UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - How much should one invest in tools to get in the hobby/occasional business?

Oldcodger · 13th May 2021, 12:40 am

Old style(AKA valve) radios. I'd suggest a bit of technical education, then some diagrams (with preferable voltages on). I learnt many years ago (at the old school we old GPO/PO(T)) blokes called Stone that to check a stage you need to verify that the cathode voltage) tells you a lot. DC OK- then it's possibly either low gain (excess NFB, caused by capacitance in the NFB circuit or another source (cathode decoupler gone ?).

13th May 2021, 12:40 am	#53
Oldcodger Nonode Join Date: Oct 2014 Location: West Midlands, UK. Posts: 2,181	Re: How much should one invest in tools to get in the hobby/occasional business? Old style(AKA valve) radios. I'd suggest a bit of technical education, then some diagrams (with preferable voltages on). I learnt many years ago (at the old school we old GPO/PO(T)) blokes called Stone that to check a stage you need to verify that the cathode voltage) tells you a lot. DC OK- then it's possibly either low gain (excess NFB, caused by capacitance in the NFB circuit or another source (cathode decoupler gone ?).