For completeness this is not the only DIY tape measure Yagi on Instructables so also check out [FN64’s] 2 m band “Radio Direction Finding Antenna for VHF” and [manuka’s] 70 cm band “433 ...

British radio direction finding truck from 1927; public domain Of course, there is one problem. You can’t actually tell which side of the antenna is pointing to the signal with a loop or a dipole.

R&D Magazine recognized the AF-369 VHF/UHF Terrestrial Direction-Finding Antenna technology as one of the 100 most significant innovations of 2019.

Link Microtek has developed an automatic direction-finding (DF) antenna that allows the source of unauthorised or interfering transmissions to be located rapidly and accurately, even in urban areas ...

Now available from Link Microtek is a new automatic direction-finding (DF) antenna that allows the source of unauthorised or interfering transmissions to be located rapidly and accurately, even in ...

MDA’s Information Systems group announced today that it has delivered another Direction Finding (DF) Antenna System to Ultra Electronics TCS, a provider of integrated SIGnal INTelligence (SIGINT ...

For his part, Dr. Wilmotte went on to patent an anti-fading two-section vertical AM antenna. He also helped create direction-finding systems for airports, was involved with the development of radar, ...

The Pentagon wants more accurate high-frequency direction-finding antenna for small aircraft. Credit: U.S. Army The Defense Innovation Unit is looking to find a prototype small high-frequency ...

Wolfhound™-PRO's high speed scanning receiver utilizes a multi-band DF (Direction Finding) antenna system allowing security personnel to locate nearby cell phones in either standby mode or ...

Now available from Link Microtek is a new automatic direction-finding (DF) antenna that allows the source of unauthorised or interfering transmissions to be located rapidly and accurately, even in ...