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Type: 36 , 37 ( NOS and Used )
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, miniature, subminiature, metal, power, transmitter tubes and many more.
MDB Ventures Preoctal Tubes
Quantity
Available | Tube
Type | Price
Each | Tube
Brand | Emission
Strength | Mutual
Conductance |
Description |
Notes
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| 1 | NU-36 | $10.00 | National Union | 115% | 1150/1050Gm | ST - NOS (wb) | engraved base
| | 1 | 36/VT-36 | $8.00 | Tung-Sol | 140% | 1400/1050Gm | ST - NOS (OB) | US Army
| | 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 | $5.50 | RCA | 115% | 1250/1050Gm | ST - NOS (OB) | torn box flap
| | 1 | 36 | $6.00 | RCA | 140% | 1300/1050Gm | ST - NOS (OB) | ---
| | 1 | 36 | $6.00 | RCA | 140% | 1100/1050Gm | ST - NOS (wb) | ---
| | 1 | 36 | $5.50 | 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 | $6.00 | Hytron | 140% | 1100/1050Gm | ST - NOS (OB) | ---
| | 1 | 36 | $6.00 | National Union | 110% | 1050/1050Gm | ST - NOS (OB) | ---
| | 1 | 36 | $6.00 | National Union | 110% | 1050/1050Gm | ST - NOS (OB) | ---
| | 1 | 36 | $6.00 | 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 | NU-36 | $5.00 | National Union | 130% | 1400/1050Gm | ST - used (rb) | engraved base
| | 1 | 36 | $3.50 | Philco | 110% | 1000/1050Gm | ST - used (ob) | cat:312-239 missing box flap
| | 1 | 36 | $4.00 | Philco | 125% | 1150/1050Gm | ST - used (ob) | cat:32-391
| | 1 | 36 | $4.00 | National Union | 135% | 1250/1050Gm | ST - used (rb) | ---
| | 1 | 36 | $4.00 | National Union | 130% | 900/1050Gm | ST - used (rb) | ---
| | 1 | 36 | $4.50 | Tung-Sol | 110% | 1050/1050Gm | ST - used (rb) | engraved base - perforated plate
| | 1 | 36 | $3.50 | Sylvania | 120% | 1050/1050Gm | ST - used (ob) | missing box flap
| | 1 | 36 | $3.50 | Sylvania | 125% | 1200/1050Gm | ST - used (rb) | solid plate
| | 1 | 36 | $4.00 | Sylvania | 140% | 850/1050Gm | ST - used (rb) | engraved base
| | 1 | 36/VT-36 | $5.00 | 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 | Sylvania | 140% | 1100/1050Gm | ST - used (L) | solid plate
| | 1 | 36 | $4.50 | Sylvania | 135% | 950/1050Gm | ST - used (L) | ---
| | 1 | 36 | $4.00 | Tung-Sol | 105% | 1000/1050Gm | ST - used (L) | perforated plate
| | 1 | 36 | $3.00 | Silvertone | 90% | 1000/1050Gm | ST - used (L) | engraved base
| | 1 | 36 | $4.00 | Philco | 100% | 950/1050Gm | ST - used (L) | engraved base
| | 1 | 36 | $5.00 | Knight | 110% | 1100/1050Gm | ST - used (L) | engraved base
| | 1 | 36 | $4.00 | Knight | 150% | 1150/1050Gm | ST - used (L) | engraved base
| | 1 | 36 | $4.00 | Ken-Rad | 140% | 1300/1050Gm | ST - used (L) | engraved base
| | 1 | 36 | $3.00 | RCA Radiotron | 85% | 900/1050Gm | ST - used (L) | ---
| | 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 | RCA/Cunningham | 100% | 1050/1050Gm | ST - used (L) | engraved base - cat:32-521
| | 1 | 36 | $3.00 | National Union | 90% | 1050/1050Gm | ST - used (L) | ---
| | 1 | 36 | $4.00 | National Union | 120% | 1250/1050Gm | ST - used (L) | engraved base
| | 1 | 36 | $3.50 | National Union | 100% | 1200/1050Gm | ST - used (L) | engraved base - cat:32-691
| | 1 | 37/VT-37 | $16.00 | Hytron | untested | heater ok | ST - NOS (OB) | sealed in box - torn flap
| | 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 | RCA | 120% | 1250/900Gm | ST - NOS (OB)
| | 1 | 37/VT-37 | $13.00 | RCA | 115% | 1250/900Gm | ST - NOS (OB) | US Army - damaged box
| | 1 | 37/VT-37 | $15.00 | National Union | 110% | 1400/900Gm | ST - NOS (wb) | ---
| | 1 | 37/VT-37 | $20.00 | Raytheon | 110% | 1350/900Gm | ST - NOS (ob) | engraved base - four pillar tube - US Army - no label
| | 1 | 37/VT-37 | $18.00 | Raytheon | 120% | 1350/900Gm | ST - NOS (wb) | engraved base - four pillar tube - no label
| | 1 | 37A | $18.00 | 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 | $12.00 | Sylvania | 120% | 1300/900Gm | ST - NOS (wb) | ---
| | 1 | 37 | $13.00 | Sylvania | 140% | 1600/900Gm | ST - NOS (wb) | engraved base (pl)
| | 1 | 37 | $12.00 | Philco | 110% | 1350/900Gm | ST - NOS (wb) | ---
| | 1 | 37 | $12.00 | Philco | 110% | 1450/900Gm | ST - NOS (wb) | ---
| | 1 | 37 | $14.00 | Hytron | 110% | 1250/900Gm | ST - NOS (OB) | sealed in box - torn test flap
| | 1 | 37 | $13.00 | RCA/Cunnigham | 120% | 1500/900Gm | ST - NOS (wb) | engraved base
| | 1 | 37 | $42.00 | RCA Victor | 120% | 1400/900Gm | ST - NOS (OB) | ---
| | 1 | 37 | $12.00 | RCA | 115% | 2200/900Gm | ST - NOS (ob) | damaged box
| | 1 | 37 | $15.00 | National Union | untested | --- | ST - NOS (OB) | sealed in box
| | 1 | 37 | $12.00 | National Union | 120% | 1500/900Gm | ST - NOS (OB) | damaged box
| | 1 | 37 | $12.00 | National Union | 120% | 1400/900Gm | ST - NOS (wb) | ---
| | 1 | 37 | $15.00 | Raytheon | 100% | 1100/900Gm | ST - NOS (OB) | sealed in box
| | 1 | 37 | $15.00 | Raytheon | 100% | 1150/900Gm | ST - NOS (OB) | sealed in box
| | 1 | 37 | $18.00 | Raytheon | 120% | 1300/900Gm | ST - NOS (wb) | engraved base - four pillar tube - with label
| | 1 | 37 | $11.00 | Raytheon | 110% | 1350/900Gm | ST - used (wb) | engraved base - four pillar tube - torn label
| | 1 | 37 | $11.00 | Raytheon | 110% | 1300/900Gm | ST - used (wb) | engraved base - four pillar tube - no label
| | 1 | 37 | $12.00 | Raytheon | 120% | 1400/900Gm | ST - used (wb) | engraved base - four pillar tube - no label
| | 1 | 37 | $8.00 | 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 | $6.50 | Philco | 90% | 1150/900Gm | ST - used (L) | engraved base
| | 1 | 37 | $7.00 | Philco | 100% | 1200/900Gm | ST - used (L) | engraved base
| | 1 | 37 | $7.50 | Philco | 110% | 1300/900Gm | ST - used (L) | ---
| | 1 | 37 | $6.50 | Philco | 95% | 1100/900Gm | ST - used (L) | ---
| | 1 | 37 | $7.00 | Philco | 100% | 1150/900Gm | ST - used (L) | ---
| | 1 | 37 | $7.00 | Philco | 100% | 1050/900Gm | ST - used (L) | ---
| | 1 | 37 | $6.00 | Philco | 80% | 1050/900Gm | ST - used (L) | ---
| | 1 | 37 | $8.00 | Philco | 120% | 1500/900Gm | ST - used (L) | ---
| | 1 | 37 | $7.00 | 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 | $8.00 | RCA/Cunningham | 110% | 1250/900Gm | ST - used (L) | engraved base
| | 1 | 37 | $8.00 | 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 | $6.00 | Tung-Sol | 80% | 1050/900Gm | ST - used (L) | engraved base
| | 1 | 37 | $7.00 | National Union | 100% | 1300/900Gm | ST - used (L) | ---
| | 1 | 37 | $8.00 | National Union | 120% | 1500/900Gm | ST - used (L) | ---
| | 1 | 37 | $8.00 | National Union | 110% | 1400/900Gm | ST - used (L) | ---
| | 1 | 37 | $7.00 | National Union | 100% | 1300/900Gm | ST - used (L) | ---
| | 1 | 37 | $8.50 | Tung-Sol | 120% | 1450/900Gm | ST - used (L) | engraved base
| | 1 | 37 | $8.00 | Triad | 130% | 1550/900Gm | ST - used (rb) | ---
| | 1 | 37 | $7.50 | Sylvania | 110% | 1500/900Gm | ST - used (L) | ---
| | 1 | 37 | $7.00 | Sylvania | 100% | 1350/900Gm | ST - used (L) | ---
| | 1 | 37 | $7.00 | Sylvania | 100% | 1250/900Gm | ST - used (L) | engraved base
| | 1 | 37 | $15.00 | Raytheon | 120% | 1350/900Gm | ST - NOS (wb) | mesh plate - engraved base - four pillar tube - with label
| | 1 | 37 | $10.00 | National Union | 110% | 1350/900Gm | ST - NOS (wb) | mesh plate - engraved base
| | 1 | 37 | $9.00 | Silvertone | 95% | 1100/900Gm | ST - used (L) | mesh plate - engraved base
| | 1 | 37 | $5.00 | National Union | 70% | 800/900Gm | ST - used (L) | mesh plate - engraved base
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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.
Contact MDB Ventures sales@mdbventures.com
Due to the highly volatile nature of the tube business, all Prices are subject to change without notice.
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