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Drake R-4C Receiver Manual (Early Version - 6HS6)

The basics of radio receiver dynamic range performance used for specifying the performance of radio receivers used in radio communications systems.

Javiation page dedicated to the ICOM IC-R20 150KHz - 3305 MHz communication receiver

The Triangle ATV Association is an organization of hams in the Raleigh-Durham-Chapel Hill NC area who communicate by means of our own personal TV transmitters and receivers.

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.

Two receivers compared, Drake R8A and Palstar R30

A fully documented restoration project of a Hallicrafters SX99 receiver

Morse Code Decoder for Android based on the algorithms implemented in CW Skimmer. Morse Expert decodes Morse Code audio to text. It is optimized for decoding weak, fading signals in the presence of interference, especially on the Amateur Radio bands. The input audio might come either from the built-in microphone or from another device, such as a radio receiver.

RadioMasterList, a comprehensive receiver and transceiver directory. Performances and specifications for every radio set

Single antenna with multiple polarization for diversity, diveristy receivers and propagation effects on signal polarization

Nearly half of all reception problems are due to deficiencies or faults in the television receiver, the aerial lead or the aerial. This article will help you to check whether the problem you are having is due to one of these causes.

A schematic diagram of a homemade direct conversion receiver for 30 meters band

One-Cubic-Inch Direct-Conversion Receiver

This article will explain a few of the ways author use an external SDR and Linrad to enhance his K3 experience. Linrad is one of many available SDR receiver programs. The same could be done with any radio that lets you access its IF frequency output. Article from NCJ Nov Dec 2019

Online internet HF LW MF web receiver based in Baden-Wuerttemberg cooperative state university Ravensburg Campus Friedrichshafen running a T2FD antennan under roof.

High Performance Communications Receiver AKA, The Progressive Receiver

Drake R-4C Receiver Manual a Late Version edition

Tuned circuits for Progressive Receivers

tk150 experimental Software for the Standard VR-150 Receiver

The CAT Tool for WebSDRs. Allows to control public WebSDR receivers with a real rig connected via CAT control to your computer. It supports the classical WebSDR as well as Kiwi SDR interfaces Tune the VFO of your radio and see the web SDR follow in realtime

Homemade RF limiter project, to protect the K3 receiver front-end for high radiofrequency based on the original KD9SV project.

A tutorial on how to setup a receiver capable to decode SSTV signals with a small RaspberryPi version 2 and a RTL-SDR dongle. The author explains how to install the needed software to interface the RTL-SDR and a step by step guide to install the QSSTV software used to decode the signals.

Producers of custom name tags, luggage tags, club badges, Employee Name Tags, Special Event Badges, but also Comtech Amateur Radio Television Transmitters and Receivers D480 filters, Video cameras and accessories.

An SDR project, MDSR modulator-demodulator software radio, made using an inexpensive converter and a pc. MDSR has a transceiver and a receiver converters.

A very simple experimental short wave radio receiver. This is basically just a crystal radio with two stages of transistor amplification afterwards made with scrap components.

This article describes the construction of a high performance transmitter and receiver for SSB (voice) communication covering the 14MHz (20 meters) high frequency amateur radio band with output range 15 to 20 watts and a top audio sound quality both on transmit and receive.

Understanding Receiver Sensitivity by Monitoring Times

Receivers and transmitters by Collins , Drake , Hallicrafters , Hammarlund , National Receivers

A review of the Icom Receiver IC-R7100 by VE3CNU

Barest of bones APRS RF position reporter using a Raspberry Pi B+, USB GPS receiver, Baofeng UV-5R, and a mono 3.5mm audio cable between the Pi and the radio

Technical details of the Drake R-4C receiver

Vintage radio and scientific apparatus by john jenkins, include antique radios, Horn Loudspeakers, Vacuum Tubes, A.C. Receivers

FHD22 radio-relay transmitter and receiver by F4DAY

How to build a complete Single-Sideband amateur radio transceiver from scratch. Article published on hackaday dot com includes an introduction to radio architectures, ssb receivers and tramsitter

KiwiSDR Software-defined receiver at Bjargtangar Iceland covering HF Bands

Key details about the superhet or superheterodyne radio reeiver: basic overview; how it works; applications; design notes, all you need to know.

Since 2011, crkits offer radio kits that you cannot find on eBay or AliExpress. Includes HT-1A 20/40m Dual Band CW Transceiver Kit, D4D DSB Transceiver Kit for Digital Mode, R3500D ARDF Receiver, CW Transceiver Kit

The Drake R-4C Communications Receiver review

This FM wireless mike can transmit voice signals to any FM Radio receiver 100 meters away.

Useful for receiver sensitivity evaluations this Step Attenuator is a series of switchable Pi attenuation pads

The ICOM IC-R72E a neat compact communications receiver. Coverage: LW, MW, SW (0.1- 30.0 MHz continuous) discontinued in 1998

N-channel scalable coherent receiver that employs the RTL-SDR technology in order to create inexpensive multi-channel receiving systems.

Signal Capture and Analysis Software for The Icom IC-R20, PCR Family of receivers and the Yaesu VR-5000 receiver.

Drake R-4 Receiver manual

Official page of the IC-R20 wideband radio receiver now discontinued

A complete review of the Ten-Tec RX340 all mode HF receiver

Gimme Five reloaded, a compact 5 band QRP SSB transceiver in SMD technology. This unit covers 5 bands within the amateur radio spectrum (3.5, 7, 14, 21 and 28 MHz). Receiver is a single conversion unit with an interfrequency of 9 MHz. Transmitter uses 5 stages and has got a power level of 10 watts PEP output.

Sending the Audio from the Receiver to the Recorder, from the Recorder to the EQ, and sending the Audio from the EQ or Recorder to the Transmitter

A review of the Chinese version of uSDX USDR HF QRP Transceiver. Author made an extensive review of receiver and transmitter features.

A detailed review of the Icom IC-R75 30 kHz -6 0 MHz Receiver first introduced in 1999