Remembering of course that a PURC station was designed for PAGING service... 
If you have ever had to set levels in a paging or fire dispatch system that 
used the very low end tones just above the PL range you know real fast why 
the "flat audio board" was created.

Milt
N3LTQ


----- Original Message ----- 
From: "Jeff DePolo" <[EMAIL PROTECTED]>
To: <Repeater-Builder@yahoogroups.com>
Sent: Thursday, March 15, 2007 10:43 AM
Subject: RE: [Repeater-Builder] Re: Flat Audio


>> Most two-way radio people never use the term flat audio repeater. We
>> would assume most standard voice audio repeaters operate as the
>> mentioned so the "flat audio repeater" has never really been applied
>> by Industry as a real description.  Some Amateurs seem to want to
>> apply the label and confuse the heck out of everyone. It appears that
>> these people have done a pretty good job...
>>
>> To the Industry... the proper term is more likely to be "transparent".
>
> Perhaps Motorola, not hams, created the "flat audio" monicker.  The "flat
> audio" board came standard with the exciter in Micor PURC stations (it 
> took
> the place of the PL deck).  Its purpose was similiar to that of "flat 
> audio"
> mods hams do - it got around the "blue blob" mic processor which normally
> provides preemphasis/clipping/LPF.
>
> Regardless, it's confusing as heck to many newcomers.
>
> --- Jeff
>
>
>
>
>
>
> Yahoo! Groups Links
>
>
>

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