Happy Memorial Day
Hello again, all.
I've had nothing much to post about for the last two weeks. I've been working my new job and keeping up with site updates as needed.
A couple of interesting points. The first is that pre-amplifiers can greatly improve fringe signal, even having two in a series. For many years, my family has had a setup involving two antennas out on the roof and then coming in to a 30 dB Radio Shack amp. On Saturday, on a whim, I took my CM7777 and put it in the line before the Radio Shack amp, and saw signal on my weakest signals spike. To be specific:
Speaking of WDRL-DT, I was finally able to decode the station on Saturday evening thanks in part to the amp and to favorable atmospheric conditions. I've posted some TSReader output and found that the station does not appear to be transmitting any PSIP at all. The Zenith receivers showed the station on 41-3 with no guide data or identification, and my DViCO I use for TSReader wouldn't even show me the video feed for some reason. This probably explains why I seem to remember my Zenith HDV420 shutting itself off last time WDRL-DT decoded (it was never strong enough to do so on Saturday night with that receiver).
Does anyone know if there's a receiver like the WinTV-D in terms of its signal measurements, but with a newer chip in it? I love the way it measures signal, but the tuner in it is atrocious. I had 13.8 dB SNR on it when WDRL-DT was decoding cleanly on the Zenith DTT900 boxes downstairs. The WinTV-D generally needs about 16.5 dB SNR to decode cleanly, just to give an idea of how much of an improvement there is. (That said, low-VHF on the Zenith begins trying to decode a lot sooner, but isn't watchable until it's stabilized on the WinTV-D, which just goes to show how much more signal is required to overcome low-VHF's problems.) If you wish to see what its signal meter looks like, here's Girard Westerberg's page on it. The signal meter images begin about 2/3 of the way down the page.
Anyway, enjoy your Memorial Day and updates here will resume tonight just after midnight. Have a great day!
I've had nothing much to post about for the last two weeks. I've been working my new job and keeping up with site updates as needed.
A couple of interesting points. The first is that pre-amplifiers can greatly improve fringe signal, even having two in a series. For many years, my family has had a setup involving two antennas out on the roof and then coming in to a 30 dB Radio Shack amp. On Saturday, on a whim, I took my CM7777 and put it in the line before the Radio Shack amp, and saw signal on my weakest signals spike. To be specific:
- WBRA-DT went from about 11 dB up to 13.5 dB-14.2 dB, usually sitting right at 13.8 dB.
- WDRL-DT went from varying between 4-7 dB to a fairly consistent 10-12 dB, usually sitting right at 10.8 dB.
Speaking of WDRL-DT, I was finally able to decode the station on Saturday evening thanks in part to the amp and to favorable atmospheric conditions. I've posted some TSReader output and found that the station does not appear to be transmitting any PSIP at all. The Zenith receivers showed the station on 41-3 with no guide data or identification, and my DViCO I use for TSReader wouldn't even show me the video feed for some reason. This probably explains why I seem to remember my Zenith HDV420 shutting itself off last time WDRL-DT decoded (it was never strong enough to do so on Saturday night with that receiver).
Does anyone know if there's a receiver like the WinTV-D in terms of its signal measurements, but with a newer chip in it? I love the way it measures signal, but the tuner in it is atrocious. I had 13.8 dB SNR on it when WDRL-DT was decoding cleanly on the Zenith DTT900 boxes downstairs. The WinTV-D generally needs about 16.5 dB SNR to decode cleanly, just to give an idea of how much of an improvement there is. (That said, low-VHF on the Zenith begins trying to decode a lot sooner, but isn't watchable until it's stabilized on the WinTV-D, which just goes to show how much more signal is required to overcome low-VHF's problems.) If you wish to see what its signal meter looks like, here's Girard Westerberg's page on it. The signal meter images begin about 2/3 of the way down the page.
Anyway, enjoy your Memorial Day and updates here will resume tonight just after midnight. Have a great day!
posted by Trip at
10:52 AM
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