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 | 34 | $15.00 | National Union | 130% | 1000 / 600Gm | ST - NOS (OB) | engraved base - bayonet pin on base |
| 1 | 34 / VT-54 | $10.00 | Ken-Rad | 110% | 1000 / 600Gm | ST - NOS (OB) | --- |
| 1 | 34 / VT-54 | $10.00 | Ken-Rad | 110% | 1050 / 600Gm | ST - NOS (OB) | US Army box - flap missing |
| 1 | 34 / VT-54 | $10.00 | Ken-Rad | 130% | 1100 / 600Gm | ST - NOS (ob) | JAN damaged box |
| 1 | 34 / VT-54 | $10.00 | Ken-Rad | 115% | 1050 / 600Gm | ST - NOS (wb) | JAN cat:401-486 |
| 1 | 34 / VT-54 | $10.00 | Sylvania | 125% | 900 / 600Gm | ST - NOS (wb) | --- |
| 1 | 34 | $8.00 | Majestic | 130% | 1000 / 600Gm | ST - NOS (ob) | engraved base - damaged box |
| 1 | 34 | $8.00 | RCA Radiotron | 110% | 1000 / 600Gm | ST - NOS (wb) | engraved base - cat: 401-489 |
| 1 | 34 | $8.00 | RCA / Cunningham | 120% | 1050 / 600Gm | ST - NOS (wb) | engraved base |
| 1 | 34 | $8.00 | Coronado | 120% | 1000 / 600Gm | ST - NOS (wb) | engraved base |
| 1 | 34 | $8.00 | Ken-Rad | 130% | 950 / 600Gm | ST - NOS (wb) | engraved base - cat:312-232 |
| 1 | 34 | $8.00 | Wards Super Airline | 120% | 1000 / 600Gm | ST - NOS (wb) | engraved base - cat:401-505 |
| 1 | 34 | $8.00 | Wards Super Airline | 110% | 1000 / 600Gm | ST - NOS (wb) | engraved base - cat:401-507 |
| 1 | 34 | $8.00 | Wards Super Airline | 130% | 1100 / 600Gm | ST - NOS (wb) | engraved base |
| 1 | 34 | $8.00 | Wards Super Airline | 120% | 1050 / 600Gm | ST - NOS (wb) | engraved base |
| 1 | 34 | $7.50 | Wards Super Airline | 120% | 1200 / 600Gm | ST - NOS (wb) | --- |
| 1 | 34 | $7.50 | Wards Super Airline | 140% | 1050 / 600Gm | ST - NOS (wb) | cat:312-244 |
| 1 | 34 | $7.50 | Super Airline | 125% | 1100 / 600Gm | ST - NOS (wb) | engraved base - cat:401-508 |
| 1 | 34 | $7.50 | National Union | 125% | 1100 / 600Gm | ST - NOS (OB) | --- |
| 1 | 34 | $7.50 | National Union | 130% | 1150 / 600Gm | ST - NOS (rb) | --- |
| 1 | 34 | $7.50 | RCA Victor | 120% | 1100 / 600Gm | ST - NOS (OB) | --- |
| 1 | 34 | $7.50 | RCA | 125% | 1100 / 600Gm | ST - NOS (ob) | --- |
| 1 | 34 | $7.50 | RCA | 110% | 1000 / 600Gm | ST - NOS (ob) | --- |
| 1 | 34 | $7.50 | RCA | 125% | 1050 / 600Gm | ST - NOS (OB) | sealed in box |
| 1 | 34 | $7.50 | RCA | 120% | 950 / 600Gm | ST - NOS (wb) | --- |
| 1 | 34 | $7.50 | RCA | 130% | 1150 / 600Gm | ST - NOS (wb) | US Navy - solid plate - cat:401-434 |
| 1 | 34 | $7.50 | GE | 120% | 1100 / 600Gm | ST - NOS (wb) | cat:32-91 |
| 1 | 34 | $7.50 | Ken-Rad | 115% | 950 / 600Gm | ST - NOS (wb) | --- |
| 1 | 34 / VT-54 | $5.00 | Ken-Rad | 100% | 900 / 600Gm | ST - used (wb) | cat:401-506 |
| 1 | 34 / VT-54 | $5.00 | Ken-Rad | 120% | 1050 / 600Gm | ST - used (rb) | JAN |
| 1 | 34 | $4.00 | RCA Radiotron | 115% | 1000 / 600Gm | ST - used (rb) | engraved base |
| 1 | 34 | $4.00 | National Union | 140% | 1200 / 600Gm | ST - used (rb) | engraved base - bayonet pin on base - paint on tube |
| 1 | 34 | $4.00 | Philco | 120% | 1100 / 600Gm | ST - used (rb) | engraved base |
| 1 | 34 | $4.00 | RCA / Cunningham | 115% | 1100 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $4.00 | Super Airline | 120% | 1000 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $4.00 | Wards Super Airline | 80% | 550 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $4.00 | Wards Super Airline | 140% | 1000 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $4.00 | RCA / Cunningham | 110% | 110% | 800 / 600Gm | ST - used (L) |
| 1 | 34 | $4.00 | RCA / Cunningham | 100% | 750 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $4.00 | RCA / Cunningham | 110% | 900 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $4.00 | RCA / Cunningham | 120% | 1000 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $4.00 | National Union | 120% | 1000 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $3.00 | Wards Super Airline | 130% | 1250 / 600Gm | ST - used (rb) | --- |
| 1 | 34 | $3.00 | unknown | 130% | 1150 / 600Gm | ST - used (rb) | --- |
| 1 | 34 | $3.00 | Delco | 120% | 1050 / 600Gm | ST - used (L) | --- |
| 1 | 34 | $3.00 | RCA | 120% | 1000 / 600Gm | ST - used (L) | cat:312-246 |
| 1 | 34 | $3.00 | RCA | 130% | 950 / 600Gm | ST - used (L) | --- |
| 1 | 34 | $3.00 | RCA | 130% | 800 / 600Gm | ST - used (L) | solid plate - US Navy - cat:401-472 |
| 1 | 34 | $3.00 | RCA Radiotron | 110% | 1000 / 600Gm | ST - used (L) | --- |
| 1 | 34 | $3.00 | Wards Super Airline | 120% | 1050 / 600Gm | ST - used (L) | --- |
| 1 | 34 | $3.00 | Wards Super Airline | 110% | 1150 / 600Gm | ST - used (L) | --- |
| 1 | 34 | $3.00 | Cornado | 110% | 950 / 600Gm | used (L) | --- |
| 1 | 34 | $3.00 | Super Air Castle | 110% | 900 / 600Gm | ST - used (L) | --- |
| 1 | 34 | $3.00 | Ken-Rad | 120% | 1000 / 600Gm | ST - used (L) | cat:401-466 |
| 1 | 34 | $3.00 | Ken-Rad | 130% | 1000 / 600Gm | ST - used (L) | cat:401-517 |
| 1 | 34 | $3.00 | Ken-Rad | 110% | 750 / 600Gm | ST - used (L) | engraved base - cat:312-149 |
| 1 | 34 | $3.00 | Sylvania | 120% | 850 / 600Gm | ST - used (L) | engraved base - cat: 312-229 |
| 1 | 34 | $3.00 | Sylvania | 105% | 600 / 600Gm | ST - used (L) | engraved base - cat: 312-141 |
| 1 | 34 | $2.00 | Wards Super Airline | 90% | 500 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $2.00 | RCA / Cunningham | 85% | 500 / 600Gm | ST - used (L) | engraved base |
| 1 | 34 | $2.00 | Sylvania | 85% | 850 / 600Gm | 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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Preoctal and Globe/Balloon Vacuum Tube List
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Discount Bargain Packs
and
Bargain Bin Tubes
for more savings!
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