sub vfo receiver

WebSDR in Czech Republic - 80 meter WebSDR receiver by OK1KPU in castle Doubravka Czech republic

WebSDR in Canada - WebSDR receiver located at the University of British Columbia Amateur Radio Society by VE7KA

30 Meters receiver - A simple 30 meters receiver for low power QRSS Beacons and PSK31

80m fox hunting receiver - Schematic anc PCB for a fox hunting receiver for 80 meters band

How Satellite Doppler Tracking Works - The Doppler Effect allows the distance between a satellite transmitting from space and a radio receiver on the ground to be measured by observing how the frequency received from the satellite transmitter changes as the satellite approaches, passes overhead, and moves away.

How to Measure Receiver Sensitivity - Testing an Elecraft K2 sensivity using a signal generator, headphones and an AC Voltmeter

A 2.3GHz to 432MHz receiver converter - Receiver converter that can be plugged to the backside of the Yaesu FT-817 battery powered portable transceiver

Quick Guide to Operating the Yaesu 857D - This Quick Guide to Operating the Yaesu 857-D, through a series of five graduated exercises, introduces operating the radio, its controls, and builds up confidence with the rig.

Ubuntu ham radio software - Ubuntu software packages in "karmic", subsection hamradio

TK3 for IC-R3 - tk3 is open source software designed for the ICOM IC-R3 receiver. Though tk3 is intended chiefly for Linux, MacOS X, and BSD users, it will work on Microsoft Windows too.

Friis-It NF for iPhone - Friis-It NF is the first iPhone OS based application that allows you to calculate noise figure, system sensitivity, and cascaded gain for an RF Receiver system

A PIC16F84 based CW Decoder - CW decoder project that automatically adapts itself to the CW rate and may be employed for learning purpose substituting the traditional tone generator and offering the capability of displaying the keyed code.

A CW QRP Transceiver for 20 m band - The little QRP presented in this article may be built in a gradual manner, it is divided in two main modules (plus VFO), you may also complete only a single part (RX or TX module).

A simple receiver - A very simple receiver project by PA2OHH

Receiver Dynamic Range  ^updated - Receiver dynamic range is the ability of a receiver to receive a weak signal without loss of readability while a strong signal is present.

40 m Band Direct Conversion Receiver - Practical and usable direct conversion receiver for the 40 m CW band

WB9JPS Direct-Conversion Receiver - Direct-Conversion Receiver project

What Does Your S-Meter Reading Mean - Two receivers compared, Drake R8A and Palstar R30

Realistic DX-100L mod - Modifications and improveents for the realistic DX-100L HF receiver by ON6MU

Homebrew regenerative receiver - UM58 a regenerative receiver project

Regenerative receiver for the AM band - Build the Moorabbin, a regenerative receiver for the AM broadcast band by Peter Parker VK3YE

Austin's Regen Receiver - QRP ARCI regenerative reveiver project

Designing Super-Regenerative Receivers - Aricle on designing regenerative receivers By Dr Eddie Insam

A Portable Regenerative Receiver - PA2OHH portable regenerative receiver

A 2 tube regenerative receiver - A low voltage 2 tube regenerative receiver