All posts by Denzil Dexter
Below are all of Denzil Dexter's postings, with the most recent are at the bottom of the page.Thanks very much for the advice Dave. I did as you suggested and switched the aerial to vertical polarisation, removed the amplifier and tried again. Problem is the same, all channels are fine except those on the COM5 multiplexor. The interference happens every 32 seconds, which is really strange.
DD
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Hello (again) all,
I posted the following just after the 18th April regarding the Rowridge retune.....
"I live in Poole, BH17 and have, since the 18th April, been having problems with Really, E4+1 and Dave. The picture stays for about 30s with approx 65% signal strength and 100% quality, then drops to 0% and 0% before repeating the cycle. I get this on my Sony TV and Sony PVR.
I have a wideband aerial (2yrs old) on a mast on the roof together with a 17db to 27db mast head amplifier. I have reduced the mast head amplifier to it's minimum 17db setting having read the signal may have been too high post switch over".
These TV channels are all on the COM5 mux (482Mhz). Anyway it was suggested that I try a YAGI 18A grouped aerial without the MHA. I've now have the YAGI 18a and have tried everything I can think of namely:
* YAGI 18A vertically and horizontally polarised.
* MHA fitted and not fitted.
* Aerial tilted up, down, left and right.
* Numerous retunes.
I have new PF100 cable fitted throughout.
The aerial is on a 2m pole on the roof pointing directly at Rowridge and yet I still get the total signal loss every 30ish seconds. It's as if something else is periodically transmitting on 482Mhz to interfere???
Can anyone suggest anything else to try as I'm close to losing it? Everything was fine prior to the 18th April.
Kindest regards,
DD
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Tuesday 24 April 2012 5:56PM
Poole
Hello all,
I live in Poole, BH17 and have, since the 18th April, been having problems with Really, E4+1 and Dave. The picture stays for about 30s with approx 65% signal strength and 100% quality, then drops to 0% and 0% before repeating the cycle. I get this on my Sony TV and Sony PVR.
I have a wideband aerial (2yrs old) on a mast on the roof together with a 17db to 27db mast head amplifier. I have reduced the mast head amplifier to it's minimum 17db setting having read the signal may have been too high post switch over (without it I lose the above channels as the signal is too low).
Can anyone suggest a way forward so that I can reliably receive these channels or at least shed some light on what might be going on?
Kind regards,
DD