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GeoffK · 23rd Aug 2019, 3:24 pm

The red arrows show the 4 poles of each three way switch bank.

With switch in position S1 this is for MW section.
(Bank 1 aerial pole) S1 switched to L1 (MW frame aerial) inner, S4 (bank 2 pole from C4 aerial tuner & C5) to other (outer) side L1 top & trimmer C1.

S7 (bank 3) (from C8 & C9 osc tuner) to S7 (L9 osc pri) S10 (bank 4) (L12 osc sec & second grid (osc anode) V1

Repeat for other two switch positions.

Black would be going to common of trimmers C1 C2 C3 and C13 C14 C15 (C12) in osc section.

23rd Aug 2019, 3:24 pm	#2
GeoffK Heptode Join Date: Mar 2016 Location: Essex, UK. Posts: 602	Re: Roberts RMB Wavechange The red arrows show the 4 poles of each three way switch bank. With switch in position S1 this is for MW section. (Bank 1 aerial pole) S1 switched to L1 (MW frame aerial) inner, S4 (bank 2 pole from C4 aerial tuner & C5) to other (outer) side L1 top & trimmer C1. S7 (bank 3) (from C8 & C9 osc tuner) to S7 (L9 osc pri) S10 (bank 4) (L12 osc sec & second grid (osc anode) V1 Repeat for other two switch positions. Black would be going to common of trimmers C1 C2 C3 and C13 C14 C15 (C12) in osc section. Attached Thumbnails __________________ *Geoff* Last edited by GeoffK; 23rd Aug 2019 at 3:32 pm.