Social Feed
Hi guys, I'm new to the forum (but not FTA), and wanted to start by thanking all the contributors whose posts I read to get me going in the right direction!
I now know that a 20" Dish Network setup will not get 82W reliably (at all?) down here (in NYC), but a 30" dish should work, so I ordered the Winegard DS2077 plus a DishPro Plus LNBF from Solid Signal. I probably just turned some heads with the idea of mounting the DPP on a 30" dish
I guess I should have done more reading about LNB separation vs. focal length, but I think it's still worth a shot. if you're interested in discussing the math with me, I'm all ears.
This post is long, sorry. If you have any feedback on any portion, I'd love to hear from you. I have separated two aspects that I'm interested in: LNB spacing, and aiming.
LNB SPACING:
I started with reading the post by MJFlash: "Offset LNBs: Theory & Practice", and thought, "oh no, the LNB spacing is going to be wrong". After scratching my head some more, and reading up on spherical coordinates and how to calculate the angular separation of two points with known lat,long or az,elev coordinates, I think there is reason for hope. Here's what I've got:
DS2077 dish: d=760mm, F=448mm (F/d = 0.59 from spec sheet)
DPP LNBF: center-center spacing of two throats = 68mm
angular separation = atan (68/448) = 8.6 degrees
Now the less obvious question: what angle separates 91W and 82W from my location? My first knee-jerk answer was "9 degrees" but then I realized that's only from the earth's center (or another location 42164 km from the satellites). I am somewhat closer (many "look angle" calculators report distance to sat), and the angle ends up being 10.1 degrees. This number doesn't agree with the formulas in MJFlash's post, where he uses the difference between elevations to each sat for the vertical offset angle (I agree), and the difference in azimuths for the horizontal angle (I'm suggesting this is a problem). The problem I see with this is that azimuth lines get closer together as you increase elevation, so a 10 degree change in azimuth represents an angle smaller than 10 degrees if you're looking anywhere above the horizon. If anyone follows this argument, please let's chat!
So, assuming that 10.1 degrees is correct (again, I'd love to discuss this with any interested members), I've got a small error of 1.5 degrees between 8.6 and 10.1. What is the effect of this error? There are no satellites that close to either 91 or 82 with circular polarization, so I won't be getting interference, but I will have off-peak gain. According to a formula on Wikipedia, the half-power beamwidth of a "typical" parabolic dish is about 70*24mm/760mm = 2.2 degrees, so I will lose about 1dB of signal if I split the difference (0.75 degrees off-center for each sat). I know this isn't the best I can get, but given that I have a DPP LNBF in my hands, it seems to be the logical first step. I will end up buying a pair of single LNBs if this setup doesn't work.
AIMING:
The next issue is how to aim a DS-2077 with a dual LNB (no way to adjust offset) when the dish mount doesn't have a skew adjustment. I thought about big pliers and twisting the support arm, but then I remembered the polar mounted dish I used to have at my last place. If the dish is polar mounted, the skew takes care of itself as the dish is swept through the arc of satellites (i.e. satellites are always on a line that is parallel to the horizontal axis of the dish). So instead of mounting the dish on a vertical pole, I mount it on a pole that's tilted north at (90-my lat) degrees from vertical.
But the dish needs to be set for "-5 degrees" elevation for this to work, and the range is only 20-70 degrees. More poking around got me to think about mounting the dish upside down (with the LNB arm above the dish) to get the correct elevation. It looks pretty funny in the living room, but the math says it should work. I can post a pic if anyone wants to see it.
It's pretty cold right now, so I'm not exactly rushing to the roof to try this out this week, but I'm interested in hearing from others if they've tried a similar setup, and if it worked or not.
I'm a displaced Canadian who's pining for some curling on TV and the local news from home, and I'm a bit of an antenna geek, so this seems like a perfect project!
Thanks all,
Dave
I now know that a 20" Dish Network setup will not get 82W reliably (at all?) down here (in NYC), but a 30" dish should work, so I ordered the Winegard DS2077 plus a DishPro Plus LNBF from Solid Signal. I probably just turned some heads with the idea of mounting the DPP on a 30" dish
I guess I should have done more reading about LNB separation vs. focal length, but I think it's still worth a shot. if you're interested in discussing the math with me, I'm all ears.This post is long, sorry. If you have any feedback on any portion, I'd love to hear from you. I have separated two aspects that I'm interested in: LNB spacing, and aiming.
LNB SPACING:
I started with reading the post by MJFlash: "Offset LNBs: Theory & Practice", and thought, "oh no, the LNB spacing is going to be wrong". After scratching my head some more, and reading up on spherical coordinates and how to calculate the angular separation of two points with known lat,long or az,elev coordinates, I think there is reason for hope. Here's what I've got:
DS2077 dish: d=760mm, F=448mm (F/d = 0.59 from spec sheet)
DPP LNBF: center-center spacing of two throats = 68mm
angular separation = atan (68/448) = 8.6 degrees
Now the less obvious question: what angle separates 91W and 82W from my location? My first knee-jerk answer was "9 degrees" but then I realized that's only from the earth's center (or another location 42164 km from the satellites). I am somewhat closer (many "look angle" calculators report distance to sat), and the angle ends up being 10.1 degrees. This number doesn't agree with the formulas in MJFlash's post, where he uses the difference between elevations to each sat for the vertical offset angle (I agree), and the difference in azimuths for the horizontal angle (I'm suggesting this is a problem). The problem I see with this is that azimuth lines get closer together as you increase elevation, so a 10 degree change in azimuth represents an angle smaller than 10 degrees if you're looking anywhere above the horizon. If anyone follows this argument, please let's chat!
So, assuming that 10.1 degrees is correct (again, I'd love to discuss this with any interested members), I've got a small error of 1.5 degrees between 8.6 and 10.1. What is the effect of this error? There are no satellites that close to either 91 or 82 with circular polarization, so I won't be getting interference, but I will have off-peak gain. According to a formula on Wikipedia, the half-power beamwidth of a "typical" parabolic dish is about 70*24mm/760mm = 2.2 degrees, so I will lose about 1dB of signal if I split the difference (0.75 degrees off-center for each sat). I know this isn't the best I can get, but given that I have a DPP LNBF in my hands, it seems to be the logical first step. I will end up buying a pair of single LNBs if this setup doesn't work.
AIMING:
The next issue is how to aim a DS-2077 with a dual LNB (no way to adjust offset) when the dish mount doesn't have a skew adjustment. I thought about big pliers and twisting the support arm, but then I remembered the polar mounted dish I used to have at my last place. If the dish is polar mounted, the skew takes care of itself as the dish is swept through the arc of satellites (i.e. satellites are always on a line that is parallel to the horizontal axis of the dish). So instead of mounting the dish on a vertical pole, I mount it on a pole that's tilted north at (90-my lat) degrees from vertical.
But the dish needs to be set for "-5 degrees" elevation for this to work, and the range is only 20-70 degrees. More poking around got me to think about mounting the dish upside down (with the LNB arm above the dish) to get the correct elevation. It looks pretty funny in the living room, but the math says it should work. I can post a pic if anyone wants to see it.
It's pretty cold right now, so I'm not exactly rushing to the roof to try this out this week, but I'm interested in hearing from others if they've tried a similar setup, and if it worked or not.
I'm a displaced Canadian who's pining for some curling on TV and the local news from home, and I'm a bit of an antenna geek, so this seems like a perfect project!
Thanks all,
Dave
9 Replies
·
2658 views
C
Thanks Catamount! I'm glad to hear that this setup worked for you. I bought a Y-adaptor as well, but noticed that the part that connects to the arm is meant for a rectangular arm, and I have the D-shape. I'm going to try one sat at a time first with a centered LNB (the DPP has two "spigots" that will mount directly to the arm) to see what the best signal is for each sat on-focus, and then see what degradation there is off-axis.
I might try cutting off a piece of the arm to compensate for the length of the Y-adapter, and then modify the Y-adapter to fit on the D-arm. My only fear is once I do this, and find that for some reason I need to go with two single LNBs, I'll have to add that length back somehow. Where there's a will, there's a way
I'll let you know how it goes...
Thanks Catamount! I'm glad to hear that this setup worked for you. I bought a Y-adaptor as well, but noticed that the part that connects to the arm is meant for a rectangular arm, and I have the D-shape. I'm going to try one sat at a time first with a centered LNB (the DPP has two "spigots" that will mount directly to the arm) to see what the best signal is for each sat on-focus, and then see what degradation there is off-axis.
I might try cutting off a piece of the arm to compensate for the length of the Y-adapter, and then modify the Y-adapter to fit on the D-arm. My only fear is once I do this, and find that for some reason I need to go with two single LNBs, I'll have to add that length back somehow. Where there's a will, there's a way
I'll let you know how it goes...
The new curated multiview is now live.
While on many of the sports channels and non sports channels there is a multi view option button. It will pull up a side bar with many different multi view options.
While on many of the sports channels and non sports channels there is a multi view option button. It will pull up a side bar with many different multi view options.
4 Replies
·
178 views
Pub Member / Supporter
Cutting Edge
I created this thread on the original Edgecutter Cutting Edge Forums site. It's simply a place for those to review the latest software available for those using Windows 10 and Windows 11. To date it has received 112,559 views. I have been asked by staff to continue this thread here.
522 Replies
·
47229 views
To each there own but I've found that Windows can't do much more than Linux can. Can't have everything.
For niche use cases, yes I agree. Kali for ethical hacking and security testing, and running a Cacti server for network monitoring are the two things I have experience in. Plus thousands and thousands of other things, but for every day use I just can't see it. The owner of the GMRS repeater that I pay to access is changing the Tx DPL tones tomorrow, while Chirp is available on Linux, the software to program my MXT500 is not.To each there own but I've found that Windows can't do much more than Linux can. Can't have everything.
I run Fedora and Ubuntu in VMWare, honestly I don't care much for the UI of either of them and I don't feel like spending days/weeks to customize the UI to make it look Windows-like when I could just use Windows. The cartoonish dock at the bottom of the screen reminds me of Apple products.
For some reason, the satelliteguys.us site is loading a lot slower than usual on both Chrome on my Asus laptop and Safari on my iPhone.
I'm also seeing longer appearances of the blue bar at the top and the "3 blue bars" loading symbol.
Is anyone else also having the same problem? Thanks in advance.
I'm also seeing longer appearances of the blue bar at the top and the "3 blue bars" loading symbol.
Is anyone else also having the same problem? Thanks in advance.
528 Replies
·
17953 views
Remember folks... just like DNS... its always Foxbat. 
WTF… …What the Foxbat!Remember folks... just like DNS... its always Foxbat.
S
wow what a kick in the balls!!! the wife blames you when things don't work now scott's blaming youWTF… …What the Foxbat!
I know. Here's what Scott has in store for me if I get out of line:wow what a kick in the balls!!! the wife blames you when things don't work now scott's blaming you
S
OMG to freaking funny
Supporting Founder
Several Dish offers showed up today in my account. Once you choose one the rest are removed. Offers were Showtime, Starz, AMC and others.
33 Replies
·
1590 views
Not for me, mines has no mention of how long aka the offer period and the Terms and conditions the $0.00 is good for. All I see is one can lose $5.00 if you decide to remove it before day 31 after you add it to the account.
Staff member
HERE TO HELP YOU!
Cutting Edge
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....
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....
68496 Replies
·
2670684 views
TWiT Tech Podcast Network
Time for another AWESOME video from the TWIT Network!
View: https://www.youtube.com/shorts/z72cjoZP83E
Direct YouTube Link - AI Can Self-Replicate: Unplugging the Threat! #shorts
TWIT's Website
TWIT Live Feed
View: https://www.youtube.com/shorts/z72cjoZP83E
Direct YouTube Link - AI Can Self-Replicate: Unplugging the Threat! #shorts
TWIT's Website
TWIT Live Feed
0 Replies
·
17 views
TWiT Tech Podcast Network
Time for another AWESOME video from the TWIT Network!
View: https://www.youtube.com/shorts/w5TOILSc_U8
Direct YouTube Link - AI Model Poisoning: The Hidden Threat on Hugging Face #shorts
TWIT's Website
TWIT Live Feed
View: https://www.youtube.com/shorts/w5TOILSc_U8
Direct YouTube Link - AI Model Poisoning: The Hidden Threat on Hugging Face #shorts
TWIT's Website
TWIT Live Feed
0 Replies
·
14 views
Help, I'm a little confjused on the activation process.
I purchased the Joey 4 from Solid Signal and shipping box has Call 866 726-4282 to Avtivate new Receiver. That number is Solid Signals number.
I googled and that search said call Dish to activate. I assume that is correct unless this requires a 2 step process.
Please let me know.
Thanks
I purchased the Joey 4 from Solid Signal and shipping box has Call 866 726-4282 to Avtivate new Receiver. That number is Solid Signals number.
I googled and that search said call Dish to activate. I assume that is correct unless this requires a 2 step process.
Please let me know.
Thanks
6 Replies
·
212 views
All good called Dish and new Joey 4 is activated and working.
Old Joey 2 deactivated and no need to return.
Old Joey 2 deactivated and no need to return.
S
i bought mine straight from dish as it was only $ 100.00 bucks!!! had the protection plan they came out removed and deactivated the 4k joey and activated and installed the joey 4.All good called Dish and new Joey 4 is activated and working.
Old Joey 2 deactivated and no need to return.
Supporting Founder
Pub Member / Supporter
Lifetime Supporter
Apple has finally released their Apple TV 4K with built-in Siri and a microphone so it can respond to your queries even if you don't have the remote. It also increases in price, to $299. I had been planning on updating my current Apple TV 4K streamers, but that's $600 for the two of them, and that's a pass at this point.
At $299, it had better come with 256 GB of Storage, Gigabit (or better) Ethernet, the latest HDMI tech and standards, and one year of free Apple One. But it probably won't…
At $299, it had better come with 256 GB of Storage, Gigabit (or better) Ethernet, the latest HDMI tech and standards, and one year of free Apple One. But it probably won't…
Apple TV 4K
Apple TV 4K. New Siri AI and hands-free control. Stunning picture and immersive HomePod surround sound. Works with your Apple and smart home devices.
www.apple.com
14 Replies
·
196 views
S
. apple's been making money off of software and not hardware for a while
they all do that anyways.. ever notice your cell phone slows down when you come up for an upgrade..
. apple's been making money off of software and not hardware for a while
Supporting Founder
Really excited for this season with Kentucky having a new coach and some really exciting recruits. Probably won't last long, but here's hoping this season is great.
141 Replies
·
1369 views
