Japan Radio NRD-545 DSP
Snot
What do you think about it?
Great audio? Great performance?
Tell me about it as I'm considering one today.
Mark Veldhuis
"Snot" <sn...@nose.org> schreef in bericht
news:mJ506.2441$bj7....@paloalto-snr1.gtei.net...
Have a look at this page:
http://members.fortunecity.com/swradios/nrd545.html
--
Mark Veldhuis.
http://www.markveldhuis.com
Snot
Thanks! I've decided to stick with my AR5000+3 as its more sensitive
and has much better overall coverage without all the little pesky DSP
induced quirks and noises.
"Mark Veldhuis" <m...@privacy.net> wrote in message news:91qtdf$4r81i$1...@ID-17573.news.dfncis.de...
Robert Lonn
that you read about on that web site. The radio has many user defined
setups. A menu driven system. Once it is set up correctly your radio
works great. The DEFAULT setting of the radio is not correct and 4
settings related to DSP performance must be reset to give flawless DSP
performance. JRC has since updated its firmware so the default settings
are correct. many early 545 were given bad reviews and then sold by the
owners. Call it operator error. Today the AOR 7030 is still the best for
pure AM broadcast performance, but for that utility band, SSB, RTTY and
even on some very difficult AM stations the 545 is hard to beat. The
AR5000 is a fine unit and you can't go wrong with it. If I had the time
I would write an ACCURATE evaluation of the NRD-545 reflecting how well
it works when it is set up correctly.
al
>I have a NRD-545 (and AOR7030) and it does not have all the problems
>that you read about on that web site. The radio has many user defined
>setups.
>I would write an ACCURATE evaluation of the NRD-545 reflecting how well
>it works when it is set up correctly.
>
Well one thing's for sure,I hope you will find the time.I would think that
"operator error" is a very BIG reason for people selling their radios.These
days,with all the bells & whistles now being implemented,a person needs to
spend alot more time getting the radio's various options to work together.
At a time when manufacturer's need to include concise,accurate & easy to
read/understand manuals it seem's the opposite is happening.This leaves the
door wide open for various so called "experts" to come in with their views.
Sometimes these "experts" have valuable info.However their are many out
there,the AOR7030 being a prime example,with their own agendas.
Al
--
al dudley....wash dc , usa
535,r70,c3g,m1200,m7000
al at olg dot com
G8jnz
performance must be reset to give flawless DSP performance.
yours to.
To the original poster of this thread I would echo what Robert Lonn says. I
find the set very acceptable. If you want good audio quality take a feed out
of the Line Out socket and poke it into a hi-fi amplifier; the audio is then
vastly improved. I'm still in love with mine.
de Bob M.
Nobody You Know
>
>
>I have a NRD-545 (and AOR7030) and it does not have all the problems
>that you read about on that web site. The radio has many user defined
>setups. A menu driven system. Once it is set up correctly your radio
>works great. The DEFAULT setting of the radio is not correct and 4
>settings related to DSP performance must be reset to give flawless DSP
>performance. JRC has since updated its firmware so the default settings
>are correct. many early 545 were given bad reviews and then sold by the
>owners. Call it operator error. Today the AOR 7030 is still the best for
>pure AM broadcast performance, but for that utility band, SSB, RTTY and
>even on some very difficult AM stations the 545 is hard to beat. The
>AR5000 is a fine unit and you can't go wrong with it. If I had the time
>I would write an ACCURATE evaluation of the NRD-545 reflecting how well
>it works when it is set up correctly.
>
>
I agree! I love my 545, it is a fantastic radio.
I have owned many, many radios, so I know what I'm talking about.
That review was a bunch of crap.
---------------------------------------------------------------
"Political Correctness is nothing but tyranny with manners."
Bob Camp
I can directly compare an AR5000+3 to a JRC545 since I have one of
each:
Above 30 MHz the AR5000 obviously rules. The JRC with a converter
simply is no match for it.
Below 30 MHz - hmmmmm.....
The JRC has MUCH better control layout.
The JRC display is a lot easier to see.
Both radios have a menu system, I find I don't need to navigate the
JRC's to use the radio.
Audio from the AR5000 isn't to great. The bottom fire speaker could do
a better job. Audio from the JRC is no better from the built in
speaker. Audio from the AR5000 gets a little better with outboard
audio, the JRC gets a lot better.
The DSP noises on the JRC are exactly like the same sort of thing as
the digital noises you get on music CD's. If somebody points them out
to you they get noticed. If you have never been shown what they sound
like you'd probably miss them. With all the odd junk noise from
computers and whatever on the bands these days I don't notice them
much.
The JRC is much better at things like front end overload and filtering
than the AR5000. Radio Canada really smokes into CT at night and the
AOR will generate a number of "extra" Radio Canada's at various points
on the dial. The JRC isn't as good as a Racal 6790/GM or an RF-550
with a RF-551, but it beats the AR5000.
The AR5000 is MUCH smaller than the JRC. Takes up a lot less space on
the table. It also is a LOT smaller than some popular "portable"
radios.
The AR5000 has scanning features that the JRC simply does not have.
The AR5000 has a built in clock. None on the JRC.
The AR5000 has an external standard line. Hook it up to an atomic
standard and it doesn't drift. JRC has a crummy $100 TCXO option.
If you want to see a written review of the JRC that tells a completely
different story about the radio than the famous web site review dig up
the QST review of the radio from a couple of years ago. They loved the
radio. They compared it to some of the best gear out there and claimed
it came out "as good as or better".
If you own a AR5000 you already know it's a fine radio.
Simply put - for HF the JRC gets used and the AR5000 does not. For
VHF/UHF AR5000 all the way forget about anything else. I run them
(and all my receivers) through a mixing console into a good amp and a
good set of speakers. The sound "problems" from the DSP are very minor
compared to the lousy little speakers in all these radios.
Don't know if this helps or just confuses the issue ....
Bob
Bill Carney
> settings related to DSP performance must be reset to give flawless DSP
> performance. JRC has since updated its firmware so the default settings
> are correct. many early 545 were given bad reviews and then sold by the
What four settings are they, and what should they be set at? I'm going to
purcase one in the very near future and would like to know what the proper
settings should be.
Elvis
2. I'm happy with it.
3. Compared to what? Yes.
4. I'd purchase again.
"Snot" <sn...@nose.org> wrote in message
news:mJ506.2441$bj7....@paloalto-snr1.gtei.net...
Elvis
"G8jnz" <g8...@aol.com> wrote in message
news:20001221185339...@ng-fy1.aol.com...
Robert Lonn
deal but wanted to point that out. Also clock timers as well.
Robert Lonn
my manual and I will share this info as soon as I get the documentation
out.
Ross Archer
Can I please have your autograph (if you haven't already
left the building?)
ERGO Radio Software
545 has got to be the best SSB/CW/Data receiver I have every owned. But
performance on straight AM is poor. Most of the clicking artifacts appear
to relate to a "too fast" AGC characteristic (or poor algorithm for AGC in
DSP) on rapid flutter in received carrier. Using ECSS improves the
situation substantially, but Noise Reduction not available in ECSS.
Has JRC done a firmware upgrade to improve this situation? My SN is 05152,
and my (perhaps wrong) impression was that the firmware change was earlier
than that.
On a side-by-side comparison with AR7030 on an AM signal with any type of
flutter, AR7030 is an order of magnitude better listening quality than the
NRD in plain AM mode. Ditto R8B. Ditto 535. And, to be really blunt, on a
rapidly fading All India Radio or Kol Israel signal coming over the polar
path, my RX320 is better than the 545 in plain AM mode. Fortunately, you
can switch to ECSS or SSB and improve things dramatically, but I sure witsh
JRC had a fix for this. Otherwise, it would be a near perfect receiver.
73 John VE6MBA
--
ERGO Radio Software
http://swldx.com
Robert Lonn <rl...@home.com> wrote in message
news:3A41BBEA...@home.com...
Steve Walker [News]
> > news:mJ506.2441$bj7....@paloalto-snr1.gtei.net...
> > > Anyone have this receiver?
> > > What do you think about it?
> > > Great audio? Great performance?
> > > Tell me about it as I'm considering one today.
Hi Snot,
Its worth looking at http://members.fortunecity.com/swradios/ for a good
review of the 545.
I have one yes with a late S/N above 52000
It's dammed good not as good as the WJ on very weak signals but very easy
too use once you have had a day at the controls. For SSB and UTE's the BWC
is a must have and you will love it as for the rest I rarely use the NB or
the DSP NR so I cannot comment but 1000 mems for use is much better than
most offer but then PC control changes all that on most newer radios so in
built mems are not an issue.
The DSP noises are there but nothing to get in a huff about - You will learn
to ignore them after a while and on AM the AGC is "odd" but again turn it
off and do it manually with the RF gain and you get better performance so
they say.
Audio on AM is wooly but thats the way it is they say. It aint HIFI but then
what comm;s RX is ? The R75 they say has better BC audio but then it has AF
DSP so the best bits about DSP it cannot offer yet. And for UTE's DSP
filters offer no group delay? so they are better for that unlike normal
filters (all the freqs pass at the same rate unlike ana where you get a
delay at hf)
Performance wise very good but the radio needs a preamp on very narrow
bandwidths to make up for the lose of signal ;/ but thats about it.
If you get a good deal get one - You wont be sorry.
Steve
PS: Anyone want to swap the internal VHF/UHF board for the external speaker
email me - I have one I dont use at all having no real need to listen to the
137mhz pagers about 100mtrs away ;/
Piotr Balcerzak
and R8B and between NRD545 and AR7030+.
Built quality is the best. Ergonomics is the best.
Sound is clear and crisp so weak signal can be easy
pulled out of the mud. NRD545 has also tunble
preselector and VERY effective notch filter.
But IF filters are really poor. They have excellent shape
factor, but sideband attenuation really sucks. R8B and
AR7030+ have much better filters in this respect.
I wish NRD545 IF filters had shape better than 1:1.3
and sideband attenuation better than 80 dB.
Second thing I don't like is fixed AGC for AM/Sync AM.
In my opinion it is really bad idea (shame on you JRC...).
Last thing that asks for improvement is AF tone control
- it works really weird.
There also quite funny (for me) things like: AM stereo
(in communication receiver - a joke or what :-))), over
900 bandwidths for IF filters (in 80% cases 6/4/2.4 kHz
is enough - I think that "only" 50 or 60 different
bandwidths as on WJ is more than enough).
In my humble opinion NRD545 is a champion for HAM and utility
but it is not the best choice for broadcast monitoring (R8B
or 7030+ are much cheaper and much better for general SWL).
That's my 2 cents.
Piotr
In article <8HT06.244678$76.55...@news1.rdc1.ab.home.com>,
Sent via Deja.com
http://www.deja.com/
RN 822706
the wideband converter tunesup to2000mhz is agreat scanner---- receives stereo
bcastswith converter----
I'm 72 been ham 23years --have owned abt 40 rigs andrx's 545 best rx .I
have
ever owned decodes rtty ontopc screen with software Nrdwin----needs NULL cable
to do thiS ENJOY REGARDS RN82...@AOL.COM
Charles Bolland
the NRD545 in your commments?
chuck Bolland
chu...@us-it.net
Brian Denley
The R-75 is known for marginal AM audio.
--
Brian Denley
http://people.ne.mediaone.net/bdenley/index.html
"Steve Walker [News]" <ste...@bucks.net> wrote in message
news:t49sj7n...@corp.supernews.co.uk...
Samuel Genner
Charles Bolland wrote:
> What are the four settings that must be changed to optomize
> the NRD545 in your commments?
Was, ausser einem besseren Lautsprecher willst Du den ändern ?
Meiner Meinung nach ist der JRC NRD 545 DSP einer der Besten HF Empänger
welchen man
zur Zeit zu einem bezahlbaren Preis erhält.
73 Sam
Bob Camp
You're right!!
I'd never noticed it.
Bob
"Robert Lonn" <rl...@home.com> wrote in message
news:3A439283...@home.com...
Bob Camp
Guess I'll jump in on this one - user setups (JRC's term ...) worth
fiddling with on a 545:
Number 8 - pulses per dial revolution, depends on what you are used
to. Default is 1000 I find it more "normal" set to 500.
Number 10 - beep tone - turn the darn thing off. I don't like buttons
that go beep.
Number 14 - bfo - comes fixed at 800 Hz. Switch it to variable.
Number 27 - Filter hold of noise reduction. If you are bothered by DSP
noises turn this one off.
Number 29 - Filter effect. If turning off the filter in 27 makes it
sound better to you then take this entry to about 150 and try again.
Number 30 - Beat Canceller. Try it at about 50 or so. This also cuts
out some of the DSP noise stuff. Setting it to 255 turns off the beat
canceller.
Number 32 - Filter Shape. Set it to Loose unless you are in a very
crowded band.
One thing that was not quite right out of the box:
The default bandwidths on some of the modes are pretty darn narrow. I
don't even remember what the factory settings are any more. This was a
significant issue on AM as I recall.
Hope this helps ...
Bob
"Charles Bolland" <chu...@us-it.net> wrote in message
news:3A4B6201...@us-it.net...
