base towers

80-10 Meters Doublets antennas - All band doublet antenna based on NB6Zep's design and an 88 foot flatop version

An automatically tuned 7-30MHz mobile antenna - This is a base-loaded vertical antenna that mounts on the car's roof. The loading coil is designed as a variable inductor, with a three-legged chariot that travels up and down inside the coil, with grooved brass wheels running on the coil turns, and driven by a slotted rotor tube.

W8JI Antenna Towers - 318 and 200 ft insulated towers

W5AJ Towers - Some of the interesting shots of the W5AJ Rohn 25G tower

Big Time Operators CB Club - Homepage Of The Big Time Operators CB Club Based In Muncie Indiana USA

Papa Alfa Tango - DX Club based in portugal

eHam QSL manager Finder - An online database of QSL managers at eHam maintained by K4WA

A Ham Radio Public utility HF Station - Merging Internet technology with Amateur Radio holds great promise. This article discusses the authors’ experiences in putting several Internet Remote Base stations on the air. By Stan Schretter, W4MQ, Brad Wyatt, K6WR, and Keith Lamonica, W7DXX

Penninger Radio - Mast clamps, tipping bases, roof mounts, tire mount, masts, series of snap together mast tubes.

Heinz Bolli AG - Antenna tuners, components, filters and baluns manufacturer based in germany

Bitscope - An affordable high bandwidth mixed signal pc based digital oscilloscope logic analyzer.

Tashjian Towers - Towers by Tashjian, Engineering, Design and Manufacturing

Universal Towers - Freestanding aluminum towers manufacturer

Jetstream - Antennas, base mobile scanner and vhf antenna, coax cables, coax switch, Lightning Arrestor, mounts, power supply, speakers and wattmeters

Radio Scanner Guide  ^updated - A guide to selecting Radio Scanners; divides both new and used radio scanners into 6 categories, based on their specifications and features - e.g. analog trunking scanners, digital trunking scanners, etc; provides specifications on each model

Circuit Specialists - We specialize in pc-based data acquisition systems, test equipment, electronic components, disk on modules, choke and coils, diodes, capacitors and connectors, potentiometers, crystals, resistors, relays

QuickQSL - QSL printer, caps, and paper log books, based in NV USA

PoliceScannerWeb - Dealer for Uniden Radio police scanners, including the Uniden base, handheld, and NASCAR racing scanners for public fire, police and rescue information and weather alerts.

NEC4WIN - NEC4WIN is a 32 bits commercial antenna simulation software based on MININEC3 developed by the Naval Ocean Systems Center in the 70s and 80s. It runs under Windows and can be used to simulate, analyze and optimize wire antennas, beams, verticals, etc. NEC4WIN has limitations. They are the same as Mininec3 on which the engine is based.

FreqTweak - FreqTweak is a tool for FFT-based realtime audio spectral manipulation and display for Linux. It provides several algorithms for processing audio data in the frequency domain and a highly interactive GUI to manipulate the associated filters for each. It also provides high-resolution spectral displays in the form of scrolling-raster spectrograms and energy vs frequency plots displaying both pre- and post-processed spectra.

Base-Station RF Power-Amplifier Biasing - Power amplifiers used in base stations require biasing for proper RF performance. This article explains the two classes of biasing that are prevalent in the RF industry, analyzes their characteristics, and shows implementations with existing ICs.

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.

Easy Morse Code Keyer Circuit - based on the famous Curtis family of morse keyer chips and has a proven record of dependability.

144Mhz preamplifier - A preamplifier project based on Rainer DJ9BV project, in french

9cm transverter - Designed for portable operation, it runs on 12v, and has an OCXO-based local oscillator.