Below is a message form another board that I think is benificial to post here. This is the electronic caller I am planning on putting together right after Christmas. This IS the ideal system as far as I can see. Remote control, unlimited amount of sounds (just buy the CD's), it's digital, etc. and it's inexpensive! Most bang for the buck!
Hopefully all the links work. Here is the message from Mike Harter as posted on another forum....
" Let's see if I can cobble something together for you here. I'm assuming you are willing to do some on-line shopping, and don't need a "one stop scenario". This has been covered in this forum on other threads, but I'll try to assemble it for you here.
I'm assuming your goal is a versatile, light weight e-caller for around $350.
The heart of the system is the Johnny Stewart Power Pro Convert-a-Caller, an amplifier/battery/speaker unit in a slick carrying case for around a $100. They are currently on sale at Natchez for $89.
JS Power Pro
You drive this unit with a tape Walkman, CD Player, or the real way to go - an MP3 player. I've set up several using the KB Gear JamP3 player, a modestly priced unit that is perfectly sized, takes internal memory cards, and is relatively inexpensive (around $30). This one is big enough to see in low light, has buttons you can use with gloves, and the memory cards allow you to group sounds if you like. With 16 megs of internal memory and a 32 meg flash card running resident, I carry 14 sounds in three minute loops at CD quality. A warning here. I've encountered several of these units with bad headphone jacks and had to have them repaired locally. I considered the cost worth it because I like the design. Smaller seems to be the fashion in MP3 players, and to me, bigger is a little better.
JAM MP3
For the remote, experience here has caused us to settle on the Azden WLX-PRO wireless microphone. Best price seems to be about $135 off the net.
Azden Remote
There are a few tricks with the Azden you can glean by reading through the threads on this subject. Briefly, you use minimum power off the MP3 so as not to "overdrive" the system. If you get some RF noise, there are ways to mitigate it with ferrite beads on your cables. We can help with that.
For cables, I use a coil cable like CB-120 at:
Coil Cables.
For ferrite beads to reduce RF interference, I've been using FB-46 at:
Ferrite Beads
You put these on in whatever configuration works best for you. Most have attached to the cable connecting the MP3 and the Azden Transmitter (at the MP3 end), although one of the more famous members of the Board got the best results by snapping it on the wire leading from the Azden Receiver to the Power Pro (with three wraps thru the bead). See, you can even create.
Basically, for about $350 ("all in" with shipping and sounds), you can have a very versatile e-caller using MP3 sounds which allows you to switch calls in mid-stand, stop and go, vary volume, and generally raise all Holy Hell with any predator in range. The MP3 sounds are loaded on your computer, and from there to your MP3 player in simple fashion. This is important! You control the quality and the length of the loop. I use 3 minute loops at CD quality. The FoxPro I'm told has a card with 10-30 second loops. Imagine, on a 30 minute stand, you're listening to the same 30 second loop 60 times. Talk about brain death. And to compound the felony, if you want new sounds, back to the factory you go with checkbook in hand (giving up the use of the caller in the interim, I would suspect).
FLASH: Sounds are not free. You can buy the tapes and convert to MP3 on your computer, or you can buy CDs from Johnny Stewart with the MP3 files included. Avoid the temptation to scam your sounds. It's a copyright infringement, and you're likely to diminish sound quality in the process.
Here's a source for CDs with the MP3 sounds:
Western Recreational Industries
Also resist the temptation to "do it on the cheap". Some here have tried to eliminate the Power Pro by using Radio Shack budget gear (speakers, amps, and the like). They'll work, but it's a lousy arrangement in my view. The JS is well made, the battery life is good, and the carrying case is very well thought out. Once it's set up, you grab it and go (albeit with a handful of batteries for the MP3 and Azden).
Just my opinion, but I've called over a Fox Pro and was not impressed. For that kind of dough, it should scratch your back instead of coming in a cheap, plastic flashlight case.
Good Luck
Mike Harter "