Don't worry about broadband noise from a DTV transmitter. The FCC has required
mask filters that have significant out of band rejection.
73, Fred K2TR
--- On Wed, 5/27/09, Michael Sapp <wa3tts@verizon.net> wrote:
From: Michael Sapp <wa3tts@verizon.net>
Subject: [VHFcontesting] DTV transition & June Contest
To: "VHF TEST REFLTR" <vhfcontesting@contesting.com>
Date: Wednesday, May 27, 2009, 9:54 PM
Hi Folks: With both CH2 and CH13 going digital, those of us at W3KWH are
looking forward to actually being able to hear weak signals out to the East
Coast in the June contest. Channel 2 switched from its transistor amplifier to
its tube amp for the final month (May) and the broadband noise (LOS 5 mi) on 6M
went from S6 down to S1 at the club station when pointing East through North.
CH2 will vacate on June 12, removing the remaining 20db of crud on the 6M
band. Channel 13 has temporarily moved to its CH16 subcarrier which means the
constant S6 white noise (8 mi LOS) is also gone from 60 through 120 deg azimuth
on 222MHz. So we are looking forward to actually being able to compete on 6M
and 222 versus hearing like EA3JE on 160/80M. PBS CH13 is going back to its
216MHz allocation in August, but we are hoping the digital RFI will be less
than the analog audio and video carriers---or that funding drys up and they
expire. No rules whining from
us, we are just glad to enjoy w
hat ever VHF propagation becomes available. 73 Mike wa3tts
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