[RFI] Coaxial Choke

Cortland Richmond ka5s at earthlink.net
Mon Apr 20 04:45:18 PDT 2009

We are not rivals.    FWIW, HP's first product was an audio generator, the
HP 200A.

In EMC, I have do deal with all sorts of stuff including, yes, audio.  400
Hz power can be nasty, and a lot of engineers think aluminum no matter how
thin, is a shield. Heh. 


> [Original Message]
> From: Jim Brown <jim at audiosystemsgroup.com>
> On Thu, 16 Apr 2009 08:45:26 -0700, Lee K7TJR wrote:
> >I think the RF engineers have been mischaracterized just a bit. Take for
> >Messrs Packard, Hewlett, Vollum, and nameless others
> How many of them has designed an ANTENNA with anything approaching the
> bandwidth of an audio system?  And how many decades passed before HP
produced an RF 
> generator or analyzer that covered the percentage bandwidth of an audio

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