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 CX-300-A $45.00 Cunningham 120% 850 / 666Gm used (wb) globe tube - engraved base - rattle in base
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
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)
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)
1 NY-233 $35.00 National Union 100% 1400 / 1300Gm NOS (wb) globe tube - engraved base
1 ER-551 $20.00 Raytheon Eveready 80% 850 / 1020Gm used (wb) globe tube - engraved base - four pillar tube (pl)
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
1 CX-371 $100.00 Cunningham 120% 1400 / 1200Gm used (wb) globe tube - engraved base - bayonet pin (pl)
1 NU-84 $50.00 National Union 110% / 110% --- used (wb) globe tube - engraved base (pl)
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)
1 C-4-S $15.00 Columbia untested heater ok used (wb) globe tube - paint shield
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
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)
1 BH $10.00 Eveready Raytheon 120% / 120% 1Mohm / 2Mohm leakage used (wb) globe tube - bayonet pin - engraved base
1 BH $10.00 Eveready Raytheon 100% / 100% 5Mohm / 2Mohm leakage used (wb) globe tube - bayonet pin - engraved base
1 BH $10.00 Eveready Raytheon 110% / 110% 1Mohm / 2Mohm leakage used (rb) globe tube - bayonet pin - engraved base
1 BH $10.00 Raytheon 110% / 110% 750Kohm / 1Mohm leakage used (wb) tipped globe tube - bayonet pin - engraved base - cracked base - loose glass inside
1 85 Mill Rectifier $25.00 QRS Redtop 120% / 120% 2Mohm / 2Mohm leakage used (wb) globe tube - bayonet pin - engraved base - loose glass inside
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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Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com