Steve,
I thought that's what it was. Oh, sure, I say that now, after you told me
what it was, haw. Anyhow, I'm pretty sure I read about that in the manual
when I got the R75 receiver but I don't see it mentioned, so far, in the
7000 itself.
Phil.
----- Original Message -----
From: "Steve Dresser" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, November 17, 2008 7:58 AM
Subject: Synchronous detection (was Re: Filtering report of the IC7000)
> Phil,
>
> Synchronous detection is the receiver's ability to lock on to a carrier
and
> supply that carrier's frequency to the detector during selective fading.
> When it works properly, as it does in the 2010, the result is to minimize
> the distortion on an AM signal that occurs when the carrier drops out
> leaving only the sidebands. As I said, it's one of the 2010's best
> features.
>
> Steve
>
> ----- Original Message -----
> From: "Phil Scovell" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Sunday, November 16, 2008 23:10
> Subject: Re: Filtering report of the IC7000
>
>
> > Steve,
> >
> > I'm not even certain what synchronous detection is so explain. There is
a
> > lot of synchronous topics in the manual and if synchronous detection is
> > what
> > I think it is, I haven't discovered that to be in the 7000 radio.
> >
> > Phil.
> > K0NX
> >
> >
> >
> >
> > ----- Original Message -----
> > From: "Steve Dresser" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Sunday, November 16, 2008 8:09 PM
> > Subject: Re: Filtering report of the IC7000
> >
> >
> >> Phil,
> >>
> >> Does the 7000 have synchronous detection? That may not be high on your
> > list
> >> of must-have features, but it's one of the best features of the 2010,
and
> >> almost impossible to find elsewhere.
> >>
> >> Steve
> >>
> >> ----- Original Message -----
> >> From: "Phil Scovell" <[log in to unmask]>
> >> To: <[log in to unmask]>
> >> Sent: Sunday, November 16, 2008 14:16
> >> Subject: Filtering report of the IC7000
> >>
> >>
> >> >I have tuned in some strong CW signals compared to the weaker ones I
> >> > reported on the other day. The S9 signals tune down to about 80 Hz
> >> > compared
> >> > to the narrow 12 to 14 Hz of the weaker signals. I am saying that
> >> > anything
> >> > outside these thresholds, top and bottom, means the signals simply
> >> > isn't
> >> > there; they are gone, that is, cut off. Pretty narrow tuning. I am
> > also
> >> > copying weaker signals, that when tuning passed them with wider
> > filtering,
> >> > such as in the sideband mode and are hardly copyable, once the CW
> > filters
> >> > mode is buttoned on, the signals come up to a Q5 copy level and then
> >> > can
> >> > be
> >> > made even stronger by fiddling with the tuneable filtering. I've
also
> >> > tested the notch filter used for zeroing out a carrier that comes on.
> > It
> >> > vanishes when you hit the right frequency but very little change is
> >> > noticed
> >> > in the background noise characteristics of the receiver. I also got
a
> > lot
> >> > of time during Sweep Stakes to play around with the sideband
filtering
> > and
> >> > witnessed first hand how narrow you can tighten down on a sideband
> > signal
> >> > and still copy him just fine.
> >> >
> >> > I still haven't learned how to set memories or scan, you get mighty
> > tired
> >> > at
> >> > spinning the dial at 1 or 10 Hz, so I plugged in the desk microphone
I
> >> > purchased because I knew it would have up and down scanning buttons,
> > which
> >> > it does. Those work fine other than the fact you have to hold them
> >> > down
> >> > during the scan and it would appear, from my frequency readings, that
> > you
> >> > are jumping 5 Hz in the sideband mode on the default setting so it
> >> > works
> >> > pretty well. It is pretty quick but not too fast that you just whiz
> >> > passed
> >> > the signal before you know it.
> >> >
> >> > Dumb me. I discovered this week, too, just playing around, it covers
> > the
> >> > FM
> >> > broadcast band but for good fidelity, I'm going to find me a bigger,
> >> > basier,
> >> > speaker because those in the radio are pretty tinny sounding. In
> >> > short,
> >> > it
> >> > would appear the 7000 will replace all my radios by a wide margine
and
> >> > this
> >> > includes my beloved Sony 2010 I have had for years. The 7000 is
about
> > the
> >> > size of a cigar box but you can pound nails with it due to its metal
> >> > construction.
> >> >
> >> > Phil.
> >> > K0NX
> >> >
> >>
> >>
> >> --
> >> No virus found in this incoming message.
> >> Checked by AVG.
> >> Version: 7.5.549 / Virus Database: 270.9.4/1792 - Release Date:
11/16/08
> > 10:04 AM
> >>
> >>
> >
>
>
> --
> No virus found in this incoming message.
> Checked by AVG.
> Version: 7.5.549 / Virus Database: 270.9.4/1792 - Release Date: 11/16/08
10:04 AM
>
>
|
