baofeng uv 200

160 Meter Vertical - This is a 90 foot tall top loaded vertical for 160 meters. It is constructed from aluminum irrigation tubing and has four sets of four guys each by w7iuv

40 meter 4-square antenna - A permanent working 40 meter system based on a 4-square antenna

Collinear Microstrip Patch Antenna - Design of a 869 Mhz Collinear antenna

Radial System Design - Are the lengths of antenna radials related to the height of a vertical? By N6LF

Folding J-Pole Antenna - Also known as the Backpacker's Delight Antenna. This Folding J Pole Antenna is the original design of Mike Heiler KAØZLG and was featured on the Front Cover of the March 2005 QST Magazine.

Loop antenna for NDBs - Nondirectional Radio Beacons, NDBs, can easily by received with this loop. Resonant in the 200 – 500kHz range, the loop antenna is directional, sensitive, and quiet.

Homebrew Buddistick 2007 - W3FF article about the buddistick portable vertical antenna in a PDF file

A short Quagi for 1298Mhz - Based on K5OE design by GM1SXX

S-MATCH Universal ATU - PA0FRI's "S-MATCH ATU" published in RSGB's RadCom March 2003). The Balanced Universal ATU Photographs of ZL2ML's S-Match were added.

1200Mhz 40elements YAGI - A table with element size and spacing for a 40 Elements yagi antenna for 1200 Mhz

EME Antennas - EME activity at W7IUV

STØRY - Sudan DXpedition March 2003 - On March 20, 2003, we brought Sudan, one of the most needed and top-ranking DXCC entities, on the air with the call sign STØRY (Sierra Tango Zero Radio Yankee). After some 48,000 QSOs, STØRY became hiSTORY on March 31, 2003.

Mono County CQP Expeditions - In 2004, 2005 & 2006, after many years of very successful multi operator county expeditions, Jim (W6KC) did single operator expeditions to Mono County.

CN8WW 2000 - Morocco dx pedition in 2000

TX5C Clipperton 2008 - DX pedtion to clipperton island 2008

OL7CAV - Czech ham radio organization, renewed in 2004.

NI4CE West Central Florida Group, Inc - Founded in 2001 to manage and operate West Central Florida's only regional linked amateur radio repeater system. Currently, the NI4CE Repeater System operates nine repeaters from five sites with more on the way. NI4CE covers all or parts of twelve counties in West Central Florida and provides mobile coverage along the areas I-75 and the I-4 corridors.

CRES Amateur Radio Club - We are a general purpose ham radio club serving Columbus and the Central Ohio area. We run the W8ZPF repeater, 146.67-, located in Columbus, and hold bi-monthly meetings on topics of interest to radio amateurs.

The Yaesu FT817ND - GM1SXX review of the Yaesu FT-817ND

The Tube Center - Supplying over 2000 different vacuum tube types, valves, grid caps, sockets and capacitors. It is easy for Antique collectors, Ham radio operators, audio enthusiasts, broadcast enthusiasts and amateur radio hobbyists to buy, sell and trade vacuum tubes, electron tubes, audio tubes, valves, grid caps, sockets and capacitors

4 x 813's RF Amplifier Deck - This amp project was an exercise in cheap! The design criteria was to use only components in the JUNQUE BOX

Ameritron AL-1200 to gs35b Conversion - The Ameritron AL-1200 Amplifier is in current production. In its factory configuration it uses a single 3CX1200A7 (triode) tube, grounded grid configuration. Re-tubing the AL-1200 with a GS-35b with success.

Hillar's Amp BTI LK-2000 Amplifier to gs35b - The BTI LK-2000 was originally a 3-1000z based amplifier, converted to a GS-35b.

A low cost UHF/VHF duplexer - Duplexers for dual band radio are usually high pass filter and low pass filter combined in the same box. This circuit is a design within a cost of US$10.

Soldering for the Terrified - Notes on soldering techniques by GM1SXX