daiwa amplifier

Granta Contest Group - HF amplifier - The Granta Contest Group was founded in 1997 by Mark G4AXX, Colin G4CWH, Simon G4EAG, Andy G4KNO. The Group gets it's name from the River Granta (or Cam), which passes through Cambridgeshire and Essex. Using is a 160-10m "desktop kilowatt" linear amplifier using an Eimac 4CX1000A tetrode

CommsAudit - Commsaudit uk, i/q quadrature , hf receivers, rf, multicoupler, multicouplers, switch matrix, antenna matrices, masthead amplifier,, vhf receiver, uhf,

Lunar-Link Amplifiers - Complete 70 cm amp by lunar link systems

Amplitec linear amplifiers - HF VHF UHF amplifiers, designed by hams for hams, and morse keys manufacturer

RF Amplifiers - Solid State and TWT Amplifiers From 1 MHz to 40 GHz with Power Levels from .1 mil Watt to 2.5 Kw

Rake amplifiers - Leitner elettronica manufacturer of rake linear amplifiers

Worth-More Electronics - HF RF Amplifiers made in USA

Gateway Electronics - Amateur radio kits, cw keyers, vhf mini receivers, 2 meter preamplifier and more audio related kits, based in St. louis, Mo and San diego, ca USA

EGAntennes - Distributor of PKW antennas and Reimesch Kommunikationssysteme RF amplifiers. Manufacturer of HF wire antennas Based in France.

Class E - This program simplifies the design of the single-ended Class E amplifier. Operation is intuitive and encourages "tuning" and exploration.

K5LAD's 4-1000A Amplifier

Collins TRC-75 - Autotune Linear Amplifier

IK5MEN HF amplifier 10-160m. - Italian page including pictures schematics diagrams of an home made linear amplifier using four EL509 in parallel. Output power is about 700W.

G3YXM 500 W PA - 40-80-160 meter band linear amplifier

SUPERVOX - S 300 - AM CW SSB linear amplifier for 160 80 and 40 meter band

LA7MI 40W RF Amplifier for 80m - 40W Linear Power amplifier with FETs for 80m Some notes about saturation in ferrite- and iron-cores. Written by LA7MI Stein Torp, N-5005 Bergen

A 20m monoband Power Amp - The 20m monoband 4-1000 amplifier, by Jelmer (pa5r), Herman (pa0ten) and Frans (pa5ca)

Negative feedback output circuit - Negative feedback is often referred to as shunt feedback in conjunction with emitter degeneration.

13cm RF Amplifier - This amplifier uses two 60w Spectrian amplifier boards with the usual input and output hybrid coupler and combiner.

144 MHz 1.2 Kilowatt Amplifier - 144 MHz Kilowatt Amplifier with a Gu74b.

GI-7 on 2m - Schematic & drawing for a GI-7b 2m linear amplifier

GJ4ICD's 8877 50MHz Amplifier - A Compact 8877 50MHz amplifier and Power supply

IK8MKK Home-Made equipment - Two 50 Mhz amplifiers and antenna switch

KI0LE Amplifiers and Preamps - Picture gallery of vhf uhf amplifiers

50 MHz GS35b Power Amplifier - OZ1DPR six meter power amplifier using the russian VHF triode GS35b