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 182B / 482 $50.00 Sylvania 110% 2000 / 1500Gm ST - used (wb) engraved base
1 182B / 482 $40.00 Sparton 90% 1600 / 1500Gm ST - used (wb) engraved base
1 182B / 482 $40.00 Raytheon 90% 1500 / 1500Gm ST - used (wb) ---
1 182B / 482 $35.00 Sylvania 85% 1700 / 1500Gm ST - used (wb) engraved base
1 485 $20.00 Ken-Rad untested heater ok ST - NOS (OB) sealed in box
1 485 $20.00 Tung-Sol 110% 1650 / 1300Gm ST - NOS (wb) engraved base
1 485 $20.00 Sylvania 120% 1800 / 1300Gm ST - NOS (OB) missing box flap
1 485 $10.00 Ken-Rad 105% 1650 / 1300Gm ST - used (L) ---
1 843 / VT-73 $50.00 RCA 140% 1800 / 1625Gm ST - NOS (wb) US Navy
1 843 $40.00 RCA 100% 1650 / 1625Gm ST - NOS (wb) US Navy
1 843 $40.00 RCA 100% 1700 / 1625Gm ST - NOS (wb) US Army
1 843 $40.00 RCA 100% 1700 / 1625Gm ST - NOS (wb) JAN
1 843 $40.00 RCA 110% 1700 / 1625Gm ST - NOS (wb) ---
1 843 $25.00 RCA 90% 1550 / 1625Gm ST - used (wb) US Navy (cat:p19)
1 843 / VT-73 $15.00 RCA 80% 1300 / 1625Gm ST - used (L) (cat:p19)
1 874 $10.00 RCA Fire: 126V Run: 85V ST - NOS (OB) JAN - bayonet pin on base
1 874 $10.00 RCA Fire: 118V Run: 91V ST - NOS (OB) JAN - bayonet pin on base
1 874 $10.00 RCA Fire: 115V Run: 86V ST - NOS (OB) bayonet pin on base
1 874 $10.00 RCA Fire: 122V Run: 85V ST - NOS (OB) bayonet pin on base - damaged box
1 874 $10.00 RCA Fire: 108V Run: 86V ST - NOS (OB) bayonet pin on base - damaged box
1 874 $10.00 RCA Fire: 121V Run: 84V ST - NOS (wb) bayonet pin on base - Navy
1 874 $7.50 RCA Fire: 133V Run: 94V ST - used (wb) bayonet pin on base
1 874 $7.50 RCA Fire: 122V Run: 92V ST - used (rb) bayonet pin on base
1 885 $5.00 GE strikes at 27volts 24volts typical ST - NOS (gb) (H)
1 885 $5.00 GE strikes at 27volts 24volts typical ST - NOS (OB) (H)
1 885 $5.00 RCA strikes at 29volts 24volts typical ST - NOS (OB) (H)
1 885 $5.00 RCA strikes at 24volts 24volts typical ST - NOS (OB) (H)
1 885 $5.00 RCA strikes at 27volts 24volts typical ST - NOS (OB) (H) oem box
1 885 $5.00 RCA strikes at 24volts 24volts typical ST - NOS (wb) (H) cat:403-39
1 885 $5.00 RCA strikes at 25volts 24volts typical ST - NOS (wb) (H)
1 885 $5.00 RCA strikes at 24volts 24volts typical ST - NOS (OB) (H) JAN
1 885 $5.00 Sylvania strikes at 29volts 24volts typical ST - NOS (OB) (H) oem box
1 885 $5.00 Raytheon strikes at 22volts 24volts typical ST - NOS (wb) (H)
1 885 $5.00 Raytheon strikes at 16volts 24volts typical ST - NOS (wb) (H)
1 885 $2.50 RCA strikes at 26volts 24volts typical ST - used (OB) (H)
1 885 $2.50 RCA strikes at 25volts 24volts typical ST - used (OB) (H)
1 885 $2.50 RCA strikes at 19volts 24volts typical ST - used (L) (H)
1 885 $2.50 RCA strikes at 26volts 24volts typical ST - used (wb) (H) (cat:P19)
1 885 $2.50 RCA strikes at 23volts 24volts typical ST - used (L) (H) (cat:P19)
1 885 $2.50 RCA strikes at 25volts 24volts typical ST - used (L) (H) (cat:P19)
1 885 $2.50 RCA strikes at 23volts 24volts typical ST - used (L) (H) (cat:P19)
1 885 $2.50 RCA strikes at 24volts 24volts typical ST - used (L) (H) (cat:P19)
1 950 $18.00 Silvertone 110% 1050 / 950Gm ST - NOS (wb) engraved base
1 951 / 1B4P $6.00 Silvertone 130% 1050 / 800Gm ST - used (rb) engraved base
1 951 / 1B4P $6.00 Silvertone 130% 1100 / 800Gm ST - used (L) engraved base
1 951 / 1B4P $6.00 Silvertone 110% 900 / 800Gm ST - used (L) engraved base
1 951 / 1B4P $6.00 Silvertone 130% 850 / 800Gm ST - used (L) engraved base
1 951 / 1B4P $6.00 Silvertone 140% 950 / 800Gm ST - used (L) engraved base
1 1603 $15.00 Tung-Sol 100% 1150 / 1225Gm ST - used (wb) low noise low microphonic 6C6/77
1 1609 $35.00 RCA 115% 1000 / 725Gm ST - NOS (wb) ---
1 1609 $35.00 RCA 100% 900 / 725Gm ST - NOS (wb) ---
1 1609 $20.00 RCA 100% 750 / 725Gm ST - used (wb) ---
1 1609 $18.00 RCA 95% 650 / 725Gm ST - used (wb) ---
1 1229 $6.00 Sylvania 130% 1050 / 640Gm ST - NOS (ob) box flap torn - cat:401-435
1 1229 / 932 $10.00 Sylvania 130% 850 / 640Gm ST - NOS (wb) ---

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