[Elecraft] Amp power per $$ spreadsheet download

[Mike Harris]

Resonance doesn't mean 50 ohm.

Regards,

Mike VP8NO

On 28/04/2015 08:02, Bob Naumann wrote:
> Just to clarify a couple of things: the Acom amplifiers *do not* have
> antenna tuners built-in.
>
> They merely use a traditional tuned final design that has the ability to
> match into a moderate range of impedances.  This can be up to a 3:1 SWR in
> certain limited circumstances (less on 160m).
>
> If you have resonant antennas, you'll be just fine - even at the extremes of
> 75/80m in many cases.  If you have a very narrow band antenna, not so much.
>
> The Acoms have no more of an "antenna tuner" than did an SB-220 or a 30L1
> for example.
>
> Also, aside from the new Solid State Acom 600S (with a switching power
> supply), all of the Acom amplifiers use traditional linear power supplies
> with multiple taps on the primary which allows using them on 120 to 240v,
> single phase.
>
> Needless to say, using them on 240v is best for numerous reasons.
>
> 73,
>
> Bob W5OV