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Re: [Amps] AL-1200 vs AL-1500

To: "Joe Subich, K4IK" <k4ik@subich.com>
Subject: Re: [Amps] AL-1200 vs AL-1500
From: R.Measures <r@somis.org>
Date: Fri, 25 Feb 2005 09:43:23 -0800
List-post: <mailto:amps@contesting.com>
On Feb 24, 2005, at 4:45 PM, Joe Subich, K4IK wrote:

>
> NX5M writes:
>
>> I am beginning to lean toward the AL1500 at this point.  I
>> will have the opportunity to operate with one as well as
>> with the same radio I am considering to purchase Friday
>> night.
>
> The one problem with the AL-1500 is the sensitivity of the
> 8877 to changes in the load.  K8CC has written several times
> about problems with high grid current as the load changes
> with multiple antennas.  The 3CX-1200 and its relatives
> (3-500Z, 3-1000Z, etc.) have much more rugged grids and are
> not likely to get into trouble when slightly "off tune."

The 8877 has a 25w rated grid.  In normal operation, the 
grid-dissipation is c. 8w.  To me, this appears to be a good safety 
margin.
>
> 73,
>
>    ... Joe, K4IK
>
>
>
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>
>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org

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