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Type: 5Z3 ( 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 | 5Z3 | $19.00 | RCA | 110%/110% | --- | ST - NOS (wb) | top getter
| | 1 | 5Z3 | $19.00 | National Union | 110%/110% | --- | ST - NOS (wb) | bottom getter
| | 1 | 5Z3 | $9.00 | RCA/Cunningham | 100%/100% | --- | ST - used (wb) | bottom getter - engraved base
| | 1 | 5Z3/VT-145 | $10.00 | RCA | 110%/110% | --- | ST - used (ob) | bottom getter - JAN
| | 1 | 5Z3/VT-145 | $9.00 | RCA | 100%/100% | --- | ST - used (ob) | bottom getter - JAN
| | 1 | 5Z3/VT-145 | $9.00 | RCA | 100%/100% | --- | ST - used (rb) | bottom getter - US Army - missing box flap
| | 1 | 5Z3 | $10.00 | RCA | 105%/105% | --- | ST - used (rb) | bottom getter
| | 1 | 5Z3 | $12.00 | RCA | 100%/100% | --- | ST - used (rb) | top getter brown base
| | 1 | 5Z3 | $10.00 | Silvertone | 110%/110% | --- | ST - used (rb) | bottom getter - bayonet pin on base
| | 1 | 5Z3 | $9.00 | Ken-Rad | 100%/100% | --- | ST - used (rb) | bottom getter - cat:312-165
| | 1 | 5Z3 | $10.00 | GE | 105%/105% | --- | ST - used (rb) | bottom getter
| | 1 | 5Z3 | $10.00 | Motorola | 120%/120% | --- | ST - used (rb) | top getter - missing box flap
| | 1 | 5Z3 | $10.00 | National Union | 110%/110% | --- | ST - used (rb) | bottom getter
| | 1 | 5Z3 | $10.00 | National Union | 115%/110% | --- | ST - used (ob) | bottom getter
| | 1 | 5Z3 | $10.00 | National Union | 100%/100% | --- | ST - used (wb) | bottom getter - bayonet pin on base
| | 1 | 5Z3 | $10.00 | GE | 115%/115% | --- | ST - used (ob) | bottom getter - missing box flap
| | 1 | 5Z3/VT-145 | $9.00 | Sylvania | 100%/100% | --- | ST - used (L) | bottom getter - hanging filament (p16)
| | 1 | 5Z3/VT-145 | $7.00 | Sylvania | 100%/100% | --- | ST - used (L) | bottom getter - JAN - white particles inside - hanging filament (p16)
| | 1 | 5Z3/VT-145 | $10.00 | Sylvania | 100%/100% | --- | ST - used (L) | bottom getter - JAN - hanging filament (p16)
| | 1 | 5Z3/VT-145 | $10.00 | Sylvania | 110%/100% | --- | ST - used (L) | bottom getter - JAN - hanging filament - white particles inside (p16)
| | 1 | 5Z3/VT-145 | $7.00 | Sylvania | 110%/110% | --- | ST - used (L) | bottom getter - JAN - white particles inside
| | 1 | 5Z3 | $10.00 | Sylvania | 110%/110% | --- | ST - used (L) | bottom getter - cat:402-333
| | 1 | 5Z3 | $9.00 | Sylvania | 100%/110% | --- | ST - used (L) | bottom getter - hanging filament (p16)
| | 1 | 5Z3 | $10.00 | Sylvania | 110%/110% | --- | ST - used (L) | top getter - cat:312-4
| | 1 | 5Z3 | $9.00 | Sylvania | 100%/100% | --- | ST - used (L) | bottom getter - JAN
| | 1 | 5Z3 | $9.00 | Sylvania | 110%/100% | --- | ST - used (L) | bottom getter - JAN
| | 1 | 5Z3 | $10.00 | Sylvania | 110%/110% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $9.00 | Sylvania | 105%/100% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $9.00 | Sylvania | 100%/100% | --- | ST - used (L) | bottom getter - hanging filament (p16)
| | 1 | 5Z3 | $9.00 | Sylvania | 100%/100% | --- | ST - used (L) | bottom getter - hanging filament (p16)
| | 1 | 5Z3 | $10.00 | Sylvania | 105%/105% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $9.00 | Sylvania | 100%/105% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $10.00 | Sylvania | 110%/110% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $9.00 | Ken-Rad | 100%/100% | --- | ST - used (L) | bottom getter - cat:403-315
| | 1 | 5Z3 | $9.00 | Raytheon | 100%/100% | --- | ST - used (L) | bottom getter - JAN
| | 1 | 5Z3 | $9.00 | Raytheon | 100%/100% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $9.00 | Raytheon | 100%/100% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3/VT-145 | $9.00 | National Union | 100%/105% | --- | ST - used (L) | bottom getter - JAN
| | 1 | 5Z3 | $9.00 | National Union | 100%/100% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $9.00 | National Union | 100%/100% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3/VT-145 | $9.00 | National Union | 100%/100% | --- | ST - used (L) | bottom getter - JAN
| | 1 | 5Z3 | $9.00 | Tung-Sol | 100%/100% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $10.00 | Tung-Sol | 110%/110% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $10.00 | RCA | 115%/115% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $10.00 | RCA | 110%/110% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $9.00 | RCA | 100%/100% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $10.00 | RCA | 105%/110% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $10.00 | GE | 105%/105% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $10.00 | GE | 110%/110% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $10.00 | GE | 110%/110% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $10.00 | Westinghouse | 115%/115% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $10.00 | Video | 105%/110% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $6.00 | unknown | 100%/100% | --- | ST - used (L) | top getter
| | 1 | 5Z3 | $7.00 | unknown | 110%/110% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $7.00 | unknown | 110%/110% | --- | ST - used (L) | bottom getter - particles inside
| | 1 | 5Z3 | $6.00 | unknown | 100%/100% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $7.00 | unknown | 110%/105% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $6.00 | unknown | 110%/100% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $6.00 | unknown | 110%/100% | --- | ST - used (L) | bottom getter
| | 1 | 5Z3 | $5.00 | unknown | 120%/120% | --- | ST - used (L) | bottom getter - loose glass inside - rattle in 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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