I have ac***ulated a few boxes capable of what you are looking for, 12v, small & low consumption with remote ir sensor etc. Edision Prgressiv Nano (with or without wifi), Edision Picollini LED 3in1 with software readily available. I also have a Technomate 5402 M2 ( can record 3 progs and watch a 4th on Intelsat 907) still going strong but would require an inverter to power up and uses more of your precious battery power. I usually use the Nano as you can record 2 channels and watch a 3rd, with the right software version, on Intelsat 907. I also have a Linux box, but they are more tedious to set up as (manic01 may remember on another forum). The Edision range have a few more models which will do the job but you won't go far wrong with a EDISION Progressiv NANO and is within your (Icecrypt) price range. Hope this helps.