UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Marconi 2022C

Radio Wrangler · 7th Nov 2013, 7:50 pm

BFR540 abut 43p at Farnell in singles 500mW and 9GHz

You might want to add a bit of base spoiling resistance just to have a component to cal it if it feels a bit too frisky, but this will still have hfe around 9 at 1000MHz given the age of the hybrid, I'd think something like a BFR93A die might be in the original. But we don't want something like the original because they keep dying.

David

7th Nov 2013, 7:50 pm	#12
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,876	Re: Marconi 2022C - Stopped working below 62.5 MHz BFR540 abut 43p at Farnell in singles 500mW and 9GHz You might want to add a bit of base spoiling resistance just to have a component to cal it if it feels a bit too frisky, but this will still have hfe around 9 at 1000MHz given the age of the hybrid, I'd think something like a BFR93A die might be in the original. But we don't want something like the original because they keep dying. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done