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 77 / VT-77 $4.00 Raytheon 120% 1400 / 1225Gm ST - used (L) cat:401-450
1 77 / VT-77 $4.00 Raytheon 130% 1400 / 1225Gm ST - used (L) ---
1 77 / VT-77 $4.00 Raytheon 120% 1350 / 1225Gm ST - used (L) ---
1 77 / VT-77 $4.00 RCA 120% 1300 / 1225Gm ST - used (L) ---
1 77 $3.50 Philco 100% 1225 / 1225Gm ST - used (L) engraved base
1 77 $3.50 Philco 100% 1250 / 1225Gm ST - used (L) engraved base
1 77 $3.00 RCA 110% 1250 / 1225Gm ST - used (L) US Navy
1 77 $3.00 RCA 120% 1350 / 1225Gm ST - used (L) US Navy - cat:401-464
1 77 $3.00 RCA 120% 1350 / 1225Gm ST - used (L) cat:312-218
1 77 $3.00 RCA 110% 1250 / 1225Gm ST - used (L) US Navy
1 77 $3.00 Ken-Rad 120% 1450 / 1225Gm ST - used (L) US Navy - cat:312-220
1 77 $3.00 National Union 120% 1250 / 1225Gm ST - used (L) ---
1 77 $3.00 National Union 110% 1350 / 1225Gm ST - used (L) cat:401-471
1 77 $3.00 Tung-Sol 110% 1250 / 1225Gm ST - used (L) ---
1 77 $3.00 Tung-Sol 130% 1400 / 1225Gm ST - used (L) ---
1 77 $3.00 Sylvania 115% 1400 / 1225Gm ST - used (L) ---
1 77 $3.00 Philco 110% 1225 / 1225Gm ST - used (L) ---
1 77 $3.00 Tung-Sol 100% 1150 / 1225Gm ST - used (L) ---
1 77 $3.00 Tung-Sol 105% 1200 / 1225Gm ST - used (L) ---
1 77 $3.00 Tung-Sol 105% 1200 / 1225Gm ST - used (L) ---
1 77 $3.00 Tung-Sol 105% 1100 / 1225Gm ST - used (L) ---
1 77 $3.00 RCA 100% 1250 / 1225Gm ST - used (L) US Navy
1 77 $3.00 RCA 100% 1150 / 1225Gm ST - used (L) ---
1 77 $3.00 RCA 100% 1200 / 1225Gm ST - used (L) ---
1 77 $3.00 RCA / Cunningham 100% 1200 / 1225Gm ST - used (L) engraved base
1 77 $3.00 Philco 100% 1150 / 1225Gm ST - used (L) ---
1 77 $3.00 Sylvania 100% 1100 / 1225Gm ST - used (L) US Army
1 77 $3.00 Zenith 105% 1150 / 1225Gm ST - used (L) ---
1 77 $3.00 Wizard 100% 1200 / 1225Gm ST - used (L) ---
1 77 $3.00 Tung-Sol 110% 1200 / 1225Gm ST - used (L) ---
1 77 / VT-77 $2.50 Raytheon 120% 1300 / 1225Gm ST - used (L) reglued cap
1 78 $12.00 Raytheon 125% 1800 / 1225Gm ST - used (wb) engraved base - four pillar tube - no label
1 78 $7.50 Raytheon 120% 1850 / 1225Gm ST - used (ob) engraved base - four pillar tube - no label - US Navy - loose cap - damaged box - CRP38078
1 78 $4.50 Philco 120% 1500 / 1405Gm ST - used (L) engraved base
1 78 $4.50 Philco 120% 1500 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Philco 120% 1450 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Philco 120% 1450 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Philco 115% 1500 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Philco 110% 1450 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Philco 115% 1450 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Philco 110% 1450 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Philco 125% 1500 / 1450Gm ST - used (L) engraved base
1 78 $4.50 National Union 110% 1550 / 1450Gm ST - used (L) engraved base
1 78 $4.50 National Union 110% 1450 / 1450Gm ST - used (L) engraved base
1 78 $4.50 National Union 120% 1450 / 1450Gm ST - used (L) engraved base
1 78 $4.50 RCA / Cunningham 110% 1450 / 1450Gm ST - used (L) engraved base
1 78 $4.50 RCA / Cunningham 125% 1550 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Raytheon 110% 1550 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Raytheon 110% 1500 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Raytheon 110% 1450 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Ken-Rad 135% 1500 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Ken-Rad 120% 1700 / 1450Gm ST - used (L) engraved base
1 78 $4.50 Ken-Rad 120% 1450 / 1450Gm ST - used (L) engraved base - black coat - cat:402-68
1 78 $4.50 Wards Super Airline 125% 1800 / 1450Gm ST - used (L) engraved base
1 78 $4.00 Cunningham 120% 1600 / 1225Gm ST - used (wb) ---
1 78 $4.00 Triad 140% 1600 / 1225Gm ST - used (rb) ---
1 78 $4.00 Philco 120% 1600 / 1450Gm ST - used (L) cat:401-519
1 78 $4.00 Philco 110% 1400 / 1450Gm ST - used (L) ---
1 78 $4.00 Philco 110% 1600 / 1450Gm ST - used (L) ---
1 78 $4.00 Philco 120% 1550 / 1450Gm ST - used (L) ---
1 78 $4.00 Philco 110% 1350 / 1450Gm ST - used (L) ---
1 78 $4.00 Philco 120% 1350 / 1450Gm ST - used (L) ---
1 78 $4.00 Philco 110% 1450 / 1450Gm ST - used (L) ---
1 78 $4.00 Philco 125% 1800 / 1450Gm ST - used (L) ---
1 78 $4.00 Sylvania 110% 1550 / 1450Gm ST - used (L) ---
1 78 $4.00 Sylvania 130% 1650 / 1450Gm ST - used (L) cat:312-227
1 78 $4.00 Sylvania 130% 1550 / 1450Gm ST - used (L) ---
1 78 $4.00 Sylvania 120% 1700 / 1455Gm ST - used (L) ---
1 78 $4.00 Sylvania 115% 1450 / 1450Gm ST - used (L) ---
1 78 $4.00 Sylvania 115% 1500 / 1450Gm ST - used (L) ---
1 78 $4.00 Sylvania 120% 1450 / 1450Gm ST - used (L) ---
1 78 $4.00 Sylvania 120% 1450 / 1450Gm ST - used (L) ---
1 78 $4.00 National Union 120% 1450 / 1425Gm ST - used (L) ---
1 78 $4.00 National Union 125% 1350 / 1450Gm ST - used (L) ---
1 78 $4.00 National Union 125% 1450 / 1425Gm ST - used (L) ---
1 78 $4.00 National Union 120% 1700 / 1425Gm ST - used (L) ---
1 78 $4.00 National Union 120% 1450 / 1425Gm ST - used (L) ---
1 78 $4.00 RCA 130% 1750 / 1450Gm ST - used (L) US Navy
1 78 $4.00 RCA 120% 1500 / 1450Gm ST - used (L) US Navy
1 78 $4.00 RCA 120% 1550 / 1450Gm ST - used (L) US Navy
1 78 $4.00 RCA 120% 1600 / 1450Gm ST - used (L) US Navy
1 78 $4.00 RCA 120% 1600 / 1450Gm ST - used (L) US Navy
1 78 $4.00 RCA 115% 1550 / 1450Gm ST - used (L) US Navy
1 78 $4.00 RCA 135% 1750 / 1450Gm ST - used (L) US Navy
1 78 $4.00 RCA 120% 1500 / 1450Gm ST - used (L) ---
1 78 $4.00 Zenith 120% 1550 / 1450Gm ST - used (L) ---
1 78 $4.00 Zenith 120% 1550 / 1450Gm ST - used (L) ---
1 78 $4.00 Ken-Rad 120% 1450 / 1450Gm ST - used (L) ---
1 78 $4.00 Tung-Sol 125% 1550 / 1450Gm ST - used (L) ---
1 78 $4.00 Tung-Sol 120% 1600 / 1450Gm ST - used (L) cat:312-230
1 78 $4.00 Tung-Sol 130% 1550 / 1450Gm ST - used (L) ---
1 78 $4.00 Marconi 120% 1500 / 1450Gm ST - used (L) cat:32-151
1 78 $4.00 Wards Super Airline 120% 1500 / 1450Gm ST - used (L) ---
1 78 $4.00 Wards Super Airline 120% 1450 / 1450Gm ST - used (L) cat:32-641
1 78 $4.00 Super Airline 110% 1600 / 1450Gm ST - used (L) ---
1 78 $4.00 GE 120% 1500 / 1450Gm ST - used (L) ---
1 78 $4.00 Ceco 120% 1500 / 1450Gm ST - used (L) ---
1 78 $3.50 Sylvania 100% 1350 / 1450Gm ST - used (L) ---
1 78 $3.50 Sylvania 100% 1250 / 1450Gm ST - used (L) ---
1 78 $3.50 Sylvania 100% 1300 / 1450Gm ST - used (L) engraved base - cat:401-469
1 78 $3.50 Philco 100% 1400 / 1450Gm ST - used (L) ---
1 78 $3.50 Philco 100% 1450 / 1450Gm ST - used (L) ---
1 78 $3.50 Philco 100% 1350 / 1450Gm ST - used (L) ---
1 78 $3.50 Philco 105% 1450 / 1450Gm ST - used (L) engraved base
1 78 $3.50 Philco 105% 1300 / 1450Gm ST - used (L) engraved base
1 78 $3.50 Philco 100% 1300 / 1450Gm ST - used (L) engraved base
1 78 $3.50 Philco 105% 1300 / 1450Gm ST - used (L) engraved base
1 78 $3.50 Philco 100% 1350 / 1450Gm ST - used (L) engraved base
1 78 $3.50 Philco 100% 1350 / 1450Gm ST - used (L) engraved base
1 78 $3.50 RCA / Cunningham 105% 1400 / 1450Gm ST - used (L) engraved base
1 78 $3.50 RCA Radiotron 100% 1250 / 1450Gm ST - used (L) engraved base
1 78 $3.50 RCA Radiotron 105% 1350 / 1450Gm ST - used (L) engraved base
1 78 $3.50 RCA 100% 1400 / 1450Gm ST - used (L) ---
1 78 $3.50 Tung-Sol 100% 1250 / 1450Gm ST - used (L) ---
1 78 $3.50 Tung-Sol 100% 1450 / 1450Gm ST - used (L) ---
1 78 $3.50 National Union 100% 1300 / 1450Gm ST - used (L) ---
1 78 $3.50 National Union 100% 1350 / 1450Gm ST - used (L) ---
1 78 $3.50 National Union 100% 1300 / 1450Gm ST - used (L) ---
1 78 $3.50 Raytheon 100% 1300 / 1450Gm ST - used (L) ---
1 78 $3.50 Delco 100% 1400 / 1450Gm ST - used (L) ---
1 78 $3.00 Philco 95% 1250 / 1450Gm ST - used (L) engraved base
1 78 $3.00 Philco 90% 1250 / 1450Gm ST - used (L) engraved base
1 78 $3.00 Philco 90% 1100 / 1450Gm ST - used (L) ---
1 78 $3.00 Tung-Sol 90% 1300 / 1450Gm ST - used (L) ---
1 78 $3.00 Tung-Sol 90% 1200 / 1450Gm ST - used (L) ---
1 78 $3.00 Tung-Sol 90% 1150 / 1450Gm ST - used (L) engraved base
1 78 $3.00 RCA 90% 1150 / 1450Gm ST - used (L) ---
1 78 $3.00 Triad 90% 1200 / 1450Gm ST - used (L) ---
1 78 $3.00 GE 90% 1350 / 1450Gm ST - used (L) ---
1 78 $3.00 Sylvania 95% 1350 / 1450Gm ST - used (L) ---
1 78 $3.00 Raytheon 90% 1250 / 1450Gm ST - used (L) engarved base
1 78 $3.00 National Union 90% 1350 / 1450Gm ST - used (L) ---
1 78 $3.00 National Union 95% 1200 / 1450Gm ST - used (L) ---
1 78 $3.00 National Union 90% 1300 / 1450Gm ST - used (L) ---
1 78 $3.00 National Union 90% 1100 / 1450Gm ST - used (L) ---
1 NU-78 $3.00 National Union 95% 1100 / 1450Gm ST - used (L) engraved base
1 NU-78 $3.00 National Union 95% 1250 / 1450Gm ST - used (L) engraved base
1 78 $2.50 Philco 85% 1550 / 1450Gm ST - used (L) engraved base
1 78 $2.50 Ceco 85% 1150 / 1450Gm ST - used (L) ---
1 78 $2.50 Raytheon 85% 1150 / 1450Gm ST - used (L) ---
1 78 $3.50 Wards Super Airline 120% 1500 / 1450Gm ST - used (L) engraved base - cracked base

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