Teletone verticle size

[timmy]

The 6x5 is in the exact spot where the other run chassis has the ballast. So I'll have to keep in mind that these tubes are known for heater cathode shorts and there is no power transformer to worry about cooking in the event the tube goes bad. What ohms would be ideal to replace the heater loads on the 25z6 and 6x5 tubes, would 15 ohms 10 watt for the 6x5 and 50 ohms 10 watt for the 25z6 be close ?

[jr_tech]

Not real close... R=E/I

for the 6X5, I get R= 6.3 volt / 0.6 amp. so R = 10.5 ohms. 15 ohms is a little high, but with todays higher power line voltages will likely work ok.

for the 25Z6 I get R= 25 volt / O.3 amp , so R = 83 ohms. I would not use a 50 ohm resistor there.

10 watt resistors should be adequate.

jr