Description
2 NOS Matched Code JAN-5814A 5814 tubes. AT1000 Tested. 1986 Both tubes have the following codes, 8639, ANC 34167 Before testing the heater was on for at least 2 minutes and plate voltage was applied for at least on minute. Also checked for shorts, noise, heater to cathode leakage, and microphonics. They were tested on a Amplitrex AT1000. One of this tester's attributes is being sensitive for detecting gas . The gas level found by the AT1000 most likely will not be measurable in most other tube tester. That is other tube testers likely will show no gas at all. The Amplitrex was set to fixed bias mode. The Transconductance spec for a new tube is 2200 mhos at 250 plate volts. Amplitrex AT1000 results. Tube Emissions % GM % mhos 5814A 116/85 109/95 2400/2100 5814A 107/102 109/109 2400/2400 The AT1000 manual recommends that gas values should be below 1ma for small signal tubes. Test results are written inside the box lids. Domestic purchases can be combined to reduce shipping costs. International shipping will be through eBay Global shipping Program. Items usually ship the day after payment is received.