Back in the '60s hams made bad signals with soldering irons. Now we do it with knobs. _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting
Gary, the kind of noise I'm speaking about is probably not going to be heard or seen at the far end. But your neighbors will hear it and your field day buddies will hate you. I understand how most of
I have experienced this in spades, especially from FT-1000 variants and TS-930S. 73, Barry N1EU _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.
It is very easy to test without a spectrum analyzer. All you need is two transceivers, a good one (eg. any Omni, Orion, or Eagle), and one of the cheaper ones. Then you need two antennas with reasona
I'm using a FLEX-1500 (http://www.flex-radio.com/FLEX-1500_Current.pdf) as a separate receiver. While the FLEX-1500 can be slaved to the OMNI-VII (frequency) using DXLab Commander (and the N4PY sub-r
Well said, CS. -- K8JHR -- Agency rules are just the starting point when it comes to administrative law (the law dealing with administrative agencies). _______________________________________________
This is interesting as I have a TS-930S. The old QST review showed that its TX IMD performance was middling at best: 3rd order is -25 dB and 5th order is -42 dB. Somewhere, I read that increasing the
Oh Pshaw... Under your theory, CS, then it means anyone who buys all brand new TenTec equipment directly from the factory, has no right to expect his radio and amp to be within specification and oper
Author: "Charles P. Steinmetz" <charles_steinmetz@lavabit.com>
Date: Tue, 18 Jun 2013 02:01:59 -0400
Under your theory, CS, then it means anyone who buys all brand new TenTec equipment directly from the factory, has no right to expect his radio and amp to be within specification and operating proper
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 ____________________________________________
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 pur
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
Yes, indeed: the introduction the PLL lead to wonderful flexibility in frequency coverage and generation along with mounds of phase noise. The phase noise has been largely corralled, but not IMD. I w
Yes, of course a BPF will help. The current cost of a set of BPF's for the classical ham bands (but not the WARC bands) is $800 - more than some of these transceivers cost. I maintain the OEMs could
Reply No. 2 on this, Kim... I thought K0RF was now running an FT-5000 in class A mode, driving a very good linear. As such, I assume you are speaking historically. You shouldn't have any problems wit
Sorry for the delayed response. Yep, I misunderstood: no amount of filtering on a rx will fix a poor tx. Nothing can be done about transmitted phase noise or poor IMD of a tx once it leaves the tx. I
Kim, you may have just come up with a great concept for planning a contest radio station. "Always live south of your competitors". It's the same over here too, we almost never point the beam south. Y
I wish I could say I had such prescience! Alas! I don't. Kim N5OP "People that make music together cannot be enemies, at least as long as the music lasts." -- Paul Hindemith _________________________
It is a little different here in Michigan... we can work South America and Africa along grey line during at least part of the contest, so aiming the beam due south is a good idea. I think SA stations
James, that is just for a few multipliers. You don't point it south and call for hours. The masses of the participants are in USA, Europe, and Japan. You have you beam pointed in those directions mos