Ramsey DDF1

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Doppler direction finder testing

Testing a permanently mounted Ramsey DDF1 doppler direction finder in a boat canopy roof. Testing was in the driveway before ...

Ramsey doppler direction finder in operation

A permanently mounted Ramsey doppler direction finder using 4 half wave end fed shakespeare marine antennas.

Ramsey DDF1 Kit - Constructed and very first testing.

My Ramsey DDF1 Doppler Direction Finder kit. I built this kit and the main unit took a day to build, however it was worth taking my ...