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 27 $10.00 Ken-Rad 120% 1250 / 1000Gm ST - used (rb) ribbed black plate
1 27 $10.00 Philco 120% 1200 / 1000Gm ST - used (rb) smooth black plate
1 27 $10.00 GE 100% 750 / 1000Gm ST - used (rb) ribbed black plate
1 27 $10.00 RCA / Cunningham 100% 750 / 1000Gm ST - used (rb) engraved base - smooth black plate
1 27 $10.00 National Union 120% 1250 / 1000Gm ST - used (rb) smooth black plate
1 27 $10.00 Philco 130% 1100 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Philco 130% 1100 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Philco 110% 1150 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Philco 110% 1250 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Philco 110% 850 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Philco 120% 1000 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Philco 100% 1200 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Philco 110% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Philco 140% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Philco 110% 1150 / 1000Gm ST - used (L) engraved base - smooth black plate cat:312-167
1 27 $10.00 Philco 140% 1050 / 1000Gm ST - used (L) engraved base - ribbed black plate
1 27 $10.00 Philco 115% 1250 / 1000Gm ST - used (L) engraved base - ribbed black plate
1 27 $10.00 Philco 115% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Philco 120% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Philco 120% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Philco 140% 1200 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Philco 140% 1150 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Philco 120% 1200 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Philco 110% 1250 / 1000Gm ST - used (L) engraved base - ribbed black plate
1 27 $10.00 National Union 100% 1000 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 110% 1050 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 110% 1050 / 1000Gm ST - used (L) smooth black plate - cat:312-181
1 27 $10.00 National Union 115% 1150 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 National Union 110% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 100% 950 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 100% 950 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 National Union 100% 1000 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 National Union 100% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 110% 900 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 110% 1100 / 1000Gm ST - used (L) smooth balck plate
1 27 $10.00 National Union 105% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 110% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 120% 1000 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 National Union 100% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 100% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 140% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 120% 900 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 100% 1050 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 115% 1150 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 National Union 100% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 100% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 130% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 110% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 130% 900 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 100% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 115% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 120% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 140% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 140% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 100% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 110% 1150 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 National Union 130% 1000 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 National Union 110% 1300 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 National Union 100% 700 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 National Union 100% 700 / 1000Gm ST - used (L) smooth black plate - rattle in base (pl)
1 27 $10.00 Cunningham 110% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 RCA / Cunningham 140% 1100 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 RCA / Cunningham 100% 1100 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 RCA / Cunningham 110% 1150 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 RCA / Cunningham 105% 1150 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 RCA / Cunningham 100% 1000 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 RCA 120% 1400 / 1000Gm ST - used(L) smooth black plate
1 27 $10.00 RCA 115% 1300 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 RCA 120% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 RCA Radiotron 110% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 RCA Radiotron 100% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 RCA Victor 140% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 100% 700 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 110% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 140% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 105% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 100% 1050 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 140% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 120% 1300 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 105% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 115% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 110% 1200 / 1000Gm ST - used (L) smooth black plate (pl)
1 27 $10.00 Sylvania 140% 1150 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Sylvania 140% 1200 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Sylvania 120% 1150 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Sylvania 130% 1300 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 110% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 120% 1200 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Sylvania 110% 1200 / 1000Gm ST - used (L) smooth black plate (pl)
1 27 $10.00 Sylvania 110% 1150 / 1000Gm ST - used (L) engraved base - smooth balck plate
1 27 $10.00 Sylvania 120% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 100% 1100 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Sylvania 140% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 115% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 100% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 105% 1200 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Sylvania 140% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 110% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 110% 1200 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Sylvania 120% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 140% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Sylvania 140% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Super Silvertone 110% 1200 / 1000Gm ST - used (L) smooth black plate (pl)
1 27 $10.00 Super Silvertone 105% 1000 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Super Silvertone 100% 1000 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Super Silvertone 110% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Super Silvertone 140% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Super Silvertone 100% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Super Silvertone 140% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Super Silvertone 110% 1150 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Super Silvertone 100% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Super Silvertone 120% 950 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 GE 110% 1050 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 GE 100% 1100 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 GE 150% 1400 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 GE 120% 1200 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Wards Super Airline 110% 1150 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Wards Super Airline 110% 1250 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Wards Super Airline 110% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Wards Super Airline 100% 1200 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Wards Super Airline 100% 1150 / 1000Gm ST - used (L) engraved base - ribbed black plate
1 27 $10.00 Wards Super Airline 120% 950 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Wards Super Airline 140% 1100 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Wards Super Airline 140% 1100 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Wards Airline 130% 1250 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Raytheon 140% 1150 / 1000Gm ST - used (L) engraved base - smooth black plate
1 27 $10.00 Raytheon 110% 1250 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Raytheon 100% 1200.1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Raytheon 140% 1250.1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Raytheon 120% 1400 / 1200Gm ST - used (L) smooth black plate
1 27 $10.00 Ken-Rad 115& 1300 / 1000Gm ST - used (L) engraved base - ribbed black plate
1 27 $10.00 Ken-Rad 110% 1200 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Ken-Rad 100% 1000 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Ken-Rad 100% 1000 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Ken-Rad 110% 1100 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Ken-Rad 120% 1000 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Ken-Rad 120% 1000 / 1000Gm ST - used (L) ribbed black plate
1 27 $10.00 Westinghouse 115% 1300 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Arcturus 140% 1400 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Arcturus 140% 1400 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 Zenith 140% 1200 / 1000Gm ST - used (L) smooth black plate
1 27 $10.00 unknown 120% 1250 / 1000Gm ST - used (L) smooth black plate

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