Radio Direction Finder: Doppler Direction Finder OAR DF4003A Used

Radio Direction Finder – Doppler Direction Finding, OAR DF4003A

Condition:

This OAR (Ocean Applied Research) model DF4003A Radio Direction Finder is in good physical condition considering its age. Due to missing components like the antenna and cables, we could not test it. It is being sold for parts or repair, though it appears to have been well-preserved and may be operational.

Here’s what we know about it:

• It looks to have been stored properly and shows no obvious signs of damage.
• Unable to test without necessary accessories.
• Likely functional, but this cannot be confirmed due to its untested condition.

OAR radio direction finders gained widespread popularity across various sectors, including the maritime industry and law enforcement agencies worldwide. These advanced devices were extensively utilized by the FBI and police to effectively track the movements of suspected criminals and by radio monitoring services to uncover hidden transmitters.