[Top] [All Lists]

Re: [Amps] SB200 on 30 M

To: <>
Subject: Re: [Amps] SB200 on 30 M
From: "Chris Hays" <>
Date: Fri, 6 Oct 2017 08:35:09 -0700
List-post: <>
I don't know the rules in Canada, but 30 meters is a shared allocation and
in the U.S. the power limit is 200 watts PEP.  300 watts on 30 meters is
illegal in the U.S.  Check your local regulations.

Chris, AB6QK

Message: 2
Date: Thu, 5 Oct 2017 19:58:59 -0700
From: jerome schatten <>
Subject: [Amps] SB200 on 30m
Message-ID: <>
Content-Type: text/plain; charset=utf-8


On 30m using the 20m band-switch position, I?m able to get about 200w out
into a dummy load/wattmeter before the grid current rises faster than the
plate current. On 80/40 I can get over 400w out.  Since I?m only interested
in using the amp on 80/40/30, I thought to improve the 30m situation a bit
by adding a few turns to the total pi-network inductance in the 20m

I?m willing to sacrifice a bit of efficiency on 80/40 to bring up 30 and
sacrifice 20/15/10 entirely. The goal here would be 300+ watts on 80/40/30
with ease. I have already taken care of the input matching for 30 in the 20m

I would appreciate any suggestions.

Jerome - va7vv/ve7ass



Amps mailing list

<Prev in Thread] Current Thread [Next in Thread>