MDB Ventures Globe/Balloon Vacuum Tubes


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Don't see what you need? Contact us. We have many more tubes that are not yet listed. We also have new and good used tubes in most other numbers including preoctal, globe/balloon, octal, loctal/loktal, miniature, subminature, metal, power, transmitter tubes and many more.

MDB Ventures Globe/Balloon Tubes
Qty
Avail
Tube
Type
Price
Each
Tube
Brand
Emission
Strength
Mutual
Conduct

Desc

Notes
1 47 $40.00 Cunningham 85% 1550 / 2000Gm used (wb) globe tube - engraved base (pl)
1 280 $55.00 Silvertone 90% / 90% --- used (wb) globe tube - engraved base - bayonet pin on base
1 280 $55.00 Airline 90% / 100% --- used (wb) globe tube - engraved base - bayonet pin on base (white particles inside)
1 80 $50.00 OK 85% / 90% --- used (wb) globe tube - engraved base
1 80 $50.00 RCA 85% / 85% --- used (wb) globe tube - engraved base (particles inside)
1 UX-280 $45.00 Westinghouse 80% / 80% --- used (wb) globe tube (bayonet pin on base)
1 GX-280 $35.00 Airline 70% / 70% --- used (wb) globe tube - engraved base (white particles inside)
1 UX-281 $18.00 RCA Radiotron 75% --- used (wb) globe tube - engraved base (loose particle inside) bayonet pin on base
1 UX-281 $15.00 RCA Radiotron 60% --- used (wb) globe tube - engraved base bayonet pin on base - rattle in base (bayonet pin on base)
1 CX-281 $15.00 Cunningham 60% --- used (wb) globe tube - engraved base (loose particles inside) bayonet pin on base
1 81 $15.00 RCA / Cunningham 65% --- used (wb) globe tube - engraved base (bayonet pin on base)
1 UX-199 $75.00 RCA 110% 500 / 425Gm used (wb) GT (tubular) - engraved base - stepped base
1 UX-199 $45.00 RCA 70% 300 / 425Gm used (wb) GT (tubular) - engraved base - stepped base

Notes:
(OB) = original box, (rb) = relabeled/replacement box, (wb) = white box, (L) = loose (no box), (pl) = paper label on tube (original or third party), JAN = Military
(H) = tested on Hickok 539A
Emission Strength = Percentage of emission measured on Eico 666 tube tester
(Emission Strength = 100% baseline reference, >80%:good, >60%:fair >40%=diode good).
Gm = Mutual conductance measured on Hickok 533 tube tester; Except (H)=tested on Hickok 539A
(Gm = measured/baseline, measured1:measured2/baseline, measured1:measured2/baseline1:baseline2).


How To Order:

Purchasing our globe/balloon tubes is easy.
Just send us an email indicating the tubes (including quantities) you want.
We will let you know the total price including shipping and handling.

Shipping and Handling Information

Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com

Due to the highly volatile nature of the tube business, all Prices are subject to change without notice.


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Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com