MDB Ventures Radio Loktal 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.


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 14A4 $5.00 National Union 110% 2400 / 2000Gm NOS (OB) Loktal
1 14A4 $5.00 Philco 110% 2500 / 2000Gm NOS (OB) Loktal
1 14A4 $5.00 Hytron 115% 2700 / 2000Gm NOS (OB) Loktal
1 14A4 $5.00 Hytron untested sealed in box NOS (OB) Loktal
1 14A4 $5.00 Sylvania 130% 3500 / 2000Gm NOS (OB) Loktal - green lettering
1 14A5 $4.00 Tung-Sol 120% 3400 / 3000Gm NOS (OB) Loktal
1 14A5 $4.00 Admiral 110% 3000 / 3000Gm NOS (OB) Loktal
1 14A5 $4.00 Admiral 120% 3500 / 3000Gm NOS (OB) Loktal
1 14A5 $4.00 Admiral 110% 3100 / 3000Gm NOS (OB) Loktal
1 14A5 $4.00 Admiral 110% 3100 / 3000Gm NOS (OB) Loktal
1 14A5 $4.00 Philco 110% 3200 / 3000Gm NOS (OB) Loktal
1 14A5 $4.00 GE 110% 3000 / 3000Gm NOS (OB) Loktal - white lettering
1 14A5 $4.00 GE 110% 3000 / 3000Gm NOS (OB) Loktal - white lettering
1 14A5 $4.00 RCA 130% 3800 / 3000Gm NOS (OB) Loktal - silver lettering
1 14A7 / 12B7 $5.00 National Union 120% 2200 / 2000Gm NOS (OB) Loktal
1 14A7 $5.00 Sylvania 140% 2800 / 2000Gm NOS (OB) Loktal - yellow lettering
1 14A7 $5.00 Sylvania 140% 2800 / 2000Gm NOS (OB) Loktal - yellow lettering
1 14A7 $5.00 Sylvania 130% 2600 / 2000Gm NOS (OB) Loktal - yellow lettering
1 14A7 $5.00 Sylvania 120% 2400 / 2000Gm NOS (OB) Loktal - green lettering
1 14A7 $5.00 Raytheon 130% 2400 / 2000Gm NOS (OB) Loktal
1 14A7 $5.00 Raytheon 130% 2300 / 2000Gm NOS (OB) Loktal
1 14A7 $5.00 Westinghouse 130% 2800 / 2000Gm NOS (OB) Loktal
1 14A7 $5.00 Tung-Sol 120% 2400 / 2000Gm NOS (OB) Loktal
1 14A7 $2.50 Sparton 140% 2800 / 2000Gm used (rb) Loktal
1 14A7 $2.50 Philco 120% 2400 / 2000Gm used (rb) Loktal
1 14A7 $2.50 Sylvania 120% 2600 / 2000Gm used (wb) Loktal
1 14A7 $2.50 Sylvania 130% 2600 / 2000Gm used (rb) Loktal
1 14AF7 $7.50 RCA 120% / 120% 3200: 3200 / 2600Gm NOS (OB) Loktal - silver lettering
1 14AF7 $7.50 GE 125% / 125% 2700: 2700 / 2600Gm NOS (OB) Loktal - white lettering
1 14AF7 $7.50 GE 120% / 130% 2800: 2800 / 2600Gm NOS (OB) Loktal - white lettering
1 14AF7 $7.50 Philco 120% / 120% 2600: 2600 / 2600Gm NOS (OB) Loktal
1 14AF7 $7.50 Philco 120% / 120% 2800: 2800 / 2600Gm NOS (OB) Loktal
1 14AF7 $7.50 Philco 130% / 130% 2900: 2900 / 2600Gm NOS (OB) Loktal
1 14AF7 $7.50 Philco 120% / 125% 2700: 2700 / 2600Gm NOS (OB) Loktal - sealed in box
1 14AF7 $7.50 Philco 130% / 130% 2800: 2900 / 2600Gm NOS (OB) Loktal - sealed in box
1 14AF7 $7.50 Raytheon 130% / 130% 3000: 3200 / 2600Gm NOS (OB) Loktal
1 14AF7 $7.50 Raytheon 130% / 130% 2800: 2900 / 2600Gm NOS (OB) Loktal
1 14AF7 $7.50 Hytron 120% / 120% 2700: 2800 / 2600Gm NOS (OB) Loktal
1 14AF7 $7.50 National Union 120% / 120% 2800: 2800 / 2600Gm NOS (OB) Loktal
1 14AF7 $7.50 Hoffman 140% / 130% 3200: 3400 / 2600Gm NOS (OB) Loktal
1 14AF7 $5.00 Philco 110% / 115% 2600: 2300 / 2600Gm used (rb) Loktal
1 14AF7 $5.00 Philco 130% / 120% 2600: 2600 / 2600Gm used (rb) Loktal
1 14AF7 / XXD $5.00 unknown 120% / 120% 2500: 2400 / 2600Gm used (wb) Loktal
1 14B6 $5.00 Sylvania 130% diodes: 110% / 110% 1350 / 1100Gm NOS (OB) Loktal - yellow lettering
1 14B6 $5.00 Sylvania 120% diodes: 110% / 110% 1300 / 1100Gm NOS (OB) Loktal - yellow lettering
1 14B6 $5.00 GE 140% diodes: 110% / 120% 1250 / 1100Gm NOS (OB) Loktal - red lettering
1 14B6 $5.00 Raytheon 140% diodes: 20% / 110% 1250 / 1100Gm NOS (OB) Loktal
1 14B6 $5.00 National Union 140% diodes: 120% / 120% 1300 / 1100Gm NOS (OB) Loktal
1 14B6 $5.00 National Union 140% diodes: 120% / 120% 1800 / 1100Gm NOS (OB) Loktal
1 14B6 $2.00 GE 110% diodes: 110% / 110% 1100 / 1100Gm used (rb) Loktal - yellow lettering
1 14B8 $4.00 Sylvania 130% / 120% 1600 / 1000: 900 / 500Gm NOS (OB) Loktal - green lettering
1 14B8 $4.00 Sylvania 110% / 140% 1500 / 1000: 1300 / 500Gm NOS (OB) Loktal - green lettering
1 14B8 $4.00 Sylvania 120% / 120% 1300 / 1000: 1000 / 500Gm NOS (OB) Loktal - green lettering - water damaged box - minor corrosion on base
1 14B8 $4.00 Sylvania 120% / 110% 1400 / 1000: 900 / 500Gm NOS (OB) Loktal - green lettering
1 14B8 $4.00 Sylvania 120% / 130% 1300 / 900: 900 / 500Gm NOS (OB) Loktal - green lettering - water damaged box
1 14B8 $4.00 GE 130% / 120% 1600 / 1000: 900 / 500Gm NOS (OB) Loktal - white lettering
1 14B8 $4.00 GE 120% / 120% 1400 / 1000: 900 / 500Gm NOS (OB) Loktal - white lettering
1 14B8 $4.00 RCA 130% / 120% 1500 / 1000: 1000 / 500Gm NOS (OB) Loktal - silver lettering
1 14B8 $4.00 Philco 120% / 130% 1600 / 1000: 900 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 Philco 120% / 130% 1600 / 1100: 900 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 Philco 120% / 120% 1400 / 1000: 1000 / 500Gm NOS (OB) Loktal - missing box flap
1 14B8 $4.00 Philco 120% / 110% 1100 / 1000: 900 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 Philco 120% / 120% 1600 / 1000: 900 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 Philco 130% / 140% 1300 / 1100: 900 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 RCA Victor 130% / 120% 1600 / 1000: 900 / 500Gm NOS (OB) Loktal - torn box flap
1 14B8 $4.00 RCA Victor 130% / 120% 1400 / 1000: 900 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 RCA Victor 130% / 130% 1800 / 1200: 900 / 500Gm NOS (OB) Loktal - torn box flap
1 14B8 $4.00 Raytheon 120% / 120% 1400 / 1000: 900 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 Zenith 130% / 130% 1200 / 900: 900 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 National Union 120% / 120% 1600 / 1000: 1100 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 National Union 130% / 110% 1400 / 1000: 900 / 500Gm NOS (OB) Loktal
1 14B8 $4.00 National Union 120% / 100% 1100 / 1000: 800 / 500Gm NOS (OB) Loktal
1 14C5 $4.00 Hytron untested sealed in box NOS (OB) Loktal
1 14C5 $4.00 Sylvania 140% 4600 / 3000Gm NOS (OB) Loktal - green lettering
1 14C5 $4.00 Sylvania 130% 4200 / 3000Gm NOS (OB) Loktal - green lettering
1 14C5 $4.00 Sylvania 130% 3900 / 3000Gm NOS (OB) Loktal - yellow lettering
1 14C5 $4.00 National Union 140% 4000 / 3000Gm NOS (OB) Loktal
1 14C5 $4.00 Philco 130% 4000 / 3000Gm NOS (OB) Loktal
1 14C5 $4.00 Philco 130% 4000 / 3000Gm NOS (OB) Loktal
1 14C5 $4.00 Philco 130% 4000 / 3000Gm NOS (OB) Loktal
1 14C5 $4.00 Philco 130% 3800 / 3000Gm NOS (OB) Loktal
1 14E6 $5.00 RCA Victor 130% diodes: 110% / 110% 2400 / 1800Gm NOS (OB) Loktal
1 14E6 $5.00 RCA Victor 110% diodes: 110% / 110% 2300 / 1800Gm NOS (OB) Loktal
1 14E7 $4.00 Hytron untested sealed in box NOS (OB) Loktal - sealed in box - Bantam tube
1 14E7 $4.00 Hytron untested sealed in box NOS (OB) Loktal - sealed in box - Bantam tube
1 14E7 $4.00 Hytron untested sealed in box NOS (OB) Loktal - sealed in box - Bantam tube
1 14E7 $4.00 Hytron 110% diodes: 120% / 120% 1500 / 1300Gm NOS (OB) Loktal - Bantam tube
1 14E7 $4.00 RCA Victor 120% diodes: 130% / 120% 1600 / 1300Gm NOS (OB) Loktal
1 14E7 $4.00 RCA Victor 120% diodes: 120% / 120% 1600 / 1300Gm NOS (OB) Loktal
1 14E7 $4.00 RCA 120% diodes: 120% / 120% 1650 / 1300Gm NOS (OB) Loktal - silver lettering
1 14E7 $4.00 Sylvania 130% diodes: 120% / 120% 1700 / 1300Gm NOS (OB) Loktal - green lettering
1 14E7 $4.00 Sylvania 130% diodes: 120% / 120% 1600 / 1300Gm NOS (OB) Loktal - green lettering
1 14F7 $5.00 Zenith untested sealed in box NOS (OB) Loktal - sealed in box
1 14F7 $5.00 Sylvania untested sealed in box NOS (OB) Loktal - sealed in box
1 14F7 $5.00 Sylvania untested sealed in box NOS (OB) Loktal - sealed in box
1 14F7 $5.00 Sylvania untested sealed in box NOS (OB) Loktal - sealed in box
1 14F7 $5.00 RCA 140% / 140% 1400: 1450 / 1300Gm NOS (OB) Loktal - silver lettering
1 14F7 $5.00 RCA 130% / 130% 1350: 1400 / 1300Gm NOS (OB) Loktal - silver lettering - missing box flap
1 14F7 $5.00 RCA 120% / 140% 1450: 1500 / 1300Gm NOS (OB) Loktal - silver lettering - torn box flap
1 14F7 $5.00 Hytron 130% / 120% 1300: 1300 / 1300Gm NOS (OB) Loktal - Bantam tube
1 14F7 $5.00 Hytron 130% / 130% 1300: 1350 / 1300Gm NOS (OB) Loktal
1 14F7 $5.00 Philco 140% / 130% 1400: 1350 / 1300Gm NOS (OB) Loktal
1 14F7 $5.00 Philco 130% / 140% 1350: 1400 / 1300Gm NOS (OB) Loktal
1 14F7 $5.00 Philco 140% / 140% 1450: 1500 / 1300Gm NOS (OB) Loktal
1 14F8 $5.00 Philco 120% / 130% 4200: 4600 / 4000Gm NOS (OB) Loktal
1 14F8 $5.00 Philco 140% / 120% 4500: 4000 / 4000Gm NOS (OB) Loktal
1 14F8 $5.00 Philco 140% / 140% 4500: 4600 / 4000Gm NOS (OB) Loktal
1 14F8 $5.00 RCA 140% / 140% 4800: 4800 / 4000Gm NOS (OB) Loktal - red lettering
1 14F8 $5.00 RCA 140% / 140% 4500: 4600 / 4000Gm NOS (OB) Loktal - red lettering
1 14F8 $5.00 RCA 130% / 120% 4100: 4000 / 4000Gm NOS (OB) Loktal - silver lettering
1 14F8 $5.00 Tung-Sol 140% / 140% 4300: 4200 / 4000Gm NOS (OB) Loktal
1 14F8 $5.00 GE 130% / 140% 4000: 4000 / 4000Gm NOS (OB) Loktal - white lettering
1 14F8 $5.00 National Union 120% / 140% 40005000 / 4000Gm NOS (OB) Loktal
1 14F8 $5.00 Sylvania 130% / 140% 4200: 4200 / 4000Gm NOS (OB) Loktal - green lettering - missing box flap
1 14F8 $5.00 Sylvania 140% / 140% 4500: 4500 / 4000Gm NOS (OB) Loktal - green lettering
1 14F8 $5.00 Sylvania 140% / 140% 4500: 4500 / 4000Gm NOS (OB) Loktal - green lettering
1 14F8 $5.00 Sylvania 120% / 120% 4000: 4000 / 4000Gm NOS (OB) Loktal - green lettering
1 14F8 $5.00 Sylvania 130% / 130% 4000: 4000 / 4000Gm NOS (OB) Loktal - green lettering
1 14W7 $5.00 Ken-Rad 110% 3200 / 2750Gm NOS (OB) Loktal - sealed in box
1 14W7 $5.00 Sylvania 130% 4000 / 2750Gm NOS (OB) Loktal - green lettering
1 14W7 $5.00 Sylvania 120% 4000 / 2750Gm NOS (OB) Loktal - green lettering
1 14W7 $5.00 GE 120% 3600 / 2750Gm NOS (OB) Loktal - white lettering
1 14Y4 $7.50 Hytron 120% / 120% --- NOS (OB) Loktal - Bantam tube - damaged box

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.


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sales@fourwater.com