Feedhorn probe

[cappy29]

Hi, been trying to figure out why my signal has dropped on my dish as i stated in another post it's been about four years since i last used my bud,the last time i used it i had a motorola dsr 922 but don't have it now lended it to my uncle, i now have a GI dsr922 so far i pretty much checked everything just checked the feedhorn throat no bee's hive or anything like that in there the only thing i can see is very light corrosion like white stuff on the V shaped piece that's at the end of the throat where the blue cover slides on,does anybody know if that very light white corrosion will cause signal problem's if so can it be clean gently with anything.

 

[linuxman]

The white powdery stuff around the inside of the feed-horn shouldn't make a lot of difference, but if the probes are corroded, that might make a huge difference.

Can you get detailed pictures of the v-shaped probe at the mouth, and more importantly the probe at the back used for C-Band?

Second question. I assume that the servo motor is working properly. If it isn't the skew might be adjusting right, and can kill the signal.

Try G1 transponder 11 and 12 and make sure the polarity changes properly. 11 is Horizontal, and 12 is vertical. If both channels don't come in without sparklies, the skew may be off.

Also, what LNB are you using? Brand, and temp?

Let us know and we'll try and help.

 

[cappy29]

Skew

The white powdery stuff around the inside of the feed-horn shouldn't make a lot of difference, but if the probes are corroded, that might make a huge difference.

Can you get detailed pictures of the v-shaped probe at the mouth, and more importantly the probe at the back used for C-Band?

Second question. I assume that the servo motor is working properly. If it isn't the skew might be adjusting right, and can kill the signal.

Try G1 transponder 11 and 12 and make sure the polarity changes properly. 11 is Horizontal, and 12 is vertical. If both channels don't come in without sparklies, the skew may be off.

Also, what LNB are you using? Brand, and temp?

Let us know and we'll try and help.

Hi, yeah servo motor seem's to work fine and channels match polarity but channel 12 is very poor signal of 70 with fairly heavy sparkles, the lnb i put on is pretty much new it did sit in the box it came in but in side my house i actually just put it on the other day ago because i had the exact same one on there but it went bad from sitting for about 4 years the lnb is from skyvision it's a precision high stable 15k lnb,also tried adjusting the dish side to side on C4 channel 9 and managed to get a fairly clear picture but signal is only around 72 not sure if i will be able to see the probe in the back with out sliding out the throat piece,as far as the skew goes it look's to set correct checked skyvision site and it says when the dish is pointing south the KU -band lnb should be at 10 0'clock and C-band lnb at 4 0'clock mine looks to be pretty much right at that and haven't touch the feedhorn at all since the last time i used it and had a really strong signal for where it's currently set.

 

[linuxman]

Ok, move the dish to G1, and change to channel 12.

Hit the buttons on the remote:
Options
6
4
4
Choose G1 and hit ok.
Now you see the programming screen for G1 and channel 12 should be vertical.

Arrow down to the skew setting and use the side arrow keys to change the settings until you get the best picture. You can also use this setting to move the dish from side to side etc.

Then use the channel down key on the remote and change to channel 11, repeat until you get the best signal.

Change back to channel 12 and make sure you still have good signal.

Press go back and save the work you have done.

See if that helps clear it up.