Telstar Electronics wrote:
Bryan wrote:
cmdr buzz corey wrote:
On Nov 14, 5:13 am, Telstar Electronics wrote:
The VoiceMax speech processor is not for everyone...
It's only for radio operators that want maximum range from their rig.

Along with maximum splatter.

In looking closely at his photos, it appears his circuit is based on the
Analog Devices SSM2166 (product data:http://tinyurl.com/6eadpn). The
specifications indicate it *can* be operated cleanly. Of course, to set
it
up requires at least an oscilloscope... which many hams don't own (or
know
how to use).

Based on the photos I've seen, I wouldn't buy one because of the poor
soldering:http://img105.imagevenue.com/img.php..._122_173lo.jpg.
I'll just continue to use my 2-tube (2x 3-500Z) speech
"processor":http://www.rigpix.com/linears/sb220.htm

Bryan WA7PRC

WA7PRC, you are absolutely correct that the design is based on the
Analog Devices SSM2166 chip. I'm curious about your soldering comment.
Why do you feel the soldering is poor? We have not had a single
failure due to poor soldering. We have approximately 400 units in the
field at this time. The field failure is around 0.2% during the one
year period that these units have been on the market.

According the photo (http://i17.ebayimg.com/06/i/000/cb/2d/2695_1.JPG) that
I found on a certain well-known auction site, all but a few solder joints
had what I call "reverse fillets". The solder connections should have a
concave shape but instead have a convex shape (too much solder). The few
that didn't appeared to be overheated, with a grainy appearance. I hate to
say so but, though you've had a low failure rate, they definitely wouldn't
pass scrutiny to meet Mil, CGMP, ISO, or IPC standards.

Bryan WA7PRC