Raytheon 5Y3GT Black Plate Rectifier Matched Pair NOS 5Y3

This is a well matched pair of Raytheon 5Y3GT vacuum tubes. These tubes have a medium glass bottle with Raytheon markings on the base.  They test very strong, with greater than NOS readings. They were manufactured to rigorous industrial specifications for superior quality and long life. They have black plates, orange lettering, clear glass, and bottom getter. These are excellent Raytheon 5Y3 tubes that are highly sought after, act quickly before these sell out! More available upon request.

Be careful buying tubes from sellers who list tubes as matched if they do not provide test results or the equipment that they tested their tubes on.

I personally tested this tube on my recently calibrated Hickok 600a and my TV7D/U and the results are as follows:

Pass/Pass

Pass/Pass

*Rectifiers test on a pass fail scale, they are not measured on gm or transconductance.