UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Questions on 160/80 metre AM transmitters.

AdrianH · 11th Jan 2023, 8:36 pm

I wound an autotransformer for the mod stage taking as per the CODAR and it seems to work well, 80% mod is doable. The bandwidth is a bit wider then expected so I think some extra caps need to be added to bring any transmit bandwidth down a bit.

Update in the home mad section.

Adrian

11th Jan 2023, 8:36 pm	#135
AdrianH Octode Join Date: Mar 2020 Location: Blackburn with Darwen, Lancashire, UK. Posts: 1,573	Re: Questions on 160/80 metre AM transmitters. I wound an autotransformer for the mod stage taking as per the CODAR and it seems to work well, 80% mod is doable. The bandwidth is a bit wider then expected so I think some extra caps need to be added to bring any transmit bandwidth down a bit. Update in the home mad section. Adrian __________________ Asking questions and learning, or trying to! Youtube EF91Valve