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Kiwa Electronics is a company that specializes in accessory equipment for the radio enthusiast. Our products include Filter Modules to improve receiver performance, a High Performance Medium Wave Air Core Loop Antenna for improved broadcast band reception, the Pocket Loop Antenna, the Earth Monitor, BCB Rejection Filter and Broadband and SW Preamps. We also offer numerous performance upgrades for popular receivers.

A full line of single-channel synthesized and crystal controlled vhf and uhf fm receivers. Great for repeaters, telemetry, and control applications.

SDR Receiver a compact high performance HF software defined radio receiver designed to be used in fixed or portable stations. Version 2 of the receiver is now available. It now has an RF pre-amplifier using a power MOSFET and other revisions to improve it's performance both as a stand alone receiver and as an IF panadaptor with HF and VHF transceivers.

A regenerative receiver project at AA5TB

Here are two simple modifications / repairs for the Kenwood TS850 HF transceiver, dual receiver mod, and battery pack replacement

Virtual Radar Server is a free windows decoder of ADS-B signals received by several radio receivers and support even networked data feed. The Server publish a Google Maps-based display of aircraft positions and flight list

Dutch society of collectors of old ex-military radio equipment and other nostalgic receivers and transmitters

Aricle on designing regenerative receivers By Dr Eddie Insam

A one-tube battery-powered regenerative receiver.

HF Weather Fax for Android decodes weather fax 120/576 charts and satellite images through the microphone of your Android phone or tablet. Just set your phone or tablet next to the speaker of your marine radio or any other shortwave receiver with sideband capability and start recording weather charts and images

A short wave regenerative receiver project by Charles Kitchin, N1TEV

A COM component for transceiver/receiver CAT control. Not a complete program, but rather a component tool that allow software developers to connect their program to a supported transceiver.

Xcorder is a windows Freeware audio recorder written by MM0BFF, designed to work mainly with radio receivers but may be used also in several different ways for audio recording needs.

FTBVR5K is a memory management program for the Yaesu VR-5000 scanning receiver.

UM58 a regenerative receiver project

Regenerative receiver for 5 amateur bands : 80 40 20 17 15m by F5LVG

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

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

DroidNavtex is able to decode NAVTEX messages from your receiver through the Android phone or tablets microphone or through a connected interface.

A new SDR-receiver from the italian SDR developers community. Low-cost, DDS-less Software Defined Radio full coverage receiver for all HF bands, used with powerful software on the PC for multi-mode operation

Manufacturer of Receiver and Transmitter for Digital Microwave radio and VSAT equipment

SDR project based on a TI AFREDI8201 chipset with both ADC and DDC functions. This SDR needs no external PC and is a RX only.

Forum thread comparing FT-60 to VX-6R

BktTimeSync synchronizes the PC time using an internet time server (NTP server) or a GPS receiver connected to USB, serial port or Bluetooth. Great for use with digital modes like FT8, JT65, JT9, JS8Call and others. For the operation of this program requires an active internet connection or a GPS receiver. This program works on all versions of Windows 32 or 64 bit

Shortwave Receiver Reviews & News, DX Links and global press.

Ham Radio On line shop, kenwood yaesu icom alincon ten tec dealer, antenna rotors, antennas, antenna mounts, microphones, antenna mas, receivers and scanners based in Essex England Uk

A page about fascinating Very Low Frequency and natural radio, with lots of streaming audio links from remote receivers. Some experimental stereo pairs around the world.

Private homepage by DG8JZ with information about the VR5000 receiver including some usage tips. Mostly in german

All about the JRC NRD-525 receiver. Modifications, review, manuals, tipd and tricks

A three tube regenerodyne receiver by Gary Johanson, WD4NKA

Offers Scanners, Shortwave, Wide-Band receivers, accessories from Icom, AOR, Sangean and Grundig.

Using ferrite to reduce radio frequency interference with your PC monitor or antennas with your receivers or transceivers.

My first homemade SSB and CW receiver 10 kHz to 30 MHz

A multiband WebSDR receiver system, located in Bolton, England accessible via the RSGB web site

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

AOR USA Web site, manufacturer of base and mobile receivers, handheld receivers, digital voice modems, spectrum display units, frequency monitors and antennas

A Simple Project: One Transistor TRF Regenerative RX

Useful and well thought out regenerative receiver design

open source software designed to control and program the ICOM IC-R8500 receiver

This is a compact three transistor regenerative general coverage receiver with fixed feedback

HamStationExtreme, hamradiostation and scopestation makers. CallSign Software provides a variety of Radio Control Packages to drive ICOM, Elecraft, and Ten-Tec's latest DSP based Transceivers and Receivers.

This low power transmitter is developed for ARDF exercising purposes but of course can be used as super QRP transmitter either. With 1 or 2 meter wire as antenna and a ARDF receiver with ferrite-rod antenna the range is about 100m but with better antennas and a 'real' receiver the range is probably much larger.

SSB-electronic gmbh based in Germany produces coax cables and connectors, rf parts and components, SDR receivers and transceivers, transvertes, attenuators, coax relays, precision directional couplers.

This is a 6 band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands. This is a 6-band receive only filter designed to protect your receiver front end and provide 45dB reject at the stop bands. Stop band reject may be limited by the relay isolation. Worse case isolation is at 28 MHz or 35 dB or better. Relay K3/K8 protects the filter during transmit via the PTT line. A 25-50ms delay must be used between transmit and PTT. Do not rely on your radio to provide adequate delay with out using the PTT. You logging software must be set to allow a delay between PTT and time of 1st transmit. This filter will not work with VOX or QSK keying as you will damage the filter.

Watkins-Johnson - WJ HF-1000 Receiver

Sigmira is a free Software Defined Radio (SDR) application program that runs on Windows and Linux. It operates with with an external conventional receiver, RFSpace SDR-IQ, RPSpace SDR-14, or SDR-RADIO.com networked receiver

Mapping software which links a Garmin GPS receiver to your Macintosh. Includes Maidenhead grid squares and beam-pointing maps.

AMANDX is a site dedicated to the new listener. There are articles on antennas receivers etc.

Open source software designed to control and program the ICOM IC-R75 receiver

A WebSDR receiver located in Turin Italy providing 40 meters band.