DESCRIPTION:
Raytheon Type 35/51 Vacuum Tube NOS Tested 100%
Condition: NOS
Box: Brittle
Silkscreen : 95%
Some boxes are brittle, or have imperfections, starting to crumble if they are not salvageable will ship in a plain or different brand box
Please note: These tubes may be NOS or test NOS but will actually have a few hours of use from the manufacturer or due from testing from time to time on them. A truly NOS tube will have excellent getter flashing condition, no dirt/grime, usually in the original box, and no filament deposits and has never been tested. Please expect the tube to have a small amount of used
Since vacuum tubes were made 30 - 70 years ago New Old Stock or Used may have cosmetic evidence of age. This includes poor print, oxidized pins, faint discoloration, or poorly box
TESTED IN A HICKOK 6000
1) Filament 2) checked for shorts, Leakage 3) Grid (Gas)
4) Emission Test
5) Dynamic Mutual Conductance
Result on GM
Tube ( 1200 µhmos ) Acceptable NOS Value = 1020
Where 65% it fails = 663
AND
6) Life Test = Useful Life in Tube = 100%
Two testers are never the same. So this shows what I get, and what you get may be slightly 10-15% different.
If I state any values they are for a guide only.
No guarantee is made that any tube will test to a specific value in the buyer's tube tester, most all tubes are tested on at least two tube testers
This because of the variation in line voltage, different bias, and circuits.
All tubes have passed the Gas and short tests.
Regulator, Ralay, Rectifiers and Diode tubes do not have Transconductance values.
Shipping
times
Domestic USPS First Class Mail: 3-7 Days, includes tracking
International USPS First Class Mail: 3-5 weeks but sometimes
longer, without tracking
Please eBay shipping estimates is not Accurate
Request an Invoice
Canada $14.98
Other $18.98
International Buyers
Please Note:
Buyer is
responsible for all taxes, duties, and import fees. Please contact your local
customs office for costs.
Return Policy
Guarantee: 100%
Contact Us
If you're in any way dissatisfied with your purchase, do not hesitate to contact us through "MY MESSAGES". We will do our best to solve it for you. We are committed to ensuring that you are completely satisfied with every transaction.
So Please DO contact us first to get a better solution before you would leave
A Negative