Come on Al, you may as well wish that Miss America will walk up to you, give
you a kiss and hand you the winning mega-bucks ticket! (hi)
Without using DSP, and maintaining the Corsair's current features, we must
have Xtal filters on two different IF frequencies. This means about 6
filters, just for CW and SSB.
If you want it to operate AM and FM, you need even more filters, driving the
cost even higher and almost doubling the footprint of the radio.
A part that is not a "Potential unobtainable part" - now days would be next
to impossible, other than a simple resistor.
I know, it was only a dream. Like most dreams, it just isn't going to
happen.
QRX, I think Miss America is at my front door . . .
73 - Rick, DJ0IP
(Nr. Frankfurt am Main)
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Al Gulseth
Sent: Friday, October 03, 2014 3:01 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Modern version of the Tec Tec Corsair - please Ten
Tec!
It's interesting that this discussion should come up when it did - a local
friend of mine who has owned several of the earlier Omni/Corsair series rigs
said almost the same thing as this thread in a conversation last weekend.
I've for a long time "daydreamed" about the possibility of Corsair level
performance (maybe without some "bells and whistles") in an analog rig,
perhaps with a DDS VFO, of a size range from the Argosy/Argonaut II/Delta II
format up to about the Delta. (Small enough to not take up too much limited
operating desk space but not so small as to have a cramped front panel.)
Another couple of items for the "wish list" would be 1) user serviceable for
reasonably technically proficient owners and 2) avoidance as much as
possible of potentially "unobtanium" parts. This is based on my tendency of
if I like a rig to keep it for a long time. Finally, 3) simple,
straightforward, and easy to use. Give me a knob for a function, not a
multi-layer menu.
Just my $0.02 worth....
73, Al
On Thu October 2 2014 7:56:52 am Barry N1EU wrote:
> (in an attempt to unhijack the thread)
>
> Steve, I think it's a great idea. Alternate solution would be
> redesign/modenization of individual circuit boards that could be done
> as a community project for all those Corsairs out there. The if/af
> board would be a prime target.
>
> 73, Barry N1EU
>
> On Thu, Oct 2, 2014 at 12:44 PM, Rick - DJ0IP / NJ0IP <Rick@dj0ip.de>
wrote:
> > Most of the time, when I'm tuning the bands I have my eyes closed.
> > Otherwise I just put a brown paper bag over the Eagle and get on with
it!
> > ;-)
> >
> > 73 - Rick, DJ0IP
> > (Nr. Frankfurt am Main)
> >
> >
> > -----Original Message-----
> > From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of
> > Martin Sole
> > (HS0ZED)
> > Sent: Thursday, October 02, 2014 2:27 PM
> > To: Discussion of Ten-Tec Equipment
> > Subject: Re: [TenTec] Modern version of the Tec Tec Corsair - please
> > Ten Tec!
> >
> > You're right indeed!
> >
> > Now 11 deg N and 100 deg E is a place where the band conditions
> > rarely exceed those of the 60's so my KWM2A still holds up well most
> > of the time though I wouldn't use it in a pile up for a new one or a
> > contest, for sure you then see it fall flat on it's 50's designed
> > faceplate. As to the filter, again, no good in EU today but in the
> > right environment it still has a certain something. Hard to put the
> > finger on.
> >
> > I never liked the look of the Eagle. Great performer though it no
> > doubt is. Put it in a bigger box with a Collins S line style front
> > panel with more knobs and I'd probably buy a dozen, heat not required!
> >
> > Martin, HS0ZED
> >
> > On 02/10/2014 14:42, Rick - DJ0IP / NJ0IP wrote:
> > > As nice as its audio was, the KWM-2 would not be very good with
> > > today's crowded bands.
> > > The famous "Collins mechanical filter" was not really very good by
> > > today's standards.
> > > A 4-pole crystal filter on 455 kHz is as good or better and of
> > > course you can buy 6 or 8 pole filters now.
> > > And the DSP filters on lower frequencies are even better, sharper,
> > > and have steeper skirts.
> > >
> > > As long as we're dreaming, I wish I had 1960's band conditions again!
> > >
> > > All things considered, it's hard to beat the Corsair with its
> > > combination of good audio and good crystal filters.
> > > Newer radios have better filters but worse audio.
> > >
> > > For my money, the best compromise is the Eagle.
> > >
> > > 73 - Rick, DJ0IP
> > > (Nr. Frankfurt am Main)
> > >
> > >
> > > -----Original Message-----
> > > From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of
> > > Martin Sole
> > > (HS0ZED)
> > > Sent: Thursday, October 02, 2014 11:37 AM
> > > To: Discussion of Ten-Tec Equipment
> > > Subject: Re: [TenTec] Modern version of the Tec Tec Corsair -
> > > please Ten Tec!
> > >
> > > I've long liked the analogue radio sound. So far my all time fave,
> > > just for the audio, is a KWM2 with that big 6x4 speaker, something
> > > about that warm sound seems magical. Next up from my current
> > > radios would be my Omni V. Not sure how that might differ from the
> > > Corsair but whilst generally pleasant it's not in the KWM2 league.
> > > Then the Orion 565 and Elecraft K3, bit of a mixed bag these two
> > > as they are both very variable but I've not yet been able to
> > > recreate the analogue sound. I might need to experiment with
> > > amplifiers right at the point the signal becomes analogue. A god
> > > analogue audio amp with LTP input and complementary pair output in
> > > discrete silicon feeding a big speaker,
> >
> > might sound very different.
> >
> > > The TS940 had good audio too but for me about the same as the Omni
> > > V
> > >
> > > Martin, HS0ZED
> > >
> > > On 02/10/2014 12:03, Barry N1EU wrote:
> > >> On Wed, Oct 1, 2014 at 5:12 PM, John Farler
> > >> <k4avx1@windstream.net>
> >
> > wrote:
> > >>> I have a Corsair II with the DDS VFO, which works nicely. I
> > >>> think it's a single conversion though.
> > >>
> > >> Normally it converts to 9MHz, then to 6.3MHz, and then back to
> > >> 9MHz, unless you bypass the 6.3MHz PBT i.f. which can be done
> > >> fairly easily but you lose PBT and narrow filters and don't gain
much.
> > >>
> > >> I agree on the CAT comment. I always dreamed of adding a CAT
> > >> port to the DDS cpu firmware.
> > >>
> > >> 73, Barry N1EU
> > >> _______________________________________________
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