CARA VHF Group Radio Direction Finding (Foxhunt) presentations on Jan 12, 2022
Channel: Calgary Amateur Radio Association
Date: 2022-01-19

Presentations by 7 people on their various Radio Direction Finding antennas and gadgets used for Fox Hunting and Search and Rescue techniques.  
There are explanations of why they chose them and demos of most of them in use. 
More details can be found at http://caraham.org/resources

Presentations:
0:00  - Introduction
0:10 - 4Mhz Offset Attenuator (VE6PDS)
2:13 - TDOA (Time Difference of Arrival) detector using a 555 Timer 
7:35 - TDOA with another circuit and discussion and theory  (VA6DJH)
11:18 - TDOA Passive Antenna (VA6JWL)
22:38 - Loop Antenna (VE6NRO)
33:01 - Various Fox Hunting antennas used by Edmonton clubs (VE6WGN)  
35:06 - Fox Hunting case for holding Radio and Step Attenuator (VE6FVD)