The R3500D is an 80m ARDF receiver capable of covering from 3.5 to 3.6 MHz. It is a reasonable beginner’s receiver for learning ARDF, and affordable with prices starting at $30 for a kit, and $40 for a built and tested unit.

R3500D ARDF Receiver Kit is the upgraded version of the well known PJ-80 80m direction finding direct conversion receiver kit. The R3500D can also be used to locate the source of LOCAL interference in the 80 Meter band. Complete kit with PCB and all …

Oct 19, 2024 · Fortunately, it is not too difficult to find used or new equipment from Europe, Australia, or Japan, and many ARDF enthusiasts enjoy building their own gear from kits or published designs. Some specific examples of ARDF equipment, kits, and plans are listed below to help those interested in becoming involved in ARDF.

RF-2D is a super-heterodyne ARDF receiver with 3 element Yagi antenna.Its high sensitivity,fine directional pattern,smooth tuning and completed function make it the ideal equipment for exercise and competition in IARU and similar ARDF competitions.

Sep 1, 2021 · The PRX80S-kit by Dieter Schwider, DF7XU Attention, owners of a PRX80S or HRX80 According to DF7XU, designer of the PRX80S, the value of C12 should be changed from 10 nF to 100 nF.

R3500D ARDF Receiver Kit. Unit Price: 39 USD including tracked air shipping. Earbuds are removed from the kit as they are magnets.

We encourage you to read the manual through completely before starting to build the R3500D receiver (the “kit”). The kit comes packaged in its own case, as shown in Figure 1. The magnetic rod, the PC board, and . Figure 1. The packaged parts removed from their case.

Building 80m ARDF Receiver Kit. 80 Meter Amateur Radio Direction Finding Receiver covering 3500 KHz - 3600 kHz Designed by Chinese Radio Sport Association , all Leaded components with built-in ferrite Antenna and Whip sense Antenna. Controls: Tuning, Volume Control & Sense Antenna, On/Off switch is operated by plugging in earphones

Arducon is an Arduino-based ARDF transmitter controller for conducting Radio Direction-Finding practices and competitions. Available only in kit form. Kit includes: PCB fully populated with SMD components; All hand-solderable parts; Pre-programmed Arduino Pro Mini; More Information. Arducon will have a final board spin for the Kickstarter build.

Most of my ARDF kit is 'work in progress' so they usually look a physical mess. The handle is from my wife's hairdrier. The RSSI feeds into the microprocessor and is processed to generate an estimate of fox distance. Also included at the far end of the antenna is an electronic compass for provide extra functionality.