K3: New (Jan 2009) ARRL review

[dhhdeh]

Hi All,

I don't know about you, but this recent ARRL review makes me extremely
proud to own a K3 and be affiliated with this company and all its
talented staff.

And it's an American company to boot. Would you ever imagine....

Happy Thanksgiving Eric, Wayne, Lyle, et.al at Elecraft.

You should all be very proud of the K3 project and what you have
accomplished. Outstanding.

73 de N1LQ-Dave


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[Alan Bloom]

Congratualations to Elecraft for the great QST review of the K3.

I noticed that the blocking gain figures at 5 and 1 kHz offset are much
worse on 6 meters (128/124 dB) than on 20 meters (140/140 dB).  At 20
kHz offset the numbers are comparable.

The only reason I can think of for that is worse phase noise on 6
meters.  Or is it just a typo in the QST review?

Al N1AL


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[Bill VanAlstyne W5WVO]

I would also be very interested in the answer to this question. I
was surprised to see these BGC numbers for 6 meters. As a 6-meter
SSB op who lives or dies with the summer VHF contests each year,
where 40-over-S9 sporadic-E propagated signals are packed
elbow-to-elbow on 50 MHz, this is a very important parameter!

Could Wayne or Eric or Lyle provide some insight into this? Would
be very grateful. Hopefully this was just an aberration in the
tested K3, or perhaps a typo, as has been previously mentioned.

Also, I'd appreciate any feedback on the dynamic range degradation
measured with the 1.8 kHz roofing filter. I have one I purchased
recently but have not yet installed it. Was there a "bad batch"?
How can I know?

Bill W5WVO


----- Original Message -----
From: "Alan Bloom" <[hidden email]>
To: "David and Dianne on Comcast" <[hidden email]>
Cc: <[hidden email]>
Sent: Tuesday, November 25, 2008 4:25 PM
Subject: [Elecraft] 6 meter blocking gain in K3 QST review


> Congratualations to Elecraft for the great QST review of the K3.
>
> I noticed that the blocking gain figures at 5 and 1 kHz offset
are much
> worse on 6 meters (128/124 dB) than on 20 meters (140/140 dB).
At 20
> kHz offset the numbers are comparable.
>
> The only reason I can think of for that is worse phase noise on
6

> meters.  Or is it just a typo in the QST review?
>
> Al N1AL
>
>
> _______________________________________________
> Elecraft mailing list
> Post to: [hidden email]
> You must be a subscriber to post to the list.
> Subscriber Info (Addr. Change, sub, unsub etc.):
>  http://mailman.qth.net/mailman/listinfo/elecraft
>
> Help: http://mailman.qth.net/subscribers.htm
> Elecraft web page: http://www.elecraft.com
>

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