spectrum lab

Homebase10 Antenna for 28MHz - The Homebase10 is a simple to make wire halo antenna for 10m (28MHz) built using parts available from the local DIY store.The resulting antenna is very effective on 10m despite its small size and light weight.

Beacon Station MO 189.5 KHz - This site is dedicated to experimental low frequency operation in the 160 to 190 kHz spectrum. LF beacon MO is no longer active. This page is retained only for reference information.

Radio Syd in The Gambia - Ex commercial AM radio station available for rent, house on the beach, no permanent antennas, space for multi-op activity.

W4GBR DeKalb County Amateur Radio Club - Active for over 25 years, providing amateur radio service to Northeast Alabama

North Alabama DX Club - NADXC - Alabama USA

G7VKK Virtual Ham Radio Station - G7VKK's Virtual Ham Radio Station has an S-Meter webcam and is fully web controllable via his website.

US Communication antennas - UnderBumper diversity licence plate antenna system (front and rear license plates) become the antennas. Available in VHF, UHF, Dual Band and other frequencies. We also manufacture mobile antennas for HF VHF UHF wideband antennas

Meteor Shower Calendar - This lists the major shower activity and is compiled from information available on the net

ARRL Expanded Tests on TS-570 - ARRL Laboratory Expanded Test-Result Report Kenwood TS-570D

How QST elaluates new products - A look behind the scenes, learn how the ARRL laboratory evaluates new products, and what all those numbers mean to you by WA1SVF

What Rig Should I buy ? - ARRL Lab notes, article by WB8IMY on helping choosing the best transceiver for your needs.

TH-D7AD extend RX - Kenwood TH-D7AD -- Modifications

Kenwood TH-D7AD extend TX - Kenwood TH-D7AD -- Modifications

Converting TH-F6 into a TH-F7 - TH F6 and TH F7 is, actually, the same transceiver. Well, there is a difference: one diode.

Horn Antennas - Our webshop lets you buy horn antennas & microwave engineering products online. Products are usually available ex-stock for immediate despatch.

Ham World, Inc. - Amateur radio dealer in Talladega Alabama

National Test Equipment - New, used, & reconditioned electronic test & measurement equipment sales, rentals, & service. Agilent/HP Spectrum Analyzers, Tektronix Oscilloscopes, Fluke Calibrators, & much more.

International SWL-Registry - Easily obtain a free and unique International SWL Callsign and, if you wish, be added to the Worldwide Online SWL Directory. Official certificates are also available.

Microwave Antenna Design Calculator - Available to run on all major operating systems, this free calculator provides quick estimation of antenna size required for a given gain and frequency.

PstRotator - PstRotator handles just about every controllable rotator in common use: Prosistel, Green Heron, HyGain, RC1 MDS, Rotor-EZ Idiom Press, Yaesu Az and many more PstRotator includes automatic tracking for satellite or EME communications, using programs like WSJT, VQLog, TACLog, Z-Track, GJTracker, EME System, Trak_SM, WXtrack, WinOrbit, Orbitron, Nova for Windows, Sat_Explorer, SatPC32, Win-Test. PstRotator supports remote control over TCP/IP.

5-band RF Power Amplifier - This project uses a widely available IRF510 MOSFET, work on HF 80, 40, 30, 20 and 17 meter bands

500w 4X150A/7034 TubeVHF amplifier - 500w 4x150a/7034 tube 26-30mhz vhf output amplifier

Batteries for Emergency Communications - The purpose of this paper is to provide a basic understanding of the different types of batteries available on the market today so the reader can make an educated decision about what type of battery will best meet their needs for Amateur Radio emergency communications Brett Hammond - KB3HGP

SQ2OMC HF Transceiver Priority listing - Description of the homebrew shortwave multiband SSB transceiver, that covers 0.1 - 30MHz. made by SQ2OMC

LY3LP laboratory - QRP DIY and more