built arround a slightly more advanced ADF-4351 single chip PLL synthesizer rather then (among amateurs) more popular Si-570 or Si-5351 integrated circuits. The exciter is capable of providing up to 250 mW of RF output power,
[ Hits: 126 | Votes: 1 | Rating: 10 ]
- Ecoflex-15 Degradation
- This article describes the problem detection on power loss events experienced during repeated usage of the Ecoflex-15 coax cable by members of the G3PYE contest minions and addressed to repeated coiling and uncoiling which has fractured the foil braid in numerous places.
[ Hits: 175 | Votes: 0 | Rating: 0 ]
- 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 ]
- Experimental HF 6-band SSB transceiver
- An SSB radio for the HF bands will be presented. Featuring 12 to 20 Watts of output power (depending on DC supply), full DDS frequency generation, covering 6 major frequency bands (1.8, 3.5, 7, 14, 21 and 28 MHz) within the short wave amateur radio spectrum. The rig also features colored LCD and front panel backlight.
[ Hits: 709 | Votes: 14 | Rating: 9.86 ]
- 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 ]
- TRX Eagle SDR
- TRX Eagle is a ultra compact software defined radio for amateur radio bands. This all mode SDR features a 15W total power output.
[ Hits: 442 | Votes: 1 | Rating: 1 ]
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