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#10162
Tue 07 Sep 2004 03:25:PM
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Joined: Sep 2004
Posts: 8
Space Trainee
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OP
Space Trainee
Joined: Sep 2004
Posts: 8 |
is it true that the 2.4 solid AZURE SHINE antenna perform equaly as the 3 meter mesh antenna? and which is better?<br />I wanted to buy a biger antenna to recieve Asiasat 3S I'll really appreciate your reply guys.
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#10163
Tue 07 Sep 2004 05:06:PM
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Joined: Jul 2004
Posts: 25
Astronaut Level 1
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Astronaut Level 1
Joined: Jul 2004
Posts: 25 |
Generally, the bigger dish has more gain, but there isn't much difference between 2.4 and 3m.<br />The solid dish may have a better surface accuracy<br />(I have seen some that are worse).<br />A solid dish usually is more acceptable for weak Ku Band signals. So I guess it comes down to the price and which bands you want to use.<br /> If you're only ever going to use C band on this antenna, then mesh. If you are considering using Ku, then you should consider the solid.
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#10164
Wed 08 Sep 2004 03:45:AM
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Joined: Feb 2001
Posts: 4,142
Assistant Launch Director
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Assistant Launch Director
Joined: Feb 2001
Posts: 4,142 |
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#10165
Wed 08 Sep 2004 05:43:AM
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Joined: Sep 2004
Posts: 8
Space Trainee
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OP
Space Trainee
Joined: Sep 2004
Posts: 8 |
If you're only ever going to use C band on this antenna, then mesh. If you are considering using Ku, then you should consider the solid.<br /><br /><br />could you please explain what makes the difference for C and Ku band used on either the solid or the mesh antena?
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#10166
Wed 08 Sep 2004 07:49:AM
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Joined: Jul 2004
Posts: 25
Astronaut Level 1
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Astronaut Level 1
Joined: Jul 2004
Posts: 25 |
You can easily use C-band on a Ku dish of the same size. But generally not the other way around. In practice Ku Band does work on C-band dishes, but the mesh dish is not as efficent in reflecting Ku band signals as it is C band.<br />Think of it like the difference between using a mirror or just shiney metal to reflect light.<br />The mirror is just a better reflector.<br /><br />The next consideration is surface accuracy.<br />The wavelength is longer at C band so it is a little more tollerant of imperfections.<br />A dish may have kinks, dints and warps in it, these will effect Ku band gain more than C band.<br />Radiation is being scattered instead of being reflected where you want it to go.<br /><br /> If you think of it in terms of mirrors and light.<br />If a mirror is perfectly flat, the picture reflected is nice and clear. But if the mirror is warped, then your head may look bigger than your body.<br /><br />In simple terms you can use a solid dish for Ku and C band, but a mesh dish for C band (or lower)only.
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#10167
Wed 08 Sep 2004 08:59:PM
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Joined: Sep 2004
Posts: 8
Space Trainee
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OP
Space Trainee
Joined: Sep 2004
Posts: 8 |
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#10168
Wed 08 Sep 2004 10:09:PM
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Joined: Sep 2004
Posts: 3
Space Trainee
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Space Trainee
Joined: Sep 2004
Posts: 3 |
Hi, So if I want to recieve CBAND only which Dish is better the 2.5 solid or 3m mesh???
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#10169
Fri 10 Sep 2004 06:45:PM
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Joined: Jul 2004
Posts: 25
Astronaut Level 1
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Astronaut Level 1
Joined: Jul 2004
Posts: 25 |
I'd go the 3m. Others might say otherwise, personal choice might have more to do with the selection rather than the difference in gain :-)
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#10170
Fri 24 Sep 2004 12:19:AM
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Joined: Sep 2004
Posts: 2
Space Trainee
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Space Trainee
Joined: Sep 2004
Posts: 2 |
Is there any use in trying to receive any Cband signals on a 95cm solid (offset dish) dish that is currently only used in KUband?<br />If this is possible, How can one add a KU LNB to this and what LNB would be usable. <br />Appreciate any positive replies.<br />Nahon
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#10171
Fri 24 Sep 2004 12:29:AM
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Joined: Feb 2004
Posts: 3,815
Mission Commander
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Mission Commander
Joined: Feb 2004
Posts: 3,815 |
95cm would be to small for c-band you wouldt get much well you would get nothing you need minimum 2.3m mesh
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#10172
Fri 24 Sep 2004 07:21:AM
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Joined: Sep 2004
Posts: 11
Space Trainee
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Space Trainee
Joined: Sep 2004
Posts: 11 |
I know of one case where MTV on Pas8 C band was received on a 90cm but that is about it. <br /><br />1.5-1.8m will get a few more channels but it really opens up with a 2.3m+.
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#10173
Fri 24 Sep 2004 08:12:PM
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Joined: Sep 2004
Posts: 2
Space Trainee
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Space Trainee
Joined: Sep 2004
Posts: 2 |
Thanks for the replies folks, That is that idea down the drain. Ciouncil will not allow me to raise a dish that size. Nahon
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#10174
Sat 25 Sep 2004 02:39:AM
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Joined: Feb 2001
Posts: 4,142
Assistant Launch Director
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Assistant Launch Director
Joined: Feb 2001
Posts: 4,142 |
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#10175
Wed 22 Dec 2004 06:43:PM
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Joined: Oct 2004
Posts: 162
Astronaut Level 3
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Astronaut Level 3
Joined: Oct 2004
Posts: 162 |
so what can get beside pas8 and optusb3...with the dish?
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Joined: May 2006
Posts: 7
Space Trainee
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Space Trainee
Joined: May 2006
Posts: 7 |
iF im right or wrong this threat was past history 2004. I believe at least 2.3mesh dish is far better then other levels.<br /><br />I have 2 satellite dishes.. One is a 2.4mesh dish but strong frame and was bought in 2000. While the new dish i recently got is very very light and could easily break if not too carefully but allways coution when hail apears in summer times and it is a 2.3mesh dish. Was told these days know in 2006 the 2.3mesh dish is very good and people buy them, But your could correct me if that isn't true.<br /><br />I believe larger dish will just make no differents either it is a 2.3mesh dish but perhaps its just signal strenth differents but you get the same packages on each satellites available with a good receiver.<br /><br /><br /><br />regards<br />Pascual
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