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I'm deep into building a custom offset antenna and am now exploring lnb modifications that may be incorporated into the design.
In looking at KU scalars, I can't find design data on the net (some pictures of larger KU scalars and nothing else)
I can see and understand the geometry that is capturing the antenna area and excluding the area outside of the antenna.
When I rip apart some standard KU lnb's, I think I am seeing that the scalar rings spacing is related to the wavelength. The tips of each ring appear to be in the plane of a cone extended from the initial cone and depth appears to have a comparable dimension.
If that is true, I ask myself why the designers did not just extend the cone sufficiently to match the "cloud" area one is trying to receive. Or, is it a mechanical design to provide sufficent attaching area for the protective cover?
In looking at KU scalars, I can't find design data on the net (some pictures of larger KU scalars and nothing else)
I can see and understand the geometry that is capturing the antenna area and excluding the area outside of the antenna.
When I rip apart some standard KU lnb's, I think I am seeing that the scalar rings spacing is related to the wavelength. The tips of each ring appear to be in the plane of a cone extended from the initial cone and depth appears to have a comparable dimension.
If that is true, I ask myself why the designers did not just extend the cone sufficiently to match the "cloud" area one is trying to receive. Or, is it a mechanical design to provide sufficent attaching area for the protective cover?
5 Replies
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2158 views
Regarding just this one point of your post . . .
I had been looking at the designs of an offset scalar for C-band, recently.
Yes, I believe the tips of the rings do form a cone which includes an angle just big enough to see the dish.
And, given a round set of scalar rings, the dish must appear round from the perspective of the LNB.
For typical offset dishes, that makes them a little taller than wide, and their aperture is the width, not height, of the dish.
So, if your dish is 30" wide and 36" tall, it's not really a 36" dish, it's a 30! -
This is not in keeping with the way imported dishes are measured, but if you compare their performance with commercial dishes, I think the answers will be clear.
Now, as to the scalar spacing...
The only document I could find, suggested scalar rings be spaced no less than 1/4 wavelength apart, and no more than 1/2 wavelength.
The same measurement applied to their height.
Measuring ring height in an offset scalar wasn't clearly documented.
Hope you can confirm the info on the scalars.
Working at Ku sizes will probably require considerable care and accuracy.
C-band on the other hand, is something I'd be a lot more comfortable dealing with.
Regarding just this one point of your post . . .
I had been looking at the designs of an offset scalar for C-band, recently.
Yes, I believe the tips of the rings do form a cone which includes an angle just big enough to see the dish.
And, given a round set of scalar rings, the dish must appear round from the perspective of the LNB.
For typical offset dishes, that makes them a little taller than wide, and their aperture is the width, not height, of the dish.
So, if your dish is 30" wide and 36" tall, it's not really a 36" dish, it's a 30! -
This is not in keeping with the way imported dishes are measured, but if you compare their performance with commercial dishes, I think the answers will be clear.
Now, as to the scalar spacing...
The only document I could find, suggested scalar rings be spaced no less than 1/4 wavelength apart, and no more than 1/2 wavelength.
The same measurement applied to their height.
Measuring ring height in an offset scalar wasn't clearly documented.
Hope you can confirm the info on the scalars.
Working at Ku sizes will probably require considerable care and accuracy.
C-band on the other hand, is something I'd be a lot more comfortable dealing with.
Thank you - I am moving in uncharted territory here and may just fabricate some and see what happens. Just puzzled and don't understand why they did not extend the solid cone.
And yes, when one goes thru the design process, one finds that even though a standard offset dish (designed for one focal point) does not have a 1/1 height/width ratio, the area seen by the lnb is "1/1 and round" and matches the diameter (width) when the dish is placed in it's "offset" position.
Supporting Founder
Since the Reds have there thread we should too!
Last watched Nine inch Nails
Next 3:10 to Yuma
Last watched Nine inch Nails
Next 3:10 to Yuma
5347 Replies
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509342 views
Hello everyone, new guy here. I'm trying to solve problem I'm having with Dish bonus view channels. When I'm watching the bonus view channels then I switch back to regular dish channels, after few minutes the screen flips to black and after 30 seconds flips back to regular channels and continues to flip back and forth until I turn off TV. After I wait 30 minutes and turn back on , I can use regular channels again. So, its after I switch from bonus view channels to regular dish channels the problem starts. Been trying to fix this for a month, but no luck
Here what I've done.
i contacted Dish support and they sent me a new Joey3, but no help. Switched to a different HDMI input on TV, no help. Used different HDMI cable , no help. Used different electrical wall plug, no help.
Finally got a Dish tech to check it. He ran all systems check and was OK. Finally he brought in a small TV and plugged in the HDMI out from the Joey to the small TV. He could not get the problem to occur on his small TV, so the new Joey was working OK. So, then the problem must be myTV. He made some phone calls and came back with the answer that there must be a problem with the analog to digital switch in my TV. Has anyone ever heard of a problem like this, or is it time to be looking for a new TV? My tv LG OLED65C8PUA. TV has been trouble free til now. Thanks
Here what I've done.
i contacted Dish support and they sent me a new Joey3, but no help. Switched to a different HDMI input on TV, no help. Used different HDMI cable , no help. Used different electrical wall plug, no help.
Finally got a Dish tech to check it. He ran all systems check and was OK. Finally he brought in a small TV and plugged in the HDMI out from the Joey to the small TV. He could not get the problem to occur on his small TV, so the new Joey was working OK. So, then the problem must be myTV. He made some phone calls and came back with the answer that there must be a problem with the analog to digital switch in my TV. Has anyone ever heard of a problem like this, or is it time to be looking for a new TV? My tv LG OLED65C8PUA. TV has been trouble free til now. Thanks
7 Replies
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111 views
Supporting Founder
Lifetime Supporter
Thanks to Fitch Ratings ( who gives the ratings on Credit and debt, as approved by the SEC, so they have accurate numbers) we have the totals.
DIRECTV's video subscriber base is the third-largest traditional multi-channel video programming distributor (MVPD) in the U.S. with about 8.2 million subscribers at the end of 1Q26.
The last time it was reported, it was 8.8M at the end of 2Q25, so only a 600,000 loss for 3 quarters, which is a major improvement, since for many years before that, it was losing 500,000 a quarter, 2 Million a year.
It is now losing less than Dish/Sling combined, I believe the Genre Packs are helping to retain and get subscribers.
DIRECTV's video subscriber base is the third-largest traditional multi-channel video programming distributor (MVPD) in the U.S. with about 8.2 million subscribers at the end of 1Q26.
The last time it was reported, it was 8.8M at the end of 2Q25, so only a 600,000 loss for 3 quarters, which is a major improvement, since for many years before that, it was losing 500,000 a quarter, 2 Million a year.
It is now losing less than Dish/Sling combined, I believe the Genre Packs are helping to retain and get subscribers.
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381 views
Recently came back to DirectTV Satellite service and have two boxes, Gemini and a main HR54.
DirecTV is charging me two "TV access fees" of $10 each, but can only watch TV on the one without the server. Is there anything I can do to fix this?
DirecTV is charging me two "TV access fees" of $10 each, but can only watch TV on the one without the server. Is there anything I can do to fix this?
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946 views
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....
67110 Replies
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2662397 views
Pub Member / Supporter
Lifetime Supporter
I feel like this was discussed in another thread, but I can't find it. I have T-Mobile and my last iPhone upgrade was in 2020. I want to get a new iPhone, but what is the best way to go about doing it? Should I order the iPhone from T-Mobile directly, or should I buy from the Apple Store? I feel like there are pros/cons to each option.
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40 views
I have a Hopper with Sling. (Don't know exact model.) A couple nights ago, I went into the DVR screen, and noted that it was recording three programs. Yet I was able to view live TV (that was not one of the channels being recorded.) Did something change? In the past, it would only let me watch one of the channels being recorded, or any recording in the DVR menu. Maybe it was streaming, although there was no indication of that?
Apologies if this has been covered; I searched and didn't find anything.
Thanks.
Apologies if this has been covered; I searched and didn't find anything.
Thanks.
9 Replies
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363 views
iJustine
Time for another AWESOME video from iJustine!
View: https://www.youtube.com/shorts/YJjxjYvmQ8s
Direct YouTube Link - Good Bye, Tim! Last WWDC
The official iJustine Website's Website
Buy her book!
View: https://www.youtube.com/shorts/YJjxjYvmQ8s
Direct YouTube Link - Good Bye, Tim! Last WWDC
The official iJustine Website's Website
Buy her book!
0 Replies
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11 views
Pub Member / Supporter
Cutting Edge
WANTED DirecTV LCC
Anyone have a DirecTV Local Channel Connector that you'd like to get rid of at a reasonable price? DirecTV is currently in a contract dispute with owner of my local ABC affiliate.
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313 views
I did that. The response was that the LCC is not available. Escalated the issue to a tech support person with the same results.
Could be out of them I guess ... I'd keep trying, every 3-4 days.I did that. The response was that the LCC is not available. Escalated the issue to a tech support person with the same results.
If they are not out of them as them WHY you can't get one, seeing Your in a Dispute. Thats what they are for.
I would make them give you a real answer, don't let them off the hook.
I had one, and it worked well, but I believe I gave it to another D* friend (also had a AM21), I know I gave them away ...
According to the tech support guy, they don't have any in stock. He said I should receive an email when and if they have them. I even told him I would accept a refurbished unit.
I'm not sure your going to find any Refurbished ones as D* doesn't ask for them back.According to the tech support guy, they don't have any in stock. He said I should receive an email when and if they have them. I even told him I would accept a refurbished unit.
Pub Member / Supporter
Lifetime Supporter
Did anyone have a price increase today on their equipment? I own my VIP211k's, and they have been $5.00. My bill that I received last week shows the "add-ons" as being $5.00. However, I just logged into my Dish account, and my "add-ons" are now $10.00. Did the additional receivers go up by $5.00 recently?
As I mentioned, my last bill shows $5.00 and under the notes, nothing is mentioned about a price increase.
As I mentioned, my last bill shows $5.00 and under the notes, nothing is mentioned about a price increase.
11 Replies
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211 views