super regenerative recei

9 elements 50MHz 12.5Ohm Yagi - A DX antenna for Serious hams. High gain, super flat SWR. The ultimate 9el 50MHz Yagi

20 elements 432MHz LFA Yagi Priority listing - A0 element super low-noise simple to build Yagi for 70cms. Uses 1/4 inch and 12 inch tube/rod

Build a K9AY Receive Antenna - This article is how a K9AY switch-able receive antenna was built by Darren Hatcher, G0WCW. It also goes a step further telling you really how to do it, rather than suggesting what to do.

Delta RX antenna used at FO0AAA - Delta 160-meter receiving antenna used at FO0AAA

Fabricating Impedance Transformers - Fabricating impedance transformers for receiving antennas by John Bryant

Low-Band Receive Antennas - 98 Pages PPT presentation file on low band receiving antenns by Al Penney VO1NO / VE3

The EWE in the Garden - A Tropical Band Antenna with good Receiving characteristics

EWE Antenna comments - cq-contest reflector comments about the performance of the EWE receive antennna collected by KA9FOX

EA4FRB Melchor Varela - Interested in electronics, active in HF and 6M, mostly in digital modes and also enjoy listening and receiving from utility stations. Many interesting homebrew projects

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

HI-Z Antennas - HF receiving systems and components, band pass filters, array controllers, HI-Z pre amplifiers

Metal Supermaket - Buy metal online in small quantities, cut to size. Aluminium but also copper and steel parts

RF Systems - RF Systems develops and produces antennas and accessories for governmental and military organisations, shortwave and scanner listeners, radio amateurs, yachting circles and professional users of receiving and transmitting equipment.

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

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

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.

I-PSK31 - Ipsk31 is a modem based on Bpsk31 protocol for ham radio digital transmissions. Can be used on IPhone and Ipod Touch, and let you transmit and receive PSK31 directly from your Apple device.

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

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