[Hallicrafters] delay tube

[Walt Cates]

That is a 12NO90T which means 12vac, normally open cold, 90 second delay and T for thermal. A lot of folks including myself prefer the 12NO120T which gives the 8122's a little more warm up before you slap the voltage to them. The last one I found was at Surplus Sales of Nebraska @ $50. I have seen them for as high as $115 each.


Best Regards, Walt Cates, WD0GOF, http://www.myhamshack.com/WD0GOF/<http://www.myhamshack.com/WD0GOF/>

I pity the self made man, he is definitely working at a disadvantage. I cherish the help from God, family and mentors.