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 15 $30.00 Silvertone 120% 700 / 700Gm ST - NOS (OB) engraved base
1 15 $15.00 Philco 110% 1000 / 700Gm ST - used (L) engraved base
1 15 $12.00 Silvertone 90% 600 / 700Gm ST - used (ob) engraved base - missing box flap
1 19 $15.00 Lafayette 130% / 130% 1250: 1250 / 1000Gm ST - NOS (wb) smooth plates - engraved base
1 19 $15.00 Wards Super Airline 140% / 140% 1450: 1450 / 1000Gm ST - NOS (wb) smooth plates
1 19 $15.00 Sylvania 150% / 150% 1150: 1200 / 1000Gm ST - NOS (wb) ribbed plates
1 19 $15.00 Sylvania 130% / 140% 1200: 1300 / 1000Gm ST - NOS (OB) ribbed plates
1 19 $15.00 Sylvania 130% / 140% 1200: 1300 / 1000Gm ST - NOS (OB) ribbed plates
1 19 $15.00 Sylvania 140% / 140% 1300: 1300 / 1000Gm ST - NOS (wb) ribbed plates
1 19 $15.00 Super Silvertone 120% / 125% 1200: 1200 / 1000Gm ST - NOS (wb) smooth plates - engraved base
1 19 $15.00 RCA Radiotron 130% / 130% 1300: 1300 / 1000Gm ST - NOS (wb) smooth plates - engraved base
1 19 $15.00 RCA / Cunningham 125% / 140% 1150: 1350 / 1000Gm ST - NOS (wb) smooth plates - engraved base
1 19 $15.00 RCA / Cunningham 140% / 140% 1200: 1250 / 1000Gm ST - NOS (wb) smooth plates - engraved base
1 19 $15.00 Tung-Sol 120% / 120% 1100: 1100 / 1000Gm ST - NOS (ob) smooth plates - damaged box
1 19 $7.50 Sylvania 100% / 120% 1050: 1200 / 1000Gm ST - used (rb) ribbed plates
1 19 $7.00 unknown 120% / 130% 1150: 1250 / 1000Gm ST - used (rb) smooth plates - damaged box - name removed from base
1 19-GT $12.00 Sylvania 120% / 130% 1300: 1450 / 1000Gm GT - NOS (wb) cat:402-278
1 19-GT $12.00 RCA Victor 120% / 120% 1200: 1200 / 1000Gm GT - NOS (wb) ---
1 19 $7.50 Wards Super Airline 130% / 140% 1200: 1250 / Gm ST - used (L) smooth plates
1 19 $7.50 Lafayette 125% / 140% 1250 / 1400Gm ST - used (L) smooth plates - engraved base
1 19 $7.50 unknown 130% / 130% 1050: 1150 / 1000Gm ST - used (L) smooth plates - name removed from base
1 19 $7.50 unknown 110% / 130% 1100: 1300 / 1000Gm ST - used (L) smooth plates - name removed from base
1 19 $7.50 unknown 140% / 140% 1200: 1250 / 1000Gm ST - used (L) smooth plates - name removed from base
1 19 $7.50 unknown 110% / 115% 1050: 1100 / 1000Gm ST - used (L) smooth plates - name removed from base
1 19 $7.50 Wards Super Airline 140% / 140% 1250: 1250 / 1000Gm ST - used (L) smooth plates - engraved base
1 19 $7.50 Wards Super Airline 140% / 160% 800: 1050 / 1000Gm ST - used (L) smooth plates - engraved base
1 19 $7.50 Super Silvertone 115% / 120% 1000: 1100 / 1000Gm ST - used (L) ribbed plates - engraved base
1 19 $7.50 Wards Super Airline 110% / 110% 1050: 1000 / 1000Gm ST - used (L) smooth plates
1 19 $7.50 Sylvania 120% / 140% 1100: 1200 / 1000Gm ST - used (L) ribbed plates - engraved base
1 19 $7.50 Wards Super Airline 125% / 135% 1200: 1300 / 1000Gm ST - used (L) smooth plates - engraved base
1 19 $7.50 RCA / Cunningham 100% / 110% 950: 1050 / 1000Gm ST - used (L) smooth plates - engraved base
1 19 $7.50 Raytheon 125% / 130% 1200: 1250 / 1000Gm ST - used (L) ribbed plates
1 22 $10.00 RCA / Cunningham 110% 650 / 500Gm ST - NOS (ob) engraved base - box deteriorating
1 22 $10.00 Philco 115% 650 / 500Gm ST - NOS (ob) engraved base - bayonet pin on base - damaged box
1 22 $10.00 Philco 120% 600 / 500Gm ST - NOS (ob) engraved base - bayonet pin on base - damaged box - cat:403-76
1 22 $10.00 National Union 140% 600 / 500Gm ST - NOS (wb) engraved base - bayonet pin on base
1 22 $7.50 Sylvania 100% 550 / 500Gm ST - used (wb) engraved base - bayonet pin on base
1 22 $7.50 RCA / Cunningham 130% 600 / 500Gm ST - used (L) engraved base
1 22 $5.00 RCA / Cunningham 85% 450 / 500Gm ST - used (L) engraved base
1 26 $25.00 National Union 110% 1250 / 1150Gm ST - NOS (ob) damaged box
1 26 $25.00 National Union 110% 1200 / 1150Gm ST - NOS (wb) ---
1 26 $25.00 Sparton 120% 1300 / 1150Gm ST - NOS (wb) ---
1 26 $25.00 Sparton 100% 1150 / 1150Gm ST - NOS (wb) ---
1 26 $25.00 GE 120% 1300 / 1150Gm ST - NOS (wb) ---
1 26 $25.00 RCA / Cunningham 100% 1150 / 1150Gm ST - NOS (wb) engraved base
1 26 $25.00 Sylvania 130% 1250 / 1150Gm ST - NOS (wb) engraved base
1 26 $25.00 Sylvania 115% 1300 / 1150Gm ST - NOS (wb) ---
1 26 $25.00 Tung-Sol 120% 1500 / 1150Gm ST - NOS (wb) ---
1 26 $25.00 Tung-Sol 120% 1500 / 1150Gm ST - NOS (wb) engraved base
1 26 $15.00 Sylvania 120% 1200 / 1150Gm ST - used (rb) engraved base
1 26 $15.00 National Union 140% 1400 / 1150Gm ST - used (rb) damaged box
1 26 $15.00 GE 100% 1100 / 1150Gm ST - used (L) ---
1 26 $15.00 Coronado 100% 1350 / 1150Gm ST - used (L) ---
1 26 $15.00 Super Silvertone 100% 1150 / 1150Gm ST - used (L) ---
1 26 $15.00 National Union 120% 1250 / 1150Gm ST - used (L) ---
1 26 $15.00 RCA Victor 110% 1200 / 1150Gm ST - used (L) ---
1 26 $15.00 RCA / Cunningham 100% 1050 / 1150Gm ST - used (L) engraved base
1 26 $15.00 Arcturus 140% 1500 / 1150Gm ST - used (L) engraved base
1 26 $15.00 Tung-Sol 110% 1150 / 1150Gm ST - used (L) engraved base
1 26 $15.00 Philco 140% 1350 / 1150Gm ST - used (L) ---
1 26 $15.00 Philco 100% 1250 / 1150Gm ST - used (L) engraved base
1 26 $15.00 Wards Super Airline 100% 1200 / 1150Gm ST - used (L) ---
1 26 $15.00 National Union 120% 1200 / 1150Gm ST - used (L) engraved base
1 NU-26 $15.00 National Union 100% 1650 / 1150Gm ST - used (L) engraved base
1 26 $12.00 Raytheon 95% 1100 / 1150Gm ST - used (wb) bayonet pin on base
1 26 $12.00 Philco 90% 1150 / 1150Gm ST - used (L) ---
1 26 $12.00 Sylvania 90% 1000 / 1150Gm ST - used (L) ---
1 26 $12.00 Tung-Sol 95% 1000 / 1150Gm ST - used (L) ---
1 26 $12.00 Triad 85% 850 / 1150Gm ST - used (L) engraved base
1 26 $12.00 Sylvania 85% 1050 / 1150Gm ST - used (L) ---
1 26 $12.00 National Union 85% 1150 / 1150Gm ST - used (L) engraved base
1 26 $12.00 National Union 85% 1100 / 1150Gm ST - used (L) engraved base
1 26 $12.00 Philco 85% 1050 / 1150Gm ST - used (L) engraved base
1 26 $12.00 RCA Victor 90% 1050 / 1150Gm ST - used (L) ---
1 26 $12.00 RCA / Cunningham 95% 1050 / 1150Gm ST - used (L) engraved base
1 26 $12.00 Philco 90% 1150 / 1150Gm ST - used (L) engraved base
1 26 $12.00 National Union 85% 800 / 1150Gm ST - used (L) ---
1 26 $12.00 RCA Victor 90% 1000 / 1150Gm ST - used (L) ---

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