MDB Ventures Radio Loktal Tubes

MDB Ventures Home

Don't forget to visit our
Discount Bargain Packs
and
Bargain Bin
for more savings!

Also Be sure to see our
Audio tube listings
and
Large Radio Vacuum Tube List
and
"G" Style Radio Vacuum Tube List
for more audio and rectifier tubes.

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.

Loktal tubes were designed by Sylvania in 1938 for mobile radio use. The proper name is "Loktal" although the name is sometimes misspelled as "loctal" since "Loktal" doesn't look like the right spelling. The tubes "lock" into the socket via a spring clamp around the locator pin.

Often the tubes will have a black coating on the pins. This is not as bad as it seems. The pins are coated with silver to provide a better contact, but silver oxidizes with age which is the cause of the black color. Silver oxide is still conductive, although not as conductive as unoxidized silver.

MDB Ventures Loktal Radio Tubes
Qty
Avail 		Tube
Type 		Price
Each 		Tube
Brand 		Emission
Strength 		Mutual
Conduct
Desc
Notes
1 14C7 $2.00 Sylvania 130% 1500 / 1300Gm NOS (OB) Loktal - green lettering
1 14C7 $2.00 Sylvania 130% 1700 / 1300Gm NOS (OB) Loktal - green lettering
1 14C7 $2.00 Sylvania 130% 1600 / 1300Gm NOS (OB) Loktal - green lettering
1 14C7 $2.00 Sylvania 140% 1500 / 1300Gm NOS (OB) Loktal - green lettering
1 14C7 $2.00 Sylvania 120% 1500 / 1300Gm NOS (OB) Loktal - green lettering
1 14C7 $2.00 RCA 120% 1600 / 1300Gm NOS (OB) Loktal - red lettering
1 14C7 $2.00 RCA 130% 1700 / 1300Gm NOS (OB) Loktal - silver lettering
1 14C7 $2.00 RCA 130% 1800 / 1300Gm NOS (OB) Loktal - silver lettering
1 14C7 $2.00 Raytheon 130% 1700 / 1300Gm NOS (OB) Loktal
1 14C7 $2.00 Dumont 130% 1700 / 1300Gm NOS (OB) Loktal
1 14C7 $2.00 CBS / Hytron 130% 1600 / 1300Gm NOS (OB) Loktal
1 14C7 $2.00 National Union 140% 1700 / 1300Gm NOS (OB) Loktal
1 14C7 $2.00 National Union 130% 1600 / 1300Gm NOS (OB) Loktal
1 14C7 $1.00 Sylvania 130% 1800 / 1300Gm used (rb) Loktal - green lettering
1 14C7 $1.00 Zenith 120% 1600 / 1300Gm used (rb) Loktal
1 14C7 $1.00 unknown 110% 1300 / 1300Gm used (rb) Loktal
1 14C7 $0.50 Zenith 100% 900 / 1300Gm used (rb) Loktal
1 1280 $10.00 Sylvania 140% 1900 / 1300Gm NOS (OB) Loktal - yellow lettering - non-microphonic 14C7
1 1280 $10.00 Sylvania 140% 1900 / 1300Gm NOS (OB) Loktal - yellow lettering - non-microphonic 14C7
1 1280 $10.00 Sylvania 140% 1800 / 1300Gm NOS (OB) Loktal - green lettering - non-microphonic 14C7
1 1280 $10.00 Sylvania 140% 1800 / 1300Gm NOS (OB) Loktal - green lettering - non-microphonic 14C7
1 1280 $10.00 Sylvania 140% 1800 / 1300Gm NOS (wb) Loktal - green lettering - non-microphonic 14C7
1 1280 $5.00 Sylvania 110% 1300 / 1300Gm used (rb) Loktal - green lettering - non-microphonic 14C7
1 14H7 $3.00 Sylvania 120% 4600 / 3000Gm NOS (OB) Loktal - green lettering
1 14H7 $3.00 Sylvania 120% 4500 / 3000Gm NOS (OB) Loktal - green lettering
1 14H7 $3.00 Sylvania 120% 4200 / 3000Gm NOS (OB) Loktal - green lettering
1 14H7 $3.00 Sylvania 120% 4600 / 3000Gm NOS (OB) Loktal - green lettering
1 14H7 $3.00 Sylvania 120% 4300 / 3000Gm NOS (OB) Loktal - green lettering - damaged box
1 14H7 $3.00 RCA 110% 4500 / 3000Gm NOS (OB) Loktal - silver lettering
1 14H7 $3.00 Raytheon 100% 3600 / 3000Gm NOS (OB) Loktal
1 14H7 $3.00 Raytheon 120% 4500 / 3000Gm NOS (OB) Loktal - sealed in box
1 14H7 $3.00 Silvertone 120% 4500 / 3000Gm NOS (OB) Loktal
1 14H7 $3.00 Tung-Sol 120% 4400 / 3000Gm NOS (OB) Loktal
1 14H7 $3.00 National Union 120% 4500 / 3000Gm NOS (OB) Loktal
1 14H7 $3.00 Radiocoin 120% 4600 / 3000Gm NOS (OB) Loktal
1 14H7 $3.00 Radiocoin 120% 4600 / 3000Gm NOS (OB) Loktal
1 14H7 $3.00 Radiocoin 120% 4200 / 3000Gm NOS (OB) Loktal
1 14H7 $3.00 Radiocoin 120% 4500 / 3000Gm NOS (OB) Loktal
1 14H7 $3.00 Radiocoin 130% 4600 / 3000Gm NOS (OB) Loktal
1 14H7 $1.50 RCA 120% 4500 / 3000Gm used (rb) Loktal
1 14H7 $1.50 National Union 120% 4500 / 3000Gm used (rb) Loktal
1 14H7 $1.00 unknown 100% 4000 / 3000Gm used (rb) Loktal
1 14H7 $0.50 National Union 100% 3000 / 3000Gm used (rb) Loktal
1 14J7 $2.00 Sylvania 130% / 130% 1200 / 800:2000 / 1000Gm NOS (OB) Loktal - green lettering - JAN
1 14J7 $2.00 Sylvania 140% / 130% 1200 / 800:1800 / 1000Gm NOS (OB) Loktal - green lettering - JAN
1 14J7 $2.00 Sylvania 120% / 120% 1200 / 800:1800 / 1000Gm NOS (OB) Loktal - green lettering - JAN
1 14J7 $2.00 Sylvania 130% / 120% 1200 / 800:1800 / 1000Gm NOS (OB) Loktal - green lettering - JAN
1 14J7 $2.00 Sylvania 120% / 140% 1100 / 800:1900 / 1000Gm NOS (OB) Loktal - green lettering - US Navy
1 14J7 $2.00 Sylvania 130% / 140% 1300 / 800:2000 / 1000Gm NOS (OB) Loktal - green lettering - JAN
1 14J7 $2.00 Sylvania 130% / 120% 1200 / 800:1700 / 1000Gm NOS (OB) Loktal - green lettering - JAN
1 14J7 $2.00 Sylvania 120% / 130% 1250 / 800:1600 / 1000Gm NOS (OB) Loktal - green lettering - US Navy
1 14J7 $2.00 National Union 120% / 120% 1100 / 800:1800 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 National Union 120% / 120% 1100 / 800:1800 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 National Union 120% / 120% 1100 / 800:1800 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 National Union 110% / 130% 1100 / 800:1800 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 National Union 110% / 130% 1000 / 800:1600 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 National Union 120% / 140% 1200 / 800:2100 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 National Union 110% / 120% 1200 / 800:1900 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 National Union 110% / 120% 1100 / 800:2000 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 National Union 130% / 140% 1200 / 800:2000 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 National Union 110% / 130% 1100 / 800:2000 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 Sylvania 120% / 130% 1100 / 800:1900 / 1000Gm NOS (OB) Loktal - green lettering
1 14J7 $2.00 Sylvania 130% / 120% 1100 / 800:1700 / 1000Gm NOS (OB) Loktal - green lettering
1 14J7 $2.00 Sylvania 120% / 110% 1200 / 800:1600 / 1000Gm NOS (OB) Loktal - green lettering
1 14J7 $2.00 Zenith 120% / 120% 1100 / 800:700 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 Raytheon 120% / 130% 1100 / 800:1800 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 RCA Victor 130% / 110% 1200 / 800:1600 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 Cunningham 140% / 120% 1200 / 800:1700 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 Philco 120% / 130% 1100 / 800:1900 / 1000Gm NOS (OB) Loktal
1 14J7 $2.00 Hytron untested sealed in box NOS (OB) Loktal - Bantam tube
1 14J7 $1.00 Sylvania 120% / 100% 1200 / 800:1200 / 1000Gm used (rb) Loktal - green lettering
1 14Q7 $1.00 Sylvania 130% / 110% 800 / 500:1700 / 800Gm used (rb) Loktal - green lettering
1 14Q7 $1.00 Sylvania 120% / 100% 1000 / 500:1800 / 800Gm used (rb) Loktal - green lettering
1 14Q7 $1.00 Sylvania 90% / 110% 800 / 500:1100 / 800Gm used (rb) Loktal - green lettering
1 14Q7 $1.00 Silvertone 100% / 90% 900 / 500:1100 / 800Gm used (rb) Loktal
1 14Q7 $1.00 Emerson 110% / 110% 1300 / 500:1500 / 800Gm used (rb) Loktal
1 14Q7 $0.50 Sylvania 90% / 110% 800 / 500:1100 / 800Gm used (rb) Loktal - green lettering
1 14Q7 $0.50 Silvertone 100% / 90% 900 / 500:1100 / 800Gm used (rb) Loktal
1 14Q7 $0.50 unknown 120% / 120% 900 / 500:1500 / 800Gm used (rb) Loktal
1 14R7 $3.00 RCA 130% diodes: 110% / 110% 3000 / 2500Gm NOS (OB) Loktal - red lettering
1 14R7 $3.00 RCA 110% diodes: 120% / 110% 3100 / 2500Gm NOS (OB) Loktal - red lettering
1 14R7 $3.00 RCA 120% diodes: 120% / 120% 2800 / 2500Gm NOS (OB) Loktal - silver lettering
1 14R7 $3.00 Tung-Sol 130% diodes: 110% / 110% 3000 / 2500Gm NOS (OB) Loktal
1 14R7 $3.00 Tung-Sol 130% diodes: 110% / 110% 3600 / 2500Gm NOS (OB) Loktal
1 14R7 $3.00 Philco 140% diodes: 120% / 120% 3500 / 2500Gm NOS (OB) Loktal
1 14R7 $3.00 Philco 140% diodes: 110% / 110% 3800 / 2500Gm NOS (OB) Loktal
1 14R7 $3.00 Raytheon 140% diodes: 110% / 110% 3600 / 2500Gm NOS (OB) Loktal
1 14R7 $3.00 Raytheon 130% diodes: 110% / 110% 3500 / 2500Gm NOS (OB) Loktal
1 14R7 $3.00 Raytheon 140% diodes: 120% / 120% 3600 / 2500Gm NOS (OB) Loktal
1 14R7 $3.00 Raytheon 110% diodes: 110% / 120% 2600 / 2500Gm NOS (OB) Loktal - sealed in box
1 14R7 $3.00 Dumont 130% diodes: 120% / 110% 3000 / 2500Gm NOS (OB) Loktal
1 14R7 $3.00 National Union 130% diodes: 120% / 120% 3000 / 2500Gm NOS (OB) Loktal
1 14R7 $1.50 GE 120% diodes: 110% / 110% 3000 / 2500Gm used (rb) Loktal
1 14R7 $1.00 unknown 120% diodes: 110% / 110% 3000 / 2500Gm used (wb) Loktal
1 14S7 $2.00 Ken-Rad 140% / 140% 1900 / 1500:2100 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 140% 2100 / 1500:2100 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 130% 2100 / 1500:1900 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 110% 2100 / 1500:1800 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 120% 1800 / 1500:1800 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 130% 2000 / 1500:1900 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 120% 1800 / 1500:1600 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 120% 2000 / 1500:1800 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 130% 2000 / 1500:1900 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 120% 2000 / 1500:1700 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 110% 2200 / 1500:1500 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 130% / 140% 1900 / 1500:2000 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 120% 1900 / 1500:1800 / 1300Gm NOS (OB) Loktal - sealed in box
1 14S7 $2.00 Ken-Rad 140% / 140% 2000 / 1500:2000 / 1300Gm NOS (OB) Loktal - sealed in box - missing box flap
1 14S7 $2.00 Ken-Rad 130% / 140% 1900 / 1500:1800 / 1300Gm NOS (OB) Loktal - sealed in box - missing box flap
1 14S7 $2.00 Ken-Rad 130% / 140% 2000 / 1500:1800 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Ken-Rad 140% / 120% 2300 / 1500:1900 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Ken-Rad 140% / 130% 1700 / 1500:1700 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Ken-Rad 140% / 120% 2000 / 1500:1800 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Ken-Rad 130% / 130% 1700 / 1500:2000 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Ken-Rad 140% / 120% 2000 / 1500:1700 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Ken-Rad 130% / 120% 2000 / 1500:1800 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Raytheon 110% / 130% 1600 / 1500:1800 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Zenith 140% / 130% 1900 / 1500:1700 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Ting-Sol 140% / 120% 2100 / 1500:1600 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 National Union 140% / 120% 2100 / 1500:1700 / 1300Gm NOS (OB) Loktal - damaged box
1 14S7 $2.00 CBS / Hytron 140% / 110% 2000 / 1500:1500 / 1300Gm NOS (OB) Loktal
1 14S7 $2.00 Hytron untested sealed in box NOS (OB) Loktal - Bantam tube
1 14X7 $2.00 Sylvania 110% diodes: 120% / 120% 1000 / 900Gm NOS (OB) Loktal - green lettering
1 14X7 $2.00 National Union 110% diodes: 110% / 110% 1100 / 900Gm NOS (OB) Loktal
1 14X7 $2.00 National Union 110% diodes: 110% / 110% 1100 / 900Gm NOS (OB) Loktal
1 14X7 $2.00 National Union 110% diodes: 110% / 110% 1100 / 900Gm NOS (OB) Loktal
1 14X7 $2.00 Philco 110% diodes: 110% / 110% 1100 / 900Gm NOS (OB) Loktal
1 14X7 $2.00 Philco 110% diodes: 110% / 110% 1100 / 900Gm NOS (OB) Loktal
1 14X7 $2.00 Philco 110% diodes: 110% / 110% 1000 / 900Gm NOS (OB) Loktal
1 14X7 $2.00 Philco untested sealed in box NOS (OB) Loktal
1 14X7 $2.00 Ken-Rad 110% diodes: 110% / 110% 1000 / 900Gm NOS (OB) Loktal - missing box flap
1 14X7 $1.00 Sylvania 100% diodes: 110% / 110% 1000 / 900Gm used (OB) Loktal - green lettering
1 14X7 $1.00 National Union 110% diodes: 110% / 110% 1000 / 900Gm used (OB) Loktal
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, (TT)=Tall Tubular, (M7)=7pin miniature, M9=9pin miniature, (SM)=subminiature, 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 Loktal Radio 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.

Go back to the TOP

Don't forget to visit our
Discount Bargain Packs
and
Bargain Bin Tubes
for more savings!

Gmail Users
Please read this note about incorrectly declared email as spam.
This can be an issue as well with other free email providers like Hotmail, AOL, and Yahoo.

MDB Ventures Home


Contact MDB Ventures
sales@mdbventures.com
or
sales@fourwater.com