15 element

A 5 elements Vee log-yagi for 10m - 5 elements "vee" log-yagi for 10m band- boom lenght : 4mt. Gain : over 10 dBd , f/b =over 40 db (deep null) f/b= min 20dB for different polarization signals

2 Meter 10 Element Quagi Antenna - This antenna was designed by N6JSX Kuby for Transmitter hiding. Fitting the requirements of directionality, high gain, and portability. This antenna was derived from the ARRL Handbook information on Quagi's and Yagi's; in the absence of two meter Quagi information, UHF Quagi dimensions were scaled into 146 MHz use.

K4TX Delta Loop for 40 Meters - 40 Meter 2 Element Parasitic Delta Loop

6elements 6.4 Mtr 50MHz LFA - A Compact 6el 6M Yagi with over 32dB F/B and more than 11.6dB Gain!

Hairpin match for the 5 elements Tonna for 6 meter - How to improve the gain of your 5 element Tonna yagi for 50 MHz by roughly 3 db!

8-Element 430 MHz Quagi - Picture and notes of a 8 elements Quagi antenna for 432 Mhz b Paul Bock, K4MSG

The Impact of Current Distribution on Array Patterns - Technical Correspondence, QST, July 1990 - Why even "perfect" phased array element currents don't produce perfect patterns.

The Bazooka antenna - The Bazooka-antenna was developed by the staff of M.I.T. for radar use. The original Bazooka used coaxial cable for the entire radiating elements.

The EH Antenna analyzed - This report is a recent analysis of the EH antenna using the Pspice program and considering the antenna as a set of circuit elements

Antenna Transmission Line Power Splitters - Several ways of splitting power to feed two like (50 ohm terminal impedance) antennas.

Mounting elements to a boom - Here is an easy method to mount elements to a boom, this can be realized at home, without the need of special tools

F5KEE Quagi 8 elements - An 8 element quagi antenna for 2 meters band, with pictures and diagrams, in french

A homebrew 10-element 900 MHz quagi - A 10 elements quagi antenna for 900 mhz

Coaxial Traps for multiband antennas - A new perspective on the analysis and design of this popular antenna element. By Karl-Otto Müller, DG1MFT

WB9KMO Ham Radio Video Library - The Ham Radio Video Library is a continuous loop of several ham radio-related video clips. The current clips are Monroe School ISS Contact (15 minutes), DARPA Grand Challenge - Ghostrider (5 minutes), DARPA Grand Challenge - Stanley Wins! (5 minutes), JOTA - Jamboree On The Air (15 minutes) and SBARC Tesla Presentation (50 minutes) - times are approximate

WSJT - WSJT is a computer program for VHF/UHF communication dedicated to EME. Support FSK441 for meteor scatter, JT65: for EME and extreme troposcatter, JT6M: for meteor scatter (optimized for 50 MHz)EME Echo: for measuring your own echoes from the Moon, CW: for EME QSOs using 15 WPM Morse code

WBCQ The Planet - This summer, WBCQ is running The Voice of the M/S Katie, live radio broadcasts originating from our radio ship the M/S Katie in Boston, Massachusetts. WBCQ broadcasts 50,000 watts on each of its four international shortwave transmitters on 5.110, 7.415, 9.330 and 18.910 MHz

WZ1V's VHF modifications page - A collection of modifications to the AM6154/55 linear amplifier

N1IBC Eimac 4CX1500B HF Power Amplifier - 1500 Watt HF power amplifier

JA3MHV Amplifiers - 4CX1000A x2 AB1GG Power Amplifier, 21MHz 15W and 3.5/7MHz 20W SSB Transceiver by JA3MHV, 50/144/435MHz 80W Linear Amplifier

K0GKD Solid State amplifier - High Power Solid State 600 Watts Output Motorola MRF 150 FETs

N4IP HF and 6 Meters amplifier - A solid state amplifier for HF and 6 meters band by N4IP

4CX1500 - This is a 4CX1500B grid driven amplifier that is built like a tank. The unit is considerably over designed as can be seen in the pictures documenting the construction

VE6FI 4-1000a amplifier - 15-160 meters HF power amplifier

KD5FZX 23 CM GS-15B PA - GS23B / 4CX1600U 1KW Power amplifier for 23cm