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MMDS Set-up Complete Beginner
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claret08
Suspended due to non-functional email address
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18. March 2008 @ 08:54 |
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Hi
your default freq on the chorus box wont be suitable for the downconverter, its a 662MHz downconverter.
Not sure if you can change the freq on that box
You need a box-T, eurovox TX or dreambox T for use with that aerial
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CapRogers
Newbie
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18. March 2008 @ 09:38 |
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So should i set it to 662000khz?
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claret08
Suspended due to non-functional email address
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18. March 2008 @ 09:42 |
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What is it set to currently?
what ever it is just add 440MHz or 440000KHz to it
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CapRogers
Newbie
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18. March 2008 @ 09:46 |
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It says FREQ.(khz) 218000 is the signal information part of the box
if i change it to 626000 there is a slight improvment but still not enough signal strength
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CapRogers
Newbie
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18. March 2008 @ 10:23 |
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it was 218 i added the 440 to get 662 when i entered that into the ch*r*s box its automatcally changes it to 662116 khz and I get a small amount of quality but no matter where i point the aerial this doesnt improve. It will not let me change freq in the Network configuration part of the Ch*r*s box could this be the problem
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claret08
Suspended due to non-functional email address
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18. March 2008 @ 10:58 |
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Ah right
You need the default freq to read 658MHz or 658000KHz i think
then the central freq will be 662MHz and every +8MHz
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CapRogers
Newbie
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18. March 2008 @ 11:10 |
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thats brilliant thanks, I have just taken the aerial down and am about to put it back up pointing in a different direction because in my area all the chor*s aerials point in 2 different directions
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mgb17
Senior Member
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18. March 2008 @ 12:37 |
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You have to use band scan at the chorus box.
A network scan is not working with the wrong downconverter.
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CapRogers
Newbie
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18. March 2008 @ 13:05 |
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Im just putting the aerial back up now. Where would the band scan option be found. I can choose a bandwitdh option of either 8 or 9
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CapRogers
Newbie
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18. March 2008 @ 13:09 |
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sorry the otion is 7 or 8
and thanks for all the help everyone
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mgb17
Senior Member
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18. March 2008 @ 13:50 |
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Set the Network Type from "Transponder" to "Automatic".
Btw bandwidth is 8.
Its also a good idea to notify down all settings first.
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CapRogers
Newbie
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18. March 2008 @ 13:56 |
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Cheers i will give it a go tomorrow as i had to give the box back there
gd tip with noting down all the feilds incase i mess my friends box up
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CapRogers
Newbie
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19. March 2008 @ 08:58 |
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There is no setting for auromatic transponder i can find on the chorus box
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CapRogers
Newbie
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19. March 2008 @ 09:11 |
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The old downconverter has these details on the side
RF = 2500 ~ 2686MHz
IF = 214 ~ 400MHz
Gain = 30db
Would this get a better signal from a chorus box?
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claret08
Suspended due to non-functional email address
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19. March 2008 @ 09:12 |
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well it will be easier as these are the downconverters used with chorus fitted equipment
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CapRogers
Newbie
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19. March 2008 @ 09:21 |
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yeah it would be easier for the chorus box
Im planning to get the itgate black pearl because im led to believe they are easier t use and dont have to update them as much
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mgb17
Senior Member
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19. March 2008 @ 15:30 |
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You need a box with dvb-t tuner for chorus mmds and there should be a setting network type = transponder at a sagem box from chorus.
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CapRogers
Newbie
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20. March 2008 @ 07:48 |
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Hi everyone thanks for all the help. I got a signal with the old MMDS aerial on my friends box. Im about to order the Itgate black pearl with a T tuner. once again thanks for the help. I will update you when i get the reciever to let you know how it works out
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CapRogers
Newbie
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29. March 2008 @ 13:34 |
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Hi Everyone
I got the black pearl (itgate 220)
did a scan and got 127 channels on chorus
thanks for all the help
Does anyone on ireland get racing UK on chorus MMDS?
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AfterDawn Addict
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29. March 2008 @ 14:31 |
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Im not too sure about MMDS , try a manual scan on 427.000
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Fano
Member
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29. March 2008 @ 19:19 |
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Originally posted by claret08:
Nice one alec76 glad you got it working.
Told you the aerials were fine from SatandCable.
I think I have noticed a serious flaw of those Yagi aerials.
I have seen in a couple of instances what I believe to be serious galvanic corrosion on the rods.
The rods when left exposed to the harsh Irish climate for only a few months has caused them to become covered in a white or black powder and caused signal degradation in rain.
The rods obviously arent coated in a corrosion resistant substance similar to those manufactured by Cal Amp.
The spacing between the washers is ~2.5cm ,which means the rods are designed for a wavelength of 3Ghz instead of 2.5Ghz.
Ideally the spacing should be 3cm.
In the vast majority of reception cases this will not make much of a difference to the signal strength.
However coupled with the corrosion problems this makes the aerials unstable in any sort of rain .
I have had a Cal Amp Yagi running for over 9 months and its rod is perfect ,as day one.
Has anyone encountered similar symptoms ?
This message has been edited since posting. Last time this message was edited on 29. March 2008 @ 19:52
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alec76
Junior Member
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29. March 2008 @ 20:25 |
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Quote:
The rods when left exposed to the harsh Irish climate for only a few months has caused them to become covered in a white or black powder and caused signal degradation in rain
The rods obviously arent coated in a corrosion resistant substance similar to those manufactured by Cal Amp
the white powder you are talking about is aluminum oxide
Aluminum is very reactive chemically but it resists corrosion by the self-protecting continuous thin layer of oxidation which forms quickly on the nascent aluminium surface when exposed to oxygen, water or other oxidants and prevents further corrosion.
i mean,it is normal :)
RAIN IS cause OF signal degradation , NOT A white powder :)
btw .i've ordered CAL AMP downconverter - only 32 euro (inc.delivery from states)
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Fano
Member
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30. March 2008 @ 08:10 |
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Originally posted by alec76:
Quote:
The rods when left exposed to the harsh Irish climate for only a few months has caused them to become covered in a white or black powder and caused signal degradation in rain
The rods obviously arent coated in a corrosion resistant substance similar to those manufactured by Cal Amp
the white powder you are talking about is aluminum oxide
Aluminum is very reactive chemically but it resists corrosion by the self-protecting continuous thin layer of oxidation which forms quickly on the nascent aluminium surface when exposed to oxygen, water or other oxidants and prevents further corrosion.
i mean,it is normal :)
RAIN IS cause OF signal degradation , NOT A white powder :)
btw .i've ordered CAL AMP downconverter - only 32 euro (inc.delivery from states)
Yes the white coating is probably aluminium oxide as you said.
Let me clarify my comments.
I havent seen the white powder on the Satandcable rods I have seen it on a different manufacturers,and it seems harmless,the signal is excellent ,0 ber.
The satandcable rod after exposure is covered in a black material which definitely degrades the signal even in light rain.
Rain should not affect the signal.
As soon as a drop of rain hits the rods the signal breaks up.
I have doused water over the downconverter and the cable and it has no effect.
Only when on the rod does it affect it.
I've since replaced the rod with a different one and its perfect again,even when pouring a watering can over it.lol
I have taken the rod away for examining ,its not a pretty sight.
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claret08
Suspended due to non-functional email address
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30. March 2008 @ 15:31 |
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sounds like youve got it in for satandcable Fano
:)
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chris100
Suspended due to non-functional email address
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30. March 2008 @ 15:32 |
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Hi anyone know the max distance ch***s mmds transmitters transmit as i will be buying a antenna that must be used within a distance of 15 miles
or are transmitters stationed in most town areas.Im living 7 miles from town thanks.
This message has been edited since posting. Last time this message was edited on 8. June 2008 @ 10:16
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