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
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