[AMRadio] New Transmitter

Jack Schmidling jack at schmidling.com
Mon Nov 27 12:00:02 EST 2006

Mike Sawyer wrote:
> Jack,
>     Did you mean 572's or 872's? 572's are triodes and 872's are mercury 
> rectifiers. I suspect you meant 572's. The 572 are ok but I'm here to tell 
> you that the 813 is a damn near indestructible tube! I have seen plenty of 
> 572's that have crapped out from abuse of some sort or another. But I have 
> yet to see an 813 that has crapped out. Take it from me, they are a very 
> hearty tube and you can get them cheaper than the 572's.

Pardon the typo.

Just thought I would ask as I never hear anyone using 572's for anything 
other than my amp.


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