QUOTE(stimix @ Jan 5 2010, 08:47 PM)
There is asignal amplifier available by the installer for RM25.. One of MSM member manage to install that & the signal increased from 180 to 250..i.e the max!!
http://www.malsingmaps.com/forums/viewtopi...=169834#p169834Sorry to disappoint you but the increase in signal is not a true increase, all that has happened is that the amplitude of the signal has increased.
For satellite signals the most important measurement is "Carrier to Noise Ratio", this is the magnitude of difference between the actual signal and the noise (interference). For example, if you have a signal of 200 with a "noise" level of 20 and adding an amplifier increases the signal to 250 then the underlying noise will have gone up to 25.
What this means is that the signal will appear stronger but as soon as it rains the signal will disappear just the same as with no amplifier installed.
To reduce rain drop out there are four ways to improve the "Carrier to Noise Ratio".
1. Align the dish properly
2. Use a bigger dish
3. Use a LNB with a better "Carrier to Noise Ratio"
4. Run the cable direct to the decoder, no breaks, no splitters and no concealed wiring.
From the forums, it looks like Astro are trying to improve rain drop out by improving all 4!
If anyone has not allowed direct cable to decoder connection or even worse, kept their old dish / LNB then you have really lost out!
Most ppl here seem to get a major improvement in signal strength without an amplifier, whatever your installer says don't let him sell you an amplifier, it amplifies the signal and the noise giving no real improvement other than better numbers on the screen.
The best thing to do is to get the install done correctly and not to let the installer do a poor installation!
Think about it, the installer does a bad install with a poor signal, then he sells you an amplifier!