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Toshiba Pair of 6JS6C (Green Stripe) Tubes for the Yaesu FT-101 Series Transceivers Used, Tested & Guaranteed

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MPN:
6JS6C
Condition:
Used
Shipping:
$8.00 (Fixed Shipping Cost)
  • Set of 2 Toshiba Green Stripe 6JS6C tubes, used but tested full emission. Original Japan-made finals for Yaesu FT-101 series. Matched pair plus spare – excellent for restoration. Fast US shipping.
  • Set of 2 Toshiba Green Stripe 6JS6C tubes, used but tested full emission. Original Japan-made finals for Yaesu FT-101 series. Matched pair plus spare – excellent for restoration. Fast US shipping.
$49.99
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Description

Toshiba Pair of 6JS6C (Green Stripe) Tubes for the Yaesu FT-101 Series Transceivers Used, Tested & Guaranteed

 This tube and all others, has been tested on a B&K Dynaquick 700 Tube tester. It shows grid full emission.

 
Toshiba Green Stripe 6JS6C Tubes (Used, Tested Full Emission)These are the highly desirable original factory Toshiba 6JS6C tubes with the signature green stripe/band, Made in Japan. They were the standard finals supplied by Yaesu in the early FT-101 series. The green stripe version is particularly sought after by collectors and restorers for excellent neutralization characteristics and reliable performance in the Yaesu circuit.
 
Information on the TubeThe 6JS6C is a 12-pin Compactron beam power pentode sweep tube. Toshiba’s green-stripe versions are considered among the best for amateur radio use due to their quality construction and consistent characteristics. 
 
 
Amateur Radios That Use 6JS6C TubesThe Yaesu FT-101 series (FT-101, FT-101B, FT-101E, FT-101EE, FT-101EX, etc.) primarily use a pair (2) of 6JS6C final tubes. These deliver approximately 100–130W PEP output on HF bands. Other Yaesu models and some linear amplifiers also used this tube type.
 
 

The 6JS6C is a vintage vacuum tube classified as a compactron beam power pentode. It was originally designed for use as a horizontal deflection amplifier (commonly called a "sweep tube") in color television receivers during the 1960s and 1970s. These tubes are known for their rugged construction, high power handling, and low interelectrode capacitances, which make them suitable for RF amplification in amateur radio applications despite their TV origins. They were produced by major manufacturers like General Electric (GE), RCA, Sylvania, and Raytheon

exclusively associated with the Yaesu FT-101 series—no other major transceiver models are documented as using it in their finals. (Some linear amplifiers, like certain Ameritron models, used similar sweep tubes such as 6JM6, but not the 6JS6C specifically.)Yaesu FT-101 Series Overview  This line of HF SSB/CW/AM transceivers (80–10 meters, plus optional 6 meters in some variants) was produced from 1971–1980 and remains popular for restoration due to its modular design and performance. The 6JS6C tubes form the push-pull final amplifier stage, driven by a 12BY7A pentode, delivering:

  • Output Power: ~130 W PEP SSB, 90 W CW, 40 W AM (with two tubes).
  • Pi-Network Matching: Transforms the tubes' ~3000 Ω output impedance to 50 Ω antenna impedance.
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