SWM WON'T work with Legacy receivers (RCA, HNS, Sony, D10, D11)
I know. I worked for DirecTV. The single wire multiswitch only works with D12 receivers and up.
To the OP: You need to have D10, D11 receivers (for non swim setup) or D12, H21-24 or HR 21-23 (for swm setup).
Working in customer service I occasionally got asked this question for people who are wanting service on a boat/rv. I would say the best bet for you would be looking at craigslist in your local area to find people selling standard receivers that they own...they shouldn't be expensive, and they would work for you, and best of all, you can deactivate them when they're not in use without having to send them back in (they'll ask for the cards, but I've never actually seen anyone get charged for not returning them).
ALWAYS ask the seller for the receiver id numbers (RID) and call DirecTV to verify that they are in fact owned. If they say they were leased, don't buy them, as they won't activate them for you.
Another option is to purchase the standard receivers as owned from DirecTV directly, but again, that's more expensive.
?Let me know if you have any other questions.