Re: [IRCA] digital recorder

[Tim Hall <timhall1@xxxxxxxxx>]

Aha.... That was SP mode!  HQ mode is fine.  You only get about 2 1/2
hours in that mode, but that's enough to store my UNIDs for a 2-week
trip.  Thanks for the tip, this will come in handy on the trip!

73, Tim

On 5/14/05, Tim Hall <timhall1@xxxxxxxxx> wrote:
> I picked one up tonight in hopes of using it on my upcoming trip.
> It's nice and compact, but so far every recording I've made has either
> been too weak to hear or (if I turn the volume/gain up) obliterated by
> loud squeals and scratches.  I'll keep working on it, and see if I can
> get some good audio on it...   73, Tim
> 
> On 5/14/05, Robert Foxworth <rfoxwor1@xxxxxxxxxxxxxxx> wrote:
> >
> > ----- Original Message -----
> > From: "Nick Hall-Patch" <nhp@xxxxxxxx>
> > To: "Mailing list for the International Radio Club of America"
> > <irca@xxxxxxxxxxxxxxxx>
> > Sent: Saturday, May 14, 2005 01:23
> > Subject: Re: [IRCA] digital recorder
> >
> > > I wonder if I could use your report on this recorder in the IRCA
> > Technical
> > > Column, Bob?
> >
> > Of course you may. I might have some material to add to it by then, as
> > well.
> >
> >
> > > I have a backlog at the moment for the column, but would likely submit
> > this
> > > in late June.  I would send you a copy of what I would submit for your
> > > final approval and further comments.
> > >
> > > For now...
> > >
> > > >the audio shows a slight
> > > >"flanging" effect in some cases.
> > >
> > > I don't recognize the term "flanging"...please enlighten!
> >
> > A phase cancellation effect, similar to multipath/selective
> > fading where there are two signals partially out of phase,
> > and the frequency response is altered. If you can find a
> > copy of The Big Hurt by Toni Fischer, you'll hear it.
> >
> > I could recreate it in a studio by recording the same
> > audio on two Ampex 350's, mixing the outputs
> > together, and then hand-dragging the feed reel on one
> > of the machines while listening to the mixed output.
> >
> > This is a similar sounding effect, though the cause is
> > _not_  the same, and it is much more subtle. Mainly
> > it makes steady background noise sound sort of
> > tinny, and voices may sound slightly "metallic"
> >
> > Don'cha love those high tech words?.
> >
> > The consensus is that the LF response is poor on these devices,
> > as a class, and that is probably true here also.
> >
> >
> > > >  However I
> > > >can get clean recordings from the receiver
> > > >headphone line jack as a level giving good
> > > >headphone volume.
> > >
> > > is "as a level" above supposed to be "at a level"?  I presume with the
> > > Y-cable from the receiver, you set the headphone volume to be
> > comfortable,
> > > and that gives you an input that doesn't overload the recorder?
> >
> > Looks like a typo I made. I didn't catch that one. I believe
> > I meant to say "at"
> >
> >
> > > >There is no recording level indication, so
> > > >recording from a receiver line jack has to be
> > > >set by trial-and-error. Volume up and down
> > > >is set in small steps by button, there are no
> > > >rotary controls.
> > >
> > > Presumably, these volume up and down controls have an effect only on
> > > playback?   Recording level is set by controlling the level of the
> > incoming
> > > signal?  I have downloaded the user's manual and specifications, but
> > > they're not 100% clear on this to me.
> >
> > As far as I have been able to tell, this is correct.
> > Typical "user level" doc's. Fortunately the volume steps
> > are pretty granular.
> >
> >
> > > Thanks for your help.
> > >
> > >
> > > best wishes,
> > >
> > > Nick
> >
> > 73. Bob
> >
> >
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> >
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> >
> >
>

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