Full Freeview on the Rowridge (Isle Of Wight, England) transmitter

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4:20 PM

Ray: The of the Commercial (COM) multiplexes, SDN, ArqA and ArqB are 50kW horizontal and 200kW vertical. The Public Service ones are 200kW horizontally and vertically.

Your issue isn't forced to be weak . It could be from another such as which is co- for the COMs. The difference is that Crystal Palace only transmits horizontally, so you will probably be best advised to switch your to vertical.

M

MC48
4:53 PM

I wish they would do away with the nag screen on ITV1 etc to retune if missing .

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I

I Pike
9:55 PM

Hi I have done last retune 18th April. Service has always been good on all but now can hardly get yesterday also itv 3 not good. Very disapointed as led to believe service would be much better after new .

I Pike's 1 post GB flag

_{sentiment_very_satisfied}Platinum

10:39 PM

I Pike: Ensure that your is tuned to for these . Go to ITV3 and bring up the strength screen and check that it is tuned to UHF channel 25. Likewise for Yesterday it is . Pick TV is .

If you are tuned to Rowridge, then you may benefit from switching your aerial to vertical.

The Public Service channels (BBC, ITV1, , Channel 5 etc) are at a transmission power of 200kW horizontally and vertically. The Commercial ones (ITV3, Pick TV, Yesterday, Film 4, Dave etc) are 50kW horizontally and 200kW vertically.

_{sentiment_very_satisfied}Platinum

10:42 PM

I Pike: I should also point out that the three Commercial use the same frequencies as and , so depending on your location they could be the cause of .

On Wednesday when the Commercial channels changed channels, the of Stockland Hill went up, and Crystal Palace's came on air at its .

Without knowledge of your location, I can't know how likely this might be that it is interference.

Switching your to vertical should with that if it is. It will be two-fold:

1. A stronger .

2. Greater rejection of the unwanted signals as they are horizontal only.

R

Ray
10:01 AM
Andover

Dave:

thank you for your reply.

Would you think it is possible that whilst there may be on ArqA and ArqB from , there is none on SDN?

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Ray's: R's Freeview map R's terrain plot R's frequency data R's Freeview Detailed Coverage

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11:08 AM

Ray: Different frequencies travel differently. So in the days of if you remember ever siting an , there were places where one was good but another wasn't so. This is because different frequencies get bounced around, refracted etc in differently, so at the point of they may not all be of equal strength.

P

PeterC
4:27 PM
Waterlooville

I have to share 'Ray's concern. I am also in location PO80PZ. Since the change over I have intermittent connections on all my TV's. I have also retuned all sets several times with no improvements. On turn-on I always get '' before the TV finally finds the stations and several times during viewing intermittent viewing. I have a DVT-Finder ( Labgear) which I have used occational. I have observed that dB reading has reduced from 80 to 70 strength.
It would be expensive to replace or reposition the existing without any guarantee it would work.
This would appear to be a location problem. What is your solution?

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PeterC's: P's Freeview map P's terrain plot P's frequency data P's Freeview Detailed Coverage

D

Denzil Dexter
5:56 PM
Poole

Hello all,
I live in , BH17 and have, since the 18th April, been having problems with Really, E4+1 and Dave. The stays for about 30s with approx 65% strength and 100% , then drops to 0% and 0% before repeating the cycle. I get this on my Sony TV and Sony PVR.

I have a aerial (2yrs old) on a on the together with a 17db to 27db mast head . 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 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

Denzil Dexter's 3 posts GB flag

Denzil's: D's Freeview map D's terrain plot D's frequency data D's Freeview Detailed Coverage

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6:24 PM

Denzil Dexter: Change your to vertical polarisation if you can.

The Commercial (including the ones you mention) are 50kW horizontally and 200kW vertically. The Public Service channels (BBC, ITV1, , Channel 5 etc) are 200kW horizontally and vertically.

Also, the three Commercial channels are co-channel with their partners from . The only difference being that Stockland is horizontally polarised only. So switching to vertical should reject Stockland if it is interfering and should also help pick up more from .

Also, if I were you, I wouldn't assume that the problem is too low a signal. That is not, of course to say that it isn't the case. Be mindful that too much signal can appear as too little signal where is concerned.

See Freeview signals: too much of a good thing is bad for you | ukfree.tv - independent free digital TV advice

I should imagine that if you do have too much signal, then based on your distance from the it won't be as a result of the aerial. It is more likely to be due to the .

Another thing is that it could be that the higher Public Service channels are acting to de-sensitise your , thus it doesn't "hear" the lower power Commercial channels which are nearby. Reducing or removing your level of amplification could help rectify that.

Indeed, if you're DIYing it, then I would start off by removing the booster and switching the aerial to vertical and then work from there.