RCA RADIOTRON -UY-227 amplifier vacuum tube valve Type 27 Engraved Base. Hickok tested 900 micromhos (Spec is 1000). 90%.

4 RCA Radiotronl globe Type UY-227 Mesh Plate tubes. AT1000 Tested, all 111% gm Thes tube were tested on an Amplitrex AT1000. One of its well know attributes is for detecting gas. The gas levels shown below will likely not be detected by other testers.The tube also was checked for noise and microphonics. Before testing the heater was on for at least 2 minutes and plate voltage was applied for at least on minute. The Transconductance spec for a new tube is 900 mhosAmplitrex AT1000 results. Tubemhos Emissions %GM % Gas mAH-K leakage uaTube 1100093111.10Tube 2100090111.00Tube 3100095111.10Tube 4100096111.00 Typically it is acceptable to have gas values below 1ma. These are all well below that. Cleaning the tubes is being left to the buyer since often cleaning the tubes also removes labeling.Test results are written on the tube boxes. International buyers:eBays Global Shipping will be used. Domestic purchases can be combined to reduce shipping costs. Items usually ship the day after receiving payment.

The following item is up for SALE - 1 - RCA Radiotron UY-227 Vintage Vacuum Tube LOT # 109

RADIO RECORD PLAYER CHANGER AMPLIFIER SERVICE MANUAL1967 RCA VICTOR RC-1227A -1227B -1227C This listing is for an original Photofact service folder that fits the make and model listed above. This item includes information such as alignment instructions, schematics, line drawings, exploded views of the interior, parts listings and more. This manual is 13 pages long. US customers receive FREE SHIPPING on all radio and TV service manuals. Outside the US? We mail up to FIVE manuals for the single manual shipping cost! _gsrx_vers_1516 (GS 9.3 (1516))

RCA RADIOTRON -UY-227 amplifier vacuum tube valve Type 27 Engraved Base. Hickok tested 900 micromhos (Spec is 1000). 90%.

RCA Vacuum Tubes Lot Of 14 Various Type UY224, UY227, GA7, 24A, 35, 27, 80. Presumed to be new old stock, but they have not been tested.

RCA RADIOTRON -UY-227 amplifier vacuum tube valve Type 27 Engraved Base. Hickok tested 900 micromhos (Spec is 1000). 90%.

Still selling off tubes acquired over 30 years of dabbling in the vintage radio hobby. This is a nice pair of two engraved base RCA Radiotron UY-227 globe style tubes. Engraved base. One has more mirrored glass than the other. I tested these tubes on my Hickok 800 mutual conductance tester. Tube readings are: Silver Tube2100 Clear Tube1550 Minimum reading is 1000 Gm so these tubes are good. PLEASE NOTE: I will not refund money on tubes that people tell me test lower on their tester. I know my testers are good and I stand by their readings. If they get broken, I will refund. If you are unhappy with it, you can send it back to me at your expense and I will refund money. Ive sold a ton of tubes over the last few months and only a couple have had issues. People are pleased as per my feedback. Ill ship anywhere in the world. Local pickup is free. If you win more than one tube auction I can combine shipping (please hold off paying if you want me to combine until I can invoice you and give you the correct shipping. Ebay notoriously over charges). If you wish to hold off shipping to bid on next weeks auctions thats fine too. Im flexible. Any questions? Just drop me line.