[AMRadio] Microphone recomendation

[sbjohnston at aol.com]

This Logitek rack mixer has XLRs and TRS phone jacks on the back, not 
bad.


Steve WD8DAS

sbjohnston at aol.com
http://www.wd8das.net/
---------------------------------------------------------
Radio is your best entertainment value.
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-----Original Message-----
From: BILL GUYGER <bguyger at sbcglobal.net>
To: Discussion of AM Radio in the Amateur Service 
<amradio at mailman.qth.net>
Sent: Thu, Sep 24, 2009 4:07 pm
Subject: Re: [AMRadio] Microphone recomendation










Not sure that Euro or Phoenix connectors were around (or at least 
readily
available) when these beasties were built. Strictly 1970's low tech.

Bill AD5OL




________________________________
From: Paul Christensen <w9ac at arrl.net>
To: Discussion of AM Radio in the Amateur Service 
<amradio at mailman.qth.net>
Sent: Thursday, September 24, 2009 3:53:28 PM
Subject: Re: [AMRadio] Microphone recomendation

> Amen to Steve's comments on Logitek. They run 120V. from the back 
panel to
> the power switch on the front panel on a piece of Belden 8451 shieded 
pair
> audio cable bundled in with the microphone lines from the back panel
> connectors. Shall we say less than "best engineering practices".

And...

Consideration to rack placement is critical.  If access to the 
Logitek's top
cover is needed for maintenance and its obstructed, it means removing 
every
single wire to an array of=2
0screw-down barrier strips.  A better 
solution for
Logitek would have been to design a back-plane using miniature 
Euro-Block
connectors so that groups of plugs can be unplugged from a mating 
barrier
jack.  Need to remove the mixer from the rack?  No problem.  Just 
unplug a
few connectors and reconnect when maintenance is complete.

For most equipment, removing a few wires is not problematic.  But when 
you
consider the number of possible connections on the Logitek back-plane,
removing every wire can be a nightmare.  Fortunately for amateur radio
purposes, not too many of us need a lot of inputs -- unlike typical 
remote
broadcast demands.

Paul, W9AC

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