rgormley

thanks druid, yep have gorbtrack, GREAT program..

I will check the dec-var link....

rgormley

i have one of these c/Ku lnb but no instructions...

PBI Ku&C½Æ¦X¶°ªi¾¹(Turbo-4200-CK17) - ÅS¤Ñ©ç½æ--²³æ¡B¦nª±¡B§K¶O¡B¦w¥þ

A: for my first run at getting a signal can i just hook up one of the bands only? say the KU so i can point a strong signal (optusC1)

B: looking at the link what is C and KU output?
on the back of the unit (centred) there is a red dot, what does that mean?

C: how far should the lnb stick out (plastic cap end) from the mount towards dish.

D: what’s the bit of black rubber tape for (came in the box wit the lnb mount)

E: what angle should the lnb be on? as viewed from the rear looking into the dish
it has a small arrow stamped on the back, what does that indicate?

Thanks,
Richard

beer4life

G'Day,
Methinks the KU first.

I've no idea. Just connect and see if background noise increases on either.

Central, but may be able to tweak later.

That's self amalgamating tape to water proof the connectors, after every thing is adjusted. Cut off 6 to 8 inches and wrap it around the co-ax connectors while stretching a little.

That arrow indicates the vertical position when the dish is pointing True North. Now there will have to be a trade off with adjustment of the best H and V signal. Possibly the best way to adjust. is to twist in the holder and mark the strongest signal for H and V on Optus C1, then adjust in between.
Basically this is caused by the offset of Optus Satellites of about 45 degrees. It amounts to this, that you cannot hope to achieve maximum signal when using dual band, and/or multiple Sats with different preset skews. There are other solutions, but not for the tyro.
Electro/mechanical or multiple LNBs. Can get very expensive.
Don't worry about that for now, as long as you are aware of the problem.

Kindest Regards, " The Druid "..........

__________________

MrElectricity

I had a C/Ku that I tried but could not get it to run, pain in the ass!

__________________
It's hard to make a come back when I havn't been anywhere
I finally got my head together, now my bodies falling apart.
為什麼不做你被塞滿

rgormley

Have the main pole and dish up (pole was spot on after 2 small shims inserted on the top bracket.

the dish is very easy to lift so that was quite easy to get up and mounted (one man show all the way so far)

the cables have been run into wall plates in the house near the tv.


now the hard part.... found optus c1 and pas 8 no probs but could not get anything over to the west.

went up on roof and backed of the declination to 0 and rotated the lnb, i then got Asias3 and gods knows what other sats (idian stuff) but signal on optus C1 has dropped??


i presume there is a trade of to skew versus what satellites i wish to get?

why when i back the declination of to 0 i got more birds? (over to asiasat3s)

hhhmm need to find a tutorial on tuning sats. it`s bloody hard even know what sat you pointing at. other that get a sig, then blind scan and from the results guess the sat? and then log/map it on a gorbtrack chart

Cheers,
Richard

beer4life

__________________

rgormley

ok have the sat`s coming in now...

if i point to a sat then hit blind scan, i get such channels as
10.736(V)24.993

where the heck can i get a list of what satellite it`s coming from so i can program the presets/groups

at the moment it`s pot luck if i get some sort of recognizable station id (like i found a Jakarta news service on palpapa2) so i can setup this group.

Thanks.....

beer4life

G'Day,
Sorry, my mistake, I thought that you already had this site for Sat info.
Asia & South Pacific - LyngSat

Kindest Regards, " The Druid ".

__________________

rgormley

what i want to know is there a list of freq`s that i can print.

Or is it a case of going to lyngsat and printing of all the sat freq`s page by page by page, seems rather laborious? or is there a better way to get a freq listing?

doeas lyngsat have a search engine? to make finding the freq quicker?

beer4life

G'Day,
I know what you mean and to the best of my knowledge, no.
Would be rather a waste of time as when you lock a sat, you know pretty close which it is. Once you identify one, and move to E/W, easy to work out which is which. often they have promo channels to identify.
Here's one little tip for sorting out the Optus sats, D2,C1 and D1. Next year, D3 will be co-located with C1.
Set up C1 on your menu with 12367 Vert/27800 SR, VPid 1121, APid 1122 and PCR 1121. This is a unique transponder on C1 and helps to identify it as distinct from the promo #12407 which is on the others and causes confusion. Once you lock on that, just do a sat scan for the channels.
On that same transponder, you can make another TP entry with the same data, except make the PCR 4385. That will give you the FTA "Al Jazeera" English channel. Apart from some bias, not a bad channel.
What's written in Lyngsat, not quite right for the PCR.
I hope that keeps you out of mischief for a while.
Kindest Regards, " The Druid ". ........

__________________

rgormley

On this dish should the central black round backing plate in the middle of the dish (not the outside disc) should the concave centre be to facing towards the lnb or should i have it so the convex centre is pointing towards the LNB ?

I figure set as concave as to gather and focus the beam towards the lnb?

See this link note the disc is set as convex (may have to change??)

http://home.exetel.com.au/rgormley/DSC03688.JPG

beer4life

G'Day, I'm not familiar with that dish, but common sense would suggest that the washers attached to the disc indicate that is the side where the nuts go.
Why is one nut missing? Not you, that would make two!
Kindest Regards, " The Druid ".......

__________________

rgormley

i have the system setup and all is working now.
As many people have pointed out there will be a mid point for the C & /KU settings. i have the uni lnb set for c band (will not get any KU) at the moment.

BUT i have noted the back end of the KU section can be rotated in 4 positoins (4x fixed ku skew settings)
the question: as i have the C band skew setup nicly, can i rotated the ku back end to also get ku band by fixing the skew angle" even if this means that the backend may fall into a angle that the 4 fixing screws dont align (i would secure via a hose/jubile clip.

is this feasable to get c + KU of the one lnb (KU optimised via a rotation of the backend of the lnb)

hope this is clear enough (my question that is!)

rgormley

I have a small problem, where i can tune all the sats on the arc, thaicom5 to PAS-2, I store the location on the V-box and if i recall the birds on the ends of the arcs it wont quite "lock" on the signals and i always have to manually tweak the actuator position.

Asiassat3s to say optusC! It`s perfect, will track and lock no problem.

it`s as if when the actuator is nearly fully extended is loosing it`s accuracy.

if i go to say pas8 i have to tweak back a little say 5 clicks on the V-box

Also noted the black bracket (120mm long with 3 X 10mm holes) that i origionally fitted to the back the polar mount was taken of by the guy that helped me with the aligment of the dish.

Without the bracket i noted the actuator struggles on the ends of the arc

any ideas???

Godzilla

Are all your bolts tight?

If you shake the dish do any of the joints/bolts give?

I always use to tighten the main bearing more than the manufacturer to take up alot of play.

Are you sure your actuator hasnt gone over its maximum limit and gone off the actuators threads? It will come back if you give it a few positioner movements back again.

Maybe you need to remount your actuator a little further into the mounting bracket so it doesnt need to extend itself so far out.

rgormley

yep all bolts tight (very) with added nylock nuts and loctite in some places.
main pivot bolt is very tight.
maybe i may have to remount the "extra" actuator bracket that the sat guy took off?
i dont think the actuator has gone of it threads (i have set hard and soft limits to prevent this)

i think it`s just to much of an angle to be accurate at the ends of travel?
stroke/torque?

Godzilla

No it reads pulses one at a time, its pretty accurate.

rgormley

ok

"Maybe you need to remount your actuator a little further into the mounting bracket so it doesnt need to extend itself so far out."

yes this could be a factor, will try to put the bracket back on (will give a better angle for the actuator, and thus not have to come out so far.