alternative power

Portuguese Castles Award DCFP - Castles and Fortresses of Portugal Diploma

Samlex america - Manufacturer industrial and consumer power supply products including switching power supplies, solar panels, solar charge controllers, inverters.

marnic.org - F5VLB and EA4EOZ have designed a small but powerful system using satfinder and standard LNB to make radioastronomy. A step by step descritpion for the novice about radioastronomy, VLB and listening to echo of meteorite.

WSPRnet Weak Signal Propagation Reporter Network - A group of amateur radio operators using K1JT's MEPT_JT digital mode to probe radio frequency propagation conditions using very low power transmissions. Computer sent/received Morse signals received by amateurs and collected on an online database.

DB37 FT-450 Cable - Schematic for Data, power, CAT, Key and Mic connection interface cable

Powering the FT-817 - Coupling the Duracell DR36 battery to the FT 817 The main advantages on this system are, the weight, size, quick battery changing and no stress to the FT 817 power connector

Allied Electronics - Test equipment, capacitors, connectors wire and cable, power supplies, batteries, oscillators, crystals and resistors

Jameco - Jameco carries over 50,000 semiconductors, passives, interconnects, electromechanical, power supplies, LEDs and other popular electronic component

Pihernz - Spanish radio dealer offer accessories, antennas and battery chargers, mounting accessories, cables and connectors, radio kits, power supply, pmr, vhf/uhf radios, all products for CB, ham radio and SWL.

WSPR - WSPR implements a protocol designed for probing potential propagation paths with low-power transmissions. Stations with internet access can automatically upload their reception reports to a central db

Getting started with alternative energy - Comparison of different alternative energy sources.

2 x GI-7B 432 MHz amplifier project - UHF RF Power amplifier used to work EME

GS-35b HF Power Amplifier - The amplifier described here is an update of the High Power linear amplifier described in the July, 1995 issue of the "Radiolubitel. KW i UKW" magazine in Belarus. In English, this is "Radio Amateur. HF and VHF". by Gary Podgorny, EW1MM

Old 813 homebrew Amp - Restore an old 813 homebrew Amp with power supply from recycled parts

50 MHz VHF power amplifier - Class C tuned VHF power amplifier for the 6-meter band by ON6MU

144 MHz Power amplifier with 2XGS35 B - A VHF power amplifier with a triode 2XGS35 B by FF66JMT, in french

Power amplifier for 2m rig - An RF power supply for 144 MHz schematics and instructions

Coax Charts - Coax cable attenuation and power ratings charts

Selecting Capacitors - Selecting capacitors in RF power applications at HF by I0JX

TS480 power level mod - Increase TS 480 PEP power level

An universal power supply for rigs - VU3NSH article on high current universal supply for rigs

RF Radiation and Electromagnetic Field Safety - Preprinted from the 1997 ARRL Handbook for Radio Amateurs. Thermal Effects of RF Energy, Safe Exposure Levels, Cardiac Pacemakers and RF Safety, Determining RF Power Density

N2PK SWR Meter - HF Forward Power & Return Loss (SWR) Meter

0-30MHZ RF Power Measurement - HF 100W LCD PIC16F877A SWR Meter at fox delta

How's Your SWR? - Chart showing how SWR effects how much power you actually radiate from your antenna.