I will be listing the tubes I have for sale and updating it regularly as listings come and go. Unless otherwise noted all tubes have been tested for shorts, gas and transconductance on a Hickok 539A. If you are interested in any of the tubes please send me a PM.
A lot of 10 12AU7's. Included in this listing are a pair of GE's, a pair of RCA clear tops, a pair of Sylvania 5814's, a GE 5 star 5963 and a GE 5 star 12AU7 paired together and another GE 12AU7 pair. All have been tested for shorts, gas and transconductance on a Hickok 539A. The results are as follows:
Shorts: PASS
Gas: PASS
Transconductance:
GE 5963 (white print):
Minimum good: 1950umhos
Result:
Triode 1: 4000umhos
Triode 2: 4000umhos
GE 12AU7 (red print):
Result:
Triode 1: 3200umhos
Triode 2: 3500umhos
GE 5963 (red print):
Result:
Triode 1: 3400umhos
Triode 2: 3700umhos
GE 5963 (white print):
Result:
Triode 1: 4300umhos
Triode 2: 4200umhos
Sylvania 5814:
Result:
Triode 1: 3300umhos
Triode 2: 3600umhos
Sylvania 5814:
Result:
Triode 1: 4000umhos
Triode 2: 4000umhos
GE 12AU7:
Result:
Triode 1: 4000umhos
Triode 2: 4000umhos
GE 12AU7:
Result:
Triode 1: 3800umhos
Triode 2: 3800umhos
RCA clear top:
Result:
Triode 1: 3800umhos
Triode 2: 3900umhos
RCA clear top:
Result:
Triode 1: 2400umhos
Triode 2: 2500umhos
I'd like $15 plus $6.50 for shipping for any one pair or you may have all five pairs for $70 plus $6.50 for shipping.
Images:
A pair of RCA 6201's and a pair of RCA 12AT7's. All four tubes are in good shape with most of their screen printing intact. They have been tested for shorts, gas and transconductance on a Hickok 539A. The results are as follows:
RCA 12AT7:
Minimum good: 2500umhos
Result:
Triode 1: 4500umhos
Triode 2: 4500umhos
RCA 12AT7:
Result:
Triode 1: 2800umhos
Triode 2: 3300umhos
RCA 6201:
Result:
Triode 1: 2900umhos
Triode 2: 3500umhos
RCA 6201:
Result:
Triode 1: 3200umhos
Triode 2: 3200umhos
I'd like $15 plus $6.50 for shipping for the 12AT7's and $35 plus $6.50 for shipping for the 6201's.
Images:
A pair of Amperex 6DJ8's. All of the screen printing is missing but I believe that these are from the "Bugle Boy" era. The codes on the tubes are as follows: G Delta5H3 and G Delta6A2. I had trouble reading the second and third figures on the top code set. The tubes have been tested for shorts, gas and transconductance on a Hickok 539A. The results are as follows:
Shorts: PASS
Gas: PASS
Transconductance:
Minimum good: 7750umhos
Tube 1:
Triode 1: 10,000umhos
Triode 2: 11,000umhos
Tube 2:
Triode 1: 9,500umhos
Triode 2: 10,000umhos
I'd like $35 plus $6.50 for shipping.
Images:
A lot of 10 12AU7's. Included in this listing are a pair of GE's, a pair of RCA clear tops, a pair of Sylvania 5814's, a GE 5 star 5963 and a GE 5 star 12AU7 paired together and another GE 12AU7 pair. All have been tested for shorts, gas and transconductance on a Hickok 539A. The results are as follows:
Shorts: PASS
Gas: PASS
Transconductance:
GE 5963 (white print):
Minimum good: 1950umhos
Result:
Triode 1: 4000umhos
Triode 2: 4000umhos
GE 12AU7 (red print):
Result:
Triode 1: 3200umhos
Triode 2: 3500umhos
GE 5963 (red print):
Result:
Triode 1: 3400umhos
Triode 2: 3700umhos
GE 5963 (white print):
Result:
Triode 1: 4300umhos
Triode 2: 4200umhos
Sylvania 5814:
Result:
Triode 1: 3300umhos
Triode 2: 3600umhos
Sylvania 5814:
Result:
Triode 1: 4000umhos
Triode 2: 4000umhos
GE 12AU7:
Result:
Triode 1: 4000umhos
Triode 2: 4000umhos
GE 12AU7:
Result:
Triode 1: 3800umhos
Triode 2: 3800umhos
RCA clear top:
Result:
Triode 1: 3800umhos
Triode 2: 3900umhos
RCA clear top:
Result:
Triode 1: 2400umhos
Triode 2: 2500umhos
I'd like $15 plus $6.50 for shipping for any one pair or you may have all five pairs for $70 plus $6.50 for shipping.
Images:
An externally hosted image should be here but it was not working when we last tested it.
A pair of RCA 6201's and a pair of RCA 12AT7's. All four tubes are in good shape with most of their screen printing intact. They have been tested for shorts, gas and transconductance on a Hickok 539A. The results are as follows:
RCA 12AT7:
Minimum good: 2500umhos
Result:
Triode 1: 4500umhos
Triode 2: 4500umhos
RCA 12AT7:
Result:
Triode 1: 2800umhos
Triode 2: 3300umhos
RCA 6201:
Result:
Triode 1: 2900umhos
Triode 2: 3500umhos
RCA 6201:
Result:
Triode 1: 3200umhos
Triode 2: 3200umhos
I'd like $15 plus $6.50 for shipping for the 12AT7's and $35 plus $6.50 for shipping for the 6201's.
Images:
An externally hosted image should be here but it was not working when we last tested it.
A pair of Amperex 6DJ8's. All of the screen printing is missing but I believe that these are from the "Bugle Boy" era. The codes on the tubes are as follows: G Delta5H3 and G Delta6A2. I had trouble reading the second and third figures on the top code set. The tubes have been tested for shorts, gas and transconductance on a Hickok 539A. The results are as follows:
Shorts: PASS
Gas: PASS
Transconductance:
Minimum good: 7750umhos
Tube 1:
Triode 1: 10,000umhos
Triode 2: 11,000umhos
Tube 2:
Triode 1: 9,500umhos
Triode 2: 10,000umhos
I'd like $35 plus $6.50 for shipping.
Images:
An externally hosted image should be here but it was not working when we last tested it.
Last edited:
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