I had a 2001 as well!. That's what drove me to the 2010. I picked up the 2001 used at a hamfest. Coolest radio ever, at the time, but the ECL (Emitter Coupled Logic) that it used completely trashed the batteries after about 1.5 hours. It was terrible. I used to have to take 3 or 4 sets of D batteries with me for 1 day's worth of listening. I don't think there was any such thing as rechargeable D's at the time and if there were, they would have been NiCad since NiMH hadn't been invented yet. I sold the radio a couple of years later I think. That model receiver had a bad case of the "chuffs" IIRC.
That brings back memories. Now my ICOM R10 does the same thing in 1/5 the size, if it gets a decent antenna hooked up to it.