trunk frequencies

Efficient Feed for Offset Parabolic Antennas for 2.4 GHz - Possible solutions to the problems of efficiently illuminating SAT TV offset parabolic antennas in the use on WLAN frequencies of 2.4 GHz..

JOTA Frequencies - World Scout frequencies, to easily find Scout stations, listen in on the proper Scout frequencies

KC7ZRD The North Valleys Simplex Group - This group is located just north of Reno, Nevada and primarily uses simplex frequencies.

Vegas Scanner - Las Vegas Police Fire EMS scanner. Also includes Henderson and Clark County Trunking System.

Efab Antenna Solutions - Antennas for the HF frequencies for portable or emergency field work.

AIR 802 Antennas - Manufacturer of WiFi (2.4 & 5 GHz), Marine WiFi, Military and other antennas of various frequencies and styles.

US Communication antennas - UnderBumper diversity licence plate antenna system (front and rear license plates) become the antennas. Available in VHF, UHF, Dual Band and other frequencies. We also manufacture mobile antennas for HF VHF UHF wideband antennas

Digital Modes Frequencies - Digital Communications Modes and Frequencies

Satellite Frequency List - List of satellite frequencies from HT to VHF and UHF

Space frequency listing - Downlink frequencies for all kind of satellites

Digital Modes Samples - Audio files of many digital modes. Many were recorded in the HF bands an most others are found on VHF/UHF frequencies.

Using Olivia MFSK - Short description of the olivia mfsk mode and explanation of how to use olivia mode and proper radio setup including recommended olivia frequencies

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

Two-Meter VHF Repeaters in the U.S. Priority listing - New field-tested Two-Meter VHF FM repeater frequencies for 33 US states

AMSAT : Satellite Operating Frequencies - A comprehensive list of Ham Radio satellite frequency usage listed in order of frequency

Small Antennas for High Frequencies - This is about Small Antenna types and their properties which can help choosing proper antenna for high-frequency wireless communications as: two-way radio, microwave short links, repeaters, radio beacons or wireless telemetry

Global Frequency Database - Frequencies from all over the world. 25000+ total records, 4600+ records feature exact GPS locations.

Cruise Ship and Maritime Monitoring Frequencies - Cruise Ship and Maritime Monitoring Frequencies - cruise ship frequencies maritime scanning radios vhf uhf

Scanning sydney - Site dedicated to Radio Scanning in Sydney. Containing Local Frequencie, Frequencies lists, GRN talkgroups. and NOW Online feed.

Radio Works - RadioWORKS is a tool for calculating various items related to radio waves and radio wave propagation. Get detailed information about a frequency, such as the free-space wavelength, band classification, propagation methods, common transmitter configurations, etc. Calculate antenna lengths or frequencies. View a 3D coverage map by providing a latitude / longitude coordinate and transmitter height.

RadioComm - RadioComm can be used to program your Icom radio's memory, or to create nice radio-frequency spectra or to interface your radio to a huge database of frequencies.

Ham Dashboard - Iphone App with list of nearby repeaters in the UK, along with details of input and output frequencies, a map, and a handy bearing arrow for each repeater.

GU-43b Tetrode - The GU-43B tetrode is used for wideband power amplification at frequencies up to 100 MHz in RF equipment. This tube is generally considered analogous to the 4CX1000.

RF Connectors for upper frequencies - WA1MBA article on RF connectors for microwave

W3LPL Receiving Bandpass Filters - Project of receive only filters optimized for minimal loss and very high rejection of frequencies below 75% of the filter center frequency by K1TTT