James, noise and IMD are two totally different things.
The Eagle has slightly worse IMD than the TS-590 but the Eagle is not noisy.
The TS-590 generates broadband noise across the entire HF spectrum.
The Eagle does not.
End of story.
Forget your silly statistics, no place for them here.
73 - Rick, DJ0IP
(Nr. Frankfurt am Main)
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of K8JHR
Sent: Friday, July 25, 2014 10:40 PM
To: n4py3@earthlink.net; Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] Rigs at WRTC
On 7/25/2014 9:45 AM, Carl Moreschi wrote:
> 1) The older Flex 5000 and 3000 suffer from what Rob calls the "Field
> day problem". This is when very strong signals from very close
> stations cause the front end to collapse.
====================================================
Maybe the Eagle is too noisy for a crowded contest or Field day setting.
I am still trying to sort this one out.
In a previous thread someone was weighing the choice between getting the
Kenwood TS-590s or the TT Eagle. Somebody said the 590 is a poor choice
because it has an unduly noisy transmitter and does not play well with
others in a crowded contest or Field Day shack.
OF COURSE, THIS IS A VALID CRITICISM ONLY IF THAT TRAIT IS UNIQUE TO THE
590 and not also suffered by the Eagle.
I suggested the whole argument statistically insignificant, based on fewer
than 10 out of maybe 15,000 units in service. To support the claim, Rick
submitted a couple of slides from one of Rob Sherwood's famous presentations
- which show the Eagle produces more transmit IMD than the 590. You can see
those two slides here:
https://www.flickr.com/photos/minirichards/14602437252/
Someone suggested Rob Sherwood could prove it, so I asked him about it, and
he clearly said he has NO OTHER DATA concerning broadband noise concerning
these two radios. He said the slides Rick mentioned show transmitter IMD,
only, and said this different from broadband
transmitter noise. I understand K4TAX actually measured a pair of
590s, but two out of maybe fifteen thousand units is hardly statistically
significant and falls short of proving all 590s are problematic. I recall
something to the effect that the Eagle is noisier in some ways, and the 590
is noisier in other ways.
As the charge is not unique to the 590, it hardly constitutes a basis for
choosing one rig over another, and (while I hate to knock any team I am on)
the evidence is either inconclusive as to either rig, or tends to support
the claim the Eagle is the noisier of the two. No one has brought forth any
other data.
This is why I hesitate to buy an Eagle, even on sale, and one of the reasons
I sold my TS-590. But, seeing a couple of 590s used by high ranking
contestants sorta makes me sorry I did that. Rick kept telling me the 590
causes problems in a contest shack, so I sold it. But if the Eagle is no
better, then perhaps I don't want it, either.
----------------------- K8JHR ---------------------
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