[Elecraft] What's with the new amplifier?

[Vic K2VCO]

N2TK, Tony wrote:
> Yes, the 87A has an auto tuner. 

 From page 7 of the manual:

"On any frequency where your antenna VSWR exceeds 1.5:1, it’s important 
to manually program the ALPHA 87A for a proper match. See manual 
sections 7.2-7.4. Efficiency, linearity, and output often can be 
improved even when VSWR is less than 1.5:1. The 87A does not contain an 
antenna tuner. The SWR will need to be tuned via the antenna or an 
external tuner connected to the output of the Alpha 87A."

<http://www.alpharadioproducts.com/87A_manu.pdf>

Yes, there is a mode that you can use to adjust the 87A for an antenna 
that isn't perfectly matched, just like you can with any manually tuned 
tube amplifier.  No it does *not* have a built-in tuner!
-- 
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco