dual gate fet

SSA - Non-Directional Beacon - Airport Locator Beacon, The NDB-SS05 is a complete Dual Non-Directional Navigational Beacon system built to ICAO Annex 10 requirements. It is designed for continuous duty, outdoors operation, easy maintenance and is supported by a full complement of accessories and spare parts.

GMRS Consumer Information - The General Mobile Radio Service (GMRS) Is a two way radio service used by families and individuals for personal use. This site provides basic information on this service.

Darley Amateur Radio Club - An Anglo-Amercian Radio Club - G0FOS - GB4JUL - We are an Anglo-American Radio Club, based near Harrogate, North Yorkshire, England, serving the needs of local hams and providing fcc license examinations.

N1QC Granite State Ham Radio Club - The GSARA is a general purpose Ham radio club. We meet on the 2nd Friday of the month in Bedford NH at the Earl Legacy park (summer)or the Safety center (winter).

Pipo Communications - The highest-quality and most reliable Dual-Tone Multi frequency encoders.

Otto Engineering - OTTO Communications designs and manufactures audio accessories for two-way radios used in public safety, police, fire, retail, hospitality manufacturing and other markets.

Autotena - Antenna manufacturer in Taiwan, products range are RF communication antennas ( CB, VHF, UHF, Dual band, Base Station, Marine, GPS,GSM, PCS, Cellular, DVB-T ) , Amplifiers , Mounting Kit ,Accessories & Related products.

ALT Fabrication - ALT Fabrication manufacturer and distributor serving the telecommunication industry. Boomgates, Sector frames, grounding, electrical.

Space Weather Education - Special space weather course designed to teach individuals without any background how to predict space weather

ScanFan - The largest and most accurate source for Minnesota public safety and amateur radio frequencies! Message board, new scanner information and much more!

Missouri/Kansas Scanner Radio  ^updated - Provides comprehensive frequency listings for various public safety agencies and private organizations who operate across the Kansas and Missouri Region.

Pascall Electronics - Pascall's specialist RF & Microwave division specialise in components for radar, EW receivers, navigation & location equipment, communication and marine safety systems.

EMF Safety Superstore - The Ultimate Source for Electromagnetic Pollution Detectors, Shielding Devices and Protection Information

Spy Number Stations - So you want to listen to the spies?

Introduction to number stations - long article on number stations history

Nec2Go - Powerful antenna modeling tool using NEC 2 computing engine. Nec2 specifically provide users, either those experienced with the Nec2 processes, or for those who are neophytes but want to model their own antennas. Nec2Go uses a simplified process for defining the antenna structure and then providing view of the structure, plots (2D and 3D) and other significant data that is pertinent to the design. This simplified process uses an edit file with equations for all definitions.

BR-universal-Filt - Freeware real time DSP filter particularly for applications of amateur radios , IIR, FIR filter, low-pass, high-pass, band-pass filter, band suppressor (notch filter) individually adjustable

Cobracom - Oscilloscope, Realtime spectrum analyzer, Impedance meter, RLC bridge and signal generator for Windows. Is a Windows application that converts your PC into a powerful dual-trace signal analyzer (oscilloscope, FFT etc...) . Uses your PC sound card as an Analog-to-Digital a Converter to digitize any input waveform and as Digital-to-analog Converter for the signal generator. True 24 bit adc/dac 48K/96k/192k sampes/sec.

SV2AGW Packet Engine Professional - This is a brand new program based on the well Known "AGW Packet Engine/ AGWPE". It is a special Windows utility for amateur radio packet users that interfaces multiple packet programs and multiple TNCs (Terminal Node Controllers) / modems: lets one TNC be used by more than one packet program, lets one packet program use more than one TNC, lets your sound card be used as a physical TNC or modem, no need to buy a TNC , has an optional 'TCP/IP Over Radio' feature that lets you send TCP/IP data sentences via packet to internet gateways

SpectraScope - SpectraScope is a simple Windows interface program allowing your computer to view up to two audio waveforms in either the time or frequency domain. The program is a Windows soft panel operating as a dual channel oscilloscope and spectrum analyzer. The useful frequency of operation is 20 to 10,000 Hz in the time domain and 20 to 20,000 Hz in the frequency domain. The program uses the computer sound card to capture the audio input.

Amateur Radio RF Safety Calculator - University of Texas Amateur Radio Club RF-Calculator. This is a main beam power density estimation program intended for use as part of a routine evaluation of RF safety compliance with FCC regulations

ICOM IC-746PRO Dead TX - The purpose of this web page is to try to investigate the ICOM IC-746PRO Dead TX problem reported by many radio amateurs through out the world; and unfortunately not properly taken care of by ICOM. If you are the owner of either the ICOM IC-746PRO or the IC-7400 you may already have experienced the Dead TX Issue. If not you may sooner or later.

Station Lightning Protection - This website outlays the basic knowledge, safe design and installed equipment that are employed in the lightning protection system of a US Coast Guard Auxiliary Radio Facility. This should also be relevant to the Civil Air Patrol, MARS, and Amateur Radio stations who provide emergency communications capability for public safety or the military

Safety: RF awarness guidelines - Although Amateur Radio is basically a safe activity, in recent years there has been considerable discussion and concern about the possible hazards of electromagnetic radiation (EMR), including both RF energy and power frequency (50-60 Hz) electromagnetic fields. This section summarizes what is now known and offers safety precautions based on the research to date.

QRM and noise reduction Priority listing - You will find on these pages my experiences and results on antennas and local/non-local QRM/noise reduction. Using a broadband vertical active magnetic loop and a home made / designed broadband amplifier. Two vertical magnetic Alford loops are used in an array. Analog and Digital Signal Processing and a dual phase coherent Software Defined Radio (SDR) are used. By PA0SIM