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View Full Version : How do you align a dish that brings in too much signal for the satellite finder?



InTheSand
21-11-2007, 07:24 PM
Hi,

I've recently installed a motorised 90cm dish in addition to the fixed ex-Sky job pointing at Optus D1.

I'm having some problems with alignment on the 90cm though - partially due to the motor tracking a random arc in the sky instead of the Clarke Belt! But I know what to do to resolve that...

My problem is with basic alignment - as soon as I get anywhere near D1, the satellite finder's meter goes to 100%, even when the adjustment knob is turned all the way down. While this is OK for getting a rough fix, it's no good for fine-tuning.

I've got a slightly better fix by taking an old crappy telly plus the digibox outside and squinting at its signal display whilst trying to make adjustments from the roof, but there must be a better way than that!!!

Any thoughts?

- Ali

krs
21-11-2007, 07:30 PM
Put a 4-way power pass splitter off the LNB and then into the sat finder.
Or a long run of cable between the LNB and finder.
Anything to back the signal off.

InTheSand
21-11-2007, 07:48 PM
OK, will give that a go the next time I'm on the roof (hopefully this coming weekend!)

Thanks for the tip!

- Ali

kiwisteve
23-11-2007, 04:39 PM
I have a 20metre length of Rg6 for the same reason
don't use an F type inline attenuator unless it rated for power passing
or it will go up in smoke from the lnbf 18 volt supply feed
:D:D