The Marantz RC-2000 Mark I & II have an add on device that allows it to send RF signals as well as IR. I have seen it, but have not used it, so I cannot answer any questions about it. I think it costs about $75 (plus the $200 street for the RC 2000). It is bulky. If you are interested, I have a RC-2000 Mark I for sale as soon as the Pronto/RC-5000 hits the streets :)