|[AMRadio] Microphone recomendation|
bguyger at sbcglobal.net
Thu Sep 24 17:07:26 EDT 2009
Not sure that Euro or Phoenix connectors were around (or at least readily available) when these beasties were built. Strictly 1970's low tech.
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".
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 screw-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
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