First you must calculate the WAF for the satellite dish. There are several ways to determine the WAF, but the best way that many hobbyists have found to calculate this is as follows.
Plan on investing at least one evening and understand that once you commit to finding the WAF, you will not be able to quit midway through the process.
Book a reservation at you wife's favorite restaurant, have a bouquet of roses waiting at the table when you arrive. Order the finest wine, ask her about her day, offer to take her shopping at Macey's with an unlimited spending limit, hand her a certificate to a day spa for her and her best friend, etc......
Then tell her about your new hobby ......
Ah, yes ...... The WIFE APPROVAL FACTOR! LOL!