Radio Direction Finding

The 2 metre fox or transmitter is a small low power transmitter which mounts in ...

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

How to homemade antenna to be used with a handheld on the aircraft band to ...

This active attenuator works as a simple mixer A signal from a 1 MHz oscillator ...

A simple adjustable passive attenuator by WB2HOL

The 80m TX described here is the well known ON7YD ATX 80 and timer combined ...

Documentation to build your onw 80m ARDF receiver

This page presents a project involving attaching an amateur radio transceiver to an Arduino to ...

This FOX BOX is based on a single CMOS 555 timer and uses an ISD1000 ...

The JUNIOR 2 presented here is a competition direction finder receiver that is easy to ...

Fox Controller designed by VE2JX and VE2EMM includes schematic diagram to build the transmitter ...

The RasHAWK team has used a Raspberry Pi as the basis for a networked RF ...

This antenna is an adaptation of the RDF2 two element close spaced Yagi antenna described ...

This RDF two transistor 144 MHz transmitter uses a 48 MHz scanner crystal as an ...

This RDF three transistor 144 MHz transmitter uses a 48 MHz scanner crystal as an ...

This FOX transmitter is equipped with a timer It can be set to start transmitting ...

This Radio Direction Finder Device Connects to an FM Receiver, Transceiver, or HT

The Microsniffer is a fully autoranging VHF or UHF sniffer which has been designed for ...

A Fox transmitter by VE2EMM with construction details part list and schematic diagram

Building the WB2HOL foxhunting beam antenna

A tape measure yagi antenna for 145.000 MHz suitable for ARDF