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 2X2 / VT-119 $2.00 National Union 110% -- ST - NOS (OB) JAN - damaged box
1 2X2 / 879 / VT-119 $2.50 National Union 110% -- ST - NOS (OB) for Panoramic Radio
1 2X2 / 879 / VT-119 $2.50 National Union 110% -- ST - NOS (OB) for Triumph Mfg
1 2X2 / 879 / VT-119 $2.50 RCA 140% -- ST - NOS (OB) JAN for GE
1 2X2 / 879 $2.50 Ken-Rad 130% -- ST - NOS (OB) JAN - cat:402-427
1 2X2 / 879 / VT119 $2.50 Ken-Rad 130% -- ST - NOS (OB) JAN - box flap missing
1 2X2 / VT-119 $2.50 RCA 110% -- ST - NOS (OB) US Army - oem box
1 2X2 / 879 $2.50 RCA 120% -- ST - NOS (OB) US Navy
1 2X2 / 879 $2.50 RCA 120% -- ST - NOS (OB) US Navy
1 2X2 / 879 / VT-119 $2.50 National Union 115% -- ST - NOS (wb) JAN
1 2X2 / 879 / VT-119 $2.50 National Union 100% -- ST - NOS (wb) JAN
1 2X2A $3.00 Sylvania 110% -- ST - NOS (OB) damaged box
1 2X2A $3.00 Raytheon 120% -- ST - NOS (wb) --
1 2X2A $3.00 National Union 100% -- ST - NOS (OB) JAN - for Radio Receptor
1 2X2A $3.00 RCA 110% -- ST - NOS (OB) JAN
1 2X2A $3.00 RCA 110% -- ST - NOS (OB) JAN
1 2X2A $3.00 RCA 110% -- ST - NOS (OB) JAN
1 2X2A $3.00 RCA 110% -- ST - NOS (OB) JAN
1 2X2A $3.00 RCA 120% -- ST - NOS (OB) JAN
1 2X2A $3.00 RCA 120% -- ST - NOS (OB) JAN
1 2X2A $3.00 RCA 120% -- ST - NOS (OB) JAN
1 2X2A $3.00 RCA 120% -- ST - NOS (OB) cat:402-110
1 2X2A $3.00 GE 120% -- ST - NOS (OB) cat:403-37
1 2X2A $3.00 GE 110% -- ST - NOS (OB) cat:401-562
1 2X2A $3.00 GE 110% -- ST - NOS (OB) --
1 2X2A $3.00 GE 130% -- ST - NOS (wb) cat:403-317
1 2X2A $3.00 Sylvania 120% -- ST - NOS (OB) --
1 2X2A $3.00 Raytheon 110% -- ST - NOS (wb) --
1 2X2A $3.00 National Union 100% -- ST - NOS (wb) --
1 2X2A / VT119 $3.00 National Union 100% -- ST - NOS (wb) JAN
1 2X2A / VT119 $3.00 National Union 100% -- ST - NOS (wb) JAN
1 6A3 $45.00 National Union 110% 3500 / 3000Gm ST - used (wb) ---
1 6A4 / LA $20.00 Raytheon 100% 2150 / 2000Gm ST - used (rb) four pillar tube - engraved base
1 6A4 / LA $20.00 Raytheon 100% 2200 / 2000Gm ST - used (wb) four pillar tube - engraved base
1 6A4 / LA $10.00 Raytheon 60% 1500 / 2000Gm ST - used (wb) four pillar tube - engraved base
1 6A4 / LA $12.00 Philco 130% 2800 / 2000Gm ST - NOS (OB) sealed in box
1 6A4 / LA $12.00 Philco 120% 2650 / 2000Gm ST - NOS (OB) engraved base box - flap torn
1 6A4 / LA $12.00 Philco 120% 2800 / 2000Gm ST - NOS (wb) --
1 6A4 / LA $12.00 Tung-Sol 120% 2800 / 2000Gm ST - NOS (OB) sealed in box - damaged box
1 6B5 $18.00 Zenith 110% / 120% 1800 / 1300Gm ST - NOS (OB) loose glass particle inside bulb
1 6B5 $19.00 GE 100% / 100% 1500 / 1300Gm ST - NOS (OB) damaged box
1 6B5 $29.00 Raytheon 90% / 100% 1400 / 1300Gm ST - used (wb) four pillar tube - engraved base
1 6B5 $7.50 Triad 100% / 110% 1650 / 1300Gm ST - used (L) engraved base
1 6B5 $8.00 National Union 130% / 90% 1650 / 1300Gm ST - sed (L) --
1 6B5 $6.00 Ken-Rad 100% / 70% 1650 / 1300Gm ST - used (L) engraved base
1 6B5 $7.00 GE 90% / 95% 1600 / 1300Gm ST - used (L) --
1 6B5 $6.25 Crosley by Ken-Rad 90% / 85% 1500 / 1300Gm ST - used (L) engraved base
1 6C7 $12.00 National Union 120%: diodes 120% / 120% 1550 / 1250Gm ST - NOS (wb) metal shield
1 6C7 $12.00 National Union 120%: diodes 120% / 120% 1550 / 1250Gm ST - NOS (OB) metal shield
1 6C7 $8.00 Majestic 120%: diodes 110% / 120% 1450 / 1250Gm ST - used (L) engraved base - paint shield
1 6C7 $8.00 Majestic 130%: diodes 100% / 120% 1700 / 1250Gm ST - used (rb) engraved base - paint shield
1 6E6 $25.00 National Union 110% / 110% 1750: 1750 / 1400Gm ST - NOS (OB) black ribbed plates - engraved base - torn box flap
1 6E6 $25.00 GE untested heater ok ST - NOS (OB) sealed in box
1 6E6 $15.00 Hytron 110% / 110% 1600 / 1600Gm ST - used (wb) --
1 6E6 $15.00 National Union 100% / 100% 1500: 1500 / 1400Gm ST - used (OB) box flap missing
1 6E7 $10.00 National Union 110% -- ST - NOS (OB) metal shield - box flap missing
1 6E7 $5.00 Majestic 100% -- ST - used (rb) engraved base - paint shield
1 6E7 $5.00 Majestic 100% -- ST - used (L) engraved base - paint shield
1 6E7 $4.00 unkown (National Union?) 120% 2100 / 1500Gm ST - used (L) shield missing
1 6E7 $4.00 unkown (National Union?) 120% 1800 / 1500Gm ST - used (L) shield missing

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