While you can operate perfectly “fine” without CAT control for many digital modes (including plain vanilla FT8), you need to be mindful of the placement of your transmitted signal to ensure you aren’t bumping against the edges of your transmit filters, i.e. the high and low ends of the waterfall. Hitting the TX filter edges can cause issues with power rolling off and (more importantly) it can cause issues with signal distortion or IMD. Remember that on many bands there are quite a few signals packed into a small space and one person with a “rough” signal can ruin a whole lot of other Op’s QSO’s.
CAT control simply makes this whole process easier. It’s also highly recommended when using DXPedition Mode as a “hound” (same reason as above). Jim S. N2ADV From: Alan VK2ZIW <bea...@unixservice.com.au> Sent: Monday, October 8, 2018 9:42 PM To: WSJT software development <wsjt-devel@lists.sourceforge.net> Subject: Re: [wsjt-devel] Yaesu FT-847 Hi all, Why do you need CAT control at all? What's really needed is a rig with Stability. Any rig with a digital VFO will do. My 2c. Yes, I have an FT-840 and it's OK. Alan VK2ZIW On Mon, 8 Oct 2018 10:54:42 -0400, Karl Heinz Kremer wrote > FT-840UNI would be OK. “Early” or “NoGet” would require the user to know more > about what’s going on with these devices. > > Karl Heinz - K5KHK > > > On Oct 8, 2018, at 10:52 AM, Black Michael <mdblac...@yahoo.com > <mailto:mdblac...@yahoo.com> > wrote: > > What can we call these earlier rigs to make the apparent in the riglist? > > FT-840EARLY ??? > Or > FT-840UNI (unidirectional) > FT-840NOGET > > Or any better idea? > > de Mike W9MDB > > > > > > > On Monday, October 8, 2018, 9:47:05 AM CDT, Karl Heinz Kremer <k...@khk.net > <mailto:k...@khk.net> > wrote: > > > > This also seems to be the case with my early Yaesu FT-840 - it can receive > CAT commands, but does not report anything back. > > > Karl Heinz - K5KHK > > > On Mon, Oct 8, 2018 at 10:44 AM Black Michael via wsjt-devel > <wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> > > wrote: > > What version of WSJT-X are you using right now? > > Looks like we need a new rig entry for the earlier serial #'s and I can build > you one for testing. > > de Mike W9MDB > > > > > > > On Monday, October 8, 2018, 9:34:22 AM CDT, Shane Stroud > <shanestroud1...@hotmail.com <mailto:shanestroud1...@hotmail.com> > wrote: > > > > I have discovered that the early serial numbered models of the Yaesu FT-847 > had unidirectional CAT. Basically, the software can send frequencies and > modes to the rig, but the rig cannot respond. This applies to serial numbers > through about 8GXXXX. Mine is an 8EXXXX series. > > In any version of WSJT, under any operating system, the rig will set > frequency and mode, then error out because it cannot respond to polling. > > I'm not sure if this needs fixed in WSJT or in hamlib, but other hamlib > programs seem to work with the rig without issue. > _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/wsjt-devel _______________________________________________ wsjt-devel mailing list wsjt-devel@lists.sourceforge.net <mailto:wsjt-devel@lists.sourceforge.net> https://lists.sourceforge.net/lists/listinfo/wsjt-devel Alan Evil flourishes when good men do nothing. Consider the Christmas child. --------------------------------------------------------------------------- Alan Beard Unix Support Technician from 1984 to today 70 Wedmore Rd. Sun Solaris, AIX, HP/UX, Linux, SCO, MIPS Emu Heights N.S.W. 2750 Routers, terminal servers, printers, terminals etc.. +61 2 47353013 (h) Support Programming, shell scripting, "C", assembler 0414 353013 (mobile) After uni, electronics tech
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