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 24 $15.00 Tung-Sol 140% 1200 / 1000Gm ST - NOS (wb) ---
1 24 $15.00 Tung-Sol 130% 1250 / 1000Gm ST - NOS (wb) engraved base
1 24 $15.00 Tung-Sol 135% 1250 / 1000Gm ST - NOS (wb) engraved base
1 24 $10.00 Arcturus 125% 1200 / 1000Gm ST - NOS (wb) engraved base
1 NU-24A $15.00 National Union 120% 1200 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 GE 110% 1300 / 1000Gm ST - NOS (ob) damaged box
1 24A $10.00 RCA 130% 1200 / 1000Gm ST - NOS (ob) cat:402-5
1 24A $10.00 National Union 110% 1150 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 National Union 120% 1150 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 National Union 130% 1350 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 Sylvania 150% 1350 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Sylvania 120% 1200 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Sylvania 110% 1150 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Sylvania 120% 1200 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Sylvania 130% 1200 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Sylvania 120% 1150 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Sylvania 140% 1450 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Sylvania 115% 1200 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Sylvania 130% 1200 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 RCA / Cunningham 130% 1250 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 130% 1200 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 130% 1250 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 130% 1250 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 130% 1200 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 120% 1200 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 140% 1300 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 135% 1350 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 140% 1350 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 150% 1400 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 RCA / Cunningham 150% 1350 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 Tung-Sol 135% 1200 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Raytheon 140% 1250 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Wizard 120% 1200 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 Wards Super Airline 120% 1150 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Philco 110% 1150 / 1000Gm ST - NOS (wb) engraved base
1 24A $10.00 Super Silvertone 125% 1250 / 1000Gm ST - NOS (wb) engraved base (pl)
1 24A $10.00 National Union 140% 1400 / 1000Gm ST - NOS (ob) engraved base
1 24A $10.00 RCA 110% 1100 / 1000Gm ST - NOS (OB) ---
1 24A $10.00 Sylvania 110% 1150 / 1000Gm ST - NOS (OB) ---
1 24A $10.00 Philco 120% 1200 / 1000Gm ST - NOS (OB) engraved base - box flap missing
1 24A $10.00 Super Silvertone 120% 1200 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 RCA 140% 12500 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Wards Super Airline 110% 1100 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 GE 130% 1100 / 1000Gm ST - NOS (wb) cat:312-384
1 24A $10.00 Philco 120% 1200 / 1000Gm ST - NOS (OB) ---
1 24A $10.00 Wards Super Airline --- 1100 / 1000Gm ST - NOS (ob) damaged box
1 24A $10.00 National Union 120% 1100 / 1000Gm ST - NOS (ob) cat:312-67
1 24A $10.00 Sylvania 100% 1250 / 1000Gm ST - NOS (ob) damaged box
1 24A $10.00 Raytheon 130% 1200 / 1000Gm ST - NOS (ob) engraved base - damaged box
1 24A $10.00 RCA 150% 1250 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 National Union 150% 1600 / 1000Gm ST - NOS (OB) engraved base - missing box flap
1 24A $10.00 RCA 120% 1200 / 1000Gm ST - NOS (OB) ---
1 24A $10.00 RCA 120% 1150 / 1000Gm ST - NOS (wb) ---
1 24A $10.00 Concord 150% 1300 / 1000Gm ST - NOS (ob) damaged box
1 24A $10.00 RCA 110% 1200 / 1000Gm ST - NOS (OB) sealed in box
1 24A $10.00 RCA 110% 1200 / 1000Gm ST - NOS (OB) sealed in box
1 24A $10.00 Ken-Rad untested heater ok ST - NOS (OB) sealed in box
1 24A $10.00 Ken-Rad untested heater ok ST - NOS (OB) sealed in box
1 24A $10.00 Raytheon 110% 1250 / 1000Gm ST - NOS (OB) sealed in box
1 24A $10.00 Raytheon 100% 1200 / 1000Gm ST - NOS (OB) sealed in box
1 24 $7.50 Tung-Sol 130% 1250 / 1000Gm ST - used (ob) engraved base - damaged box
1 24 $7.50 Tung-Sol 140% 1250 / 1000Gm ST - used (rb) engraved base
1 24 $7.50 Tung-Sol 130% 1400 / 1000Gm ST - used (rb) engraved base
1 24 $7.50 Tung-Sol 125% 1350 / 1000Gm ST - used (ob) engraved base - damaged box
1 24A $5.00 Sylvania 110% 1100 / 1000Gm ST - used (rb) engraved base - damaged box
1 24A $5.00 National Union 110% 1150 / 1000Gm ST - used (ob) damaged box
1 24A $5.00 Sylvania 110% 1050 / 1000Gm ST - used (rb) damaged box
1 24A $5.00 Philco 100% 1000 / 1000Gm ST - used (rb) engraved base
1 24A $5.00 Sylvania 140% 1150 / 1000Gm ST - used (rb) ---
1 24A $5.00 Sylvania 125% 1200 / 1000Gm ST - used (ob) engraved base - damaged box
1 24A $5.00 Sylvania 120% 1100 / 1000Gm ST - used (ob) damaged box
1 24A $5.00 Philco 110% 1400 / 1000Gm ST - used (ob) damaged box
1 24A $5.00 National Union 140% 1400 / 1000Gm ST - used (ob) engraved base - damaged box
1 24A $5.00 Sylvania 130% 1100 / 1000Gm ST - used (ob) damaged box
1 24A $5.00 RCA 140% 1350 / 1000Gm ST - used (wb) ---
1 24A $5.00 National Union 125% 1250 / 1000Gm ST - used (wb) engraved base
1 24A $5.00 Sylvania 120% 1150 / 1000Gm ST - used (rb) cat:32-211

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