Receiver Dish Compatibility.....

That dish (although I don't find any specs on it) is not a HD dish.  If you want to receive HD programming on the HR24 you need a Slimline dish.  They come in two flavors.  Press and hold the info button then select more system info.  Scroll down to dish type and it will be either SL3 or SL5.  If it were me, I'd match that on the garage.

I think that's a Dish Network dish.  It won't work with your DirecTV Receiver. 

Thanks for the complete model number. It should work fine.  You'll need to change the satellite setup when you connect the H24 to that dish ....

Dish Type Setup Steps:

From the Menu 

• Using the Arrow buttons navigate to - select Parental, Favorites, Setup - press Select button
• Using the Arrow buttons navigate to highlight - select System Set Up - press Select button
• Using the Arrow buttons navigate to highlight - select Satellite - press Select button
• Using the Arrow buttons navigate to highlight - select Repeat Satellite Setup - press Select button
• Follow the on screen instructions and press the - Dash button
• A new screen will be shown
• Use the Arrow buttons navigate to Switch - then press the Select button
• In the drop-down box use the Arrow buttons to highlight  "02 Multiswitch" then press Select button
• Use the Arrow buttons and highlight Dish Type - press the Select button
• In the drop-down box use the Arrow buttons to highlight "02: 3-LNB (18"x20")" then press the Select button
• Use the Arrow buttons to navigate to Continue until you can highlight
• Watch DirectTV

The BBC module is not required for non HD signals, only HD.  If you were using a non SWM Slimline HD dish then yes, you'd need a BBC module connected to the sat input on the receiver and yes they are free from Directv.  And no, they are not required on SWM Slimline dishes.  They are also not ever required on 23 model DVR's and receivers, whether SWM or not.

the AU9-SL3 is an slimline dish with a conventional 3LNB.  if you want a SWM version of the same dish you need the AU9-SL3S.  click on the link below

http://www.solidsignal.com/pview.asp?mc=02&p=AU9-SL5-SWM&d=DIRECTV-AU9SSWM-Five-LNB-KaKu-Slim-Line-Dish-Antenna-SL5-LNB-Combo-(AU9SSWM)&c=DIRECTV%20Dishes&sku=

No.  peds48 just posted the wrong link.  You'll be fine with the 3-LNB SWM dish.  

ooops, yes in deed, I posted the wrong link.  but my point was to make sure that you are getting a SWM LNB instead of a regular LNB. SWM LNB's have an "s" at the end of the model number.  so a regular LNB would be SL3 and a SWM would be SL3S