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dunnsept
dunnsept
Last reply · posted in C-BAND Satellite Discussion

corotor & f/D calcs

OK, so my original corotor broke, ordered a new one, and it showed up last night. I put my LNBs on it, got it setup, and figured that now was a good time to re-check the f/D setting.
somebody please verify my calcs:
so, 108" dish, that's 17" deep should give an f of 42.8
so my f/D is .39
I think my buttonhook might be off or sagging because I get the best signal at 36 on the feedhorn.
anyway, so I put the new corotor II + on and get... nothing.
I think my LNB is dead, so I put on an old one and now I'm getting V but no H. so I don't think my feed is clocked properly, I was doing this around 9:15 and it was gettin kinda hard to see. (yes, the servo was moving)
anyway, anybody have any recommendations for a C-band LNB?
I was using was an Eagle Aspen SLT+ and I was quite happy with the results on that one. I think what's on there now is actually a Norsat, but it's original to the dish which puts it at about 25 years old.
Used to get Q of 99 and ebno of 11 on W5 with the SLT+, now I'm getting Q of 70 and ebno 6.8 with everything set as it was, just the older LNB
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dunnsept
dunnsept
that's a good question. I do not know what brand it is.. no labels or markings of any kind on it. 9' mesh with a buttonhook lnb arm. that's about all I can say about it.
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Cham
Cham
Norsat is a good LNB, have had good luck so far.
A PLL might be a good option when getting into S2-8psk... Mine is 0.5MHz stability but I havn't tried it with an HD receiver yet. Soon I hope!
-C.
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P
pendragon
It isn't terribly surprising that setting a lower f/D could lead to a better signal. After all most feeds are designed to taper off well before the edges of the dish. By using a lower f/D setting, you'll be using more of your dish. That's more gain and a tighter beamwidth. The danger of going too far is you'll start to raise your noise floor. I've been meaning to write a thread about f/D denial, because if you're careful, setting the 'wrong' f/D on your feed can provide very nice improvements. Some other time.

Getting the focal length set correctly should be your highest priority. With a corotor the focal point will normally be a bit inside of the feedhorn. Setting the f/D isn't quite as critical, but it's usually easier to make the adjustment before mounting the feedhorn as you probably won't need to change it.

I doubt that a PLL LNB will lead to a noticeable difference. A regular LNB with a decent frequency stability should be good enough. Looking at the specs, the equivalent noise temperature is a rough guide, but I expect some LNB manufacturers are not entirely honest about this spec. If the phase noise specs are given and are low, that is probably more likely to help on high rate, high FEC, 8PSK,... I'm using Norsat 8115s and those are very good performers for their price point. Something a little less would work well, too.
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dunnsept
dunnsept
well, thanks for all the input. I went back last night and reset the feedhorn to 39. no signal at all. just in case, I rotated it through about 80 degrees. no signal at all.
pushed it in to 36, put it back to about an 11 o'clock position, voy oh lay! signal.
tweaked it a bit and all's fairly good again. My Q/ebno is nowhere near as high as it used to be with the other LNB, but is fairly good.
anyway, I then got out the tape measure and followed the directions in the corotor installation to measure focal distance. instructions say to measure from face of dish to 1/4" inside the throat of the feedhorn, with the scalar at 36, it puts the point 1/4" inside the throat to the focal distance of the dish.. at least mighty close to it. so, I guess something's just not right with the buttonhook on my dish.

I plan on doing some more testing/tweaking this weekend, make sure the feed is centered etc.
but I think I'll still pickup a new LNB to see what sort of difference it makes.

and yes, I do use this dish along with a pansat 2500 for DVB and a TT3600 for DVB-S2. I haven't tested it out yet but will this weekend. I was never able to lock RTN with it, but had a good pic on other S2 signals
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cruzin
cruzin
dunnsept said:
well, thanks for all the input. I went back last night and reset the feedhorn to 39. no signal at all. just in case, I rotated it through about 80 degrees. no signal at all.
pushed it in to 36, put it back to about an 11 o'clock position, voy oh lay! signal.
tweaked it a bit and all's fairly good again. My Q/ebno is nowhere near as high as it used to be with the other LNB, but is fairly good.
anyway, I then got out the tape measure and followed the directions in the corotor installation to measure focal distance. instructions say to measure from face of dish to 1/4" inside the throat of the feedhorn, with the scalar at 36, it puts the point 1/4" inside the throat to the focal distance of the dish.. at least mighty close to it. so, I guess something's just not right with the buttonhook on my dish.

I plan on doing some more testing/tweaking this weekend, make sure the feed is centered etc.
but I think I'll still pickup a new LNB to see what sort of difference it makes.

and yes, I do use this dish along with a pansat 2500 for DVB and a TT3600 for DVB-S2. I haven't tested it out yet but will this weekend. I was never able to lock RTN with it, but had a good pic on other S2 signals
Click to expand...
Hope you get it all working, I have a question. as I am not familiar with the type of lnb you are using but was interested that you were trying to get RTN. is it the RTN that is on the sat at 83* amc9? I am setting up a c band and have bolted a ku lnb on the side of the scalar and plan on trying to get some ku sats when I get it moving properly as I am having trouble with the mover and or the new gbox. I must be fairly close to you as I am about 35 miles west of mt pleasant.
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Ham Radio 2.0
· posted in Ham Radio 2.0

The Best Black Friday Deals for Off-Grid Comms Right Now!

Time for another AWESOME video from Ham Radio 2.0!


View: https://www.youtube.com/watch?v=CFoqfrcM8pw


Direct YouTube Link - The Best Black Friday Deals for Off-Grid Comms Right Now!
Ham Radio 2.0 Website
Ham Radio 2.0 on Facebook
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TWiT Tech Podcast Network
· posted in TWiT Tech Podcast Network

AI Hiking Advice Nearly Turns Deadly on Mount Shasta #shorts

Time for another AWESOME video from the TWIT Network!


View: https://www.youtube.com/shorts/V6XzeaKDC0Y


Direct YouTube Link - AI Hiking Advice Nearly Turns Deadly on Mount Shasta #shorts
TWIT's Website
TWIT Live Feed
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TWiT Tech Podcast Network
· posted in TWiT Tech Podcast Network

Google's AI Ultimatum for Schools

Time for another AWESOME video from the TWIT Network!


View: https://www.youtube.com/watch?v=yH-9zj0f7jQ


Direct YouTube Link - Google's AI Ultimatum for Schools
TWIT's Website
TWIT Live Feed
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TWiT Tech Podcast Network
· posted in TWiT Tech Podcast Network

Religious Exemption from Using AI?

Time for another AWESOME video from the TWIT Network!


View: https://www.youtube.com/watch?v=8m4uwajewUU


Direct YouTube Link - Religious Exemption from Using AI?
TWIT's Website
TWIT Live Feed
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TWiT Tech Podcast Network
· posted in TWiT Tech Podcast Network

The Binance Crypto Heist

Time for another AWESOME video from the TWIT Network!


View: https://www.youtube.com/watch?v=Zd5TCAV3Cek


Direct YouTube Link - The Binance Crypto Heist
TWIT's Website
TWIT Live Feed
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Lon.TV
· posted in Lon.TV

HP’s Answer to the MacBook Neo? OmniBook 5 14 Review

Time for another AWESOME video from Lon Seidman of LON.TV!


View: https://www.youtube.com/watch?v=o62FsJ2V5Cc


Direct YouTube Link - HP's Answer to the MacBook Neo? OmniBook 5 14 Review
The Official LON.TV Website
Lon on Facebook
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ewindowman
ewindowman
Lifetime Supporter
Last reply · posted in DISH Network Support Forum

Dish Bankruptcy - Business as Usual

Looks like dish is Bankrupt. Filling tomorrow Tuesday June 30th
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nelson61
nelson61
Washington Post

SpaceX has held talks with Boost's parent company EchoStar in recent months about launching its own signature wireless service through a deal with the company, according to two people familiar with the negotiations.
Musk, the SpaceX CEO, has discussed the deal personally, meeting with EchoStar chairman Charlie Ergen last month, according to the people. The potential deal may result in SpaceX acquiring Boost Mobile or SpaceX gaining access to its network, which it leases from AT&T and T-Mobile US, the people said.
Access to those lease agreements would be a coup for SpaceX. The back door would allow Musk to make a play for a U.S. wireless market that equity research firm MoffettNathanson estimates is worth $235 billion. But the proposed service may need consent from those carriers for the service to actually launch, the people said.
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Scott Greczkowski
Scott Greczkowski
nelson61 said:
Washington Post

SpaceX has held talks with Boost's parent company EchoStar in recent months about launching its own signature wireless service through a deal with the company, according to two people familiar with the negotiations.
Musk, the SpaceX CEO, has discussed the deal personally, meeting with EchoStar chairman Charlie Ergen last month, according to the people. The potential deal may result in SpaceX acquiring Boost Mobile or SpaceX gaining access to its network, which it leases from AT&T and T-Mobile US, the people said.
Access to those lease agreements would be a coup for SpaceX. The back door would allow Musk to make a play for a U.S. wireless market that equity research firm MoffettNathanson estimates is worth $235 billion. But the proposed service may need consent from those carriers for the service to actually launch, the people said.
Click to expand...
Can't remember where or who I saw predict this. :D

It wouldn't surprise me to see Elon soon own all of DISH / Echostar in the future.
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Bruce
Bruce
Scott Greczkowski said:
It wouldn't surprise me to see Elon soon own all of DISH / Echostar in the future.
Click to expand...
Again, why would Musk want a TV Service, specially one that is losing over a million subscribers a year.

Phone service…maybe, but not TV.
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Scott Greczkowski
Scott Greczkowski
Bruce said:
Again, why would Musk want a TV Service, specially one that is losing over a million subscribers a year.

Phone service…maybe, but not TV.
Click to expand...
I know he wants TV. He wants to deliver EVERYTHING to EVERYWHERE.
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Bruce
Bruce
Scott Greczkowski said:
I know he wants TV. He wants to deliver EVERYTHING to EVERYWHERE.
Click to expand...
Again, if so, why would he want Dish/Sling of all the providers?

He could deliver anything without actually owning, for example, watching the Lions game in my Tesla Y on it's screen via the YT app, while on the way to my future in-laws on Sunday.
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Bruce
Bruce
www.lightreading.com

SpaceX boldly goes into 'huge' 5G network rollout with Qualcomm

After trying satellites and small cells, Elon Musk's SpaceX is to build a terrestrial mobile network across tens of thousands of sites with Qualcomm.
www.lightreading.com
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Bruce
Bruce
nelson61 said:
Washington Post

SpaceX has held talks with Boost's parent company EchoStar in recent months about launching its own signature wireless service through a deal with the company, according to two people familiar with the negotiations.
Musk, the SpaceX CEO, has discussed the deal personally, meeting with EchoStar chairman Charlie Ergen last month, according to the people. The potential deal may result in SpaceX acquiring Boost Mobile or SpaceX gaining access to its network, which it leases from AT&T and T-Mobile US, the people said.
Access to those lease agreements would be a coup for SpaceX. The back door would allow Musk to make a play for a U.S. wireless market that equity research firm MoffettNathanson estimates is worth $235 billion. But the proposed service may need consent from those carriers for the service to actually launch, the people said.
Click to expand...
If Musk really wants to buy Boost, he might get a great price once Dish Wireless is out of Chapter 11.

Boost just lost 182,000 subs in the 3rd quarter-

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M
man00
Is Dish like Iran in one way...they both will totally collapse by end of week :)
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Foxbat
Foxbat
Other than the price, my experience with Boost is not that different than what I experienced with my years with Cricket. I will be curious to see what happens if SpaceX takes the reins.
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S
slow_poke_pete
Bruce said:
Again, if so, why would he want Dish/Sling of all the providers?

He could deliver anything without actually owning, for example, watching the Lions game in my Tesla Y on it's screen via the YT app, while on the way to my future in-laws on Sunday.
Click to expand...
dish has new sats dtv does not
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Scott Greczkowski
Scott Greczkowski
Staff member HERE TO HELP YOU! Cutting Edge
Last reply · posted in The Chit Chat Club

Song Name Game Part 3!

Sometimes a thread gets so many posts in it that is can cause issues for the server so that why today we introduce The Song Name Game Part 3!

So let the game continue!

The last song was added by Bobby who posted...

One Meat Ball - Andrews Sisters

CONTINUE ON AND HAVE FUN! WELCOME HOME TO SATELLITEGUYS.US!

Here are the original rules for the game as posted by WebbyDude back in 2006. http://www.satelliteguys.us/threads/68645-Song-Name-Game

Just name a song title and the band who performed it. The next person does the same thing, but needs to list a song title or band name which includes a word from the previous entry. Pick songs from any genre.

Example:

Long Live Rock and Roll -- Rainbow

Rainbow in the Dark -- Dio

Another example:

Ride the Lightning -- Metallica

Lightning Strikes -- Ozzy Osbourne


Get it?


An additional note: we all know that song titles, sometimes, use profane words. Because this is a family friendly website it is advised that you clean up that title up a bit. This is accomplished by using something like sh!t instead of the real word. Thanks....
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gms49ers
gms49ers
Shooz - Styx
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dishstaller
dishstaller
Too Much Time on My Hands - Styx
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sdfntx
sdfntx
Time Has Come Today - The Chambers Brothers
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long_time_Dish
long_time_Dish
No Time - The Guess Who
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hwkn
TIME Won't Let Me-The Outsiders
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dishstaller
dishstaller
Pub Member / Supporter Lifetime Supporter
Last reply · posted in The Chit Chat Club

I think we could all use a laugh - Rodney Dangerfield on Carson

Good...simple humor. Enjoy


View: https://www.youtube.com/watch?v=E92AtfTLge4

View: https://www.youtube.com/watch?v=HJy0WnejlF4
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dishstaller
dishstaller
Sorry for posting the wrong link. Just corrected it.
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dfergie
dfergie
I loved it when Rodney was on the Tonight Show...
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Foxbat
Foxbat
dishstaller said:
Sorry for posting the wrong link. Just corrected it.
Click to expand...
Thanks, I wasn't sure if you had the wrong Subject or the wrong YouTube link.
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osu1991
osu1991
Was a Don Rickles fan. I've dvr'd most of his appearances on Carson from the antenna tv replays.

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dishstaller
dishstaller
More Dangerfield rapid fire on Carson.


View: https://www.youtube.com/watch?v=scEQFHQHHhU
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dishdude
dishdude
Rodney Dangerfield is great. One of his best one liners - "My wife likes to talk to me during sex, last night she called me from Florida!"

Jackie Gleason is another one of the greats.


View: https://youtu.be/ciUV77AzIB4
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dfergie
dfergie
Staff member HERE TO HELP YOU!
Last reply · posted in Movie Talk

Godzilla Minus Zero


View: https://youtu.be/n-NDYWPXpKg?si=hcI4ueMkFCreZ8Qq
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primestar31
primestar31
dfergie said:

View: https://youtu.be/n-NDYWPXpKg?si=hcI4ueMkFCreZ8Qq
Click to expand...

Wait, didn't this one come out a few years ago? It was all in Japanese. It was also VERY good!

OK, looked it up, that was Godzilla Minus One
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Bruce
Bruce
primestar31 said:
Wait, didn't this one come out a few years ago? It was all in Japanese. It was also VERY good!

OK, looked it up, that was Godzilla Minus One
Click to expand...
At theaters, only in Japanese, on Disc and Netflix, available in English.
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Foxbat
Foxbat
New trailer has dropped:
​
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dishstaller
long_time_Dish
long_time_Dish
Looks good! I'm interested...
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