Description: D-getters, somewhat different internal constructionboth are fairly well-used but good working condition with life remainingone branded for Bogen, marked 65-50 and 66-09 188-4one marked 59-35 and 188-21 Tubes are tested on a B&K 707 mutual conductance tube tester recently serviced and calibrated by Mike Mabry in Woodland, WA. Mike has been working on this series of testers for many years. The tubes tested as follows, for each side, where the first number is a scaled Gm and the parenthetical number is life rating; a Gm rating of approx. 66 or higher is considered "good": 59-35: 82 (80)Bogen: 81 (75) The test ratings on this type of B&K tester may require a bit of explanation. Their "life test" is considered "good" if the meter rating is within 25% of the Gm rating. e.g., a tube with a mutual conductance (scaled) rating of 80 would still be passable if the life test registered a 60 on the meter. Most of their test settings correspond with a 0-120 scaled reading where the "good" area is about 66 and higher on the meter. If you want to combine tubes for a shipping discount, this is possible if you wait for an invoice before paying for any winnings. THANK YOU for looking!
Price: 80 USD
Location: Portland, Oregon
End Time: 2025-01-22T01:24:09.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Model: 6L6GC
Country/Region of Manufacture: United States
Type: Vacuum Tube
MPN: Does Not Apply
Brand: GE
