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 6C6 $20.00 Raytheon 120% 1400 / 1225Gm ST - NOS (wb) four pillar tube - engraved base
1 6C6 $15.00 Raytheon 120% 1300 / 1225Gm ST - used (rb) four pillar tube - engraved base - cat:312-41
1 6C6 $7.50 National Union 140% 1550 / 1225Gm ST - NOS (OB) engraved base - missing box flap
1 6C6 $7.50 Tung-Sol 140% 1500 / 1225Gm ST - NOS (wb) --
1 6C6 $7.50 RCA / Cunningham 140% 1550 / 1225Gm ST - NOS (wb) engraved base
1 6C6 $7.50 RCA / Cunningham 120% 1350 / 1225Gm ST - NOS (wb) engraved base
1 6C6 $7.50 RCA 115% 1350 / 1225Gm ST - NOS (wb) JAN
1 6C6 $4.00 Tung-Sol 140% 1500 / 1225Gm ST - used (wb) --
1 6C6 $4.00 National Union 120% 1450 / 1225Gm ST - used (ob) cat:312-171
1 6C6 $4.00 Tung-Sol 120% 1500 / 1225Gm ST - used (ob) --
1 6C6 $4.00 Raytheon 130% 1400 / 1225Gm ST - used (rb) --
1 6C6 $4.00 Delco 120% 1300 / 1225Gm ST - used (rb) cat:32-451
1 6C6 $4.00 GE 120% 1300 / 1225Gm ST - used (rb) --
1 6C6 $4.00 Ken-Rad 120% 1300 / 1225Gm ST - used (rb) --
1 6C6 $4.00 Hytron 125% 1400 / 1225Gm ST - used (rb) --
1 6C6 $4.00 Hytron 130% 1550 / 1225Gm ST - used (rb) engraved base
1 6C6 $4.00 Triad 135% 1500 / 1225Gm ST - used (rb) engraved base
1 6C6 $4.00 Sylvania 100% 1200 / 1225Gm ST - used (L) green lettering
1 6C6 $4.00 Philco 110% 1400 / 1225Gm ST - used (L) engraved base
1 6C6 $4.00 Tung-Sol 120% 1400 / 1225Gm ST - used (L) ---
1 6C6 $2.00 National Union 90% 750 / 1225Gm ST - used (L) engraved base
1 6D6 $15.00 Raytheon 110% 2000 / 1600Gm ST - used (wb) four pillar tube - engraved base
1 6D6 $7.50 Raytheon 110% 2100 / 1600Gm ST - used leaky (rb) four pillar tube - engraved base - has label - loose cap
1 6D6 / VT-69 $7.50 RCA 115% 2100 / 1600Gm ST - NOS (wb) JAN
1 6D6 $7.50 RCA 120% 2200 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 120% 2200 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 120% 2200 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 120% 2200 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 115% 2200 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 115% 2100 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 115% 2000 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 110% 1900 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 110% 2000 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 110% 1950 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 110% 2050 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 110% 2100 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 110% 2150 / 1600Gm ST - NOS (OB) CRC military
1 6D6 $7.50 RCA 115% 2200 / 1600Gm ST - NOS (OB) --
1 6D6 $7.50 RCA 110% 2050 / 1600Gm ST - NOS (OB) --
1 6D6 $7.50 RCA / Cunningham 110% 2000 / 1600Gm ST - NOS (wb) engraved base
1 6D6 $7.50 RCA / Cunningham 120% 2150 / 1600Gm ST - NOS (wb) engraved base
1 6D6 $7.50 Sylvania 120% 2100 / 1600Gm ST - NOS (OB) --
1 6D6 $7.50 Sylvania 110% 2050 / 1600Gm ST - NOS (wb) --
1 6D6 $7.50 Sylvania 115% 2000 / 1600Gm ST - NOS (OB) --
1 6D6 $7.50 Tung-Sol 110% 2000 / 1600Gm ST - NOS (OB) --
1 6D6 $7.50 Ken-Rad 120% 2200 / 1600Gm ST - NOS (OB) US Navy - sealed in box
1 6D6 $7.50 Ken-Rad 100% 1850 / 1600Gm ST - NOS (OB) US Navy - sealed in box
1 6D6 $7.50 Ken-Rad 110% 2100 / 1600Gm ST - NOS (OB) US Navy
1 6D6 $7.50 Ken-Rad 125% 2400 / 1600Gm ST - NOS (OB) US Navy - sealed in box
1 6D6 $7.50 Ken-Rad 110% 1950 / 1600Gm ST - NOS (wb) --
1 6D6 $7.50 Ken-Rad 110% 1950 / 1600Gm ST - NOS (wb) --
1 6D6 $7.50 Ken-Rad 110% 1950 / 1600Gm ST - NOS (wb) --
1 6D6 $7.50 Ken-Rad 110% 1900 / 1600Gm ST - NOS (wb) --
1 6D6 $7.50 Ken-Rad 110% 1900 / 1600Gm ST - NOS (wb) --
1 6D6 $7.50 Ken-Rad 110% 1850 / 1600Gm ST - NOS (wb) --
1 6D6 $7.50 Ken-Rad 110% 2000 / 1600Gm ST - NOS (wb) --
1 6D6 $7.50 Ken-Rad 110% 1950 / 1600Gm ST - NOS (OB) --
1 6D6 $7.50 Ken-Rad 110% 2150 / 1600Gm ST - NOS (OB) sealed in box - cat:312-376
1 6D6 $7.50 Ken-Rad 115% 2000 / 1600Gm ST - NOS (OB) sealed in box - cat:312-363
1 6D6 $7.50 Unknown 110% 2450 / 1600Gm ST - NOS (OB) US Navy
1 6D6 $7.50 National Union 110% 2000 / 1600Gm ST - NOS (wb) --
1 6D6 $7.50 National Union 130% 2500 / 1600Gm ST - NOS (wb) engraved base
1 6D6 $7.50 National Union untested untested ST - NOS (OB) sealed in box
1 6D6 $7.50 Super Silvertone 110% 2200 / 1600Gm ST - NOS (OB) --
1 6D6 $7.50 Delta 130% 2250 / 1600Gm ST - NOS (wb) --
1 6D6 $4.00 Raytheon 125% 2400 / 1600Gm ST - used (wb) engraved base
1 6D6 $4.00 Arcturus 110% 2000 / 1600Gm ST - used (wb) --
1 6D6 $4.00 RCA 110% 1900 / 1600Gm ST - used (ob) US Navy
1 6D6 $4.00 RCA 110% 2000 / 1600Gm ST - used (ob) US Navy
1 6D6 $4.00 Sylvania 120% 2150 / 1600Gm ST - used (ob) cat:401-206
1 6D6 $4.00 Arcturus 120% 1900 / 1600Gm ST - used (L) engraved base
1 6D6 $4.00 Westinghouse 130% 2100 / 1600Gm ST - used (L) ---
1 6D6 $4.00 RCA 115% 1800 / 1600Gm ST - used (L) ---
1 6D6 $4.00 Tung-Sol 110% 1700 / 1600Gm ST - used (L) ---
1 6D6 $4.00 Tung-Sol 115% 1900 / 1600Gm 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