Apart from DC resistance tests, which read consistent on all ranges NO other tests have been carried out.
Attenuator ~ GPO Attenuator No. 45A ~ 75Ω ~ 0 - 70dB in 0.5dB steps
Cubilux 3.5mm TRS Line to Microphone Attenuator Cable, 3-Level Switchable (-10dB/-20dB/-30dB) Stereo Audio Adapter Cord Compatible with DSLR Camera, Camcorder, 1 Feet
Cubilux 3.5mm Line to Microphone Attenuator, 1/8-Inch Female Line Out to Male MIC in Attenuation Cable Compatible with DSLR Camera Camcorder Recorder Recording, 1 Feet
Corded Landline Home Telephone Dial BT Phone Machine GPO 746 Christmas Gift Idea
GPO 746 REPLICA 1970s CLASSIC BRIGHT RED PUSH BUTTON LANDLINE HOME TELEPHONE
VINTAGE GPO/BT PUSH BUTTON CORDED TELEPHONE IN GREY. TV / THEATRE PROPS
