c band

keebs · #1 (**permalink**) 04-27-2008, 06:42 PM

i am finally getting to the BUD project and i have lots of questions. i am replacing the old lnbf with a new c/ku BSC621. when i took off the old one i was careful not to disturb too much of existing positioning of arms and was pretty successful. my question is: the BSC621 has two sets of screw holes to attach to arms and was wondering if there was a difference? which do i use or does it matter? any tips on this procedure would be welcomed.

rainman · #2 (**permalink**) 04-28-2008, 04:39 AM

I just used the ones that fit the best keebs. but which ever set you use just use the same ones all away around.

elgemcdlf · #3 (**permalink**) 04-28-2008, 09:28 AM

I believe they are for the two types of mounting arm types. Some dishes have 3 arms and others have 4. So you would either have holes that are 90 degrees apart or 120 degrees. Not sure on button hook. I have one but have not really payed that much attention to how the scalar ring mounts as personally I just don't like how a button hook looks

keebs · #4 (**permalink**) 05-03-2008, 06:59 PM

here is what i have so far. lnbf is installed. and i attatched the actuator today. just like my little dish i start to get these feelings that i am f**king this up! take a look and tell me what you big wigs think.

rainman · #5 (**permalink**) 05-03-2008, 07:02 PM

looks ok to me keebs.

keebs · #6 (**permalink**) 05-03-2008, 07:13 PM

thanks buddy, i need these baby steps because this stuff cost money i did not have and i dont want to break it.

keebs · #7 (**permalink**) 05-03-2008, 09:22 PM

i am a little confused about setting the limit switches. any one have any simpler language on this?

i am planning to use my fortec star lifetime classic in conjunction with a V-Box. however, the fortec is set up for my KU smaller dish set up. should i erase all the info on the receiver? set it back to factory settings to start fresh with this new dish? what are the new settings for this kind of set up?

is there a site out there i can ref. for the V-Box/DVB set up? or even on here?
so many questions!! thank you all

keebs · #8 (**permalink**) 05-04-2008, 07:56 PM

my questions i have to start.

1. what position should the lnbf that is a BSC621 c/ku?

2. what should i set my lnb type on my fotec. uni or the 5150?

3. what position should my actuator be in to search for my first sat?

4. any other settings i need to change because of lnb type?

keebs · #9 (**permalink**) 05-04-2008, 08:02 PM

also this dish has no markings on it. like elv. or scales etc. i left all the settings from when it was used last which was right down the road so should that be a good starting point or is it not wise to trust it

Alphonse · #10 (**permalink**) 05-04-2008, 08:54 PM

The lnbf should have instructions, but if not position it using the mark on the casing so that it lines up with the axis of the polar mount. This gives a zero skew to all birds for good reception. Your old bud should already be aimed perfectly south. Start with a bird nearest true south to you. I'm at 103.5 west, so I could use 101 west. You can guesstimate right or left a bit and get quality in you antenna menu pretty quick. We learn by doing in this hobby so have fun tinkering and reading.

pmb1010 · #11 (**permalink**) 05-05-2008, 01:25 AM

find a C band station, if you can - closest to your highest south sat. Use that to dial in your dish alighment roughly.

THen, switch to Ku band and fine tune your LNBF on your dish once you find a signal there.
You'll find the Ku will be more fussy as far as skew and focal length but once you get something C band will fall into place.

My indicator diamond on the C/Ku pointed down (at 6'oclock).

rainman · #12 (**permalink**) 05-05-2008, 04:06 AM

Quote:

Originally Posted by keebs

also this dish has no markings on it. like elv. or scales etc. i left all the settings from when it was used last which was right down the road so should that be a good starting point or is it not wise to trust it

to check elevation on the dish use a inclinometer.

elgemcdlf · #13 (**permalink**) 05-05-2008, 02:10 PM

Your dish settings with exception of alignment on the pole for true south should be ok providing it was an operational dish at one point with current settings BUT analog C Band is far more forgiving than digital so you may need to tweak it a bit once you get going.

Settings in the receiver are going to depend on what you are doing. If you are setting up a C Band sat then you would use 5150 for the LO. If I am not mistaken the 621 is a standard on the Ku side so for the Ku sats you would set the LO at 10750. I believe the 621 uses 22Khz for switch between the two bands with on for Ku and off for C. You will need to set this accordingly as well. If the lnbf is a 621-2 (I think) it would be UNI for the Ku LO and it uses DiSEqC ports as the switch.

The UNI Ku BSC lnbf is the one I have listed in my signature. Have you checked the holes on the dish? Did it have a single C Band lnb on it or a Corotor II w/ two lnb's? Depending on your location you want to be able to see all the way left and right of your location. This means you would want the actuator extended halfway when pointed at true south. If you are limited in one direction you would offset it as it is easier to push than pull. What this means is as an example if you were at 123 you would not need much west travel so set it up as the actuator would push it's way back to 123 from the east and pull from the west since there would be few sats west of 123 you will get.

If you are blocked by something on one direction (trees, building, etc) same applies.

keebs · #14 (**permalink**) 05-09-2008, 11:49 PM

so i purchased a magnetic angle finder from sadoun but i have no idea how to take the readings or where? i feel like a dope. i am not even sure i can read the chart correctly to find my settings for declination angles and so forth. i am in Lakeland, Florida. my starting point would be AMC5 right? i went to my dish and realized i had no idea how to read this thing!?

just so there is no confusion on my part, the first thumbnail depicts how i adjust my declination correct?

the second thumbnail is my elevation adjustment
correct?

satnutwillb · #15 (**permalink**) 05-10-2008, 07:54 AM

Yes,those are the correct adjustment bolts.

1captain · #16 (**permalink**) 05-10-2008, 10:14 AM

Hi Keeps: Just like Satnut said they are the right adjustments. but you need to move you angle finder on top of the 2" x 3" tupe where the dish pivots on, not on the side shown in picts where the actuator is bolted. set the 2" X 3" tupe to 28 degrees with the treaded rod, with the angle finder, then move the angle finder to the ring that (angle finder will be up side down) that bolts to the dish then adjust you're declination adjustment ( 1st picture) so the angle finder reads 32 degrees. the 32 degrees is adding the offset for you're area to the elevation for you're area. and all this will be done wile the dish is in the bird bath position, with the high end of the 2" x 3" looking to the due north. then start you're tweaking, good luck..

keebs · #17 (**permalink**) 05-10-2008, 10:23 AM

man i guess i have smoked too much of that sticky icky???
i am still completely confused. the angle issue has me at a dead stop.
wejones has been PMing me with solutions but it looks like Greek to me.
can someone tell me what the numbers are that i need to set and how to do it? thanks for answering these questions you have answered a million times before.