Date: Sat, 20 May 2017 22:53:42 +0300
From: "Val" <val@vip.bg>
To: <amps@contesting.com>
Subject: Re: [Amps] Interesting new amplifier
Message-ID: <A707CC1FA1B4416B8B2589A0A3DA4C02@OFFICE>
Content-Type: text/plain; format=flowed; charset="UTF-8";
reply-type=original
> ## Interesting. So other than the ?42 db harmonic suppression, what
> else is
> required to make an HF amp meet FCC technical requirements ?
>
> Jim VE7RF
<As far as I remember, no more than 15 dB gain and no gain between 26
<and 28 MHz. If DX5 meets those requirements, it could be authorized by
<FCC as far as the max power is out of question.
73, Val LZ1VB
### ok, so the 15 db rule is still in effect ??? I thought the old 15 db
rule was only
applicable between 25-30 mhz ?
## You are no doubt correct, which explains the input padding on the FCC
approved version of the OM-4000. That, and the cpu shutting down the amp,
if it sees more than 100w of drive on the input side.
## It really is silly when you think of it. Any padding can easily be
removed or bypassed.
Adding 12 + 10M just requires a ham ticket..anybodys will do, or add it your
self.
## The folks who get the short end of the stick are the QRP folks..with the 15
db gain limit.
Even then, the padding can still be bypassed.
## The 11m folks dont use ham amps on 11m anyway, since most ham amps have
lousy eff
on 10m...and barely work as is..and are into melt down on FM + AM.
Jim VE7RF
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