2 Sylvania JAN-CHS-6SN7GT 3 hole bad boy tubes

 

Welcome to another VintageElectric auction!

 

Up for sale are two Sylvania 6SN7GT tubes. Made in the USA and of vintage production.

Both test very well. Close in GM and current.

Dual tested on:

·     Sofia Vacuum Tube Curve Tracer

o   Computer controlled, regulated supplies.

·     Hickok TV-7D

o   Calibrated by Dan Nelson.

TEST 1- Sofia test

Tested at 6SN7 industry test parameters-
250v plate, -8.0v bias.

Industry bogey nominal/new 6SN7-
Gm: 2600/2600, Ip: 8.0/8.0 mA.

Sofia test results-

 

Mutual Cond

(Gm)

Plate current

(Ip)

Grid current

Tube 1
#351

2510 (96.5%)

2430 (93.4%)

7.59mA

6.94mA

0.0uA

Tube 2
#226

2280 (87.7%)

2020 (77.7%)

7.26mA

6.87mA

0.0uA

 

Hickok TV-7D test

Min GM for the 6SN7 on the TV7 is 50 per section.
Very good 6SN7’s test above 90. New test ~100.

Anode current measured during the TV7 test.

TV-7D test results-

 

Mutual Cond

(Gm)

Plate current

(Ip)

Gas/shorts tests

Tube 1

96/94

10.9/10.5mA

PASS

Tube 2

90/89

10.3/10.3mA

PASS

In conclusion-


These test as good tubes.
Close in GM and current.
100% guaranteed.

 

All my items are 100% guaranteed to arrive as represented for 30 days upon arrival. My mission is to make you happy with your purchase. I offer a full refund if you are not satisfied. All items are professionally packed to arrive safely with no extra handling costs. 

I've been selling vintage electronics since 1999 with perfect ebay feedback and many happy, satisfied customers.

All tubes are pre-tested on a Sencore TC-154 for shorts and gas, then tested for GM & plate current on a calibrated Hickok TV-7D/U.

Unless stated, tubes offered are not generally tested for noise and microphonics. However, if they do not work in your application, you may return them for a full refund. As mentioned before, my tubes are 100% guaranteed!


Terms & Conditions:

Payment must be received within 3 days of the auction end date. Items described to the best of my ability. Items 100% guaranteed to arrive safely and test as represented for 30 days. Unless requested, all items will be shipped by U.S. Priority Mail. Heavier items will be shipped via UPS.

My guarantee is VOID if you- (A) use these in an circuit not designed to run this part or tube type; (B) use in a circuit that has NOT been restored or serviced.

Delinquent buyers will be reported to ebay. No extended warranties are implied on any item.

If you have questions, please call or text me at (-1) 510-504-0634 BEFORE bidding. By bidding you confirm that you have read, understand and accept these terms and conditions.

Thank you and happy bidding!