Been lurking for about a month here, New to varmint hunting, after seeing so dang many yotes during turk and deer season , I decided it just might be the ticket to pass the mid-winter blues. I went out and got me a 22-250 and some hand calls, that way I wasn't in it to deep if it wasn't my thing, decided I would wait on a electronic caller, for a while anyway...then I came apon the thread about the home made e-caller, and figured there might just be something to it. I knew that I really didn't want to pack around alot of weight, so the RS caller sounded very appealing, so I set out and got the amp for about $12.00, a stereo 1/8 x 6' cable to go between the caller and the amp about $4.00 and a 1/8 x 12" cable to keep things close together for seting it up about $3.00, a two male plugs and two female plugs, to make an extension cord for the speaker about $5.00, 50 feet of speaker wire I had laying around, and an old external speaker I also had laying around, and a portable CD player I also had. I figured since I had saved a few bucks by not having to by a speaker and a player, I would look into making my caller digital..A trip to Wally World and I found a RCA digital voice recorder, model RP-5007 for around $60.00 . It is just the ticket!!!! With a 4 meg memory card it holds around an hour and a half of audio, which can be devided into up to ten folders with as many as 99 subfolders, I recorded my sounds into one minute loops, and with a simple press of a button I can replay the sound or change files or folders in a flash and can also pause quietly on and off with out any pop or crack noises, I put coyote sounds in one folder , rabbit in another, woodpeckers and other birds in another, other animals in another, and finally crows in another. It is very easy to switch back and forth quickly and with a cheat sheet I know right where every sound file is ...and the best part....THIS SUCKER WILL CRANK ...with crystal clear digital audio !!! Unlike an MP3 player, I can record any sounds from anything very easy , and drop sounds into any folder at anytime along the way , record any wave file on it quickly, even add real sounds from out in the field at the touch of a button. Im tellin you guys this thing IS the way to go, no doubt about it !!!! Right now I have roughly 45 different sounds on it at about 1 minute each, with the ability to repeat or change sounds quickly, and still have about 50 minutes of room left for expansion , and if that doesn't sell you it even has a self contained speaker so I can unplug it from the amp and speaker and use it stand alone to bring in the varmits a little closer. Sorry if I sound long winded on my first post here but every body I know that uses an electronic caller , just looks at my nifty itty bitty set up puzzled till I give them a quick run thru, then they are grinnin from ear to ear!!! Very light, very compact, very clear, and very LOUD. Now all I have to do is take it out for a field trial, Hopefully I will get the chance to get out this weekend and see if it works as good as it sounds. Now on to try to figure out the remote control end !!!