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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
|
| 1 | 1F4 | $7.00 | National Union | 120% | 1700/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | National Union | 110% | 1600/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | GE | 110% | 1600/1400Gm | ST - NOS (OB) | sealed in box
| | 1 | 1F4 | $7.00 | GE | 110% | 1600/1400Gm | ST - NOS (OB) | sealed in box
| | 1 | 1F4 | $7.00 | GE | 110% | 1550/1400Gm | ST - NOS (OB) | sealed in box
| | 1 | 1F4 | $6.00 | GE | 105% | 1550/1400Gm | ST - NOS (OB) | sealed in box
| | 1 | 1F4 | $7.00 | Ken-Rad | 110% | 1600/1400Gm | ST - NOS (OB) | water damaged box
| | 1 | 1F4 | $7.00 | Tung-Sol | 110% | 1550/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | Tung-Sol | 115% | 1600/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | Philco | 110% | 1550/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | Hytron | 110% | 1500/1400Gm | ST - NOS (OB) | damaged box
| | 1 | 1F4 | $7.00 | National Union | 115% | 1600/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | National Union | 110% | 1600/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | National Union | 115% | 1600/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | National Union | 110% | 1600/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | GE | 110% | 1600/1400Gm | ST - NOS (OB) | damaged box
| | 1 | 1F4 | $7.00 | National Union | 115% | 1550/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | National Union | 110% | 1600/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $6.00 | Philco | 100% | 1500/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | National Union | 120% | 1600/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | National Union | 110% | 1550/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | National Union | 110% | 1650/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $7.00 | National Union | 110% | 1500/1400Gm | ST - NOS (OB) | --
| | 1 | 1F4 | $4.00 | Sylvania | 120% | 1750/1400Gm | ST - used (OB) | engraved base
| | 1 | 1F4 | $3.00 | RCA/Cunningham | 100% | 1650/1400Gm | ST - used (L) | engraved base
| | 1 | 1F4 | $4.00 | Sylvania | 130% | 1700/1400Gm | ST - used (L) | engraved base
| | 1 | 1F4 | $4.00 | GE | 110% | 1700/1400Gm | ST - used (L) | cat:312-30
| | 1 | 1V | $10.00 | Raytheon | 110% | -- | ST - used (L) | four pillar tube - engraved base
| | 1 | 1V | $4.00 | Ken-Rad | 115% | -- | ST - NOS (OB) | JAN - damaged box
| | 1 | 1V | $4.00 | Hytron | 110% | -- | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | National Union | -- | 110% | ST - NOS (OB) | JAN
| | 1 | 1V | $4.00 | National Union | -- | 110% | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | National Union | -- | 110% | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | National Union | -- | 110% | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | National Union | -- | 110% | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | National Union | -- | 110% | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | National Union | -- | 110% | ST - NOS (OB) | damaged box
| | 1 | 1V | $4.00 | National Union | -- | 110% | ST - NOS (OB) | damaged box
| | 1 | 1V | $4.00 | National Union | -- | 110% | ST - used (OB) | --
| | 1 | 1V | $4.00 | RCA | 110% | -- | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | Sylvania | 115% | -- | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | Sylvania | 120% | -- | ST - NOS (OB) | damaged box - cat:403-70
| | 1 | 1V | $4.00 | Sylvania | 120% | -- | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | RCA | 120% | -- | ST - NOS (OB) | missing box end flap
| | 1 | 1V | $4.00 | Philco | 110% | -- | ST - NOS (OB) | sealed in box
| | 1 | 1V | $4.00 | Philco | 120% | -- | ST - NOS (OB) | --
| | 1 | 1V | $4.00 | GE | 110% | -- | ST - NOS (OB) | --
| | 1 | 1V | $2.50 | Hytron | 115% | -- | ST - used (OB) | damaged box
| | 1 | 1V | $2.50 | RCA | 110% | -- | ST - used (OB) | damaged box
| | 1 | 1V | $2.50 | RCA/Cunningham | 100% | -- | ST - used (rb) | engraved base - in Arcturus box
| | 1 | 1V | $2.50 | RCA/Cunningham | 110% | -- | ST - used (L) | engraved base
| | 1 | 1V | $2.50 | RCA | 110% | -- | ST - used (L) | --
| | 1 | 1V | $2.50 | RCA | 110% | -- | ST - used (L) | cat:312-192
| | 1 | 1V | $2.50 | RCA | 100% | -- | ST - used (L) | --
| | 1 | 1V | $2.00 | RCA | 90% | -- | ST - used (L) | --
| | 1 | 1V | $2.00 | RCA | 100% | -- | ST - used (OB) | damaged box
| | 1 | 1V | $2.00 | Super Silvertone | 90% | -- | ST - used (L) | engraved base
| | 1 | 6Z3/1V | $4.00 | International | 120% | -- | ST - used (wb) | --
| | 1 | 2B4 | $5.00 | Unknown | Strikes at 55 | typical 72 | ST - used (wb) | --
| | 1 | 2B7 | $12.00 | Philco | 120%: diodes 110%/110% | 1200/1000Gm | ST - NOS (OB) | engraved base - sealed in box
| | 1 | 2B7 | $12.00 | Philco | 120%: diodes 110%/110% | 1250/1000Gm | ST - NOS (OB) | engraved base - sealed in box
| | 1 | 2B7 | $10.00 | Arcturus | untested | heater ok | ST - NOS (OB) | sealed in box
| | 1 | 2B7S | $5.00 | Unknown | 120%: diodes 110%/110% | 1050/1000Gm | ST - used (rb) | shield missing
| | 1 | 2B7S | $5.00 | Sylvania | 100%: diodes 100%/110% | 1000/1000Gm | ST - used (OB) | shield missing
| | 1 | 2Z2/G84 | $20.00 | Sylvania | 110% | --- | ST - NOS (OB) | sealed in box
| | 1 | 2Z2/G84 | $16.00 | Sylvania | 110% | --- | ST - used (OB) | engraved base damaged box
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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
Shipping and Handling Information
MDB Ventures Home
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