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
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| 1 | 6F7 | $20.00 | Ken-Rad | 110% / 140% | --- | ST - NOS (OB) | (H) In original Ken-Rad commercial box - engraved base - Pictures |
| 1 | 6F7 | $20.00 | Ken-Rad | 110% / 110% | 1000 / 700 : 400 / 315Gm | ST - NOS (OB) | (H) In original Ken-Rad commercial box - engraved base |
| 1 | 6F7 | $20.00 | Ken-Rad | 110% / 110% | 1050 / 700 : 450 / 315Gm | ST - NOS (OB) | (H) In original Ken-Rad commercial box - engraved base |
| 1 | 6F7 | $15.00 | Raytheon | 100% / 120% | 1000 / 700:500 / 315Gm | ST - used (wb) | (H) four pillar tube - engraved base |
| 1 | 6F7 | $10.00 | Raytheon | 100% / 100% | 1100 / 700:400 / 315Gm | ST - used (wb) | (H) four pillar tube - engraved base - dirty label - reglued cap |
| 1 | 6F7 / VT-70 | $5.00 | RCA | 100% / 110% | 950 / 700:400 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | RCA | 110% / 120% | 1000 / 700:450 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | RCA | 110% / 110% | 1050 / 700:400 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | Ken-Rad | 100% / 120% | 900 / 700:450 / 315Gm | ST - NOS (wb) | (H) |
| 1 | 6F7 / VT-70 | $5.00 | Ken-Rad | 110% / 110% | 1050 / 700:450 / 315Gm | ST - NOS (ob) | (H) US Navy |
| 1 | 6F7 / VT-70 | $5.00 | Ken-Rad | 110% / 110% | 1100 / 700:400 / 315Gm | ST - NOS (wb) | (H) JAN |
| 1 | 6F7 / VT-70 | $5.00 | Ken-Rad | 100% / 110% | 1100 / 700:450 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | Ken-Rad | 100% / 100% | 1150 / 700:400 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | Ken-Rad | 100% / 110% | 1150 / 700:450 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | Sylvania | 120% / 120% | 1150 / 700:550 / 315Gm | ST - NOS (OB) | (H) US Army - damaged box |
| 1 | 6F7 / VT-70 | $5.00 | Sylvania | 120% / 130% | 1100 / 700:600 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | Sylvania | 130% / 120% | 1250 / 700:600 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | Sylvania | 110% / 120% | 1150 / 700:500 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | Sylvania | 110% / 120% | 1150 / 700:550 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | Sylvania | 110% / 130% | 1350 / 700:600 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 / VT-70 | $5.00 | Sylvania | 110% / 110% | 1150 / 700:500 / 315Gm | ST - NOS (OB) | (H) US Army |
| 1 | 6F7 | $5.00 | RCA | 100% / 100% | 1000 / 700:400 / 315Gm | ST - NOS (ob) | (H) |
| 1 | 6F7 | $5.00 | RCA | 110% / 120% | 1200 / 700:450 / 315Gm | ST - NOS (OB) | (H) oem box |
| 1 | 6F7 | $5.00 | GE | 110% / 120% | 1100 / 700:500 / 315Gm | ST - NOS (OB) | (H) |
| 1 | 6F7 | $5.00 | Zenith | 110% / 110% | 1250 / 700:400 / 315Gm | ST - NOS (OB) | (H) |
| 1 | 6F7 | $5.00 | Raytheon | 100% / 120% | 950 / 700:500 / 315Gm | ST - NOS (OB) | (H) |
| 1 | 6F7 | $5.00 | Raytheon | 110% / 130% | 1200 / 700:500 / 315Gm | ST - NOS (OB) | (H) sealed in box - cat:401-4-1 |
| 1 | 6F7 | $5.00 | Raytheon | 120% / 120% | 1300 / 700:450 / 315Gm | ST - NOS (OB) | (H) sealed in box - cat:401-4-2 |
| 1 | 6F7 | $5.00 | Tung-Sol | 120% / 120% | 1100 / 700:400 / 315Gm | ST - NOS (OB) | (H) |
| 1 | 6F7 | $5.00 | Tung-Sol | 100% / 110% | 1000 / 700:400 / 315Gm | ST - NOS (OB) | (H) |
| 1 | 6F7 | $5.00 | Philco | 100% / 100% | 1150 / 700:400 / 315Gm | ST - NOS (OB) | (H) |
| 1 | NU-6F7 | $4.00 | National Union | 100% / 120% | 1100 / 700:600 / 315Gm | ST - used (L) | (H) engraved base |
| 1 | NU-6F7 | $4.00 | National Union | 100% / 110% | 1100 / 700:500 / 315Gm | ST - used (L) | (H) engraved base |
| 1 | NU-6F7 | $4.00 | National Union | 90% / 120% | 1100 / 700:550 / 315Gm | ST - used (L) | (H) engraved base |
| 1 | 6F7 / VT-70 | $4.00 | Ken-Rad | 110% / 110% | 1150 / 700:450 / 315Gm | ST - used (L) | (H) JAN |
| 1 | 6F7 / VT-70 | $4.00 | Ken-Rad | 110% / 120% | 1100 / 700:500 / 315Gm | ST - used (L) | (H) JAN |
| 1 | 6F7 | $3.00 | Sylvania | 100% / 120% | 1050 / 700:500 / 315Gm | ST - used (ob) | (H) |
| 1 | 6F7 | $3.00 | Raytheon | 110% / 110% | 1200 / 700:400 / 315Gm | ST - used (rb) | (H) |
| 1 | 6F7 | $3.00 | RCA | 100% / 120% | 1100 / 700:450 / 315Gm | ST - used (L) | (H) |
| 1 | 6F7 | $3.00 | Crosley by Ken-Rad | 110% / 120% | 1150 / 700:500 / 315Gm | ST - used (L) | (H) engraved base |
| 1 | 6F7 | $3.00 | Wards Super Airline | 100% / 130% | 1100 / 700:600 / 315Gm | ST - used (L) | (H) |
| 1 | 6F7 | $3.00 | Sylvania | 110% / 100% | 1100 / 700:500 / 315Gm | ST - used (L) | (H) leaky (2Mohm) |
| 1 | 6F7 | $2.00 | Raytheon | 90% / 110% | 1000 / 700:450 / 315Gm | ST - used (ob) | (H) |
| 1 | 6F7 | $2.00 | RCA | 90% / 90% | 1000 / 700:350 / 315Gm | ST - used (rb) | (H) engraved base |
| 1 | 6F7 | $2.00 | RCA | 90% / 110% | 1000 / 700:450 / 315Gm | ST - used (ob) | (H) |
| 1 | 6F7 | $2.00 | RCA | 90% / 110% | 1000 / 700:450 / 315Gm | ST - used (L) | (H) engaved base |
| 1 | 6F7 | $2.00 | RCA / Cunningham | 90% / 100% | 1000 / 700:450 / 315Gm | ST - used (L) | (H) engraved base |
| 1 | 6F7 | $2.00 | RCA / Cunningham | 100% / 90% | 1100 / 700:350 / 315Gm | ST - used (L) | (H) engraved base |
| 1 | 6F7 | $2.00 | RCA / Cunningham | 100% / 90% | 1150 / 700:350 / 315Gm | ST - used (L) | (H) engraved base |
| 1 | 6F7 | $2.00 | Ken-Rad | 90% / 110% | 1100 / 700:450 / 315Gm | ST - used (L) | (H) engaved base |
| 1 | 6F7 | $2.00 | Wards Super Airline | 90% / 100% | 1100 / 700:400 / 315Gm | ST - used (L) | (H) engraved base |
| 1 | 6F7 | $2.00 | Crosley by Ken-Rad | 100% / 140% | 1150 / 700:550 / 315Gm | ST - used (L) | (H) engraved base - paint on tube |
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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Preoctal and Globe/Balloon Vacuum Tube List
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