gate city

2m 4-element Quad you can build - A 2m 4-element quad antenna that you can build easily

70cms and 2m Dual Band Aerial - A prototype antenna built using a single approx. 2.3 meter length of 4mm stainless steel wire

23cm 6-element Yagi design - A neat, 6-element yagi antenna for the 23cms band from DG2GAJ

A simple 3 ele yagi for 144Mhz - A very easy-to-build 3-element yagi antenna for the 144mhz band

MetroCor - Northern New Jersey, New York City/Long Island and Westchester County frequency coordination

South Notts Amateur Radio Club - Local amateur radio club to the south of nottingham city

KRG Kidderminster Repeater Group - A non-profit organisation responsible for the maintenance of the GB3KD 144MHz VOIP Repeater, and KidderLink simplex gateway, plus the KIDDER packet radio node and GB7PZT bulletin board system.

Newport Amateur Radio Society - Founded in 1975, we are in the heart of Newport City above the M4

W5PAA Aeronautical Center Amateur Radio Club - Oklahoma City, OK

UK Amateur Radio statistics 1975-2000 - The Amateur Radio statistics covering 1975-2000 and 2006-2010 have been made available on the web.

TinyTrak 4 and APRS - Tiny Trak 4 APRS and a new IGate

New York City Area Repeater Directory - 144/220/440 repeater directory centered on New York City

Amateur Chirp Project - Amateur projects to investigate radiowave propagation - G3PLX\'s chirp project, ionosonde database, and more

AO-51 on Baofeng UV-3R - A video of Clayton W5PFG trying his $60 Baofeng UV-3R handheld on the Amateur Radio satellite AO-51

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

Lead Acid Batteries - An interesting article on lead acid batteries by G8MNY

Power Supply for Floating Pb Batteries - An easy-to-build power supply for floating pb batteries

Bandpass Filters for Portable Usage - These are QRP rated 3 Pole Butterworth filters based on a design by K4VX, feature simplicity, almost no insertion loss, and reasonable rejection on the other ham bands.

FT290 CW KOX Circuit - This is not actually break-in but just KOX circuit. It can only be used on the CW mode otherwise it keys up the Tx

Non-relay instant RF Switching - Coax lines to do the RF switching. The advantages are instant switching, no power wasting DC control circuits.

High AMP Crowbar Protected PSU - A crowbar protected PSU project by G8MNY

12V System Surge protection - A surge protection project by G8MNY

Logic Probe - An easy-to-construct logic probe for the electronics enthusiast

Oscilloscope Tester - Circuit to assist in the setting-up and calibration of oscilloscopes

HSMM project using Linksys WRT54G - Create a APRS digipeater and internet gateway using WRT54G