[time-nuts] Build my own dist. amp ??

[Bruce Griffiths]

Dave M wrote:
> Randy,
> There are a couple distribution amp projects on the RealHamRadio web site (http://www.realhamradio.com).  One has 8 isolated 75-ohm outputs; the other has 3 non-isolated outputs.  Here are the links to each:
>
> http://www.realhamradio.com/10mhz-video-amp.htm
> http://www.realhamradio.com/g8lmx-amplifier.htm
>
> Neither uses any of your parts, but shouldn't be unreasonable in price.
>
>   
Both of these designs flout at least some of the now well established
low phase noise design rules.

Expecting a MAX 477 to drive several 50 ohm loads in parallel at any
significant level is somewhat optimistic.

Using devices int the same package or a single opamp to drive the
individual loads compromises interchannel isolation.

Bruce