30-08-2018, 07:45 PM
(This post was last modified: 30-08-2018, 07:46 PM by Murphyv310.)
Hi.
Just a quick update. I've run a thin cable around the roof space of the shed all the way round. I've removed the PA stage and made a 10:1 RF transformer with a toroid with the primary connected to the dual valve anode to 9v HT. This gives excellent signal to all the sets in the shed. This works by far the best for me. The ends of the cable are connected to the secondary of the toroid and are not connected to any other point on the circuit, this has removed all traces of modulation hum.
Just a quick update. I've run a thin cable around the roof space of the shed all the way round. I've removed the PA stage and made a 10:1 RF transformer with a toroid with the primary connected to the dual valve anode to 9v HT. This gives excellent signal to all the sets in the shed. This works by far the best for me. The ends of the cable are connected to the secondary of the toroid and are not connected to any other point on the circuit, this has removed all traces of modulation hum.
