To: | Amplifier Mailing List <amps@contesting.com> |
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Subject: | Re: [Amps] Alpha Input SWR |
From: | Colin Lamb <k7fm@teleport.com> |
Reply-to: | Colin Lamb <k7fm@teleport.com> |
Date: | Fri, 9 Jan 2015 20:01:05 -0800 (GMT-08:00) |
List-post: | <amps@contesting.com">mailto:amps@contesting.com> |
If the swr is too high and you have excess drive, make up a 2 db 50 ohm pad. My Alpha uses an untuned input with an impedance transformer and resistive loading. When the FCC amplifier rules changed, they suggested removing the resistors. That also increases the swr a bit. A pad of the correct impedance will improve the mismatch - if you have excess drive available. 73, Colin K7FM _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps |
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