CCI (Communications Concepts) sells LP filter kits to go with their Motorola
App-note based amplifiers, for users to homebrew a bandswitching filter bank
and be compliant with FCC spectral purity requirements -- and they sell them
very cheaply. Last time I bought some, I think the filters were about $10
per band, well worth it. If the Palomar amps have no bandswitch, this might
be a good option. -WB2WIK/6
"Success is the ability to go from failure to failure with no loss of
enthusiasm." -Winston Churchill
> -----Original Message-----
> From: Vic Rosenthal [SMTP:vic@rakefet.com]
> Sent: Wednesday, March 12, 2003 8:15 AM
> To: N8WNB@aol.com
> Cc: amps@contesting.com
> Subject: Re: [Amps] Speaking of Palomar
>
> N8WNB@aol.com wrote:
> >
> > I have one of the new Palomar amps, it is the HD-250. It come with
> absolutely
> > no paper work whatsoever. It operates from 10-40 with no tuning (it
> cannot be
> > tuned).
>
> I am not fmiliar with this particular model, but if it does not have a
> switched
> lowpass filter (in other words, if it doesn't have a bandswitch) then it
> is
> certainly generating harmonics to a degree far beyond what the FCC
> permits. It
> can't legally be sold for amateur purposes. If you operate on a frequency
> whose
> harmonics fall outside of the ham bands, you could be cited and fined by
> the
> FCC. Does it have a bandswitch?
>
> Vic K2VCO
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