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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, miniature, subminiature, metal, power, transmitter tubes and many more.
MDB Ventures Preoctal Tubes
Quantity
Available | Tube
Type | Price
Each | Tube
Brand | Emission
Strength | Mutual
Conductance |
Description |
Notes
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| 1 | 2X2/VT-119 | $2.00 | National Union | 110% | -- | ST - NOS (OB) | JAN - damaged box
| | 1 | 2X2/879/VT-119 | $2.50 | National Union | 110% | -- | ST - NOS (OB) | for Panoramic Radio
| | 1 | 2X2/879/VT-119 | $2.50 | National Union | 110% | -- | ST - NOS (OB) | for Triumph Mfg
| | 1 | 2X2/879/VT-119 | $2.50 | RCA | 140% | -- | ST - NOS (OB) | JAN for GE
| | 1 | 2X2/879 | $2.50 | Ken-Rad | 130% | -- | ST - NOS (OB) | JAN - cat:402-427
| | 1 | 2X2/879/VT119 | $2.50 | Ken-Rad | 130% | -- | ST - NOS (OB) | JAN - box flap missing
| | 1 | 2X2/VT-119 | $2.50 | RCA | 110% | -- | ST - NOS (OB) | US Army - oem box
| | 1 | 2X2/879 | $2.50 | RCA | 120% | -- | ST - NOS (OB) | US Navy
| | 1 | 2X2/879 | $2.50 | RCA | 120% | -- | ST - NOS (OB) | US Navy
| | 1 | 2X2/879/VT-119 | $2.50 | National Union | 115% | -- | ST - NOS (wb) | JAN
| | 1 | 2X2/879/VT-119 | $2.50 | National Union | 100% | -- | ST - NOS (wb) | JAN
| | 1 | 2X2A | $3.00 | Sylvania | 110% | -- | ST - NOS (OB) | damaged box
| | 1 | 2X2A | $3.00 | Raytheon | 120% | -- | ST - NOS (wb) | --
| | 1 | 2X2A | $3.00 | National Union | 100% | -- | ST - NOS (OB) | JAN - for Radio Receptor
| | 1 | 2X2A | $3.00 | RCA | 110% | -- | ST - NOS (OB) | JAN
| | 1 | 2X2A | $3.00 | RCA | 110% | -- | ST - NOS (OB) | JAN
| | 1 | 2X2A | $3.00 | RCA | 110% | -- | ST - NOS (OB) | JAN
| | 1 | 2X2A | $3.00 | RCA | 110% | -- | ST - NOS (OB) | JAN
| | 1 | 2X2A | $3.00 | RCA | 120% | -- | ST - NOS (OB) | JAN
| | 1 | 2X2A | $3.00 | RCA | 120% | -- | ST - NOS (OB) | JAN
| | 1 | 2X2A | $3.00 | RCA | 120% | -- | ST - NOS (OB) | JAN
| | 1 | 2X2A | $3.00 | RCA | 120% | -- | ST - NOS (OB) | cat:402-110
| | 1 | 2X2A | $3.00 | GE | 120% | -- | ST - NOS (OB) | cat:403-37
| | 1 | 2X2A | $3.00 | GE | 110% | -- | ST - NOS (OB) | cat:401-562
| | 1 | 2X2A | $3.00 | GE | 110% | -- | ST - NOS (OB) | --
| | 1 | 2X2A | $3.00 | GE | 130% | -- | ST - NOS (wb) | cat:403-317
| | 1 | 2X2A | $3.00 | Sylvania | 120% | -- | ST - NOS (OB) | --
| | 1 | 2X2A | $3.00 | Raytheon | 110% | -- | ST - NOS (wb) | --
| | 1 | 2X2A | $3.00 | National Union | 100% | -- | ST - NOS (wb) | --
| | 1 | 2X2A/VT119 | $3.00 | National Union | 100% | -- | ST - NOS (wb) | JAN
| | 1 | 2X2A/VT119 | $3.00 | National Union | 100% | -- | ST - NOS (wb) | JAN
| | 1 | 6A3 | $45.00 | National Union | 110% | 3500/3000Gm | ST - used (wb) | ---
| | 1 | 6A4/LA | $20.00 | Raytheon | 100% | 2150/2000Gm | ST - used (rb) | four pillar tube - engraved base
| | 1 | 6A4/LA | $20.00 | Raytheon | 100% | 2200/2000Gm | ST - used (wb) | four pillar tube - engraved base
| | 1 | 6A4/LA | $10.00 | Raytheon | 60% | 1500/2000Gm | ST - used (wb) | four pillar tube - engraved base
| | 1 | 6A4/LA | $12.00 | Philco | 130% | 2800/2000Gm | ST - NOS (OB) | sealed in box
| | 1 | 6A4/LA | $9.00 | Philco | 120% | 2650/2000Gm | ST - NOS (OB) | engraved base box - flap torn
| | 1 | 6A4/LA | $10.00 | Philco | 120% | 2800/2000Gm | ST - NOS (wb) | --
| | 1 | 6A4/LA | $11.00 | Tung-Sol | 120% | 2800/2000Gm | ST - NOS (OB) | sealed in box - damaged box
| | 1 | 6B5 | $18.00 | Zenith | 110%/120% | 1800/1300Gm | ST - NOS (OB) | loose glass particle inside bulb
| | 1 | 6B5 | $19.00 | National Union | 100%/110% | 1700/1300Gm | ST - NOS (OB) | --
| | 1 | 6B5 | $19.00 | GE | 100%/100% | 1500/1300Gm | ST - NOS (OB) | damaged box
| | 1 | 6B5 | $29.00 | Raytheon | 90%/100% | 1400/1300Gm | ST - used (wb) | four pillar tube - engraved base
| | 1 | 6B5 | $7.50 | Triad | 100%/110% | 1650/1300Gm | ST - used (L) | engraved base
| | 1 | 6B5 | $8.00 | National Union | 130%/90% | 1650/1300Gm | ST - sed (L) | --
| | 1 | 6B5 | $6.00 | Ken-Rad | 100%/70% | 1650/1300Gm | ST - used (L) | engraved base
| | 1 | 6B5 | $7.00 | GE | 90%/95% | 1600/1300Gm | ST - used (L) | --
| | 1 | 6B5 | $6.25 | Crosley by Ken-Rad | 90%/85% | 1500/1300Gm | ST - used (L) | engraved base
| | 1 | 6C7 | $12.00 | National Union | 120%: diodes 120%/120% | 1550/1250Gm | ST - NOS (wb) | metal shield
| | 1 | 6C7 | $12.00 | National Union | 120%: diodes 120%/120% | 1550/1250Gm | ST - NOS (OB) | metal shield
| | 1 | 6C7 | $8.00 | Majestic | 120%: diodes 110%/120% | 1450/1250Gm | ST - used (L) | engraved base - paint shield
| | 1 | 6C7 | $8.00 | Majestic | 130%: diodes 100%/120% | 1700/1250Gm | ST - used (rb) | engraved base - paint shield
| | 1 | 6E6 | $21.00 | National Union | 110%/110% | 1750:1750/1400Gm | ST - NOS (OB) | black ribbed plates - engraved base - torn box flap
| | 1 | 6E6 | $23.00 | GE | untested | heater ok | ST - NOS (OB) | sealed in box
| | 1 | 6E6 | $12.00 | Hytron | 110%/110% | 1600/1600Gm | ST - used (wb) | --
| | 1 | 6E6 | $12.00 | National Union | 100%/100% | 1500:1500/1400Gm | ST - used (OB) | box flap missing
| | 1 | 6E7 | $10.00 | National Union | 110% | -- | ST - NOS (OB) | metal shield - box flap missing
| | 1 | 6E7 | $5.00 | Majestic | 100% | -- | ST - used (rb) | engraved base - paint shield
| | 1 | 6E7 | $5.00 | Majestic | 100% | -- | ST - used (L) | engraved base - paint shield
| | 1 | 6E7 | $4.00 | unkown (National Union?) | 120% | 2100/1500Gm | ST - used (L) | shield missing
| | 1 | 6E7 | $4.00 | unkown (National Union?) | 120% | 1800/1500Gm | ST - used (L) | shield missing
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Notes:
(OB) = original box, (rb) = relabeled/replacement box, (wb) = white box,
(L) = loose (no box), (pl) = paper label on tube (original or third party)
(H) = tested on Hickok 539A
ST=ST Style, GT=GT Style, JAN = Military
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 preoctal 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.
Contact MDB Ventures sales@mdbventures.com
Due to the highly volatile nature of the tube business, all Prices are subject to change without notice.
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Preoctal and Globe/Balloon Vacuum Tube List
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