[mythtv-users] Thinking of moving on from MythTV :-( Any suggestions? (for the UK)

[Philip Brady]

________________________________
From: mythtv-users <mythtv-users-bounces at mythtv.org> on behalf of Paul Gardiner <lists at glidos.net>
Sent: 02 January 2017 09:34
To: Discussion about MythTV
Subject: Re: [mythtv-users] Thinking of moving on from MythTV :-( Any suggestions? (for the UK)



On 01/01/2017 21:16, Simon Hobson wrote:
> Damian <myth at surr.co.uk> wrote:
>
>> I meant the Live TV from within MythTV.
>> I don't have a real TV to check signals with, but did have TV guys come out and check the signal a couple of years ago. The signal runs through 2 boosters now.
>
> But, you shouldn't have 2 boosters. It's a common misconception that chaining boosters will help - in general it won't, because if you have that weak a signal, your boosters will amplify the noise and you'll end up with plenty of signal but with a crap signal/noise ratio (snr). snr is probably more important than signal strength !

Just a thought: try removing one of the boosters. Perhaps your
transmitter has been upgraded to higher power and now you have too much
signal. In any case, 2 boosters is unlikely to solve a signal problem.
And if you need even a single booster, it should be on the mast head not
after the long run of cable. All things worth sorting out, whether or
not you stick with MythTV or move to another system.

Cheers,
        Paul.
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Paul has suggested removing one of your amplifiers.  Expanding that signal overload thinking, do you also have a low noise amplifier in your tuner(s) turned on?

A further thought.  Could you have multiple instances of your channels - one set from Mendip, another set from a more distant transmitter?  Myth has been reported to randomly choose one or the other, hence the variable nature of you recordings.
You can either check this with the backend channel editor and hide channels appropriately or alternatively the perl based editor  https://www.mythtv.org/wiki/Channel_Editor has a sort to readily identify these duplicates, it will give a list of the multiplexes from which you can identify the rogue ones, and a bulk 'hide all in multiplex N ' feature.

Phil


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