I was unable to get the Frequency Calibration to work for me due
to multiple vague, unclear portions of the manual that must assume
the user was also the developer or had previously been shown how
to use it.
The following are questions, but they need to be clarified IN THE MANUAL,
not just in reply here.
*Problems:*
A. In this portion:
* In the Working Frequencies box on the Settings → Frequencies tab, delete
any default frequencies forFreqCal mode that are not relevant for your
location. You may want to replace some of them with reliablyknown
frequencies receivable at your location.*
There is no description as to how many local station editions are
sufficient, or if we should delete
ALL frequencies that are difficult to receive locally. How many WWV and
local broadcast stations
are enough?
B. in this portion;
*To cycle automatically through your chosen list of calibration
frequencies, check Execute frequencycalibration cycle on the Tools menu.
WSJT-X will spend 30 seconds at each frequency. Initially nomeasurement
data is saved to the fmt.all file although it is displayed on screen, this
allows you tocheck you current calibration parameters.*
1. What mode does the transceiver need to be in? Leave it in USB-DATA
mode, or change it?
2. Does the cycle really start when I select the Execute Cal menu
choice, or do I then need to
check the MESAURE tick box on screen before it really starts?
C. In this portion:
*To start a measurement session check the Measure option and let the
calibration cycle run for at leastone complete sequence. Note that, while
measuring, any existing calibration parameters are automaticallydisabled so
you may have to increase the FTol range if your rig is off freqeuncy by
more than a few Hertzin order to capture valid measurements.*
So, presumably the user is doing this calibration because they have NO IDEA
how far off their rig
might be. So what is a safe/decent starting point for the FTol range for
new users?
D. In this portion:
* With modern synthesized radios, small measured offsets from 1500 Hz will
exhibit a straight-line dependenceon frequency.* [Which is below the
graphic on page 68]
I am trying this for the first time with a Yaesu FT-DX3000 that I have
never used for digi-modes.
[My previous 4,000 QSOs with WSJT-X have been using an Icom 7300].
I notice the received carrier line at 2500 hz. The graphic on page 68
shows the
received carrier lines at approx 1500 hz.
So it seems there is an approx 1,000Hz offset between my Yaesu FT-DX3000
VFO display
and the WSJT-X waterfall. I don't see this on my Icom 7300.
So next, I went back to FT8 mode, and sure enough, at 7.074 Mhz there was
very little activity.
But if I turned the radio VFO knob to 7.075, the WSJT-X waterfall became
quite crowed as
expected.
Are there any other Yaesu FT-DX3000 users that can explain if this offset
is a Yaesu setting, menu,
or known feature of the Yaesu?
E. In this portion:
*After running Execute frequency calibration cycle at least once with good
results, check and edit the filefmt.all in the log directory and delete any
spurious or outlier measurements.*[which is below the line fitting graph
shown on page 69]
Two questions;
1. After running? How do you stop it? Cycling the Tools menu or
the on-screen measure tick box?
I did manage to get the application to lock up more than once.
2. Delete any spurious measurement? OK, How do I know what is
considered a spurious measurement?
After managing to stop or get the app to lock up, I opened
fmt.all. There is not an example extract of
the log shown in the doc, but mine has Df's that vary as much as +/- 18
hz. What is normal? Is that too much?
The doc should provide guidance to a first-timer on what would be
considered good data and why, so they
know what to delete and what to leave.
3. When I next select tools menu option Solve for Calibration
Parameters, I get a pop-up about
bad data. I assume that is related to not knowing how to prune, per above
comments?
I hope this helps improve the manual for new users like myself.
Cheers,
Neal
N6YFM
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