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
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| 1 | UX-201-A | $15.00 | RCA Radiotron | 40% | 150 / 725Gm | used (wb) | globe tube - engraved base - bayonet pin |
| 1 | UX-201-A | $10.00 | RCA Radiotron | 20% | 100 / 725Gm | used (wb) | globe tube - engraved base - bayonet pin |
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| 1 | TS-222 | $30.00 | Tung-Sol | 100% | 600 / 500Gm | NOS (wb) | globe tube - engraved base (cat:402-155) - bayonet pin |
| 1 | UX-222 | $20.00 | RCA Radiotron | 100% | 500 / 500Gm | used (wb) | globe tube - engraved base - bayonet pin |
| 1 | X-222 | $15.00 | ?Armor | 110% | 550 / 500Gm | used (wb) | globe tube (cat:312-173) |
| 1 | X-222 | $15.00 | ?Armor | 140% | 650 / 500Gm | used (wb) | globe tube (cat:312-174) |
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| 1 | 232 | $30.00 | Silvertone | 140% | 950 / 640Gm | NOS (wb) | globe tube - engraved base - bayonet pin (cat:310-109) |
| 1 | NX-232 | $30.00 | National Union | 140% | 850 / 640Gm | NOS (wb) | globe tube - engraved base - bayonet pin on base (pl) |
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| 1 | NY-233 | $35.00 | National Union | 100% | 1400 / 1300Gm | NOS (wb) | globe tube - engraved base |
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| 1 | ER-551 | $20.00 | Raytheon Eveready | 80% | 850 / 1020Gm | used (wb) | globe tube - engraved base - four pillar tube (pl) |
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| 1 | 56 | $60.00 | RCA | 120% | 2100 / 1450Gm | NOS (wb) | globe tube - engraved base - black plate |
| 1 | 56 | $60.00 | RCA | 120% | 1600 / 1450Gm | NOS (wb) | globe tube - engraved base - black plate |
| 1 | 56 | $45.00 | Cunningham | 100% | 2100 / 1450Gm | used (wb) | globe tube - engraved base - black plate |
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| 1 | CX-371 | $100.00 | Cunningham | 120% | 1400 / 1200Gm | used (wb) | globe tube - engraved base - bayonet pin (pl) |
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| 1 | NU-84 | $50.00 | National Union | 110% / 110% | --- | used (wb) | globe tube - engraved base (pl) |
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| 1 | UX-874 | $15.00 | RCA | 138V fire | 100V run | used (wb) | globe tube (bayonet pin on base) |
| 1 | UX-874 | $20.00 | RCA | 138V fire | 95V run | used (wb) | globe tube (bayonet pin on base) |
| 1 | UX-874 | $20.00 | RCA | 113V fire | 90V run | used (wb) | globe tube - bayonet pin on base (cat:312-123) |
| 1 | 874 | $20.00 | RCA | 130V fire | 86V run | used (wb) | globe tube (bayonet pin on base) |
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| 1 | C-4-S | $15.00 | Columbia | untested | heater ok | used (wb) | globe tube - paint shield |
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| 1 | G-2-S | $15.00 | Majestic | untested | heater ok | used (wb) | globe tube - paint shield |
| 1 | G-2-S | $15.00 | Majestic | untested | heater ok | used (wb) | globe tube - engraved base - paint shield |
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| 1 | CRP-38266 | $25.00 | US Navy | heater ok | has output | used (wb) | globe tube - bayonet pin - similar to 866 but no mercury (less current) |
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| 1 | Ballast | $8.00 | unknown | good | two resistors | used (wb) | globe tube (ballast on pins 1 - 2 and 3 : base type 10) - loose base (possibly type 31 ballast - 1.2V 260ma) |
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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Return to
Preoctal and Globe/Balloon Vacuum Tube List
Don't forget to visit our
Discount Bargain Packs
and
Bargain Bin Tubes
for more savings!
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