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ReinoutdV 7th September 2005 04:07 PM

Eimac 35TG
 
2 Attachment(s)
Hi all,

for an upcoming project i found a couple of funny Eimac-tubes. Eimac is known for its quality stuff....so i would like to give it a try.

It's the 35TG (the same characterisitcs as the 35T but with the grid-connection popping out on the side).

I already "collected" some of these beautifully made tubes and i discovered that there were diferences:
- zirconium getter not on all tubes;
- different stamps;

Maybe you can help me out finding the correct ages of these tubes and even have more of these goodies to buy/swap/whatever. Any information on them is great.

Amplifier-wise: i'm going to make a ultra-parafeed 35TG with a 6HV5 as driver. This two-stage amp on 800 ~1000 Volt should be smaller than my current 833-beasts. My wife banished these from the living room.....but allowed my tube-hobby there.....when smaller. The smaller should be no problem; currently it's 280 kg and 4-chassis for the power-amplifier....so there is a broad margin to work within.

Suggestions for a nice amplifier ? Do you have experience with this tube ? It simply looks stunning; characteristic-wise it's a A2-tube....ideas ?

Looking forward to your replies. I'll submit a couple of posts with the current three different models i have.

Regards,
Reinout

ReinoutdV 7th September 2005 04:11 PM

Eimac 35TG "type 1"
 
2 Attachment(s)
Here's the first type Eimac 35 TG

The stamping is with flowing letters. Only: Eimac 35 TG Made in U.S.A.
The innards of the tube is only pure tantalum (no getter)
No stamping on the base

ReinoutdV 7th September 2005 04:14 PM

Eimac 35TG "type 2"
 
2 Attachment(s)
Here's the second type Eimac 35 TG

The stamping on the glass:
Eimac
Reg. u.S. Pet. Off.
35-TG
Made in U.S.A.

The stamping on the base:
JAN-35TG
made in u.s.a.

Pure tantalum innards; no getter

ReinoutdV 7th September 2005 04:18 PM

Eimac 35TG "type 3"
 
2 Attachment(s)
And currently the last type 35 TG....hopefully not the last.......

Glass stamping:
Eimac (in nice lettering)
(JAN-35TG)
3-50D4

On the base
Eimac
Eitel-McCullough. Inc.
San Bruno Calif. U.S.A.
Reg. U.S. Pat. Off.

And now new:
NO cooling fins on the anode/plate
The plate/anode seems to be covered in light gre-ish getter (which seems to be zirconium which was used often for that purpose)

Ideas ?

ReinoutdV 7th September 2005 04:20 PM

Eimac 35TG "type 1" BOX
 
2 Attachment(s)
Maybe the box with tyoe 1 will help ?

Small box, no stamps

ReinoutdV 7th September 2005 04:22 PM

Eimac 35TG "type 2" BOX
 
2 Attachment(s)
As for the type 2 35TG box:

larger box, patent numbers on the label.

There is a faintly readable stamp on the box:


Order No: 15359...unreadable
Acceptance date 2-29-45

ReinoutdV 7th September 2005 04:24 PM

Eimac 35TG "type 3" BOX
 
2 Attachment(s)
last box for the type 3 35TG

Huge box...fat great than the others. And not in plain carton-colour....but yellow/red !


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