Hi Jim,
That's a fantastic work. Thanks!
Great reuse of existing data.
I hope this will be an eye opener for manufacturers.
With the TS-590s and TS-990s Kenwood engineers seem to have understood the
importance of it, like Elecraft did.
I hope this will not fortuitous for Yaesu and that with Icom they will apply
that even to their low-end rigs.
73,
Yan.
---
Yannick DEVOS - XV4Y
http://xv4y.radioclub.asia/
http://varc.radioclub.asia/
Le 8 sept. 2014 à 23:00, cq-contest-request@contesting.com a écrit :
> Message: 2
> Date: Sun, 07 Sep 2014 10:13:00 -0700
> From: Jim Brown <k9yc@audiosystemsgroup.com>
> To: cq-contest@contesting.com, 'cwops' <cwops@yahoogroups.com>
> Subject: [CQ-Contest] Rig Comparisons for Transmitter Noise
> Message-ID: <540C921C.1090209@audiosystemsgroup.com>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> Over the last decade or so, Rob Sherwood's extensive work on receiver
> performance has done much to improve the receivers in modern rigs, but
> transmitters have been sadly neglected.
>
> A month or so ago I began work on a project to compare ARRL test data
> for selected rigs, focusing on the trash they generate. I shared an
> early version of that work on the Elecraft reflector, and it seems to
> have found it's way to Yaesu, who has just put new firmware on their
> website to improve the CW waveform.
>
> I've done a lot of work on the piece since then, and it's near its final
> form. If you're thinking about buying a new rig, it should give lots of
> food for thought.
>
> http://k9yc.com/TXNoise.pdf
>
> Also, if you haven't already done so, see the slides for K6XX's
> excellent presentation on Signal Cleanliness, which, among other things,
> shows how we can set up and operate our existing rigs to produce a
> cleaner signal.
>
> k9yc.com/K6XXAmpTalk.pdf
>
> 73, Jim K9YC
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