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713 links - and 10 categories

80 meters spiral loop antenna - N4SPP 80 meters band spiral loop antenna based on SM0VPO design
[ Hits: 5253 | Votes: 10 | Rating: 7.1 ]

Vertical phased Array - A SM3HXD vertical phased array antenna system
[ Hits: 1393 | Votes: 1 | Rating: 8 ]

K9AY Receiving Loop Antenna System - K9AY 160M / 80M Receiving Loop Antenna System by K7SFN
[ Hits: 1845 | Votes: 0 | Rating: 0 ]

QEX Ground System Experiments - N6LF series of experiments on ground systems for vertical antennas. That series of reports was converted, with some modifications, into a series fo seven articles in QEX magazine.
[ Hits: 791 | Votes: 1 | Rating: 8 ]

Homebrew Antenna Tuner - A simple T-network that can match any unbalanced antenna system by AA5TB
[ Hits: 4876 | Votes: 5 | Rating: 7.6 ]

HDSCS Hospital Disaster Support Communications System - A group of ham operators in Orange County, California that has supported over 30 hospitals since 1980. Includes information on how hams can provide hospital support in their own areas.
[ Hits: 419 | Votes: 0 | Rating: 0 ]

The Austin QRP Club - The A QRP Club is a small group of Amateur Radio enthusiasts who enjoy building, operating and (mostly) talking about Low Power radio communications, equipment and systems.
[ Hits: 683 | Votes: 1 | Rating: 10 ]

Tecadi - Mast systems and antenna accessories, hamrope(R) guy lines by Jurgen Simon DH5AB
[ Hits: 1723 | Votes: 3 | Rating: 6.33 ]

HI-Z Antennas - HF receiving systems and components, band pass filters, array controllers, HI-Z pre amplifiers
[ Hits: 721 | Votes: 0 | Rating: 0 ]

TCI International - US global provider of innovative radio frequency (RF) solutions for spectrum monitoring and antenna applications. Specializes in Spectrum Monitoring, Communications Intelligence , HF/MF Broadcasting & Communication antenna systems.
[ Hits: 559 | Votes: 0 | Rating: 0 ]
Kathrein Inc - Manufacturer of professional antenna and filter systems for communications and broadcasting, serving commercial and governmental markets worldwide.
[ Hits: 536 | Votes: 2 | Rating: 5.5 ]

1296 by KB2AH - Specialized 1296 Mhz Equipment, Circular Feeds, LNA, power amplifiers, Antenna systems, Test equipments, antenna mounting blocks
[ Hits: 721 | Votes: 0 | Rating: 0 ]

Amphenol - One of the largest manufacturers of interconnect products in the world. The Company designs, manufactures and markets electrical, electronic and fiber optic connectors, coaxial and flat-ribbon cable, and interconnect systems.
[ Hits: 392 | Votes: 1 | Rating: 1 ]
MegaPhase - MegaPhase designs, manufactures and sells coaxial cable assemblies to OEMs building advanced microwave and optical electronic systems, products include test cables, test adapters, flexible and semi-rigid cables used to connect system components inside a system, and coaxial connectors.
[ Hits: 331 | Votes: 0 | Rating: 0 ]

A Two-Way Morse Practice Set - The system consists of a pair of Morse practice oscillators connected by a piece of two-conductor cable. Pressing the key on one unit produces a sound in both units by Peter Parker VK3YE -
[ Hits: 1057 | Votes: 3 | Rating: 4.67 ]

Heavens Above - Live realtime satellite tracking system show current status of amateur radio satellites, ISS tracking is also provided by showing ISS Visible Passes based on your own location. This web site show the International space station live position and can be used as an iss tracker app to determine future satellite and ISS transit over your location.
[ Hits: 2279 | Votes: 7 | Rating: 7.57 ]

Advanced Battery Systems - Specializes in providing portable power solutions. Custom battery pack assembly is primary function, but also distribute batteries for many battery manufacturers.
[ Hits: 425 | Votes: 1 | Rating: 4 ]

Automatic Antenna Selection System - Antenna switch at K6XX
[ Hits: 2497 | Votes: 0 | Rating: 0 ]

Ground Systems - Basic ground system functions, lightning and safety ground, RF return-path ground and induced ground currents
[ Hits: 1110 | Votes: 1 | Rating: 9 ]

NHRC-2 Based Repeater Controller - NHRC-2 Based Repeater Controller A perfect controller for a simple repeater or link, or portable/solar powered system.
[ Hits: 580 | Votes: 3 | Rating: 7 ]