[TenTec] Omni 6 sensitivity

[denton]

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 at iglou.com>
To: <tentec at 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 at oregontrail.net>
> To: <wf2u at starband.net>; <tentec at 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 at starband.net>
>> To: <tentec at 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 at contesting.com
>>>> [mailto:tentec-bounces at contesting.com]On Behalf Of DennisKT5D at aol.com
>>>> Sent: Sunday, December 19, 2004 5:19 AM
>>>> To: tentec at 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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>>>> TenTec at contesting.com
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>>>>
>>>
>>> _______________________________________________
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>>>
>>>
>>
>>
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