Vintage IPC Jensen 8” Theatre Monitor Speaker Altec Western Electric 755A Era. Good working deco speaker. The metal cabinet measures 18” tall x 15” wide and 8” deep. Can be hung on the wall. I will pack well for you and international buyers must use eBay’s global shipping program.

ONE WESTERN ELECTRIC 420A OR JW5755 vacuum tubeTested on my Hickok 539c tube tester min: 1550results: 2000 / 2000 USEDAS IS

ONE (1) TUBE, Calibrated TV7 Tested Western Electric 420A ( 5755 ) Dated 1 39 USA Tube Condition: Lightly Used, Dan Nelson Calibrated (11/11/2021) TV7 Tested Good with Balanced Plates, Clean Pins Plug in and Play Condition. - Made in the USA by Western Electric model 420A / 5755- Production date 1961 1 39- Model 5755 420A Dual/Twin/Double Triode- Two Thick Boxed Smooth Dark Gray Plates- Clear Top We have included in the pics both the Western Electric 420A / 5755 data sheet specs and the Raytheon CK5755data sheet specs for your evaluation. TV7 Data states Minimum Good meter reading of 25/25 = 625/625 uMhos Gm when tested at Eb= 150V Plate Supply Voltage at Heater/Filament 6.3v and Ec = -0.6 volts. All versions of TV7s test at a maximum of 150V~/-- Plate Volts.A 150v Plate supply voltage is not given in both spec sheets only 110V and 180V and these differ greatly for Gm Transconductance and Plate Current dissipation in mA for a factory NOS tube. Bogey Spec : Western Electric Factory NOS 420A / 5755 and the Raytheon 5755 tube running in CLASS A circuit, Gives Two Gm/mA specs given two different Plate supply voltages (110Volts and 180Volts)1.) Heater supply Voltage 6.3v connected in parralell test at 110V Plate Volt Supply = 20/20 = 500/500 uMhos Gm at 0.15/0.15 milliampere.2.) Heater supply Voltage 6.3v connected in parralell test at 180V Plate Volt Supply = 60/60 = 1,500/1,500 uMhos (Gm) at 2.2/2.2 milliampere (mA).3.) Speculation : when tested at 150V Plate supply voltage the Tubes Gm Transconductance should be 44/44 = 1,100/1,100 uMhos at 1.7/1.7mA Digital TV7 Test Results : NO SHORTS, NO LEAKAGE, NO Gas, NO Micro phonics Detected -test results are seen in the pics(Digital Meter Reading, uMhos (?? ) Transconductance (Gm), Anode Plate Current (mA) Tube : (WECO 5755 420A) Plate 1: 38.6 (min=25) = 965.0 uMhos (Gm) at 1.8 mA plate current Plate 2: 38.8 (min=25) = 970.0 uMhos (Gm) at 1.6 mA plate current Please preview in detail all pics Our Test set : Recent Dan Nelson (11/11/2021) Restored, Enhanced, Upgraded & Calibrated with Digital Meter reading Transconductance (Gm) and Anode Plate Current Dissipation (mA). We use Nolan Lees last published TV7 conversationspreadsheet to transpose TV7s numerical meter readings (0-120) into actual uMhos Gm transconductance #s based upon the Selector switch settings( A-E). WE SHIP FAST, WE COMBINE SHIPPING ON MULTIPLE PURCHASES, WE CAREFULLY TEST EVEN NOS/NIB VACUUM TUBES TO ENSURE THEY TEST NEW GIVENTHE ORGINAL MANUFACTURERS DATA SHEET. WE PACK WELL FOR SAFE SHIPPING, Many years of shipping Experience with FRAGILE Vacuum Tubesand Vintage Electronics. WE Usually SHIP Within 1 Day,Orders received by 1pm EST usually ship SAME DAY as Immediate Purchase. Monday-Saturday. Our standard service for ALL 50 States is USPS 1st Class, 2nd option is USPS Priority Mail small box. International Shipping Only via eBay Economy Small Package Service space available container air-freight (10 day to 6weeksdelivery depending upon region/country).Some country restrictions apply. If you country is in the drop down list under the shipping tab then WE SHIP!Please note : Any customs duties, taxes or additional fees your country my apply are the responsibility of the buyer.

inlcudes boxTested on Hickok 533aMUt Cond 1200.Tests1200/1200

This is a Western Electric 420A JW 5755 clear top getter less. This was part of a lot of tubes that all the boxes suffered from dampness and were falling apart. So I am selling them as open box but they are NOS. They have been fully tested using a TV7D/U which has been refurbished and calibrated. Tested as 40-40/25. I do not have plate current numbers but will retest on a Hickok 539C which will provide more information. As can be seen the tube is in excellent physical condition as well as electrical condition. No shorts, No leakage. No cracks around pins and no corrossion on pins. Shipping will be USPS first class and well packed in a small box. Thanks for looking. Note: I tested this tube on the Hickok 539C as 5755 and it tested as follows (Gm micro mhos and current in Ma. ) 1600-1625/975 at 1.8ma for each section. No shorts or leakage detected.

This is a Western Electric 420A JW 5755 clear top getter less. This was part of a lot of tubes that all the boxes suffered from dampness and were falling apart. So I am selling them as open box but they are NOS. They have been fully tested using a TV7D/U which has been refurbished and calibrated. Tested as 40-40/25. I do not have plate current numbers but will retest on a Hickok 539C which will provide more information. As can be seen the tube is in excellent physical condition as well as electrical condition. No shorts, No leakage. No cracks around pins and no corrossion on pins. Shipping will be USPS first class and well packed in a small box. Thanks for looking. Note: I tested this tube on the Hickok 539C as 5755 and it tested as follows (Gm micro mhos and current in Ma. ) 1600-1625/975 at 1.8ma for each section. No shorts or leakage detected.

Here is a Western Electric JW 5755 / 420A gray plate vintage radio vacuum tube that is in excellent clean condition for its age, see pics for condition and all that is included. This is a vintage USA made tube branded Western Electric and is untested. It has the code 652. It will be packaged for safe shipping. See my other items, vintage tube, guitar parts and more. Shipping is done by USPS. Multiple auctions won will receive a discount when combined, the more you buy the more you save. For multiple items, click REQUEST TOTAL FROM SELLER after Buy It Now to receive an invoice. Ebay automatically adds state sales tax.

I have 1 Excellent New in the box Western electric 5755 tube