Recent content by park_gate

Huevos has been plotting signal strength for some time now and it does look like there has been an increase in signal strength since 11 Feb. Please see attached charts. The second chart shows the 2E SNR reference to C4 HD on 2F. This shows 2E has increase by about 1 dB reference to 2F since...

People do allsorts of strange things when trying to get the best performance in fringe reception areas. If memory serves me right the Sharp claim to fame was a very low NF. If that means a smaller dish could be used thereby either saving money or allowing a dish to be fitted where there is...

Ok I understand what you are getting at. RF measurements are not very accurate. Although the meter may give a reading to a resolution of 0.1 dB they are not that good. The main reasons for a SNR reading to vary over time are: Fluctuating Meter Changing Atmospheric conditions Wobble in the...

Hi, Thanks for the feedback. Terry

First off I would like to thank you for the signal strength data. I’m not sure what you mean by a bit untidy but I’ve put the data in a spread sheet and done an average over 10 points to get a smother curve. I’ve also turned off the auto scale on the axis and manually set them to get better...

Any chance of them starting to use Ku band sometime in the future when they have used up the Ka band? Terry

From the signal reports we can definitely say there is a drop of in signal level on the Costa Brava and it increase back up as you go south towards the Costa Blanca before it drops off again on the Costa del Sol. How bad the problem is, is really difficult to say, not just because these areas...

It is extreamly unlikely 2F is only 1.5M. 1N is published to have 3 x 2.6M dishes and 2F seems tighter than 1N. If memory serves me right 2D was 1.8M or 1.9M and 2F is tighter than than 1D. Unfortunatly there is very little tech info but 2F can't be 1.5M its got to be larger. They can tweek...

That's what happens when you go off axis from the main beam. See ... hxxp://www.satellite-calculations.com/Satellite/antennapattern.php It's to do with the laws of physics. Terry

How can you say that with such certainty? I found technical info on 2F, 2E and 2G really hard to find. Is 2.6M the biggest dish they can fit to an E3000 satellite? Terry

Yes I agree but 2G could cause some really nasty problems for fringe reception. If they start reusing frequencies to increase capacity so the H and V use the same frequencies the lack of cross polar isolation in fringe areas could be a real problem. They might want to do this for more HD...

My original post explains the problem of not having the information about the satellite antenna and the fact that the simulator is for an ideal parabolic dish. So the plots are approximate. Have you tried going to the web site and played with the parameters? Is it possible 2F has a bigger...

You are right on the crapshoot as we don't have enough info on the satellite antenna to say what is going to happen. I've not even been able find info on the diameter of the 2F and 2E antennas. I have found an interesting web site that predicts the footprint assuming an ideal parabolic dish...

Where did you get the information about the theoretical side lobe? Don't you need to know the design of the satellite dish to do this? Terry

What do you base that on? I seem to remember reading somewhere that 2E, 2F and 2G were identical satellites. Why would they go to the expense of designing and testing 3 different antenna? Terry