[IRCA] Re: Low-level IBOC on KTRB-860

["Robert Foxworth" <rfoxwor1@xxxxxxxxxxxxxxx>]

>I have spoken with KTRB engineering folks in the recent past about IBOC
on KTRB and they say they are not using it.  I get nice hiss >from them
on 850 and 870, and "hets" on 840 and 880.  I question item #1 and they
deny any reason for item #2.
>
>Mike Hawkins
>Tracy CA
>
>Albert Lehr <aelehr@xxxxxxxxxxxxxxxx> wrote:
>>KTRB-860 in Modesto, CA appears to be transmitting a barely
>>noticeable IBOC signal.
>>KTRB and KCBS-740 are about equal in signal strength here.
>>Tuning across KCBS, their IBOC sidebands are very obvious.
>>Tuning across KTRB, their IBOC sidebands are often buried
>>in the slop from their AM signal. The sidebands peak at about
>>851 and 869 kHz.
>>
>>Albert Lehr - Livermore, CA


Any chance this is someone else on 860 with IBOC and the
KTRB carrier is covering it up, but the sidebands are
sneaking past, on a relatively open freq? I don't know what
else would explain the weakness of the sidebands, relative
to a strong Modesto. It would seem to have to be a nonstandard
IBOC installation, or a defective installation, to me, or  a second
signal.

Any chance of DFing the hiss, and KTRB, and seeing if the
null matches?

- Bob


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