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 78 / 38078 $12.00 Raytheon 130% 1800 / 1450Gm ST - used (rb) engraved base - four pillar tube - US Navy
1 78 / 38078 $12.00 Raytheon 120% 1800 / 1450Gm ST - used (rb) engraved base - four pillar tube - US Navy
1 78 $12.00 Raytheon 130% 1850 / 1450Gm ST - used (wb) engraved base - four pillar tube - torn label
1 78 $12.00 Raytheon 120% 1650 / 1450Gm ST - used (wb) engraved base - four pillar tube (pl)
1 78 / VT-78 $7.50 Tung-Sol 135% 1900 / 1450Gm ST - NOS (OB) US Army
1 78 / VT-78 $7.50 Tung-Sol 140% 1950 / 1450Gm ST - NOS (ob) US Army - sealed in box
1 78 / VT-78 $7.50 Tung-Sol untested heater ok ST - NOS (ob) US Army - sealed in box - damaged box
1 78 / 38078 $7.50 S Navy 120% 1650 / 1450Gm ST - NOS (wb) engraved base
1 78 / 38078 $7.50 US Navy 120% 1700 / 1450Gm ST - NOS (wb) ---
1 78 / 38078 $7.50 US Navy 120% 1750 / 1450Gm ST - NOS (wb) ---
1 78 / CKR-78 $7.50 US Navy 120% 1800 / 1450Gm ST - NOS (wb) ---
1 78 $7.00 Philco 130% 1850 / 1450Gm ST - NOS (wb) engraved base
1 78 $7.00 Philco 120% 1450 / 1450Gm ST - NOS (wb) engraved base
1 78 $7.00 Philco 130% 1750 / 1450Gm ST - NOS (wb) engraved base
1 78 $7.00 Philco 130% 1700 / 1450Gm ST - NOS (wb) engraved base
1 78 $7.00 Sylvania 120% 1600 / 1450Gm ST - NOS (wb) engraved base
1 78 $7.00 Sylvania 120% 1750 / 1450Gm ST - NOS (wb) engraved base
1 78 $6.00 Sylvania 140% 1650 / 1450Gm ST - NOS (OB) ---
1 78 $6.00 Sylvania 120% 1850 / 1450Gm ST - NOS (OB) ---
1 78 $6.00 Sylvania 125% 1750 / 1450Gm ST - NOS (OB) ---
1 78 $6.00 Sylvania 120% 1750 / 1450Gm ST - NOS (OB) sealed in box
1 78 $6.00 Sylvania 110% 1450 / 1450Gm ST - NOS (OB) damaged box - cat:403-67
1 78 $6.00 Sylvania 130% 1600 / 1450Gm ST - NOS (OB) cat:403-69
1 78 $6.00 Sylvania 120% 1550 / 1450Gm ST - NOS (OB) US Navy - sealed in box
1 78 $6.00 Sylvania 115% 1550 / 1450Gm ST - NOS (OB) US Navy - sealed in box
1 78 $6.00 Sylvania 120% 1600 / 1450Gm ST - NOS (OB) US Navy
1 78 $6.00 Sylvania 120% 1650 / 1450Gm ST - NOS (wb) US Navy
1 78 $6.00 Sylvania 110% 1450 / 1450Gm ST - NOS (OB) US Navy - sealed in box
1 78 $6.00 Sylvania 120% 1700 / 1450Gm ST - NOS (wb) ---
1 78 $6.00 Sylvania 120% 1450 / 1450Gm ST - NOS (wb) ---
1 78 $6.00 Sylvania 130% 1700 / 1450Gm ST - NOS (wb) ---
1 78 $6.00 Sylvania 120% 1700 / 1450Gm ST - NOS (ob) ---
1 78 $6.00 Sylvania 120% 1800 / 1450Gm ST - NOS (ob) ---
1 78 $6.00 Philco 120% 1800 / 1450Gm ST - NOS (OB) ---
1 78 $6.00 Philco 120% 1650 / 1450Gm ST - NOS (OB) ---
1 78 $6.00 Philco 125% 1900 / 1450Gm ST - NOS (wb) ---
1 78 $6.00 Philco 120% 1600 / 1450Gm ST - NOS (wb) ---
1 78 $6.00 RCA 130% 2000 / 1450Gm ST - NOS (ob) damaged box
1 78 $6.00 RCA 120% 1650 / 1450Gm ST - NOS (ob) US Navy
1 78 $6.00 RCA 120% 1650 / 1450Gm ST - NOS (ob) US Navy - sealed in box
1 78 $6.00 RCA 110% 1550 / 1450Gm ST - NOS (ob) ---
1 78 $6.00 GE 130% 1950 / 1450Gm ST - NOS (OB) sealed in box
1 78 $6.00 Tung-Sol 120% 1800 / 1450Gm ST - NOS (OB) ---
1 78 $6.00 Tung-Sol 130% 1900 / 1450Gm ST - NOS (OB) ---
1 78 $6.00 Tung-Sol 110% 1500 / 1450Gm ST - NOS (OB) ---
1 78 $6.00 Tung-Sol 110% 1550 / 1450Gm ST - NOS (wb) ---
1 78 $6.00 National Union 130% 1600 / 1450Gm ST - NOS (OB) ---
1 78 $6.00 National Union 130% 1550 / 1450Gm ST - NOS (wb) ---
1 78 $6.00 National Union 130% 1800 / 1450Gm ST - NOS (wb) ---
1 78 $6.00 Raytheon 120% 1800 / 1450Gm ST - NOS (OB) sealed in box
1 78 $6.00 Raytheon 110% 1350 / 1450Gm ST - NOS (OB) sealed in box
1 78 $6.00 Raytheon 130% 1800 / 1450Gm ST - NOS (OB) For Western Electric for US Navy - damaged box
1 78 $6.00 Raytheon 120% 1650 / 1450Gm ST - NOS (OB) For Western Electric for US Navy
1 78 $6.00 Tung-Sol 135% 1650 / 1450Gm ST - NOS (ob) US Army damaged box
1 78 / 38078 $5.00 RCA Radiotron 120% 1750 / 1450Gm ST - used (rb) engraved base - US Navy
1 78 $4.50 Philco 110% 1750 / 1450Gm ST - used (rb) engraved base
1 78 $4.50 Philco 115% 1400 / 1450Gm ST - used (rb) engraved base
1 78 $4.50 Philco 110% 1550 / 1450Gm ST - used (rb) engraved base
1 78 $4.50 Raytheon 100% 1400 / 1450Gm ST - used (wb) engraved base
1 78 $4.50 National Union 100% 1550 / 1450Gm ST - used (rb) engraved base
1 78 $4.50 Philco 130% 1500 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Philco 140% 1500 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Philco 120% 1250 / 1450Gm ST - used (L) engraved base
1 78 $4.00 RCA 110% 1350 / 1450Gm ST - used (rb) ---
1 78 $4.00 RCA 120% 1600 / 1450Gm ST - used (rb) ---
1 78 $4.00 RCA 120% 1750 / 1450Gm ST - used (rb) ---
1 78 $4.00 RCA 115% 1450 / 1450Gm ST - used (rb) ---
1 78 $4.00 RCA 110% 1450 / 1450Gm ST - used (rb) ---
1 78 $4.00 RCA 120% 1700 / 1450Gm ST - used (wb) ---
1 78 $4.00 RCA Victor 115% 1600 / 1450Gm ST - used (rb) ---
1 78 $4.00 Philco 100% 1550 / 1450Gm ST - used (wb) ---
1 78 $4.00 Philco 110% 1650 / 1450Gm ST - used (rb) ---
1 78 $4.00 Philco 100% 1300 / 1450Gm ST - used (rb) ---
1 78 $4.00 Philco 110% 1600 / 1450Gm ST - used (rb) ---
1 78 $4.00 Philco 110% 1450 / 1450Gm ST - used (ob) ---
1 78 $4.00 Sylvania 120% 1650 / 1450Gm ST - used (rb) ---
1 78 $4.00 Sylvania 120% 1500 / 1450Gm ST - used (ob) ---
1 78 $4.00 Sylvania 110% 1350 / 1450Gm ST - used (ob) ---
1 78 $4.00 Sylvania 125% 1700 / 1450Gm ST - used (ob) missing box flap
1 78 $4.00 unknown 130% 1900 / 1450Gm ST - used (rb) ---
1 78 $4.00 GE 110% 1700 / 1450Gm ST - used (rb) ---
1 78 $4.00 Raytheon 110% 1350 / 1450Gm ST - used (ob) ---
1 78 $4.00 Raytheon 115% 1400 / 1450Gm ST - used (ob) ---
1 78 $4.00 Tung-Sol 100% 1600 / 1450Gm ST - used (rb) ---
1 78 $4.00 Tung-Sol 120% 1650 / 1450Gm ST - used (rb) ---
1 78 $4.00 Tung-Sol 120% 1600 / 1450Gm ST - used (rb) ---
1 78 $4.00 Delco 120% 1850 / 1450Gm ST - used (wb) ---
1 78 $4.00 Delco 120% 1800 / 1450Gm ST - used (wb) ---
1 78 $4.00 National Union 100% 1200 / 1450Gm ST - used (L) ---
1 78 $4.00 Arcturus 130% 1400 / 1450Gm ST - 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, 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