repeater range

ZMV Spiral antennas - An experimental antenna similar to the TAK spiral antenna was evaluated for SWR response over the frequency range of 7.0 to 7.3 MHz, or the 40-meter band.

Easy Jpole Building - Easy home brew 2 meter jpole antenna build - under 20 bucks - Hits repeaters 45 miles away. Parts used bought at home depot build time 1 hour.

Doube Zepp extended antenna - An extended double zepp antenna by F5ZV in french

GB3CCX 10 GHz Beacon - by Gloucestershire Repeater Group England

HDSCS Hospital Disaster Support Communications System - A group of ham operators in Orange County, California that has supported over 30 hospitals since 1980. Includes information on how hams can provide hospital support in their own areas.

W9ICE - Ham amateur radio club experimenters repeater vhf contest indianapolis, carmel indiana, irlp ice D-Star

W1XM MIT UHF Repeater Association - The MIT UHF Repeater Association maintains the W1XM Repeater which is located on the top of the Green Building.

K2JJI Tryon Amateur Radio Club - Listen to the K2JJI repeater (146.70- PL 100.00 Hz) located on Fulton Co. NY. Coverage of grids near and around FN23/FN22.

Verdant - Designer and manufacture of Airborne Antenna & Radomes covering a range of applications. Products include vhf antenna ,uhf antenna,navigation antenna,comm antenna,blade antenna,vor/ils antenna ,L band antenna, direction finding antenna,DF antenna,vor,ils, IFF antenna on aircraft,aircraft antenna for airborne application.

EchoLink Interface - Easily build with about 10 USD in parts from Radio Shack. Should work with any radio by K3MK

Italian Repeaters - IK2ANE mantain a list all italian repearers in excel format.

About Repeaters - Introduction to repeaters, repeater bands, linking, repeater gateways, using repeaters and operating guidelines by WIA.ORG.AU

Arizona Repeaters Directory  ^updated - Arizona repeaters sorted by counties, with location maps! Also includes Robet's List of verified Arizona scanner frequencies.

St. Louis Repeater, Inc. - St. Louis Repeater runs four repeaters in the St. Louis Metro Area, including two with autopatch capability.

US Repeaters - USA repeater by ham-shack.com

New York Repeater Directory - It origionally included NYC Metro and Long Island, but has expanded to cover all of eastern New York as well. Future plans include expanding to cover all of New York state. The listings are a reflection of each repeater's true status, regardless of their coordination

Here Comes the Sun - Propagation and Sun - Solar activity can aid or hamper HF propagation beyond line-of-sight range, WA1SVF and N6BV answers to questions about Sun influence on radio signals propagation

European monitor post - This blog is about utility and military monitoring in the HF/VHF/UHF range.

Manitoba Swap and Shop - Ham radio swap and shop from Manitoba Repeater Society

Freq Finder: iPhone Repeater Directory - Freq Finder is an iPhone based Ham Radio Repeater Directory that locates repeaters based on the user location.

Power Supply Page - A good overview article on power supplies by Karl Shoemaker AK2O of the Spokane Repeater Group

Power Supply Analysis - This article explains how a linear power supply works, QST Article

Build a Repeater Controller - Build An Inexpensive Repeater Controller from a Basic Stamp 1 or 2 By Roger Cameron NØYOX

How to build a VHF repeater - Topic on eham forum on how to start building a VHF ham radio repeater.

NHRC-2 Based Repeater Controller - NHRC-2 Based Repeater Controller A perfect controller for a simple repeater or link, or portable/solar powered system.