rf amplifier plans

J-verical for 10 meters  ^pop - J-verical antennas for 10 meter band with photos and plans

50 MHz Antennas by DF9CY (4 & 6 Element)  ^pop - Two well performing 50 MHz antennas designed with W7EL EZNEC along to many other antenna projects and related articles

Romeo Fox Dx Group USA - Membership Info no cost to join

IOTA EU-110 Log St Nikola Isl - 9A/I2OGV, 9A/I2RFJ, 9A/I2ZBX, 9A/IZ2LSC 2010 dx pedition online log

HF Hamtrader Nes - Trader net frequencies

The Amateur Radio Flea Market - Treffpunkt Amateurfunk (German)

RSGB Region-12 - RSGB Region-12 Website for Cambridgeshire, Bedfordshire, Norfolk, Essex, Kent and Suffolk.

PD2RFU Jeroen - PD2RFU by Jeroen GoedĖl Fox United, Formula 1, Motors, links and all about ham radio

LinkPlus - LinkPlus products enhance the voice quality of HF SSB amateur. Eliminates virtually all channel noise and interference and greatly strengthens SSB radio signals

Commander Amplifiers  ^pop - HF anf VHF amplifiers made in U.S.A. by Command Technologies, Inc. now acquired by Palstar

QRO Technologies - HF amplifiers manufacturer

California Amplifier - manufacturer of solutions for worldwide wireless broadband communications

ACOM  ^pop - ACOM international, manufacturer of HF power amplifiers, HF Antennas, Antenna tuners, Switches and Crankup masts

Signal Engineering - Signal Engineering technologically advanced antennas with modern design and construction technique. Up to date information about current line of high performance 10 and 11 meters antennas.

Tesoel - RF-and Microwave Coaxial switches and relays

Mirage - VHF and VHF amplifiers including repeater rf amplifiers

Ameritron  ^pop - Manufacturer of amplifiers, antenna switches antenna Tuners, wattmeters and relay buffers, amplifier accessories, antennas and tubes and parts

Vectronics - Antennas, Filters, accessories, wattmeters, tuners and amplifiers.

Current Aurora status - The Aurora in near real-time from Sweden

The Sunspot Cycle - Sunspot Numbers, The Butterfly Diagram, the Greenwich sunspot data and sunspot realted infos.

National Weather Service - Some little known facts about the NOAA Weather Radio system

Radioman - Freeware dos VHF/UHF Logbook morse code facility, kenwood transceivers interface, moontracking, distance and bearing calculators by DF9CY but discontinued and unsupported

AREPS propagation programs - Collection of various propagation software by Space and Naval Warfare Systems Center, San Diego, Atmospheric Propagation Branch

RF prop  ^pop - RF propagation software

QRP Amplifier - HF Bands QRP linear amplifier by SM0VPO