But there's no guarantee fitting one would fix the problem. (Passive splitting would reduce by 4dB for 2-way, and 8dB 4-ways.)Ī simple log periodic would have 6dB gain and give 66 / 62 dB before any splitting.
#Hd pvr no signal on tv fix tv#
Ideal levels at a TV is 45 to 65dBuV so maybe a tad high unless passive splitting is used. aerial gain say +11dB average (Unix52W has 9dB at ch21 to 14dB at 55/56.). If any amplifiers (boosters) are in use I'd be removing them and trying the aerial direct to TV (especially when having a reception issue) in case that amplification is making the interfering signal strong enough to cause problems that the aerial alone would not.Ħ4/60 dB field.
Keep hdmi and aerial cables separated as much as they can be. It's always worth going over all the plugs/sockets and cables to re-make any suspect ones. It may just be that this problem is going to keep appearing from time to time and an alternative aerial may not help if the gain/directions are wrong? Thus minimise any automatic tuning processes to keep those channels stored on the TV.
There can be tricks done, such as mis-pointing the aerial to minimise the unwanted pickup (getting that transmitter is a minimum gain lobe) while not markedly affecting the pickup from the wanted (CP). There's quite probably a 'lobe' on that high gain aerial that is picking up whatever other transmitter(s) is(are) unwanted at such times. I'd guess at it being a Triax Unix 52.īut TV metering is a variable feast and knowing the TV make and model may be useful?ĬP predictions are for interference on the COM7/8 single frequency network at times - probably from Sandy Heath when there's suitable high pressure (enhanced propagation) conditions about (Bluebell Hill being nearer is probably in the co-timing guard interval). A group A for CP would give significantly lower I'd have thought? The size of the folded dipole to the next forward element seems to corroborate that? Aerials, TV Aerial and Digital Aerial Wideband would have been commonly carried and fitted in Essex to accommodate alternative transmitter sources as well as often being recommended for DTT. 100% strength on most and 74% on the two HD COMs would suggest to me that it might be a wideband aerial already. I have not tried turning OFF the TV/Rogers Box, then turning it ON to try and replicate this problem.Wolfbane estimates 64dBuV 200kW and that'll be around 60dBuV for COM7/8. A second HD PVR (a 9865) and TV in another area of the house doesn't display this problem - ever. A week without the problem, then once two days in a row. I assume this would also be true if you were to try and turn off the box and TV. My wife always tells me to stand further back from the TV and HD PVR (Cisco Explorer 8642HD High-Definition DVR Set-Top by the way) to turn it on, otherwise only the Rogers box or the TV turns on if too close. I have been asked why is this happening, I thought you guys might have an idea WHY or HOW the TV and the box might be getting out of synch to cause this mischief?
Press POWER button OFF on remote and then back ON again, the TV program magically appears. Problem starts with "NO SIGNAL" on the TV when the remote POWER button is pressed ON. Here is a variation on the same "out of synch" theme being discussed. I keep my remote in a pocket at the side of my chair with a bunch of other remotes and often the device buttons will get pressed accidentally, so I always press the CBL button first before using it. Once that happens you have to press the TV button to get them back in sync. Yes, getting the TV and Rogers box out of sync is a common problem, especially if the box and TV sensors aren't close together or if you move the remote too quickly after pressing the power button.
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