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Antennas : 160M- Vertical antenna for 160 meter
- This high antenna require a large ground composed by 40 radials. It's not very handy expecially in windy situations but is very powerfull in pile-ups. In italian
[ Hits: 4136 | Votes: 1 | Rating: 10 ]
- DCTL Portable Antenna
- A Low -Power, Distributed Capacitance Twisted Loop , indoor portable HF antenna by Monty Northrup, N5ESE
[ Hits: 2158 | Votes: 2 | Rating: 10 ]
- Getting the most from your tuner
- Here is how to adjust this popular tuner circuit so it transfers maximum power to your antenna without going snap
[ Hits: 2825 | Votes: 3 | Rating: 6.33 ]
- Stacking Yagis
- Stacking principles, with homebrew coax- and power-splitters by DK7ZB
[ Hits: 784 | Votes: 1 | Rating: 2 ]
- RF Amplifiers
- Solid State and TWT Amplifiers From 1 MHz to 40 GHz with Power Levels from .1 mil Watt to 2.5 Kw
[ Hits: 6475 | Votes: 2 | Rating: 8.5 ]
- RF HAMDESIGN
- An engineering oriented organization specializing in the design and manufacture of high performance parabolic antennas, 3dB high power RF couplers, Antenna power splitters, directional RF couplers and more items for RF transmission from HF through Microwave frequencies.
[ Hits: 1615 | Votes: 5 | Rating: 9 ]
- Amidon Inc.
- Ferrite Toroids. Iron Powder Toroids. Ferrite Beads. Split Cores. Cable clamp-ons. Balun Cores. W2FMI Baluns and Ununs. Inductive components for EMI Suppression and RFI Suppresion, power supplies, HAM radio.
[ Hits: 2080 | Votes: 4 | Rating: 5.75 ]
- DEHN, Inc. Surge & Lightning Protection
- Offering transient voltage surge suppressor, TVSS, patch cables, surge arresters, surge protectors for lightning and power surge protection for electrical equipment, IT networks, communication systems, data lines, relay systems and solid state controllers.
[ Hits: 717 | Votes: 3 | Rating: 6 ]
- Nicola Tesla autobiography
- Free pdf book on Nicola Tesla. He is the true unsung prophet of the electric age; without whom our radio, auto ignition, telephone, alternating current power generation and transmission, radio and television would all have been impossible
[ Hits: 444 | Votes: 2 | Rating: 5.5 ]
- Crystal Radio Supply
- Offering Crystal Radios, Kits, Parts, and Supplies for the Radio enthusiast. Your source for free powered radios.
[ Hits: 917 | Votes: 7 | Rating: 7.71 ]
- Meter Mate - SWR Graph Software
- Meter Mate is a companion utility for your directional watt meter that allows you to calculate the SWR reading when the forward and reflected power readings are measured. In addition to calculating the antenna system SWR Meter Mate will also plot the SWR curves of all of your antennas onto graphs that may be printed out.
[ Hits: 1917 | Votes: 12 | Rating: 4.91 ]
- Ham Log
- Ham Log is an easy to use yet powerful QSO logging utility for all devices running Palm OS.
Ham Log's design and functionality was designed to meet my needs when mobile and away from my home station.
[ Hits: 1084 | Votes: 0 | Rating: 0 ]
- Aether
- Aether is an ham radio logging for the Mac. Aether gives hams logging software that is as powerful, easy to use, and good looking as the operating system it runs on.
Designed from the ground-up using Apple's Cocoa, Aether supports the latest Mac OS X technologies, and provides the experience that Mac users expect.
[ Hits: 3054 | Votes: 10 | Rating: 8 ]
- IK5MEN HF amplifier 10-160m.
- Italian page including pictures schematics diagrams of an home made linear amplifier using four EL509 in parallel. Output power is about 700W.
[ Hits: 4989 | Votes: 6 | Rating: 3.5 ]
- LA7MI 40W RF Amplifier for 80m
- 40W Linear Power amplifier with FETs for 80m
Some notes about saturation in ferrite- and iron-cores.
Written by LA7MI Stein Torp, N-5005 Bergen
[ Hits: 3024 | Votes: 2 | Rating: 1.5 ]
- A 20m monoband Power Amp
- The 20m monoband 4-1000 amplifier, by Jelmer (pa5r), Herman (pa0ten) and Frans (pa5ca)
[ Hits: 2890 | Votes: 2 | Rating: 9.5 ]
- GJ4ICD's 8877 50MHz Amplifier
- A Compact 8877 50MHz amplifier and Power supply
[ Hits: 1219 | Votes: 1 | Rating: 10 ]
- A low cost dummy load
- This article describes a low-cost, low-to-moderate power dummy load, which presents a 50-Ohm resistive load from HF through 440MHz.
[ Hits: 7753 | Votes: 8 | Rating: 5.75 ]
- SV1BSX Homebrew Corner
- Offer a wide range of homebrewing projects mainly for VHF UHF operations. From vhf antennas to preamplifiers, chargers and power supplies
[ Hits: 1509 | Votes: 9 | Rating: 9.78 ]
- External Keypad for FT-817
- An external keypad for FT-817(ND), for the serious portable/field-day contester/operator. Homebrew it with the free firmware and public circuit diagram.
The circuit is very simple and takes power supply from the ACC port of the radio
[ Hits: 2593 | Votes: 2 | Rating: 5.5 ]
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