It has always been my understanding that dual conversion adds both to
selectivity and image rejection. From what I have learned, allbeit
informally is that sensitivity is a front end and first mixer
function. But I'm still not too old to learn.
Thanks.
Pat, K9JAUAt 10:52 AM 1/17/2011, you wrote:
>Then why is it, when you compare a single conversion receiver to a double
>conversion receiver, the double conversion receiver always has better
>selectivity? this seems to be the case when I compared my dx-398 double
>conversion receiver next to the superradio 3 I had.
>
>----- Original Message -----
>From: "Steve Dresser" <[log in to unmask]>
>To: <[log in to unmask]>
>Sent: Monday, January 17, 2011 8:02 AM
>Subject: Re: bitter disappointment!
>
>
> > My understanding is that single/double conversion has more to do with
> > sensitivity on higher frequencies than with selectivity.
> >
> > Steve
> >
> > ----- Original Message -----
> > From: "Russ Kiehne" <[log in to unmask]>
> > To: <[log in to unmask]>
> > Sent: Monday, January 17, 2011 10:10
> > Subject: Re: bitter disappointment!
> >
> >
> >> From what I read, both the Superradio 3 and CCradio are single
> >> conversion.
> >> And you won't get much selectivity. My Radio Shack dx-398 is double
> >> conversion and I get better selectivity.
> >> ----- Original Message -----
> >> From: "Pat Byrne" <[log in to unmask]>
> >> To: <[log in to unmask]>
> >> Sent: Sunday, January 16, 2011 6:34 PM
> >> Subject: Re: bitter disappointment!
> >>
> >>
> >>> Kris and Tom,
> >>> I heard about the Super radios too late to get anything but the
> >>> three. And I like it a lot.
> >>> We also have the seven or eight year old C. Crane radio here and the
> >>> G E outperforms it big time. The Crane has the NOAA frequencies and
> >>> that is an advantage and it also had the old TV VHF channels which
> >>> was kinda nice for news and such but the G E has much better
> >>> sensititivy and selectivity on A M and the F M is probably equivalent.
> >>> The really sad part of this whole scenario is that night time A M is
> >>> nothing like it used to be. It's all call in radio which in my
> >>> opinion is a huge waste of bandwidth and the same ten shows are
> >>> repeated nationally so all you hear is duplicates of the same
> >>> crap. And near Chicago and I suspect all major radio markets, HD
> >>> makes adjacent channel listening about impossible. Won't even go in
> >>> to the "when I was young" rant cuz. then everyone will know how old I
> >>> am.
> >>> Thanks.
> >>> Pat, K9JAUAt 10:54 AM 1/17/2011, you wrote:
> >>>>I agree, Tom. I have both the two and the three, also. I like them
> >>>>both,but the two is far superior to the three in my opinion.
> >>>>
> >>>>
> >>>>I have seen a couple of the C Crane radios and I'm not that impressed.
> >>>>I'll
> >>>>take the super radios over them any day. I think the C Crane are way
> >>>>over
> >>>>priced. When you see what GE was able to do with the two and three for
> >>>>a
> >>>>really reasonable price and, you compare them to the C Crane radios at
> >>>>much
> >>>>higher prices, for me it is not worth it.
> >>>>
> >>>>Kris
> >>>>----- Original Message -----
> >>>>From: "tom behler" <[log in to unmask]>
> >>>>To: <[log in to unmask]>
> >>>>Sent: Sunday, January 16, 2011 7:23 PM
> >>>>Subject: Re: bitter disappointment!
> >>>>
> >>>>
> >>>> > Well, I have a 3 and a 2 here, and will use that 2 until it doesn't
> >>>> > play
> >>>> > any more! (grin)
> >>>> >
> >>>> > And, I do think the sound of the 2 is far better than the 3.
> >>>> >
> >>>> > The base and trebble controls really make a difference on the 2,
> >>>> > while
> >>>> > on
> >>>> > the 3, they are marginal.
> >>>> >
> >>>> > 73 from Tom Behler: KB8TYJ
> >>>> >
> >>>> >
> >>>> > ----- Original Message -----
> >>>> > From: "Lou Kolb" <[log in to unmask]>
> >>>> > To: <[log in to unmask]>
> >>>> > Sent: Sunday, January 16, 2011 2:11 PM
> >>>> > Subject: Re: bitter disappointment!
> >>>> >
> >>>> >
> >>>> > I have a 3 here. It's ok but from what I understand, the 2 was the
> >>>> > one
> >>>> > to
> >>>> > have. The Secrane radios seem to perform well but I doubt they
> >>>> > sound
> >>>> > as
> >>>> > good as the super radios since they don't have that big case and
> >>>> > speaker.
> >>>> > Lou
> >>>> > ----- Original Message -----
> >>>> > From: "tom behler" <[log in to unmask]>
> >>>> > To: <[log in to unmask]>
> >>>> > Sent: Sunday, January 16, 2011 9:57 AM
> >>>> > Subject: Re: bitter disappointment!
> >>>> >
> >>>> >
> >>>> >> Wow, that is really troubling!
> >>>> >>
> >>>> >> Tom Behler: KB8TYJ
> >>>> >>
> >>>> >> ----- Original Message -----
> >>>> >> From: "Howard Kaufman" <[log in to unmask]>
> >>>> >> To: <[log in to unmask]>
> >>>> >> Sent: Saturday, January 15, 2011 8:29 PM
> >>>> >> Subject: Re: bitter disappointment!
> >>>> >>
> >>>> >>
> >>>> >> It looks the same, but far worse than the GE 3.
> >>
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