w2ihy noise gate constru

144MHz Slim Jim antenna - 2 Meter band Slim Jim antenna using a 300 Ohm ribbon cable

8 elements Yagi for 70 cm - 70 cms 8-element Yagi Beam, this Yagi antenna should not need a balun as it will resonate under its own merit.

1:6 Balun for the HF bands - 11 wdg bifilar on Amidon T 200-2 Toroid core

W0BTU Beverage Receiving Antenna notes  ^updated - Comprehensive information page about bi-directional Beverages, including applications, construction details, and tips.

Coiled Coax Choke Balun - A very practical Balun for aerial work is the choke type

Homemade antenna mount - Homemade Jeep Tailgate Antenna Mount for use with a Swing Out Tire Carrier

Patch Antenna Array - The Patch Antenna Array was constructed and used for various satellite up and down links at my previous residence in Melbourne, Victoria from 2003 - 2007

DL6WU Yagi antenna - The DL6WU yagi for 23cm bu M1EEV

7Q7MH - Explorer Scouts from Scotland will construct new facilities at the Makwawa National Scout Camp in Malawi in July 2011 plan to operate on 14, 18, 21, 28 and, possibly, 50 MHz.

G5LK Reigate Amateur Transmitting Society - Founded in 1959

Gateway Amateur Radio Club - Club in Cleveland, White County, Georgia, promoting friendship, mutual assistance, and learning.

Amateur Radio World Prefix Maps - Unbranded amateur radio world prefix map by Southgate ARC

Tropospheric propagation - Article about tropospheric propagation and the way in which radio signals at VHF and above propagate over greater distances than strictly line of sight in the troposphere

ICOM IC-746PRO Problems - The purpose of this web page is to try to investigate some of the issues around ICOM IC-746PRO reported by many radio amateurs through out the world; and unfortunately not properly taken care of by ICOM.

ICOM IC-746PRO Problems - The purpose of this web page is to try to investigate some of the issues around ICOM IC-746PRO reported by many radio amateurs through out the world; and unfortunately not properly taken care of by ICOM.

Alpha Uniform SWL DX Radio Club - Welcome to Alpha Uniform Audio Unity DX Gateway to the Lands Down Under Free Memberships

Repeaters - Repeaters is an amateur radio repeater directory for iphone and ipad that displays repeaters as pin annotations on a map. It allows you to locate nearby repeater information at a glance, and with just a few taps, navigate to any repeater in the country.

4CX250B PA regulated supplies - A PA project by John, G8MN

Transistor PA Biasing - Here is a simple circuit that can deliver the peak base current needed for linear ssb operation

Homebrewing attenuators - Construction of attenuator, suitable for fox hunts at 144mhz

Recovering old NICAD and NMHI Cells - Old Nicads batteries and sometimes NMHI batteries usually end up with several cells being short circuit, as they suffer from crystal growth in the electrolyte

144/432MHz Homebrew Antenna Diplexers - VHF UHF diplexer by G8MNY

CW K Pip Tone Unit - This is an add on for anyone who wants an automatic CW \"K\" PIP tone after each over.

30 m Band Direct Conversion Receiver - The direct conversion receiver described consists of only a bandpass filter, mixer IC, VFO and audio filter. With only 22 parts, this simple circuit should take a few hours at the weekend to construct.

2m sniffer - How to construct a “Sniffer” for 2m DF by Denis G3UVR