Description: FIVE(5) NOS/NIB UNUSED DATE MATCHED Jan. 1977 Amperex Holland 6C4 (EC90 CV133) Triode Vacuum Tubes in Clean Original Amperex 6C4 Boxes with Sleeve. - Top-side Horseshoe "D" Getter- Amperex 6C4 (Medium Mu=17-20 Single Triode, 1/2 of a 12AU7 twin triode)- All orange inked "Made in Holland" (some with faded ink but still eligible)- All 5 are Orange inked Dated on glass '77-05' with Amperex Small Orange Globe( some ink is fading) Engineering Data Sheet Specs(Amperex 6C4) : frank dot pocnet dot net/sheets/093/6/6C4 dot pdf'Bogey' when tested at 250V Plate Supply Volts, where Gm=2,200 uMhos at Ia=10.5 mA Emissions Condition: Dan Nelson Calibrated (07/04/2023) TV7D/U re-Tested atNOS Factory Data Sheet Specs, Still New Unused 6C4 for Transconductance Gm & mA plate current emissions.Plug-in and play condition. Clean Boxes, Very Clean Glass, Pins and Orange Ink (see Pics) A printed copy of this detailed description will be included in the box shipped. Country:United States of America (USA) Identical to6C4=EC90=CV133 First Source (s)09.May.1942 : Electron Tube Registration ListPredecessor Tubes6L5GBaseMiniatur-7-Pin-Base B7G, USA 1940 (Codex=Zk)Was used byRadio/TV-reception etc.FilamentVf 6.3 Volts / If 0.15 Ampere / Indirect / Specified voltage AND current AC/DCDescription Approximately similar to one section of 12AU7. Miniature VHF medium-mu triode, usable as oscillator or class C amplifier, delivering up to 2.5W at 150MHz. Text in other languages (may differ)Tube prices4 Tube prices (visible for members only)Information sourceEssential Characteristics, GE 1973 Tube Lore (II) p. 55 Taschenbuch zum Röhren-Codex 1948/49 WE PACK VERY WELL FOR SAFE SHIPPING WORLDWIDE TO OVER 100 COUNTRIES,WE SHIP FAST. MANY YEARS EXPERIECE SHIPPING FRAGILE TUBES AND VINTAGE FRAGILE ELECTRONICSAND SPEAKER SYSTEMS. USPS Ground Advantage low-cost shipping to All USA 50 states, US Territories, PO/APO/DPO/FPO Boxes. International Shipping : via 'Improved' eBAY International Shipping Center - Low Cost Space available Air-Freight,GARRANTEED DELIVERY, FULL TRACKING - Insured( allow 10days to 6weeks delivery depending upon your country of destination)
Price: 49.95 USD
Location: Miami, Florida
End Time: 2024-12-03T17:38:05.000Z
Shipping Cost: N/A USD
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Item Specifics
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: Amperex
Type: NOS/NIB Unused
Model: Jan. 1977 Amperex 6C4 Triode ( 1/2 of a 12AX7)
MPN: 6C4
Country/Region of Manufacture: Netherlands
Unit Quantity: 5
