Fw: [Boatanchors] DX 100

[Harold Smith]

>
> It sounds to me like the old problem from 50 years ago.
>
> First you should not exceed 2 mA per tube or 4 mA total.
> Your lowering grid current and rising plate current sounds like Grid 
> Emission . 6146s are known
> to do this. Once this occurs, the only remedy is to replace the tubes. RCA 
> and GE had tech notes
> on this problem. I think that Johnson also had a bulletin on this also.
>
> 73 Price WØRI
>
>
>
> I need a bit more help with the DX 100. Can anyone out there give me an 
> idea of what might be the problem with my DX100 slowly falling Grid 
> current. This happens after I peak the grid current to about 5 mils  and 
> then key the transmitter. It will hold for a few moments and then begin to 
> fall to zero. At this point the plate current goes all the up to the end 
> stop and I have to shut the plate switch off quickly.  This happens with a 
> crystal as well as the VFO.