Help with BSC DMS 621 LNBF

[jmag487]

Hi. I just setup one of the 6FT complete systems from Sadoun but I am having trouble with the right setup on the DMS 621 LNBF. I really am only interested in the FTA C Band stuff so do I need the dialectric plate that comes with it? And do I skip the jumper cable then for the KU? I got the MicroHD receiver with it and I just want to make sure I get all the settings right before I start struggling with aiming things. (Like should the LNB LO be set to 10750 or 5150) For now I will just use it stationary pointed to one satellite. Thanks for any help!
Jim

 

[Anole]

For C band only:
- LO = 5150
- use connector on side of LNBF. The one at the rear is for Ku
- leave OUT the dilectric slab. It's used for circular C band ONLY!

edit: ...uhhhh... which one satellite?

 

[jmag487]

Thank you! I was hoping to start with ANIK F1R for the CBC stuff.

 

[gpflepsen]

Thank you! I was hoping to start with ANIK F1R for the CBC stuff.

CBC is scrambled now. The CTV stuff is good though! There was a recent thread on picking just one satellite for dedicated positioning.

http://www.satelliteguys.us/threads/298915-If-You-Had-to-Choose-Only-One-C-Band-Satellite-Location

 

[johann12]

You do not need the dielectric plate, it is for circular signals only.
If you use the BSC 621 to receive c-band only, hook your cable up where the little box is.
On the very top/end where your KU connection is there is a arrow casted into the metal . This arrow should point toward the 9 o'clock position if the dish would be pointed at your true south amd this would give you a skew of 0 degrees. If you would need a skew of 20 degrees for the sat you want, just turn your LNBF 20 degrees counter clockwise from your 9 o'clock position looking at your KU connector.
Let the Bsc 621 LNBF stick out pass the scalar about 1 inch and that should get you close enough to get you started to make your fine adjustments.
The LO for c band should be set to 5150.

 

[jmag487]

I didn't have a lot of time last night to mess with it, but I was able to get 90% Signal Level and about 65% Signal Quality (on the MicroHD) but when I did the blind scan I only got 6 channels with French audio and pixellated video. Is that not enough signal quality? Thanks again, and I'm bummed about the CBC being gone.

 

[gpflepsen]

Which transponder are you getting? Are you sure you're on 107?

I'm on an 8' Channelmaster looking at 107 TP 4140V 30000 at SL=90 SQ=77 on a microHD. This TP carries the CTV channels, and this should be an easy signal to grab.

 

[jmag487]

I'm pretty sure I'm pointed at the right satellite. 9 transponders show up to choose from for the scan, so I'm not sure which one grabbed them, but I think it was the 4th one. I'll have to experiment some more tonight.

 

[gpflepsen]

Scan the whole range, there's quite a number on this bird, IIRC.

 

[johann12]

You may have to push the LNBF further in or out the scalar, or skew the LNBF some more either way until you get a higher Quality.
You may have to adjust your dish some more to get the Q up.
Remember to make very very small adjustments, then wait a little bit since it may take some time for the receiver to respond and then do some more adjustment if needed.
With a Q of 65 you should get a lot of channels on this satellite.

Did you set the skew right? visit dishpointer.com to get the info for your location.
It looks like that your aim is still off a little bit or you have to fine-tune your LNBF.

 

[jmag487]

Did a little tweaking and was able to get the quality up to 75% or so. Then did a rescan and got a bunch more channels! I'm still bummed CBC isn't on anymore, but oh well. Now I just have to wait for the VBox that is on back order to get going on the other satellites. Thanks to all for your help. Great source for info!
Jim