Quote:
Originally Posted by lumpkin666
Since you're using a BSC621-2, it won't matter. The BSC621 (the other model) uses a 22k tone to switch between C and KU, and although you can bypass the tone switch (as I did) and use either a diseqc or tone switch with unique ports to each of the two outputs (although it seems you are bypassing and just using C-Band anyhow). |
Thanks for clearing that up. I was under the impression that both the 621 and 621-2 used DiseqC... mainly because that is what the "manuals" that you find on the
Sadoun web page says. However after reading your post, I notice that the links at the Sadoun page for both 621 and 621-2 both lead to the manual for the 621-2. I looked up the manual for the 621 at
http://www.dmsiusa.com/documents/621-manual.pdf ,
{Even though the first image says 621-2, this is for the 621}
and I see that you are correct about it using the 22khz.
I am starting to wonder how many posts regarding this LNBF (particularly some I've made) have been in error because they were based on this incorrect manual link found at the Sadoun site. Like it seems like Bibber was having problems getting one band???
How did you bypass the switch on C-band? Did you take the lnbf apart? Ie isn't the switch internal? I know you can bypass the Ku side, since it connects via a coax jumper, but I wasn't sure if you could bypass the switch on C-band.
Quote:
Originally Posted by lumpkin666
It seemed to me that the C-Band port would not give a good signal when I had it on the 0mhz leg of the 22k switch. Since the c-band side is also the side that you use if you want to use the internal switch (and the internal 22k switch is set to enable the C-Band side with 22k), I'm thinking the 0k tone was confusing the internal switch on the 621. That's not supposed to happen, but that's the only explaination I have for what I was seeing (not that this matters for your scenario, but maybe someone else coming through with the BSC621 standard lnbf will find that info helpful)
So, in short, either leg of the 22k will work for either lnbf.
|
Well, I'm confused by what you're saying above. The manual says 22KHz gives Ku, and the "0" side (which is the absence of the 22khz tone, not the presence of a 0 khz tone) gives C-band. I think the switch will definately give you some insertion loss whichever leg you go through, which is why I asked about how you bypassed it, but I didn't expect it to be that noticable. Some of these switches now say that they have a 2 or 3 db insertion loss, which seems to be a lot. I've not noticed that much loss with my old
diseqC switch. I wonder if what you noticed was caused by noise coming in through the un-used Ku switch port?