MDB Ventures Preoctal Radio 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 Preoctal Tubes
Qty
Avail
Tube
Type
Price
Each
Tube
Brand
Emission
Strength
Mutual
Conduct

Desc

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 $15.00 Philco 120%: diodes 110% / 110% 1200 / 1000Gm ST - NOS (OB) engraved base - sealed in box
1 2B7 $15.00 Philco 120%: diodes 110% / 110% 1250 / 1000Gm ST - NOS (OB) engraved base - sealed in box
1 2B7 $15.00 Arcturus untested heater ok ST - NOS (OB) sealed in box
1 2B7S $7.50 Unknown 120%: diodes 110% / 110% 1050 / 1000Gm ST - used (rb) shield missing
1 2B7S $7.50 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 $15.00 Sylvania 110% --- ST - used (OB) engraved base damaged box

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.

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