Any way to still use the SD legacy receiver or if not, then any way to use the old antenna with a supported receiver?

the 18" Dish mount pole --is NOT a swap out different size 

They swapped mine using the same mount 

Hello everyone--and thanks for keeping up with this thread!  I am getting some useful information.

I really would like to stick with Directv, and I want to do this antenna/dish changeout myself.

So can we please come to a better understanding of whether I will need to change the mount or not?

I have the 18" round dish mounted to the side of a chimney.

I just don't see why the Slimline dish would require any different mount, as long as it accommodates adjustments in azimuth and altitude.

Thank you for further thoughts.

OH --I understand Now --D*TV will Never Install a DISH attached to a chimney --When you had yours done 20 years ago --they did and NO longer DO .

So you will have to DIY --Good LUCK or have the dish relocated when D*TV does the install --The 18" Dish is much smaller than the Slimline The reason --It Needs to receive Signals from the 101-99-103 --your current dish only sees the 101  

DirecTV is shutting down MPEG-2/SD-only service. The SD channels will still be broadcast on the MPEG-4 feed for now, but unknown for how long. Bear in mind that non-HD TVs haven't been made in over a decade, DirecTV grandfathered SD-only service in late 2015, and they started their MEPG-2 shutdown in April 2019 (delays in completing but they have been moving forward with it).

Anything D12 or R16 and older, including any ever older boxes (i.e. RCA), must be replaced as well as the dish. DirecTV has a complimentary MPEG swap program for affected customers.

A key issue is your dish placement. DirecTV can no longer install on a chimney. In fact they cannot leave the ladder and go onto the roof. This is because OSHA regulations updated. DirecTV stays in compliance by not letting techs leave the ladder. So the new dish would need to go onto the building within ladder access or perhaps a pole mount or similar. For the existing location, it would be completely on you and your own cost to try and make it work.

The SWM slimline dish is bigger and heavier then the round dish IIRC the pole on the round dish is 17/8" OD the slimline is 2" OD not sure if it will fit in the mounting plate of the round dish.  The slimline dish will not fit on the round dish pole.

Thank you very much to the last 3 posts.

Those clarified a lot of detail and so at least I now know what I'm dealing with.

It was mentioned that my current 18" round dish "only sees the 101 satellite" and needs to see the "101-99-103".  So if the 101 Sat is not going to be transmitting, then isn't there a dish that is just as small and light as my 18" round that will see the 99 and/or the 103?  Couldn't I just swap out the LNB to a SWM? (and point it towards the other satellites)  Has anyone tried this?

I'm sure my post gives me away as a satellite newbie.

No.  To properly focus multiple satellites you need something other than a round dish.  Picture the thing pointing up into the sky.  99 and 103 are 4 degrees apart in a circle with a radius of 22,500 mi.  From your view point (azimuth) they're even further apart.  The circular dish can't sit in one place and aim the different angles properly.

Once again: They are Removing the SD Channels from the 101 and replacing them with HD Channels --SO you still need the 101 -& add the 99 & 103 

You can use your current until it goes DARK at some point in the future --however you will lose Channels along the way --that NO Access card will ever be able to regain.

So let me ask this:

What if I were to install the SWM in the 18" round dish and point it towards the satellite that gives me the channels I want to view (CNN and MSNBC mainly)  Would that work?  (is the satellite known for those channels?)

I'm sure you're thinking "just put a new dish up already", but a new dish is going to be a dealbreaker so I'm hoping to work with what I've got.

A SWM LNB --Will NOT Fit a 18" arm --that you have --It's a New dish in a New location or Nothing at some point 

You just don’t wanna give up that 18 inch dish do you? You have been told no less than 2 pages worth of responses you can’t keep and use the old dish. Bottom line it becomes a great birdbath when they shut down the sd feed 

The 18" round dish is incapable of receiving the transmissions that you need. The SWN LNB needs a dish built for SWM, which yours is not as it was not built to go onto the old style dish.

So you you need a new dish, in addition to boxes, going forward. DirecTV would have to install in a different location as a chimney install is no longer done per current regulations.

If you are absolutely set against a new dish, be it DirecTV sending a tech for new location or you doing yourself for the chimney location, then you will need to prepare for no longer having satellite TV. Sorry this is not the answer you want. Unfortunately your setup is so legacy that it is not as simple an MPEG swap (or upgrade) as you want and instead requires more updates done.

OK.  I'm getting the impression that I need to get the new dish.

Is the mounting arm the same length as the old dish?  Is anyone aware of one longer that would support the dish?

The reason I ask is again because of the chimney mount:  I will need a longer mounting arm to give the dish clearance from the side of the chimney.  Are there extension tubes that could achieve this?

(see attached pic--and yes, I realize that the chimney shadows the dish but wanted it this way to give a clean look to the street out north)

Thanks again for giving me things to go on.