Some "New" Old Stuff...

[KC4VWU]

I picked this RF deck up earlier this year, I believe at Richmond. Had though of stripping it for parts, but it's not that bad; someone did a pretty decent job of it. What tube do you suppose it ran? Looks like a medium 4 pin bayonet socket and the tube had a grid pin on the side. My guess is it was either a 75 or 100 TH/TL, but I'm not that familiar with a lot of the older triodes. Panel meters full scale are Vp=1.5 KV, Ip=300mA.

Phil     

[KC2ZFA]

I would love to see a pic under the chassis...is there a turret under there ?

peter

[KC4VWU]

Yes, it's a B&W turret, just barely visible in the upper RH corner...

[KC2ZFA]

very nice, thanks. Looks like it has a balanced grid-tank (dual cap, and
center-linked coils). Plug and play !

[W7TFO]

If the grid connection is with a connector, you may be right about the Eimac tube.

If it is on the socket, it was most likely a T-40, T-55, VF70D, or 830B.

Could also be an 812 or 811, but those would be light in the mA department.

73DG

[KC4VWU]

Thanks for the replies. Here's one last pic in which you can see the grid clip. Now, the rub is I don't have anything for a direct fit. Have a few 304TL's, but that would mean a little reconfiguring. Thought about 812's but same scenario there as well. My pocket just isn't deep enough right now for the correct one to do plug and play. Thanks Audiophools! I hope those RF tubes gives you great clarity in your highs and tightness in your bottom end!

Just kidding!

Phil

[W7TFO]

Without mods that limits your choices to a 100TH or TL, or the Amperex/United HF100.

73DG