Eimac 35TG
 

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

Eimac 35TG "type 1"
 

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

Eimac 35TG "type 2"
 

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

Eimac 35TG "type 3"
 

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 ?

Eimac 35TG "type 1" BOX
 

Maybe the box with tyoe 1 will help ?

Small box, no stamps

Eimac 35TG "type 2" BOX
 

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

Eimac 35TG "type 3" BOX
 

last box for the type 3 35TG

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