Re: [IRCA] Sync Detection Question

["CHARLES HUTTON" <charlesh3@xxxxxxx>]

The 7030 will operate OK off of +12V, but the dynamicx range is lower by a 
handful of dB's. I believe somewhere on the AOR site there is a note 
dedicated to DC powering of the 7030 and it talks about this.

Wouldn't AOR USA be able to repair your radio?

In the meantime, you could use RxWings or my RxWings based 7030 control 
program to run the radio. There's even my usual method - the remote control.


Chuck




>From: "Neil Kazaross" <neilkaz@xxxxxxxxxxxxx>
>Reply-To: Neil Kazaross <neilkaz@xxxxxxxxxxxxx>,        Mailing list for 
>the International Radio Club of America<irca@xxxxxxxxxxxxxxxx>
>To: "Mailing list for the International Radio Club of 
>America"<irca@xxxxxxxxxxxxxxxx>
>Subject: Re: [IRCA] Sync Detection Question
>Date: Mon, 16 Jan 2006 16:16:14 -0600
>
>My AOR 7030+ is the best radio I have ever owned, period ! I use the R8A
>here since I DX from the car almost exclusively and the AOR is supposed to
>need more than 12 V. Also, my AOR is broken (need an encoder fixed..who can
>do that in USA ?) . My Drake R8A has a better noise blanker for my line
>noise, in general than the AOR also. But when the AOR worked, and I had
>almost no line noise, it was slightly preferable and did a better job next
>to very strong locals and the greater selection of filters was useful for
>TA's.
>
>73 KAZ
>----- Original Message -----
>From: "Steve Ratzlaff" <steveratz@xxxxxxxx>
>To: "Mailing list for the International Radio Club of America"
><irca@xxxxxxxxxxxxxxxx>
>Sent: Monday, January 16, 2006 4:00 PM
>Subject: Re: [IRCA] Sync Detection Question
>
>
> > Here are some of my comments, as an R8B owner.
> > During the good TA conditions of October, I wanted to find which of my
> > various radios might be better at initially detecting the faint AM
> > modulated
> > signals. I put my radios in a stack at my operating position and rigged 
>up
> > antenna and audio output
> > switching such that I could select any of the radios, using the same
> > antenna, and listen to the audio in the headphones. In my stack (still)
> > are
> > the AOR AR-7030, Drake R8B, Icom 746Pro, Icom R-75 (no AM mods).
> > I've found that the AR7030 hears a faint AM-modulated signal first, in 
>AM
> > or
> > SSB/ECSS mode;
> > followed immediately or perhaps at the same time, by the R75 in SSB/ECSS
> > mode. The signal needs to be stronger before the R8B and the 746P (both 
>in
> > either SSB/ECSS or AM mode) receive it. And with a little stronger 
>signal
> > the R8B can have the AM Sync Detector mode activated and it will
> > hold the signal quite well as long as the level stays up.
> > Thus, I do most of my listening for AM signals with the AR7030, for the
> > very
> > weak TAs we've all been trying for; but if the signal gets strong 
>enough,
> > then I find it's more pleasant listening on the R8B in AM Sync Det mode. 
>I
> > do
> > not particularly care for the sound of the 746P on AM signals, and 
>rarely
> > try it anymore, and it does not hear the weakest signals as well as the
> > AR7030 anyway, despite the stellar reviews some have given it for AM
> > signals--it has not proven to be my best AM-mode radio in my own
> > particular
> > tests.
> > For initially finding the signals, I use the R75 set to CW mode; with 
>its
> > 250Hz CW filters it will hear a faint TA het very well, even if a strong
> > station is on the frequency. I can gauge fairly well now what level het 
>is
> > needed before the AR7030 will get audio, then when that happens I switch
> > to
> > the AR7030 and try for the audio.
> > Obviously my setup is fairly unique to me, but in general I find that 
>with
> > the R8B I never try to hunt for a weak AM signal in AM Sync Detector 
>mode,
> > and that if you have another radio, you might want to try it--it may 
>hear
> > a
> > very weak AM signal initially better than the Drake.
> > Steve
> > NE Oregon
> > ----- Original Message -----
> > From: "Nick Hall-Patch" <nhp@xxxxxxxx>
> > To: "Mailing list for the International Radio Club of America"
> > <irca@xxxxxxxxxxxxxxxx>
> > Sent: Monday, January 16, 2006 12:37 PM
> > Subject: Re: [IRCA] Sync Detection Question
> >
> >
> >> Quoting "J.D. Stephens" <jdstephens_99@xxxxxxxxx>:
> >>
> >>> I have noticed during my recent chase for
> >>> Trans-Atlantic Mediumwave stations, that when I use
> >>> the Synchronous Detector on my Drake R-8, instead of
> >>> enhancing the intelligibility of the transmissions, it
> >>> has the opposite effect.
> >>>
> >>>
> >>
> >> I'm not sure that the R8's synchronous detector is of any use at all in
> >> DXing
> >> situations; does anybody have experience to the contrary?  And if R8A 
>and
> >> B
> >> owners could check in with their opinions, as I seem to recall that one
> >> of
> >> the
> >> versions upgraded the sync detector in some way?  (Can't get to my 
>notes
> >> as I'm
> >> on my lunch break at work)
> >>
> >> Certainly, not nearly as effective as the selectable sideband sync of 
>the
> >> ICF-2010.
> >>
> >> best wishes,
> >>
> >> Nick
> >>
> >>
>
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