Indoors or Outdoors? 

There were two later versions of the wideband active antenna.

AD270 was the indoor version.

AD370 was designed for outdoor use.

Many thanks to Dominique Kremp for this one.

• Download AD270 AD370 instructions PDF (1.6mb).

David G8SZX supplied me with details of the IB5 interface board and close- up pictures of the PCBs.

• Download AD370 IB5 circuit and PCB details PDF (1mb).