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Re: Topband: Heathkit SB-1000

To: "Jim Murray" <adkmurray@yahoo.com>, <topband@contesting.com>
Subject: Re: Topband: Heathkit SB-1000
From: "Tom W8JI" <w8ji@w8ji.com>
Reply-to: Tom W8JI <w8ji@w8ji.com>
Date: Thu, 17 Dec 2015 07:30:32 -0500
List-post: <topband@contesting.com">mailto:topband@contesting.com>
Anybody know how to make an SB-1000 tune properly on 160? Ok on other bands but doesn't like 160, dummy load or well tuned Inv.L. Is it a quirk of the amp needing a modification or possibly a bad component? Saw nothing obvious before putting it to use but have not had the cover off since.Thanks,Jimk2hn
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The SB1000 is the same as an early AL80A. It hits the 160 band perfectly as long as it does not have a component off value or a wiring error. The tank was unchanged all through the run of the AL80A up until the 80B was out.

Which control is bottoming out? The plate or the loading? How much power are you trying to run when tuning it?


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