mosfet mixer

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

Khabarovsk RadioClub AMUR - RUSSIA Ham radio club AMUR, FarEast Khabarovsk. News, events, photos.

Gisela Dierking NF/HF-Technik Germany - Many interessting accessories, like unversal audiofilter, Mixer interface for sound card, highvoltage powersupply,accessories for 706, hamradio vacation, and more

Adonis - Adonis microphones for amateur radio, and accessories, vox, double vox, voice memory, voice mixer

I0JXX - The I0JXX is an italian company that offers market their projects, also sells electronic products of high quality, both for Ham, both Broadcast and their accessories. VHF Antennas, mosfet power amplifiers, filters, insulators, power dividers, telescopic poles, antenna masts

CONEX - DTMF Remote Controls, DTMF tone generators and broadcasting products, remote broadcasting via cell phone, cell phone mixer and remote phone keypad

Ivie - Manufactures automatic mixers, analog and DSP signal processors, room combining and matrix mixers, and audio test equipment for just about any customer application.

RF Circuit design basics - Ebook by Akira Matsuzawa Tokyo Institute of Technology, Building blocks in RF system and basic performances, Device characteristics in RF application , Low noise amplifier design, Mixer design and Oscillator design

Eurofrequence Dierking in Germany - Accessories, like universal audiofilter, Mixer interface for sound card, highvoltage powersupply, accessories for 706, hamradio vacation,Roger Beep, Microphons, Headsets and more. Please look

DSPRX - Signalprocessing for SSB - Direct Conversion Receiver using Phasemethod for Sideband Supression, does all necessary signalprocessing for Direct conversion Receivers using IQ-mixer for demodulation.

WINRAD by I2PHD  ^{updated  pop} - Winrad is a free software program designed to implement a Software Defined Radio (SDR), meant to run under Windows XP, Windows 2000, or Windows 98SE. In a nutshell, it accepts a chunk of up to 96 kHz coming from a complex mixer in form of two signals, I and Q, fed to the PC sound card.

QuickMix - Freeware windows program that allows you to store configuration of your audio mixer in a settings file, and to restore the mixer to that state whenever you want. Useful for digital mode operations where different dsp programs may require different audio in and out settings.

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

5-band RF Power Amplifier - This project uses a widely available IRF510 MOSFET, work on HF 80, 40, 30, 20 and 17 meter bands

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

Active attenuator - This active attenuator works as a simple mixer by WB2HOL

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

Hombrewing an HF Transceiver - This page will describe the construction of a multi band SSB transceiver with all its components Band Pass Filter, Oscillator/Modulator unit, RX/TX Mixer TX Amp I.F. Amplifier AGC VFO Driver amplifier Receive audio amplifier Final amplifier Low pass filter Digital display and VFO stabiliser

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.

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

HDR-2005 Receiver Workbench - Homebrew HF receiver with quadrature sampling detector QSD (aka Tayloe Mixer)

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.

80m Passive Heterodyne Receiver - Using a full-size antenna and a reasonably sensitive headphone, this simple switching mixer will produce an amazing abundance of signals on 80m.

Harmonic Converter for Spectrum Analyzers - Extending the frequency coverage of spectrum analyzers, Harmonic mixer by Matjaz Vidmar, S53MV