I am an OBGYN working at mission hospital in rural Honduras. I know nothing about the inner workings of the fetal monitor, so please bear with me. We started the OB program 2 years ago and have one of the cheap all-in-one monitors that have a little 4 inch display. It is pretty hard to read and useless for subtile changes in heart rate. So, I am looking to see if I can find an older monitor that will give me video output to a video monitor. I am under the impression that the newer models have proprietary software that will enable output to a video monitor, but this would be cost prohibitive for my hospital. My question is there an older model that will give me the ability to hook up a simple flat screen monitor to have a visual of the fetal heart rate pattern without having to buy extra software? I have worked with Philips, Corometrics, GE, and HP in the past and they seem to be very good machines. I can get most anything on ebay, so if you have any information about a model that will work, please let me know.