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 32 / VT-44 $15.00 Ken-Rad 110% 700 / 640Gm ST - NOS (wb) JAN
1 32 / VT-44 $15.00 Ken-Rad 110% 750 / 640Gm ST - NOS (wb) JAN
1 32 $10.00 National Union 120% 900 / 640Gm ST - NOS (wb) ---
1 32 $10.00 RCA 110% 800 / 640Gm ST - NOS (wb) solid plate
1 32 $10.00 RCA / Cunningham 110% 800 / 640Gm ST - NOS (wb) engraved base
1 32 $10.00 RCA / Cunningham 120% 850 / 640Gm ST - NOS (wb) engraved base - cat:401-461
1 32 $10.00 RCA / Cunningham 120% 850 / 640Gm ST - NOS (wb) engraved base - cat:401-461
1 32 $10.00 Philco 100% 740 / 640Gm ST - NOS (ob) sealed in box - damaged box
1 32 $7.50 National Union 110% 800 / 640Gm ST - used (L) bayonet pin on base
1 32 $7.50 National Union 100% 900 / 640Gm ST - used (L) bayonet pin on base - cat:312-143
1 32 / VT-44 $7.50 Ken-Rad 110% 750 / 640Gm ST - used (L) JAN
1 32 / VT-44 $7.50 Ken-Rad 100% 750 / 640Gm ST - used (L) JAN
1 32 / VT-44 $7.50 Ken-Rad 120% 900 / 640Gm ST - used (L) JAN
1 32 $5.00 RCA 130% 950 / 640Gm ST - used (ob) damaged box cat:312-383
1 32 $5.00 Wards Super Airline 120% 850 / 640Gm ST - used (rb) cat:32-101
1 32 $5.00 Silvertone 120% 800 / 640Gm ST - used (wb) engraved base
1 32 $5.00 National Union 120% 800 / 640Gm ST - used (L) solid plate
1 32 $5.00 Silvertone 125% 850 / 640Gm ST - used (L) ---
1 32 $5.00 GE 130% 800 / 640Gm ST - used (L) ribbed cap loose cap
1 32 $5.00 Raytheon 100% 800 / 640Gm ST - used (L) solid plate
1 32 $5.00 Raytheon 140% 850 / 640Gm ST - used (L) ---
1 32 $5.00 RCA 110% 800 / 640Gm ST - used (L) solid plate
1 32 $5.00 Ceco 110% 700 / 640Gm ST - used (L) cat:312-175
1 32 $5.00 Cunningham 110% 800 / 640Gm ST - used (L) solid plate
1 32 $5.00 Wards Super Airline 120% 1050 / 640Gm ST - used (L) cat:312-157
1 32 $5.00 Wards Super Airline 120% 1050 / 640Gm ST - used (L) cat:312-139
1 32 $3.00 Crosley by Ken-Rad 90% 700 / 640Gm ST - used (L) engraved base
1 32 $3.00 Wards Super Airline 90% 900 / 640Gm ST - used (L) engraved base - cat:312-237
1 32 $3.00 Sylvania 95% 950 / 640Gm ST - used (rb) engraved base
1 33 / VT-33 $12.00 National Union100% 1500 / 1300Gm NOS (OB) US Army
1 33 / VT-33 $12.00 Ken-Rad 100% 1500 / 1300Gm ST - NOS (OB) US Army
1 33 / VT-33 $12.00 Ken-Rad 110% 1600 / 1300Gm ST - NOS (OB) US Army
1 33 / VT-33 $13.00 Ken-Rad 120% 1650 / 1300Gm ST - NOS (OB) US Army
1 33 / VT-33 $16.00 National Union untested --- ST - NOS (OB) sealed in box - US Army
1 33 / VT-33 $13.00 National Union 110% 2000 / 1300Gm ST - NOS (OB) US Army
1 33 / VT-33 $12.00 Sylvania 110% 1700 / 1300Gm ST - NOS (OB) US Navy - damaged box
1 33 $10.00 Ken-Rad 100% 1850 / 1300Gm ST - NOS (OB) damaged box
1 33 $10.00 Westinghouse 115% 1900 / 1300Gm ST - NOS (OB) ---
1 33 $10.00 Super Silvertone 110% 1400 / 1300Gm ST - NOS (wb) (pl)
1 33 / VT-33 $6.00 National Union 110% 1900 / 1300Gm ST - used (L) ---
1 33 $5.00 GE 105% 1600 / 1300Gm ST - used (L) ---
1 33 $5.00 GE 100% 1700 / 1300Gm ST - used (L) ---
1 33 $5.00 Philco 90% 1700 / 1300Gm ST - used (L) engraved base
1 33 $5.00 Sylvania 120% 2100 / 1300Gm ST - used (L) ---
1 33 $5.00 Silvertone 110% 1800 / 1300Gm ST - used (L) engraved base
1 33 $5.00 Philco 120% 1750 / 1300Gm ST - used (L) ---
1 33 $5.00 Wards Airline 140% 1900 / 1300Gm ST - used (L) ---
1 33 $5.00 unknown 110% 1750 / 1300Gm ST - used (L) ---
1 33 $5.00 National Union 120% 1700 / 1300Gm ST - used (L) ---
1 33 $5.00 National Union 110% 1650 / 1300Gm ST - used (L) engraved base
1 33 $5.00 National Union 120% 1850 / 1300Gm ST - used (L) ---
1 33 $4.00 Majestic 125% 1800 / 1300Gm ST - used (L) engraved base - paint on base

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