[Elecraft] K2 - Time on K2 Finals

[Kurt Cramer]

The less then two hours refers to the running time before you tighten the mounting screws. They become loose and need to be tightened once after installation.
Kurt W7QHD

> From: ron at cobi.biz
> To: elecraft at mailman.qth.net
> Date: Sat, 12 Nov 2011 11:24:59 -0800
> Subject: Re: [Elecraft] K2 - Time on K2 Finals
> 
> Another 'old school' carryover was to purchase a replacement for a rig's
> final(s) since Murphy decreed they'd fail at the most inconvenient time. So
> I ordered spares for my K2 when I built it in 2000. 
> 
> In spite of all the normal operating gaffs - transmitting briefly into an
> open load with infinite SWR too many times, hammering away at the key for
> waaaaay too long in a rag chew, etc., the K2 still works like new and the
> replacement "finals" are still in my operating desk drawer somewhere...
> 
> Ron AC7AC
> 
> 
> 
> -----Original Message-----
> 
> John,
> 
> I don't know of any lifetime issues with the K2 finals or any other 
> transmitter with a solid state PA.  That was an important consideration 
> with tubes, so maybe it was just an "old school" statement.
> 
> The K2 PA transistors are quite hardy, but if one abuses them 
> sufficiently (for instance transmitting into a high SWR at high power), 
> they will turn "belly up" in short order.
> 
> 73,
> Don W3FPR
> 
> On 11/12/2011 8:59 AM, John wrote:
> > On 11/11/11 10:24 AM, Hunsdon Cary III wrote:
> >> rig has less than two hours on the finals;
> > Just wondering why "less than two hours on the finals" is important.  Do
> > K2 finals have a lifetime issue?
> >
> >
> 
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