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
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1 | 5Z3 | $10.00 | Silvertone | 110% / 110% | --- | ST - used (rb) | bottom getter - bayonet pin on base (p15) |
1 | 5Z3 | $10.00 | GE | 105% / 105% | --- | ST - used (rb) | bottom getter (p15) |
1 | 5Z3 | $10.00 | GE | 115% / 115% | --- | ST - used (ob) | bottom getter - missing box flap (p15) |
1 | 5Z3 | $10.00 | Motorola | 120% / 120% | --- | ST - used (rb) | top getter - missing box flap (p15) |
1 | 5Z3 | $10.00 | National Union | 100% / 100% | --- | ST - used (wb) | bottom getter - bayonet pin on base (p15) |
1 | 5Z3 | $10.00 | Sylvania | 110% / 110% | --- | ST - used (L) | bottom getter - cat:402-333 (p15) |
1 | 5Z3 | $10.00 | Sylvania | 100% / 110% | --- | ST - used (L) | bottom getter - hanging filament (p15) |
1 | 5Z3 | $10.00 | Sylvania | 110% / 110% | --- | ST - used (L) | top getter - cat:312-4 (p15) |
1 | 5Z3 | $10.00 | Sylvania | 110% / 110% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | Sylvania | 105% / 100% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | Sylvania | 105% / 105% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | Sylvania | 110% / 110% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | RCA | 115% / 115% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | RCA | 110% / 110% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | RCA | 100% / 100% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | RCA | 105% / 110% | --- | ST - used (L) | bottom getter (p15) |
1 | 5Z3 | $10.00 | GE | 105% / 105% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | GE | 110% / 110% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | GE | 110% / 110% | --- | ST - used (L) | bottom getter (p15) |
1 | 5Z3 | $10.00 | Westinghouse | 115% / 115% | --- | ST - used (L) | bottom getter (p15) |
1 | 5Z3 | $10.00 | Video | 105% / 110% | --- | ST - used (L) | bottom getter (p15) |
1 | 5Z3 | $10.00 | unknown | 100% / 100% | --- | ST - used (L) | top getter (p15) |
1 | 5Z3 | $10.00 | unknown | 100% / 100% | --- | ST - used (L) | bottom getter (p15) |
1 | 5Z3 | $10.00 | unknown | 110% / 105% | --- | ST - used (L) | bottom getter (p15) |
1 | 5Z3 | $10.00 | unknown | 110% / 100% | --- | ST - used (L) | bottom getter (p15) |
1 | 5Z3 | $10.00 | unknown | 110% / 100% | --- | ST - used (L) | bottom getter (p15) |
1 | 5Z3 / VT-145 | $7.50 | Sylvania | 110% / 110% | --- | ST - used (L) | bottom getter - JAN - white particles inside (p15) |
1 | 5Z3 / VT-145 | $7.50 | Sylvania | 110% / 100% | --- | ST - used (L) | bottom getter - JAN - hanging filament - white particles inside (p15) |
1 | 5Z3 / VT-145 | $7.50 | Sylvania | 100% / 100% | --- | ST - used (L) | bottom getter - JAN - white particles inside - hanging filament (p15) |
1 | 5Z3 | $5.00 | unknown | 110% / 110% | --- | ST - used (L) | bottom getter - particles inside (p15) |
1 | 5Z3 | $4.00 | unknown | 120% / 120% | --- | ST - used (L) | bottom getter - loose glass inside - rattle in base (p15) |
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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Return to
Preoctal and Globe/Balloon Vacuum Tube List
Don't forget to visit our
Discount Bargain Packs
and
Bargain Bin Tubes
for more savings!
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