Description: SHINING LIGHT is Offering The Following Tubes:Three Excellent RCA JRC 2D21 Relays or Grid-Controlled Rectifier Tubes Lot#: E240NOS NIBDurable MILSPEC Tubes3X MicaFully Tested as Per HICKOCK Testing Protocol Matched Date Codes: H53Value Added TubesPins Cleaned & Straightened with Proprietary ProcessTube Surfaces Cleaned"Plug & Play"TestingHickok TV-7A/U*Tubes Tested on Calibrated Hickok TV-7A/U Mutual Conductance Tester.Tubes Test as Follows.Actual Tube Readings:Tube #1: 78, Strikes between 30 & 40 when Adjusting TV-7 BiasTube #2: 79, Strikes between 30 & 40 when Adjusting TV-7 BiasTube #3: 81, Strikes between 30 & 40 when Adjusting TV-7 BiasNo Shorts.TV-7A/U Minimum (65% of New Tubes) for 2D21 Tubes: 40.TV-7A/U has been Refurbished and Calibrated by Dan Nelson. Murphy's Law: "All Tube Testers are Wrong but Some are Useful"The results of your tube tester may vary from these measurements. Returns:We Offer 30 Day Returns with a Free Shipping Label!Returns Accepted if the Items are Returned in the Exact Same Condition.The Pull Tabs on the Tube Boxes Must be in the Same Condition.The Cotton must be Installed on Each End of the Tube in Each Box.The Pull Tabs will be Taped so Tubes do not Fall-Out of Boxes During Shipping.Carefully Cut the Tape on the Pull Tabs to Open Boxes.The Lettering on the Tubes Must Also be in the Same Condition upon Return.Hold Tubes in Areas where there is No Silkscreen.Tubes Must Test with the Same Results Upon Return.Facts about Murph...Dairy Farmed in Green Bay, WI until I was about 27 years old.Started out my career in electro-mechanical, then Electrical Engineering.Moved into Biological Engineering where I spent most of my career.If you ever ate a candy bar, I might have had something to do with the quality...Over the last 10 years, I have moved my spare time to repairing tube and discrete amps & receivers.I like Fisher Receivers and Scott Amps.I have too many tubes.Statistics-driven when evaluating vacuum tubes > Certified Six Sigma Master Black Belt.Testing Equipment: Two Nelson Hickok TV-7s, Two Hickok 539Bs, One Recently Acquired AMPLITREX AT-1000.I have too many testers.Murph really tries to to list and sell really good vacuum tubes. Why buy from old Murph?Integrity & Trust: Just Check my feedbackI answer emails.I ship fast. I pack well.I combine shipping. The shipping calculator should work for this listing.I don't require immediate payment. You can add items and I can invoice you with combined shipping.I use the Ebay return policy of 30 days.If you have any problems and old Murph will take care of you. :-)I want to ensure that you are happy with your purchase. Sometimes, Murph misses something. Murph is getting old and can make mistakes on occasion! Murph's goal is a 5-Star sale to you, my customer! If you feel that Murph has fallen short, feel free to contact Murph and we will get it straightened-out. :-)
Price: 11.27 USD
Location: Harrisburg, Pennsylvania
End Time: 2024-11-26T16:19:57.000Z
Shipping Cost: N/A USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Seller
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: RCA
Type: NOS Tube
Model: JRC 2D21
MPN: JRC 2D21
Country/Region of Manufacture: United States
