2m calculator

A 5/8 mobile whip for 2m - Schematic for a a 2m 5/8 λ mobile whip, courtesy WB4MYL

Flower Pot Antenna for 2 and 6 mt - The diagram below shows the basic arrangement of the 2m Half-Wave version of the antenna. A 6m diagram is available too by VK2ZOI

An Inexpensive Vertical Antenna for 2m - This antenna is constructed from RG58 coax and a length of 1.5 m PVC pipe

Slim Jim Antenna Build - Homebrewing a slim jim antenna for 2m and 70 cm

HF Helical Whip Calculator - Build your own HF helical whip antenna for mobile or portable operation

Slim Jim antenna calculator - How to make a simple but effective Slim Jim antenna. It includes a calculator to work out all the mesurements for the frequency you require.

Online Antenna Analysis and Design Software  ^updated - Free online software to calculate wire antenna power patterns, directivity, input impedance using method of moments.

Helix antenna for 2 meter - Homebrew a helix antenna VK5ZAI style for satellite use

A homebrew magnetic antenna mount - A homebrew Magmount for 2m antenna

Normal Mode Helix Antennas for HF - Normal Mode Helix Antennas for HF Mobile

Slim Jim Antenna Using Twinlead - 2 Meter Slim Jim Antenna Using 300 Ohm Twinlead

432 MHz Antenna Comparison Chart - Comparison of several UHF antennas by DF9CY

70 MHz bandplan - The long range bandplan for 70 MHz by OZ2M

South Lakeland Repeater Group - Supports 2 analogue (GB3LD 2m & GB3LF 70cm) and its NEW D-STAR digital GB7LF.

GB3JB 2m Repeater - Willoughby Hedge - The Green Repeater Powered by Wind and Solar Energy

QRA Calculator  ^updated - Converts your Lat/Long into an IARU Locator

AO-40 VHF Converter - 144 MHZ to 28 MHZ 2nd Down-Converter for AO-40 Sat

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.

iRFC for iPhone - IRFC offers a full Radio Frequency Calculator on the go for network impedance adaptation with smith chart

OZ2M - Next generation beacon - Next Generation Beacon hardware platform encompasses both analog and digital modes, i.e. CW FSK and MGM in a mixed mode configuration. The advantage of the mixed mode is that humans can decode the CW FSK by ear and the MGM can be decoded by computers way below what is audible. Therefore the MGM can be used for “pre-human-conditions” or early warning monitoring.

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

Stub HF filter - Multi transmitter filters for HF Bands

Power netfilter - Homebrew a Power netfilter

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

UHF on a VHF Rig - This circuit enables fair copy of strong 444 MHz signals, off a local repeater, using a 2m rig and a 1/4λ 70 cm indoor ground plane antenna.