[TenTec] Omni 6 sensitivity

Sun Dec 19 11:17:44 EST 2004

The Pegasus is going to be easier on your ears than almost anything due to 
it's flat audio response, lack of crystal filters and DSP with gentle 
slopes. If you really want the superior selectivity of the Omni VI then you 
need to get one with option 3 and fill up the extra filter slots. using the 
noise reduction feature on cw will also help your ears some. For SSB, you 
will be dissapointed in the Omni VI when comparing it with the Pegasus (FOR 
AUDIO QUALITY). So keep Peggy around.
Steve N4LQ
----- Original Message ----- 
From: "denton" <denton at oregontrail.net>
To: <tentec at contesting.com>
Sent: Sunday, December 19, 2004 11:04 AM
Subject: Re: [TenTec] Omni 6 sensitivity


> 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.
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> TenTec mailing list
>>>>> TenTec at contesting.com
>>>>> http://lists.contesting.com/mailman/listinfo/tentec
>>>>>
>>>>
>>>> _______________________________________________
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>>>>
>>>
>>>
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>>
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>
>
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