spectrum circuit

NS9RC North Shore Radio Club - The NSRC is a not for profit organization that extends through the entire spectrum of Amateur Radio.

Anritsu - Provides technology and solutions for the electronic test and measurement, optical, rf and microwave, wireless, wired, telecommunications. Make Frequency Counters, Antenna and spectrum analyzers, power meters, signal generators

TekNet Electronics - Frequency conunters, multimeters, oscilloscopes, spectrum analyzers, power supply and RF network analyzers.

Hameg Instruments - Spectrum Analyzer, Oscilloscopes, EMI Measurement and Power Supplies German test equipment maker

Link Instruments - Pc based test and measurement equipment and instrumentation: digital oscilloscope, logic analyzer and spectrum analyzer.

Yokogawa - Maker of optical spectrum analyzers, digital oscilloscope, digital power meters and more test equipmente related products

Applied Instruments - Applied instruments manufactures test and measurement equipment for the broadband telecommunications industry. products include carrier generators, signal level meters, rf switches, spectrum analyzers and a return alignment system.

PROMAX Electronica - Spanish makers or signal generators, spectrum analyzers, testers

Allocation of Radio Spectrum - This is the table of contents to a list showing how the radio frequency spectrum is allocated to different users in the United States.

IC-746PRO TX Problem - The IC-746PRO is a great rig. But it has a few reliability issues, especially with the earlier-production units. This article addresses four problem areas:. IC151 on the RF Unit. Driver circuit on the PA Unit. HRX-muting circuit on the CTRL Unit. Predriver on the PA Unit.

M.C. Howard Electronics - Distributor of Common Electronic Components Such As Memory, Integrated Circuits, Discrete Components, Cables And Services. We Also Provide Prom Programming, Simm Manufacturing, Testing And Custom Kitting.

DERF electronics corporation - Distributor of electronic components like diodes Transistors Microcontrollers Microprocessors connectors, switches, relays, integrated circuits, eproms, leds

AP Circuits - Printed circuit board fabrication

Leader Instruments - Test Equipment Depot - New and pre-owned agilent, avcom, fluke, hewlett packard, instek, iwatsu, leader, lecroy, tektronix,and more. Analog oscilloscopes, spectrum analyzers, network analyzers, power supplies, video test equipment, generators, meters and more

Alliance Test Equipment - Alliance Test buys and sells used network analyzers, spectrum analyzers, function generators, mulitmeters, probes, optical power meters, calibrators, attenuators, testers, and more from Tektronix, Fluke, Rhode & Schwarz, Advantest, LeCroy, Fujikura, California Instruments, NetTest, Keithley, Actrena / TCC, Instek

Lehman scientific - New unused surplus and used electronic test and laboratory equipment including spectrum analyzers, signal generators and oscilloscope

Scientific Surplus - Buy, sell and trade electronic and scientific instruments. Oscilloscopes, microscopes, signal generators, RF equipment, short & long wave radios, meters and wattmeters, detectors (radiation, metal), spectrum & network analysers military equipment

Naptech - Naptech buys and sells quality test equipment from hp, tektronix, including spectrum analyzers & peripherals, oscilloscope, frequency counters timers, signal generators, multimeters & voltmeters, RF & power meters, microwave amplifiers

A fool-proof VOX - A circuit which had been used in many other application before. The configuration described here is optimized for IPHONE/radio operation.

Lightning Protection : Protecting each I/O line - KB22UT Article on how protecting ham radio station and in particular I/O Lines such as AC power, coax cable, control circuits, telephone line.

HV power supplies - WV0NNI 2,800 VDC @ 2 Amps Continuous Variac adjusts filament voltage. A voltage doubler circuit, well suited for smaller, compact linear amplifiers.

Designing Op Amp Audio PreAmplifiers - Design guidelines for Op Amp audio preamplifier circuits by Mike Martell N1HFX

How to desolder components - Learn how to correctly desolder electronic components from printed circuit boards

How to solder - Key facts about how to solder, how to solder wire, how to solder pcb's, and including general soldering techniques and the best ways of making good solder joints for electronic circuits and construction. Includes video

2.4GHz Spectrum Analyser - This is a simple project that allows you to monitor the 2.4GHZ band in your immediate vicinity.