mosfet transistor

OH7SV Matti Hohtola Ham Projects  ^pop - The most modern QRP transceiver in 2004,Direct Conversion HF Transceiver with DDS LO, 50 ohm to 200 ohm HF wide band transformers, Wilkinson splitter for RX measurements, Windom baluns 2001/2004, Ferrite rod antenna for 80 meter, Magnetic Loop Antenna for 80 m, Mascot Switched PSU 9320 modification to 8A peak current, 150W MOSFET linear amplifier for 80m, 80 m HF SSB/CW Transceiver

Antique Radio Page - The antique radio page is the best place to start if you want to learn about antique radios. this award-winning site features a huge image gallery with hundreds of antique radios (tube, transistor, and crystal sets), useful articles, reviews of out-of-print radio reference books, and the amazing arp directory where you can search and find antique radios on the web!

Old Radios - Dedicated to the collection and preservation of old radios, both tube and transistor.

Barlow Wadley XCR-30 Home Page - A site all devoted to the first full coverage HF transistorized portable set of the world.

Tom's Radio Collection - Tube and transistor radio collection

The transistor radio directory - Transistor and its history and lot of related infos

Tom's Antique Radio Repair - Specializing in antique, vintage and tube radio repair, all makes. Transistor radio repair- from the 50's to the present. Free estimates.

ICOM 746 Temperature Measurements - The ICOM 746-Pro has acquired a history of NEC 1678G (IC-151) MMIC and driver transistor 2SK2975 failures. The failure of IC-151 appears to be a combination of ESD damage from electrostatic charge on the antenna entering IC-151, and perhaps thermal heat.

All American - Distributor of electronic components, ull range of semiconductors (active components), including relays, circuit breakers, transistors, diodes, memory devices, microprocessors, microcontrollers, and other integrated cuircuits, as well as passive components, such as capacitors, resistors, inductors, and electromechanical products, including cable, switches, connectors, filters, and sockets.

The Electronic Hoard - A discount component supplier. Transistors, Diodes and various SMT components are available.

2 Element beam designer - This is a DOS program that will design a 2 element beam for a given frequency. The gain is about 6db's the front to back ratio is about 10 db's. The SWR will be about 1.8 to 1, so for transistor rigs a tuner is needed The only information required is the freq in MHZ..

MOSFET amplifier for 80 mt.  ^pop - Picture index of 150W MOSFET linear amplifier for 80m 1996, includes photos and schematics

10 W Linear Amplifier - This article describes a 10 watt linear amplifier that is capable of delivering over 15 watts into 50 ohms and uses cheap plastic transistors that are used in CB equipment. by Harry Lythall - SM0VPO

HF QRP Lin Ampl - HF QRP Linear Amplifier with 2x 2SC2166 + 2x 2SC1969 Push Pull Transistors (13.8V)

2 m. Band VHF PA 5 Watts - A VHF power amplifier made with two cheap RF transistors, 2N3924 as driver and a BFS22A for final stage, giving an unexpected output power of 7-8 watts maximum

Low power VHF RF amplifier - Low power VHF RF amplifier with VMP1 Mosfet by IZ1BTS IK1XPD

A simple VOX circuit - Here is a 3 transistors 6 diodes circuit that is a Voice Operated Tx PTT control as well as an ANTI VOX circuit to stop mis-operation from Rx noise by G8MNY

NiCad battery charger - A basic nicad battery charger using a single medium power transistor.

Transistor Specifications - Transistor Specifications, ``RF Power Mosfets ¹ HF VHF transistors

80m SSB & CW transceiver - The 80m SSB & CW transceiver design is based on an already proven concept used in ATLAS amateur transistorised transceivers from 70's

5 Watt 40 Meters transmitter - This circuit is unique in that it uses a power mosfet as a final rather than a conventional bipolar transistor.

Radio Shack Special - Here's an amazing one transistor FM radio that has amazing sensitivity, selectivity and great audio output

IK4AUY Sergio - Advanced QRP Low Cost Mosfets HF Linear Amplifier with schematics, IMD, gain data and more. Six articles about amateur radio.

2m Band VHF antenna pre-amplifier - Homebrew pre-amp for 144-146 MHz amateur band and OSCAR Satellites, using BF981 Dual-gate MosFet. Gain ~15 dB, NF=1dB.

144 MHz preamplifier with BF981 - Design of a preamplifier for 144 MHz with 1 dB NF and 23 dB gain using BF981. This amplifier is using a low cost silicon MOSFET (BF981 from Philips) to give more than 20 dB gain with around 1 dB noise figure on 2 meter.