portable power

EH antenna power lost considerations - Out of Balance Current or Longitudinal Mode Current in the Coaxial Cable causes radiation from the coax. But how large a proportion of the total power is radiated or lost from this Current?

Portable QRP Antennas - October 2003 Albuquerque ARC Newsletter - Portable QRP Antennas And The 1000-Foot-High G5RV

Portable Loop Antenna  ^pop - This loop it is small and light enough to carry while operating, it disassembles into small but rugged pieces that fit easily in a backpack or gym bag, and it can be tuned from 14 MHz to 30 MHz. This tunable magnetic loop antenna is my contribution to the well established art of amateur loop making. Can be tuned from 14 MHz to 30 MHz.

A Portable Multi-Band Magnetic Loop Antenna  ^pop - Described here is a simple multi-band magnetic loop antenna designed for 20, 30 and 40 metres, but by changing the overall length of the wire coverage of other bands is feasible

Portable loop antennas photos - HF pedestrian operation using loop antennas by PY1AHD

Wholesale Solar - Solar panels, solar and wind home power systems, pre-wired power panels. Wholesale prices for everybody. Free solar design.

Spiderbeam antennas  ^pop - High Performance Lightweight Antennas. The spider beam is a full size lightweight tribander yagi for 20/15/10m, made from fiberglass and wire. It has been specially developed as a highly efficient antenna for dx-pedition and portable use.

Elcom Research - Small enough to carry it in your shirt pocket and powerful to fit your needs. It will be your companion for years, thanks to the "FirmwareLiveUpdate" feature. Use it for everyday packet, for APRS, as a Tracker with a GPS or as APRS digi.

Low Power Radio Modules - Low power radio modules - supplying rf modules, rf transceivers, radiometrix transmitters receivers, low power radio modules, scada, frequency hopping, 900 mhz, wireless data transmission, data telemetry, gps modules & receivers and more

ElectronicsUSA.com / Whiterook Products - Manufacturer of small portable telegraph keys, keyer paddles, and electronic keyer products.

Spectra Engineering - Manufacturer of high performance rack mountable MX800 and MX920 Radio Base Stations and Repeaters. Also supplies 2RU rack mounted 13.8V DC power supplies. Based in Australia.

Integrated Tower Systems-ITS - Premier OEM of portable tower systems, Communication-Site-on-Wheels (COWs), heavy-duty fixed foundation telescopic structures commercial and military, worldwide sales and leasing

How ham radio works - How Ham Radio Works, by Gary Brown, Ham radio can be very portable and affordable. In this article, we will look at ham radio and show you how to get started in this wireless world

CW Operators' QRP Club Inc. - The CW Operators' QRP Club exists for those who enjoy low power amateur radio and homebrewing.

Yaesu FT-817 - Yaesu FT-817 Portable QRP MF/HF/VHF/UHF Transceiver, an assortment of technical information

Eurofrequence Dierking in Germany - Accessories, like universal audiofilter, Mixer interface for sound card, highvoltage powersupply, accessories for 706, hamradio vacation,Roger Beep, Microphons, Headsets and more. Please look

AGL Ham Store - Antennas, antenna towers, coax cables, lightining protection, wattmeters, power supplies and accessories dealer based in Texas

Batteries.com - Buy batteries for laptop computers, camcorder, lithium, cordless phone, UPS, watch, hearing aid, camera and other power supplies faster, easier and cheaper.

AEA - Wireless software - AEA Wireless Director Software Series turns PC's (running Windows 95/98/2000/ME or NT) into powerful tools that expand the use and power of SWR, Return Loss and Complex Impedance Analyzers.

ERP Calculator Plus - ERP Calculator is an Amateur Radio software utility designed to perform a side-by-side comparison of two Ham Radio antenna systems. ERP Calculator comes pre-programmed with data files including published data for several popular brands and types of coax cable as well as several popular antenna system brands and models. ERP Calculator displays values of ERP, Antenna Power Gain, Antenna Feed point Power, Antenna System Gain in dB, Antenna Gain in dBd, SWR Attenuation in dB, SWR Power Attenuation, Coax Loss in dB, and Coax Power Loss

UR5FCM Log - UR5FCM Log a powerful Ham Logbook. It is a working center on radio station on daily realization of radio communications, and also, since version 1.1.61 new features of work in digital aspects of connection

ptelnet - ptelnet is a powerful communication software for the Palm Computing platform, By using the built-in TCP/IP stack (telnet mode), it acts as a Telnet Client. By accessing the serial (RS232 or IR) port directly (serial mode), it acts as a standard Terminal Emulator. Freeware

SIGVIEW spectrum analyzer - Complete real time signal analysis software with wide range of powerful FFT spectral analysis tools, statistics functions and comprehensive visualization system.

SWIFT WX - SWIFT WX Version 2.0 combines a powerful GIS mapping engine with real-time weather maps and storm tracking data making it the most comprehensive storm tracking application available.

SP5GJN - HF Power Amplifiers  ^pop - HF home meade power amplifiers by SP5GJN