spectrum amplifier

DaveMade  ^pop - 25-30 MHz base and mobile amplifiers

Emtron  ^pop - Amateur radio HF amplifiers and power supplies manufactured in Australia

RM Italy  ^pop - RM is an Italian company operating in the radio communication field since 1974, main products are: HF-CB-VHF-UHF-Dual Band Amplifier, Power Supply, DC-DC Converters Antennas and more

SGC, Inc. - Manufacturer of HF transceivers, antenna couplers, antennas, RF Power amplifiers, portable antennas, speakers and other accessories for 28 years.

HD Communications - Rf Connectors,RF Amplifiers,RF Filters,HF cable and accesories. Tower hardware valves and tubes

Zetagi  ^pop - Zetagi amplifiers, accessories, power supplies, microphones, SWR and power meters, battery charges

ScanStar - Radio spectrum monitoring and analysis tools for industry and government

Ten Tec  ^pop - HF, VHF, transeivers kit's, amplifiers and more.

US Frequency Allocation Chart - Colorfull radio frequency spectrum allocations in the US, in PDF Format

The Radio Spectrum  ^pop - Radio frequency allocations

VHF UHF Microwave Radio Propagation - Notes on radio propagation in that part of the spectrum (upper VHF to microwave) used by experimenters for high-speed digital transmission

North Ireland scanner info - Frequency spectrum, civilian and military frequencies

All Spectrum Electronics - Hobby kits and electronics, semiconductors, components, batteries, ham radio gear and more

CBC International CB Radio - "CB books, plans, and kits. Repairs, modifications, 10-Meter conversions, amplifiers, FM, unique high-performance accessories. Publishers of the classic ""Screwdriver Expert's"" Guide book."

DigiPan  ^pop - DigiPan provides a panoramic display of the frequency spectrum in the form of an active dial scale extending the full width of the computer screen. DigiPan is the result of a joint effort between myself and Nick Fedoseev, UT2UZ, the author of MIXW32, and is intended to make PSK31 operation easier and more enjoyable for everyone.

Spectrogram  ^pop - Shareware dual channel audio spectrum analyzer for Windows 2000/XP which can provide either a scrolling time-frequency display or a spectrum analyzer scope display in real time for any sound source connected to your sound card. Can be used for MTHELL, QRSS and DFCW by R S Horne

MDS Spectrum Analyzer - Software for radiomonitoring, radio spectrum analysis.

Zelscope  ^pop - Zelscope is a Windows software that converts your PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.

Amplifier Simulation Program - ASP 4.0 - Design weak signal GaAs FET or bipolar PreAmps. Automatically designs for optimum gain, NF, VSWR or all.

BBA-C1 Amplifier Card - This versatile broadband amplifier is used in several DX Lab projects.

Homebrew a HF Power Amplifier - HF power amplifier project by YB0AH

100W HF QRO linear amplifier - Based on Motorola MRF454, schematics and component list

432 MHz EME PreAmplifier - 432 MHz EME low noise amplifier. Circuit, components and image by Christoph Petermann DF9CY

70cm GS-23b Amplifier - 1500 watts amplifier for 70 cm band using GS23B /4CX1600U SVETLANA by LZ2US

SSB and CW Filter - A pdf file with schematics of an ssb and cw filter AF amplifier