At-11Mp Autotuner - Yaesu FT-100 Undocumented

AM Settings
Gary Mitchelson, N3JPU, has done some interesting tests with the AM settings and found
some settings that work much better than the defaults. The parameters that sound the best
are: PO set to 25, Mic gain to 40 to 50 and Carrier Level set to 225 (F51 menu). You can
hear a sample of his testing at: http://mywebpages.comcast.net/n3jpu/
Most owners who have had difficulties with AM audio quality have reported that the 6k
HZ option AM filter (p/n XF117A) is an absolute necessity for both transmitting and
receiving in AM mode.
The following procedure will result in excellent AM transmit operation with the FT-
100(D). The User's Manual does not include any guidance regarding this. For this
discussion I assume HF AM operation.
• Install the 6 kHz filter. You need the filter in order to have proper AM operation.
• Turn on the unit while holding in the A, B and C buttons in order to access the
sub-menu "F" functions.
• Place the unit in AM mode.
• Set the MIC gain setting to 17 (seventeen).
• Using the F51 function, key the mic and set your un-modulated carrier output
power to 25 Watts, no higher.
• That's it. You should now have 100 Watts PEP on voice peaks which is 6 dB (4
times) the un-modulated carrier power.
Extra hints: Set function F15 to 170 in order to avoid non-linear compression on voice
peaks. But note the original setting and restore F15 to the factory setting when you
operate SSB and CW. You should have 100 Watts output in CW mode when F15 is
properly set.
You can use the speech processor during AM operation but you must not exceed a setting
of 17 when using it, just as with non-processed operation. The PROcessor control is
simply a second MIC gain control which over-rides the MIC gain control setting
whenever you enable the PROcessor. The FT-100(D) actually does not allow you to vary
the compression percentage.

AT-11MP Autotuner

Some owners have opted to purchase the AT-11MP auto tuner from LDG Electronics.
This is available in either a kit or assembled format and does not suffer from the
CAT/FC-20 limitations.
There is an accessory for the FT100/D called the OTT or 'One Touch Tune' available
from W4RT.com that allows you to use the 'Tune' button on the FT100 to control the
tuning function of the AT11 directly from the FT100. It also allows you to maintain the
CAT compatibility which is something you normally lose with the FC-20 autotuner.
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