hi,
I have offset c-band setup. So far i could scan most of the TP but not all has reached 60% signal quality. If i focus on one single TP others will loose its quality. Any Suggestions or TIPS with regards to tuning. Or i just add another lnb/disk for certain TP.
Thanks....
Mars
How to Tune best for offset c-band setup
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Re: How to Tune best for offset c-band setup
With an offset dish, the signal that travels to the top of the dish and then to the LNB travels longer than the signal that hits the bottom of the dish to the LNB.
This means there is a delay of the longer traveled signal.
This delay means that the signals are not all arriving at the same time and this degrades the signal.
That is why C band dishes are prime focus for anything over 1000-1200mm.
You can check that your LNB is in the best focal position by pointing the dish at the sun and use a small mirror to reflect the sun onto the LNB.
You can then move the mirror around the dish to check if all the dish surface is "Pointing" at the LNB.
Also check your "Skew" the rotation of the LNB for your sat.
This site offers a good calculation of skew.
Dishpointer.com
Owen
This means there is a delay of the longer traveled signal.
This delay means that the signals are not all arriving at the same time and this degrades the signal.
That is why C band dishes are prime focus for anything over 1000-1200mm.
You can check that your LNB is in the best focal position by pointing the dish at the sun and use a small mirror to reflect the sun onto the LNB.
You can then move the mirror around the dish to check if all the dish surface is "Pointing" at the LNB.
Also check your "Skew" the rotation of the LNB for your sat.
This site offers a good calculation of skew.
Dishpointer.com
Owen
Dishes; 3x3m, 2.4m and 4.1m, 10+ ku, 2 movers, USARLS. V8 Combo, Pro, V8 Golden, Nova V8Pro2, GTC, Super.V7HDs, Combo and V7s V7Plus Finder, Finder-Meter V8X / UHD V7Pro GT/XCombo. Sats 100.5E to 177W. I'm a Sat hobbyist who helps out.
Re: How to Tune best for offset c-band setup
Feralkiwi wrote:With an offset dish, the signal that travels to the top of the dish and then to the LNB travels longer than the signal that hits the bottom of the dish to the LNB.
This means there is a delay of the longer traveled signal.
This delay means that the signals are not all arriving at the same time and this degrades the signal.
That is why C band dishes are prime focus for anything over 1000-1200mm.
You can check that your LNB is in the best focal position by pointing the dish at the sun and use a small mirror to reflect the sun onto the LNB.
You can then move the mirror around the dish to check if all the dish surface is "Pointing" at the LNB.
Also check your "Skew" the rotation of the LNB for your sat.
This site offers a good calculation of skew.
Dishpointer.com
Owen
Very good points, all of them.
In the end it seems to me, that the best is
put the antenna where more signal give you for channels
than interests you.
The idea of the mirror is very good and brings out doubts.
La mente es como un paracaídas, no sirve si no se abre...
Re: How to Tune best for offset c-band setup
I will try....Feralkiwi wrote:With an offset dish, the signal that travels to the top of the dish and then to the LNB travels longer than the signal that hits the bottom of the dish to the LNB.
This means there is a delay of the longer traveled signal.
This delay means that the signals are not all arriving at the same time and this degrades the signal.
That is why C band dishes are prime focus for anything over 1000-1200mm.
You can check that your LNB is in the best focal position by pointing the dish at the sun and use a small mirror to reflect the sun onto the LNB.
You can then move the mirror around the dish to check if all the dish surface is "Pointing" at the LNB.
Also check your "Skew" the rotation of the LNB for your sat.
This site offers a good calculation of skew.
Dishpointer.com
Owen
Thanks.. owen
S24 software request
morning, may you kindly update the powevue software for s24 it has gone off for days now.
regards
regards
Re: S24 software request
It has been gone for less than 24 hours when you posted this.kudzi wrote:morning, may you kindly update the powevue software for s24 it has gone off for days now.
regards
Owen
Dishes; 3x3m, 2.4m and 4.1m, 10+ ku, 2 movers, USARLS. V8 Combo, Pro, V8 Golden, Nova V8Pro2, GTC, Super.V7HDs, Combo and V7s V7Plus Finder, Finder-Meter V8X / UHD V7Pro GT/XCombo. Sats 100.5E to 177W. I'm a Sat hobbyist who helps out.