I was able to get DirecTV to give me a $200 credit for buying an HR24 through another channel (Amazon). (Long-time customer, never late with a payment, Sunday Ticket subscriber - took a long phone call and having to demand to talk to Retention, but I got them to pay the full cost of the HR24.) I have received my HR24 and I would like to hook it up in my LR *in addition to* the existing HR21, at least until I'm finished watching all the legacy recordings on the HR21. (I also have an HR10-250 in my BR, so I don't have a SWiM or DECA or MRV installation - I have whatever they hooked up about 2 1/2 years ago when they did my last install.) I already know I need a pair of B Band Converters for the HR24 (since I don't have a SWiM installation) - called D* today and they're being shipped (for free). My essential question: Can I simply use a coax splitter in the LR to split the two coaxes coming into the HR21 off to the two inputs to the HR24 (routing all outputs through B Band Converters to their respective box)? If so, do I split before or after the B Band Converters (I suspect before), and is there anything special about the coax splitter needed to do the job? If that won't work, I suppose I would have to run coax (or something else) all the way from the multiswitch up on the roof, right? If that's the case, I'm inclined not to hook them both up - just unhook from the HR21 and hook up to the HR24, and hook back up to the HR21 whenever I want to watch one of the "legacy" recordings. (There's not really that much, but I don't want to lose any of it until I've watched it.) I'm willing to listen to any other suggestions as well that would make sense. Thanks!