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Re: Fwd: New Sherwood report

Posted by David Gilbert on Dec 02, 2010; 3:46am
URL: http://elecraft.85.s1.nabble.com/Fwd-New-Sherwood-report-tp5793377p5794731.html


The reason that key clicks bother me so much more than poor TX IMD on
SSB is that in a SSB contest so many people have such abysmally crummy
audio due to excessive mic gain and compression anyway.  TX IMD 25 or 30
db down from the main signal doesn't hold a candle to splatter only 5 or
10 db down.  On CW, it takes a pretty damn poor TX to create
off-frequency trash in the absence of key clicks.

That's why ...

Dave   AB7E



On 12/1/2010 7:27 PM, juergen wrote:

> Hi Ken
>
> The Ft5000 has better PA than the K3. Its IMD performance is way superior to the K3 especially on the higher bands and 6 meters. It smacks of double standards harping on about Yaesu Keyclicks and ignoring SSB transmitter IMD especially on the K3 when it is so marginal.
>
> Unnecessary wide transmission on any mode is bad for all of us.
> The key click issue and SSB IMD issue has same bad effect.
> Its wise not to throw stones in glass houses.
>
> I wish Elecraft would release a better PA using fets for the K3.
>
> The Yaesu FT5000 certainly has a better PA than the K3.
>
> The Ft5000 has superb transmitter IMD, far superior to the K3's transmitter.
>
> I find it interesting that so many observers harp endlessly about the Yaesu
> Keyclick problems and totally  ignore the issue of the K3's poor SSB IMD.
>
> The Yaesu Ft5000 has the edge in this department.
>
> 73
> John
> --- On Wed, 12/1/10, K9ZTV<[hidden email]>  wrote:
>
>> From: K9ZTV<[hidden email]>
>> Subject: Re: [Elecraft] Fwd: New Sherwood report
>> To: "[hidden email]"<[hidden email]>
>> Date: Wednesday, December 1, 2010, 2:26 PM
>> I agree.
>>
>> Where is the edging out?
>>
>> Sherwood sorts on Dynamic Range-Narrow Spaced, and both
>> rigs are 101db
>> at 2 Kcs.
>>
>> I'm confused by Bob's statement that it "edges out" the
>> K3.
>>
>> If you take the other parameters into consideration, the K3
>> should be
>> listed first and the 5000 listed second.
>>
>> 73,
>>
>> Kent  K9ZTV
>>
>>
>> On 12/1/2010 3:18 PM, Wayne Burdick wrote:
>>> Pretty close to a dead heat between the K3 and the
>> FT5000, except for blocking dynamic range (K3 is better by
>> 13 dB) and filter ultimate attenuation (K3 is better by 15
>> dB).
>>> Not bad for a 9-pound rig that starts at $1400.
>>>
>>> That said, I will now disqualify myself from the rest
>> of this thread :)
>>> 73,
>>> Wayne
>>> N6KR
>>>
>>>     Ed wrote:
>>>
>>>> http://www.sherweng.com/table.html
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