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 5Z3 / VT-145 $10.00 RCA 110% / 110% --- ST - used (ob) bottom getter - JAN (p15)
1 5Z3 / VT-145 $10.00 RCA 100% / 100% --- ST - used (ob) bottom getter - JAN (p15)
1 5Z3 / VT-145 $10.00 RCA 100% / 100% --- ST - used (rb) bottom getter - US Army - missing box flap (p15)
1 5Z3 $10.00 RCA 105% / 105% --- ST - used (rb) bottom getter (p15)
1 5Z3 $12.00 RCA 100% / 100% --- ST - used (rb) top getter brown base (p15)
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 110% / 110% --- ST - used (rb) bottom getter (p15)
1 5Z3 $10.00 National Union 115% / 110% --- ST - used (ob) bottom getter (p15)
1 5Z3 $10.00 National Union 100% / 100% --- ST - used (wb) bottom getter - bayonet pin on base (p15)
1 5Z3 / VT-145 $10.00 Sylvania 100% / 100% --- ST - used (L) bottom getter - hanging filament (p15)
1 5Z3 / VT-145 $10.00 Sylvania 100% / 100% --- ST - used (L) bottom getter - JAN - hanging filament (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 100% / 100% --- ST - used (L) bottom getter - JAN (p15)
1 5Z3 $10.00 Sylvania 110% / 100% --- ST - used (L) bottom getter - JAN (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 100% / 100% --- ST - used (L) bottom getter - hanging filament (p15)
1 5Z3 $10.00 Sylvania 100% / 100% --- ST - used (L) bottom getter - hanging filament (p15)
1 5Z3 $10.00 Sylvania 105% / 105% --- ST - used (L) top getter (p15)
1 5Z3 $10.00 Sylvania 100% / 105% --- ST - used (L) top getter (p15)
1 5Z3 $10.00 Sylvania 110% / 110% --- ST - used (L) top getter (p15)
1 5Z3 $10.00 Raytheon 100% / 100% --- ST - used (L) bottom getter - JAN (p15)
1 5Z3 $10.00 Raytheon 100% / 100% --- ST - used (L) bottom getter (p15)
1 5Z3 $10.00 Raytheon 100% / 100% --- ST - used (L) bottom getter (p15)
1 5Z3 / VT-145 $10.00 National Union 100% / 105% --- ST - used (L) bottom getter - JAN (p15)
1 5Z3 $10.00 National Union 100% / 100% --- ST - used (L) bottom getter (p15)
1 5Z3 $10.00 National Union 100% / 100% --- ST - used (L) bottom getter (p15)
1 5Z3 / VT-145 $10.00 National Union 100% / 100% --- ST - used (L) bottom getter - JAN (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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Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com