40m receiver

Center-Loaded Off-Center-Fed Dipole - 6 band - Multiband Center-Loaded Off-Center-Fed Dipole (CL-OCFD) antenna that work on 80m 40m 30m 20m 15m 10m by ON4AA

Omiss - OM International sideband society incorporated nets 75M, 40M, and 20M Nets begin one hour earlier during Daylight Savings Time

Web-controlled Shortwave Radio  ^pop - Drake R8 Communications Receiver Reston Virginia, USA

PA3ANG Online Receivers - Control an ICOM PCR-100 and listen to the audio stream. This web controlled receiver si based in the Netherlands by PA3ANG and offer 10kHz - 1300MHz in AM, FM, FMW

PSK31 Web Receiver - These web receiver based in Kiew Ukraine show PSK31 activity on 20m band 14.070-14.074 MHz remotely by using a web browser. Requires java by the MixW team

Optoelectronics - DTMF, RF, decoders receivers and accessories icluding computer interface boards, frequency counters, tone decoders, spectrum sweeper and nearfield receivers

The Ventenna - Rugged, disguised 2m, 220MHz, 440MHz, and 2m/440 dual band antennas, HF portable antennas, portable dipoles.

INRAD International Radio - Supplier of custom designed, high performance quartz crystal filters for communications receivers and transceivers, for Yaesu Icom Kenwood and Collins radios

Icom America - Manufacturer of amateur, avionic, land mobile, marine and communications scanner & receiver equipment.

Terrasat Inc. - Manufacturer of Receiver and Transmitter for Digital Microwave radio and VSAT equipment

Valve radios - Viking SW design and produce valve (tube) receivers for the ham and SWL.

Advanced Communication Sys - Repeaters, transmitters and receivers manufacturer for ham radio and commercial applications

Hi Pro - Repeaters, transmitters, receivers, small power Amps and Controllers

Alinco - Alinco amateur radio transceivers manufacturer. HF Radios, Mobile transceivers, VHF UHF handhelds, receivers, scanners, power supplies and accessories

WiNRADiO Communications - Pioneering the integration of radio and personal computing, WiNRADiO Communications are the manufacturers of award-winning range of computer-controlled WiNRADiO receivers for professional and amateur applications.

Twinplex Receiver - How to Build the Twinplex Regenerative Receiver

Funkenhauser's WHAMLOG & Mediumwave DX Links - Free WHAMLOG files download page, medium wave (AM/BCB) resources, homebrew loop antennas, radio receivers, DX lists, DXpeditions, ODXA MW Notebook.

CwGet  ^{updated  pop} Priority listing - A program to decode morse code (CW) via sound card to text. It can work as narrow-band sound DSP-filter also. No additional hardware required — you need only receiver and computer with a sound card. Can integrate with AALog logger.

Radio Propagation & Diffraction Calculator  ^{updated  pop} - This is a radio frequency propagation calculator for the transmission path between an RF transmitter and a receiver.

Scanner VHF-UHF monitoring - Scanner VHF-UHF software for monitoring VHF-UHF range by means of receiver ICOM IC-R8500.

40MHz Frequency Counter Module - Design for a very low cost 6-digit frequency counter module using of the shelf components

40 meter 100 watt Transmitter - 40 meter transmitter by K9GDT

SM0VPO Homebrew pages  ^pop - Harry Lythall SM0VPO/G4VVJ homebrew web site, contains several projects, antenna notes and plans, receivers and transmitters plans, regularly updated.

40 meter CW/SSB Receiver - The K9GDT 40m receiver

DX-302 Communications Receiver - features, Operation and Specifications about Realistic DX 302