I use the AmCom DSP "base" unit with my Omni VI/3, which also provides the
power for it. This little DSP unit does a fantastic job of reducing the
very annoying background hiss to practically zero. I have it driving either
an MFJ "Clear Speech" speaker or a Radio Shack "Minimus 0.5" speaker. BTW -
the Minimus 0.5 speaker beats the socks off of any other commercially made
speaker I have ever tried for communications work. The one that I have is
about 28 years old and unfortunately Radio Shack hasn't carried them for the
past couple of decades.
From: N4ZN - [mailto:email@example.com]
Sent: Wednesday, February 13, 2002 6:14 AM
Subject: Re: TenTec digest, Vol 1 #241 - 10 msgsRe: [TenTec] RX-340 and
I have been using the AmCom DSP speaker for quite some time now. I find it
easy "transparent" solution to all kinds of noise problems, quite similar to
the old "NR button" fix.
It's not specifically adjustable to any any particular type of noise, but
a fantastic "blanket effect" on all types noise. The bit rate is slow enough
where it doesn't have any adverse effects on a cw signal, but it blasts away
a "tuner upper" or a BC station in fine form. Random white noise, static,
birdies, hash... all gone. In fact, I've used it mobile, and been able to
stations thru a S-9 power line noise level... judging the desired signal to
an S-3,or so.
Best thing is, it costs about $150... as opposed to $400 with the ZX. Worse
thing is, you'll have to add your own power on/ power off switch. It has
a "function on/off", but the unit is allways drawing current regardless. The
radio shack large red pushbutton fit nicely under the Function on/off with
plenty of room insde the case for work. And I had to add a fuse. Seems funny
that these two items were left off the production run, but then again, so
the fan on a Ten*Tec.
This unit comes either in it's own speaker cabinet (with a pretty decent
sounding speaker), or as a "base" unit with out a speaker, but smaller. I
for the speaker, as I was planning on running it mobile, and needed a
anyway. Note, with the base unit you'll have to add a headphone jack in
addition to the main power switch and the fuse, as it only has one audio out
for running to a speaker. The mobile unit has a 1/8" out for headphones.
Just another option for your consideration... hope it served as useful info.
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