[Amps] 813's

[Jim Thomson]

Date: Mon, 21 Dec 2015 10:57:04 -0800
From: Tom Osborne <w7why at frontier.com>
To: amps at contesting.com
Subject: [Amps] 813's

Why are 813 tubes considered 'dirty'?

I have an old amp in the attic I haven't used for a long time that has a
pair of 813's in it  I have read somewhere that they are a very 'dirty'
tube.  I'd assume that means lots of spurs or something.

Just wonder why that would be.  73
Tom W7WHY

###  By  dirty.... they mean lousy  TX  IMD. Nothing to do with spurs  etc. 

Jim   VE7RF