[SignalOne] 8072 Final Tube

[K5OG]

Make sure you have bias.  About 60v at the PS and depending on the RF 
Board setting it will be around 20 to 30v at the tube.
Screen about 300 and HV about 1500.
Check the value of the resistors in the tube socket can.
As the others have said, the 8072 is built like a brick $h*t house and 
they seldom fail.  They will loose output over a VERY long period of 
time and a lot of use.
73 de
Fred
K5OG
www.signalone.org

On 12/29/2017 2:50 PM, A Cass wrote:
>
> This list is for discussions regarding collecting, repair, use and sale of Signal/One radios and accessories.
>
> Documentation on Signal/One radios can be found at http://www.hamanuals.com and several other sites on the Web.
>
> .
> I have a EICO 667 Tube Tester and the latest tube listing - no 8072 tube is listed.
>
>
> Anyone know how this tube cam be tested?
>
>
> thx
>
>
> Alan, W4FBI
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