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Re: [IRCA] 1st NEW STN on 1400 Khz since 1982!!! WDNY Dansville, NEW YORK
Right on, Walt. The Perseus is not as sensitive as the AOR7030 as one can see at http://www.sherweng.com/table.html . While I've not found the difference to be important at Grayland or Newfoundland, I can imagine that a zero or very low noise situation like Masset would show a bit of difference.
And a note to Aaron Kreidel : dynamic range is not determined solely by the number of bits in the conversion to digital. When you throw away most of the samples to get from the sampling rate (lets say 80 or 122 MSPS to name two popular rates) to the bandwidth the user wants (2 MSPS for Perseus), you also throw out most of the noise. This is called processing gain, and to keep from boring everyone I'll say no more.
Chuck
> From: canswl@xxxxxxxxx
> Date: Fri, 27 Mar 2015 04:25:01 +0000
> To: irca@xxxxxxxxxxxxxxxx
> Subject: Re: [IRCA] 1st NEW STN on 1400 Khz since 1982!!! WDNY Dansville, NEW YORK
>
> Interesting thread. I have A/B compared the 7030+ and the Perseus SDR in
> an extremely low noise environment. I own 2 of each, and now also have the
> Elad. Ergonomics for the Perseus is exceptional and mature. My 1 hour so
> far with the Elad is a lot more like the SDR IQ which I also have. In any
> case, my point about signal retrieval: to be a contrarian: when the
> signal is way way down in the mud, just above the noise floor, the edge is
> still with the 7030+. I have had a number of examples of times when I
> could make out a signal on the AOR, but not on the Perseus using the same
> antenna. But, we are splitting hairs. 99% of the time, I'm using the
> SDR. 73,...Walt
>
> On Thu, Mar 26, 2015 at 8:21 PM, Chuck Hutton <charlesh3@xxxxxxx> wrote:
>
> > Les:
> > The Perseus also records the entire MW band, and more as it records a
> > maximum of 1.6 MHZ.
> > In my book, a different word than "outperforms" should be used when you
> > give Elad the cost advantage.
> > Can you be more specific when you say the Elad leaves the 7030 and R8B in
> > the dust with crowded bands and noise? Are you saying the Elad has a better
> > noise blanker? Are you saying the Elad has better strong signal handling?
> > Chuck
> >
> > > Date: Thu, 26 Mar 2015 14:10:52 -0500
> > > From: les@xxxxxxxxxxxxxxxx
> > > To: irca@xxxxxxxxxxxxxxxx
> > > Subject: Re: [IRCA] 1st NEW STN on 1400 Khz since 1982!!! WDNY
> > Dansville, NEW YORK
> > >
> > > Kaz,
> > >
> > > I've done some limited but literal A/B (antenna switch) comparisons
> > > between the two receivers and could find very little difference in their
> > > performance in terms of pulling out a single weak station from the
> > > noise. But when you consider that the Elad allows you to record
> > > literally the entire AM band in I/O format for later review, and that's
> > > it's performance range extends up to 160 MHz, and that it costs less
> > > than the Perseus, I'd say that all equates to "outperforms".
> > >
> > > I sold the Perseus recently, because it was sitting unused in the shack..
> > >
> > > In terms of the ability to hear weak and marginal signals under the
> > > crowded band conditions and noise on today's AM band, both receivers
> > > leave rigs like the Drake R8B and 7030 in the dust. I mostly DX domestic
> > > stations on the AM band, and FM stations---though I have managed to log
> > > about 17 countries from Central Alabama on AM--so a lot of what I'm
> > > looking for involves being able to remove splatter from nearby stations
> > > that are super-srong.
> > >
> > > Another situation that I encounter often is that I use a phaser to null
> > > a strong station on a given channel, and then need the receiver to still
> > > have the sensitivity to pull out the weaker station that is now audible
> > > underneath. The Elad really shines in that department.
> > >
> > > With decent speakers and/or headphones, it's also very pleasant to
> > > listen to for hours at a time.
> > >
> > > I admit that the learning curve can be a bit steep, and some of the
> > > software could be more user friendly...but overall, it's impossible for
> > > any box based receiver to come close to the performance of a good SDR
> > > overall.
> > >
> > > 73,
> > >
> > >
> > >
> > > Les Rayburn, N1LF
> > > Maylene, AL
> > > EM63
> > >
> > > Member NRC, IRCA, & Medium Wave DX Circle
> > > Former CPC Chairman for NRC/IRCA
> > >
> > > Elad SDR, SDR-IQ,Funcube Pro, Wellbrooke ALA-1530+ loop, LF Engineering
> > > Active Whips,
> > > Quantum Phaser, Kiwa Loop, Palstar MW Pre-Selector
> > >
> > >
> > >
> > >
> > >
> > >
> > > On 3/26/2015 1:49 PM, neilkaz wrote:
> > > > The filtering on high end SDR's like this enables one to MUCH better
> > DX adjacent to strong locals than with any non-SDR I've ever used.
> > > >
> > > > Les, I am curious about your comment about the ELAD outperforming even
> > the Perseus.
> > > >
> > > > Have you or anyone else here done a direct comparison between the ELAD
> > and the Perseus for Medium Wave AM BCB DX ONLY?
> > > >
> > > > 73 and thx .. KAZ
> > > >
> > > > -----Original Message-----
> > > >> From: Les Rayburn <les@xxxxxxxxxxxxxxxx>
> > > >> Sent: Mar 26, 2015 1:38 PM
> > > >> To: irca@xxxxxxxxxxxxxxxx
> > > >> Subject: Re: [IRCA] 1st NEW STN on 1400 Khz since 1982!!! WDNY
> > Dansville, NEW YORK
> > > >>
> > > >>
> > > >> Welcome to the world of SDR DXing, and congratulations on the new GY
> > > >> logging on 1400 KHz.
> > > >>
> > > >> The Elad SDR outperforms every receiver that I've ever owned including
> > > >> giants like the Drake R8B, AOR AR-7030+, Palstar R-30CC, etc. It's
> > even
> > > >> a better performer than the Perseus which I thought might be
> > impossible.
> > > >> You'll really enjoy it during an e-skip opening on FM, when you can
> > > >> record nearly 6 MHz of bandwidth for later review.
> > > >>
> > > >> I highly encourage you to download the latest Beta version of the
> > > >> software, which includes a much improved scheduled recording feature..
> > > >> It's pretty easy now to record the entire AM band and catch
> > > >> TOH ID's overnight. I'm sure you'll log a lot of new ones in the weeks
> > > >> to come.
> > > >>
> > > >>
> > > >>
> > > >> --
> > > >> 73,
> > > >>
> > > >>
> > > >> Les Rayburn, N1LF
> > > >> Maylene, AL
> > > >> EM63
> > > >>
> > > >> Member NRC, IRCA, & Medium Wave DX Circle
> > > >> Former CPC Chairman for NRC/IRCA
> > > >>
> > > >> Perseus SDR, SDR-IQ,Funcube Pro, Wellbrooke ALA-1530+ loop, LF
> > > >> Engineering Active Whips,
> > > >> Quantum Phaser, Kiwa Loop, Palstar MW Pre-Selector
> > > >>
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