IMHO, the only thing that is better than
what Don describes is
the R-4C as he describes BUT.......use a
Timewave 599ZX
with a pair of noise canceling earphones
(the Bose are expensive, but
quite comfortable).
The Timewave has a superior audio amp
and I set up the filter as a
bandpass with the low end at ~300 Hz and
the high end at 1,500 Hz.
This helps with the low end "rumble" and
the high end atmosphere noise
and makes the radio even more enjoyable.
I rarely use the other features
of the DSP filter, but on occasion, the
"Random" function does help. Only
on few occasions do I use the CW
function of the DSP. It does help also,
but for the most part, the R-4C audio
into the DSP filter is "clean". I have
recently aligned my R-4C and used the
headphone jack with out the
Timewave and again realized what a huge
difference it makes. The DSP filter is
not low cost, but I got it 10 years ago
and it is still a viable solution. I am
sure
that there are lower cost filters out
there, but can not attest to the audio
amps on
them. One of the cost drivers of the
599ZX is the ability to go to 5 kHz
as the upper cut off frequency. This
compares to others that have a cut off
at
3 kHz or so. For amateur radio, the 3
kHz is fine, but I also use the 599ZX
with
my Drake R-8B for BCBDX and Beacons.
Jim
WA9ZBV
Orange, CA
------------------------------
Message: 5
Date: Sat, 5 Feb 2011 08:51:43 -0800
From: "Don Jones" <k...@comcast.net>
To: <drakelist@zerobeat.net>
Subject: [Drakelist] My Drake/Sherwood
R-4C Rules my shack!
Message-ID:
<000c01cbc554$f890e040$e9b2a0c0$@net>
Content-Type: text/plain;
charset="us-ascii"
Like some of you here, I have been
working very hard to get into the log
of
the DX-pedition to the South Orkney
Islands. My favorite band/mode has
always been 40M CW. Last night I
finally got my contact with them.
Considering I am only running 600W to
a 20M double zepp from W. WA it has
been a bit of a chore.
My fully loaded "Sherwood R-4C smoked
my Ten Tec OMNI 6+ (which has a full
load to TT filters and the INRAD CW
roofing filter mod) last night. On the
Drake VP8ORK was only a 529 using GUF
600Hz roofing filter and the DRAKE OEM
250Hz cw filter with no ringing
filters or white noise. One the OMNI
VI+
VP8ORK was only 229 due to the
receiver white noise and the howling
DSP
noise. It is absolutely amazing to
hear the difference of the two
receivers.
I do prefer the digital control that
the "6" offers, but if you can't hear
'em you ain't going to work 'em. A
trip down to Fry's electronics for a
4PDT
12V relay, a 3 pos double pole rotary
wafer switch, a bud box and 6 RCA jack
and 3 1/8" headphone jacks is on the
agenda next so I have TR switching for
the R-4C, then it is good to go for
the TJ8 DX-pedition coming up next.
God I Love that Sherwood R-4C.
Don Jones KO7i
Arlington, WA
_______________________________________________
Drakelist mailing list
Drakelist@zerobeat.net
http://mailman.zerobeat.net/mailman/listinfo/drakelist
