UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - 6-gang FM stereo tuner heads

Radio Wrangler · 22nd Mar 2022, 2:13 pm

One caution about basing what you're doing on dual gate MOSFETs.... Most semiconductor firms are stopping producing them, the quarterly obsoletion lists are whittling away at them. My last design using them is still shipping (aircraft VHF Comms radio) but it has to all be from life-bought stock.

Anything you do with them is therefore to be considered time-limited. This isn't important from the point of view of studying the technology, but you should be aware that it is a dead end.

That said, the best general range of MMIC amplifiers got canned a few years ago.

David

22nd Mar 2022, 2:13 pm	#6
Radio Wrangler Moderator Join Date: Mar 2012 Location: Fife, Scotland, UK. Posts: 22,866	Re: 6-gang FM stereo tuner heads One caution about basing what you're doing on dual gate MOSFETs.... Most semiconductor firms are stopping producing them, the quarterly obsoletion lists are whittling away at them. My last design using them is still shipping (aircraft VHF Comms radio) but it has to all be from life-bought stock. Anything you do with them is therefore to be considered time-limited. This isn't important from the point of view of studying the technology, but you should be aware that it is a dead end. That said, the best general range of MMIC amplifiers got canned a few years ago. David __________________ Can't afford the volcanic island yet, but the plans for my monorail and the goons' uniforms are done