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 NU-36 $10.00 National Union 115% 1150 / 1050Gm ST - NOS (wb) engraved base
1 36 / VT-36 $8.00 Tung-Sol 120% 1200 / 1050Gm ST - NOS (OB) US Army
1 36 / VT-36 $8.00 Tung-Sol 100% 1150 / 1050Gm ST - NOS (OB) US Army
1 36 / VT-36 $8.00 Tung-Sol 135% 1100 / 1050Gm ST - NOS (OB) US Army - sealed in box
1 36 / VT-36 $8.00 Tung-Sol 120% 1050 / 1050Gm ST - NOS (ob) US Army - damaged box
1 36 / VT-36 $8.00 Tung-Sol 120% 1050 / 1050Gm ST - NOS (OB) US Army
1 36 / VT-36 $8.00 Sylvania 150% 1050 / 1050Gm ST - NOS (OB) JAN
1 36 / VT-36 $8.00 Sylvania 135% 1250 / 1050Gm ST - NOS (OB) US Army
1 36 / VT-36 $8.00 Sylvania 150% 1150 / 1050Gm ST - NOS (OB) US Army - damaged box
1 36 / VT-36 $8.00 Sylvania 140% 1050 / 1050Gm ST - NOS (OB) US Army - damaged box
1 36 / VT-36 $8.00 Sylvania 150% 1050 / 1050Gm ST - NOS (wb) ---
1 36 $7.50 RCA 115% 1250 / 1050Gm ST - NOS (OB) torn box flap
1 36 $7.50 RCA 140% 1300 / 1050Gm ST - NOS (OB) ---
1 36 $7.50 RCA 140% 1100 / 1050Gm ST - NOS (wb) ---
1 36 $7.50 RCA Victor 120% 1050 / 1050Gm ST - NOS (ob)
1 36 $7.50 Philco 110% 1050 / 1050Gm ST - NOS (OB) sealed in box
1 36 $7.50 Philco 140% 2200 / 1050Gm ST - NOS (OB) sealed in box
1 36 $7.50 Philco 130% 1050 / 1050Gm ST - NOS (OB) sealed in box
1 36 $7.50 Philco 125% 1050 / 1050Gm ST - NOS (OB) sealed in box
1 36 $7.50 Philco 140% 1200 / 1050Gm ST - NOS (OB) sealed in box
1 36 $7.50 Hytron 140% 1100 / 1050Gm ST - NOS (OB) ---
1 36 $7.50 National Union 110% 1050 / 1050Gm ST - NOS (OB) ---
1 36 $7.50 National Union 110% 1050 / 1050Gm ST - NOS (OB) ---
1 36 $7.50 National Union 125% 1050 / 1050Gm ST - NOS (OB) US Army
1 36 $7.50 Sylvania 140% 1050 / 1050Gm ST - NOS (OB) sealed in box
1 36 / VT-36 $6.00 Sylvania 110% 900 / 1050Gm ST - used (L) ---
1 NU-36 $6.00 National Union 140% 1350 / 1050Gm ST - used (L) engraved base
1 NU-36 $6.00 National Union 140% 1300 / 1050Gm ST - used (L) engraved base
1 NU-36 $6.00 National Union 100% 1250 / 1050Gm ST - used (L) engraved base - cat:312-231
1 NU-36 $6.00 National Union 130% 1300 / 1050Gm ST - used (L) engarved base
1 36 $5.00 Philco 110% 1000 / 1050Gm ST - used (ob) cat:312-239 missing box flap
1 36 $5.00 Philco 125% 1150 / 1050Gm ST - used (ob) cat:32-391
1 36 $5.00 National Union 135% 1250 / 1050Gm ST - used (rb) ---
1 36 $5.00 National Union 130% 900 / 1050Gm ST - used (rb) ---
1 36 $5.00 Tung-Sol 110% 1050 / 1050Gm ST - used (rb) engraved base - perforated plate
1 36 $5.00 Sylvania 120% 1050 / 1050Gm ST - used (ob) missing box flap
1 36 $5.00 Sylvania 125% 1200 / 1050Gm ST - used (rb) solid plate
1 36 $5.00 Sylvania 140% 850 / 1050Gm ST - used (rb) engraved base
1 36 $5.00 Sylvania 140% 1100 / 1050Gm ST - used (L) solid plate
1 36 $5.00 Sylvania 135% 950 / 1050Gm ST - used (L) ---
1 36 $5.00 Tung-Sol 105% 1000 / 1050Gm ST - used (L) perforated plate
1 36 $5.00 Philco 100% 950 / 1050Gm ST - used (L) engraved base
1 36 $5.00 Knight 110% 1100 / 1050Gm ST - used (L) engraved base
1 36 $5.00 Knight 150% 1150 / 1050Gm ST - used (L) engraved base
1 36 $5.00 Ken-Rad 140% 1300 / 1050Gm ST - used (L) engraved base
1 36 $5.00 RCA / Cunningham 100% 1050 / 1050Gm ST - used (L) engraved base - cat:32-521
1 36 $5.00 National Union 120% 1250 / 1050Gm ST - used (L) engraved base
1 36 $5.00 National Union 100% 1200 / 1050Gm ST - used (L) engraved base - cat:32-691
1 36 $3.00 Philco 90% 900 / 1050Gm ST - used (L) engraved base
1 36 $3.00 Silvertone 90% 1000 / 1050Gm ST - used (L) engraved base
1 36 $3.00 RCA Radiotron 90% 950 / 1050Gm ST - used (L) engraved base
1 36 $3.00 RCA / Cunningham 90% 950 / 1050Gm ST - used (L) engraved base
1 36 $3.00 National Union 90% 1050 / 1050Gm ST - used (L) ---
1 36 $2.00 RCA Radiotron 85% 900 / 1050Gm ST - used (L) ---
1 37 / VT-37 $20.00 Western Electric 115% 1250 / 900Gm ST - NOS (OB) sealed in box - US Army
1 37 / VT-37 $15.00 Hytron untested heater ok ST - NOS (OB) sealed in box - torn flap
1 37 / VT-37 $1500 RCA 120% 1250 / 900Gm ST - NOS (OB)
1 37 / VT-37 $15.00 RCA 115% 1250 / 900Gm ST - NOS (OB) US Army - damaged box
1 37A $15.00 Zenith 110% 1400 / 900Gm ST - used (L) engraved base
1 37 $15.00 Ken-Rad 110% 1200 / 900Gm ST - NOS (OB) sealed in box
1 37 $15.00 Hytron 110% 1250 / 900Gm ST - NOS (OB) sealed in box - torn test flap
1 37 $15.00 RCA / Cunnigham 120% 1500 / 900Gm ST - NOS (wb) engraved base
1 37 $15.00 RCA Victor 120% 1400 / 900Gm ST - NOS (OB) ---
1 37 $15.00 RCA 115% 2200 / 900Gm ST - NOS (ob) damaged box
1 37 $7.50 Raytheon 120% 1300 / 900Gm ST - used (wb) ---
1 37 $7.50 Sylvania 110% 1150 / 900Gm ST - used (rb) ---
1 37 $7.50 RCA Radiotron 110% 1050 / 900Gm ST - used (rb) engraved base
1 37 $7.50 RCA 100% 1100 / 900Gm ST - used (L) ---
1 37 $7.50 RCA / Cunningham 100% 1350 / 900Gm ST - used (L) engraved base (pl)
1 37 $7.50 RCA / Cunningham 100% 1150 / 900Gm ST - used (L) engraved base
1 37 $7.50 RCA / Cunningham 110% 1250 / 900Gm ST - used (L) engraved base
1 37 $7.50 RCA / Cunningham 110% 1300 / 900Gm ST - used (L) engraved base
1 37 $7.50 RCA / Cunningham 100% 1200 / 900Gm ST - used (L) engraved base
1 37 $7.50 National Union 100% 1300 / 900Gm ST - used (L) ---
1 37 $7.50 National Union 120% 1500 / 900Gm ST - used (L) ---
1 37 $7.50 National Union 110% 1400 / 900Gm ST - used (L) ---
1 37 $7.50 National Union 100% 1300 / 900Gm ST - used (L) ---
1 37 $7.50 Tung-Sol 120% 1450 / 900Gm ST - used (L) engraved base
1 37 $7.50 Triad 130% 1550 / 900Gm ST - used (rb) ---
1 37 $7.50 Sylvania 110% 1500 / 900Gm ST - used (L) ---
1 37 $7.50 Sylvania 100% 1350 / 900Gm ST - used (L) ---
1 37 $6.00 Philco 95% 1100 / 900Gm ST - used (L) ---
1 37 $4.00 Philco 80% 1050 / 900Gm ST - used (L) ---
1 37 $4.00 Tung-Sol 80% 1050 / 900Gm ST - used (L) engraved base
1 37 $5.00 National Union 70% 800 / 900Gm ST - used (L) mesh plate - engraved 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