MDB Ventures Industrial, Ham Radio Transmitter and Power Tubes

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for more audio and rectifier tubes.


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 Industrial, Ham Radio Transmitter and Power Tubes
Qty
Avail
Tube
Type
Price
Each
Tube
Brand
Emission
Strength
Mutual
Conduct

Desc

Notes
1 803 $45.00 Westinghouse untested heater ok used (L) white ceramic base - clear bulb - graphite plate - brown base - US Navy
1 803 $35.00 RCA untested heater ok used (L) clear bulb - graphite plate - brown base
1 803 $35.00 RCA untested heater ok used (L) clear bulb - graphite plate - brown base - cat:401-341
1 803 $12.00 unknown untested heater ok used (L) clear bulb - graphite plate - brown base - loose base
1 805 $20.00 National Union untested heater ok used (L) graphite plate - loose cap
1 813 $15.00 Raytheon untested heater ok used (OB) loose cap
1 813 $20.00 Westinghouse untested heater ok used (L) JAN - clear bulb - graphite plate
1 813 $20.00 Amperex untested heater ok used (L) clear bulb - graphite plate
1 813/VT-144 $24.00 National Union untested heater ok used (L) JAN - clear blub - graphite plate
1 813 $20.00 Philips untested heater ok used (L) QB2/250 - clear bulb - graphite plate
1 814 $15.00 RCA untested heater ok used (L) ---
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, (TT)=Tall Tubular, (M7)=7pin miniature, (M9)=9pin miniature, (A)=Acorn, (N)=Nuvistor, (SM)=subminiature, 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 Industrial, Ham Radio Transmitter and Power 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