Guys, this is EXACTLY what I have been talking about.
BROADBAND PHASE NOISE - not just the 3rd order IMD.
This noise is not just wide, it's across the entire spectrum.
Now hang a 1.5KW linear amp on one of those!
You don't just bother others on your block, you bother those within a couple
of miles.
But of course some of the rigs are also pathetic on the higher order IMD.
NONE are as good as a 1960s Collins 30S-3.
(OK, sure the FT-5000 is if you run it at 75w in class A, but as soon as you
turn on the speech processor, it's hosed too!)
Nearly 50 years, not only have we seen no progress, the IMD has gotten
worse.
73
Rick, DJ0IP
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Duane
Calvin
Sent: Tuesday, June 18, 2013 4:49 PM
To: 'Discussion of Ten-Tec Equipment'
Subject: Re: [TenTec] RF Speech Processor "TX IMD"
Same with the TS-430. I have a neighbor less than 500' away running CW all
the time. When he had his TS-430 he covered a major portion of the band he
was on with transmitted phase noise. It was a pure delight when he up
graded to a TS-570 a few years ago and then I couldn't hear him until I was
within 5-10 KHz of him or so.
73, Duane
Duane Calvin, AC5AA
Austin, Texas
www.ac5aa.com
-----Original Message-----
From: TenTec [mailto:tentec-bounces@contesting.com] On Behalf Of Barry N1EU
Sent: Tuesday, June 18, 2013 9:41 AM
To: Discussion of Ten-Tec Equipment
Subject: Re: [TenTec] RF Speech Processor "TX IMD"
On Tue, Jun 18, 2013 at 1:16 AM, Kim Elmore <cw_de_n5op@sbcglobal.net>wrote:
>
> All that said, I never tried phone with it at FD but I'll give it a
> shot this year as a quick test to see if the IMD wipes out everyone else.
>
>
We use a TS930S on ssb every year at Field Day and it just wipes out the rig
that's down in the cw portion of the same band due to phase noise.
Barry N1EU
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