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Founded in 1992 this DXing club has over 1725 members and is based on the 6288 feet high summit of Mount Washington in Sargents Purchase, New Hampshire, USA

Portable Base Systems, Mast Clamps, Aluminum Tubing

QSL Printer shop, products include Photo QSL cards, Eyeball cards, and State QSL Cards, based in Hampstead, MD USA

Maxdao: offer you 7/16, N coaxial connectors, jumper cables, feeder clamps and grouding kits, surge arresters & brackets, wall entries and microwave components used in base tower, power dividers, couplers

Ferrite-shop is an on-line shop for ferrite toroids, cable cores and cable clamps based in The Netherlands

Online antenna parts store, providing many accessories for amateur radio antenna homebrewing. Boom joiners, aluminium parts, elements clamps, filters, ferrites, fasteners, plasti caps, dipole elements. Based in UL

KB3IFH Full Color quality QSL & Eyeball cards. Free custom design & imaging scanning, based in Hampstead, MD USA

Learn how to build and use an RF V-probe with better sensitivity than traditional neon lamps for measuring RF voltages on ground, chassis, and cables in your shack. This article explains the simple operation of the LED RF V-probe based on the properties of red LEDs, providing a cost-effective solution to prevent program and hardware failures caused by stray RF voltages. The circuit, wiring diagram, and comparison with a neon lamp are included, making it easy for hams to improve their RF voltage analysis capabilities.