Ok Steve...here is my situation...
I have an old Corsiar II that I am using for casual listening with a 500 hrz
cw filter..
I currently use a Pegasus for psk mostly, but I notice it sounds better to
my poor ears ( I wear hearing aids in both ears) than the Corasir II does.
I hardly work any ssb at all, just some digitial modes...
Ten Tec has used Omni VI's comming in all the time these days, upgrading to
the new Orion I assume.
I am tempted to pick up one of those..but which one?? What is the advantage
of the Omni VI, same with option 2 and same with option 3?? Thanks in
advance...
----- Original Message -----
From: "Steve N4LQ" <n4lq@iglou.com>
To: <tentec@contesting.com>
Sent: Sunday, December 19, 2004 7:33 AM
Subject: Re: [TenTec] Omni 6 sensitivity
The Corsair II would drive you nuts in that situation. It's audio derived
AGC would pop your eardrums on the stong signals so you reduce the RF gain
then you can't hear the weak one's while the Omni VI's AGC is the
smoothest one around. No comparison.
Steve N4LQ
----- Original Message -----
From: "denton" <denton@oregontrail.net>
To: <wf2u@starband.net>; <tentec@contesting.com>
Sent: Sunday, December 19, 2004 10:25 AM
Subject: Re: [TenTec] Omni 6 sensitivity
Wonder how an Omni VI compares to a Corasir II in similar circumstances?
thanks de Denton WB7TDG
----- Original Message -----
From: "WF2U" <wf2u@starband.net>
To: <tentec@contesting.com>
Sent: Sunday, December 19, 2004 6:37 AM
Subject: RE: [TenTec] Omni 6 sensitivity
I recently got rid of an Icom 756 in favor of the Omni VI Opt.3.
Side-by-side comparison showed that the Omni VI has a definite edge in
weak-signal reception. The difference may be attributable to lower phase
noise in the Omni VI. The 756 DSP wasn't up to snuff clarifying mushy,
noisy
signals. The Omni VI DSP seems to work better. The IC-756 could never
hear
weak signals in the "holes" in between strong stations, where the Omni
VI
picks up some nice activity.
The PBT is different - in the Omni VI you can lose the station if you
don't
retune the frequency when the station gets out of the passband. In the
Icom
radios (I also had an Icom 740) passband tuning doesn't shift the center
frequency.
In fact, my Omni-C beats the IC-756 in weak-signal work, except the lack
of
PBT makes it harder to dig out weak signals in between strong stations.
73, Meir WF2U
Landrum, SC
-----Original Message-----
From: tentec-bounces@contesting.com
[mailto:tentec-bounces@contesting.com]On Behalf Of DennisKT5D@aol.com
Sent: Sunday, December 19, 2004 5:19 AM
To: tentec@contesting.com
Subject: Re: [TenTec] Omni 6 sensitivity
I had an Icom-765 for awhile which sported a very good
receiver comlete
with all the filters for cw work. It had the PBT and IF shift
mods done as well.
I sat it down beside the Omni 6+ and did some testing. Ambient
noise level on
both was almost identical with perhaps the edge to the 765. At
the time the
765 was matching up with some plans I had for reconfiguring the
shack so I was
about to decide to sell the Omni 6+. Then the CQ WW CW DX contest
came along.
After A/B comparison during the contest, I abruptly changed my mind
about
reconfiguring the shack and selling the Omni.
What I discovered was this. I could tune between two strong US
stations a
couple of kHz's apart with the Omni and copy a weak DX station, 3 to 4
s-units, easily. Switching to the 765, I absolutely could not
hear the weak DX
station. All I heard was an elevated noise floor due to the close
in strong US
stations. Clearly, to my ears the Omni is the superior contest
rig of the two. The
765 could hear as well as the Omni in non-contest conditions so
sensitivity
was not an issue. Both radios exhibited the high pitched hiss on
white noise
but again, the 765 wasn't quite as bad as the Omni. The
selectivity was what
really separated the two radios in contest performance.
If your radio doesn't seem to be as sensitivity as it should
be perhaps
there is a problem with it. The Omni's reputation is well earned
here and the
765 is gone.
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