Audio can be fine tuned using four menu options (06–01 to 06–04) to control high and low frequency cutoff, but after some experimentation I have turned these options off.

Next was enabling the awkwardly named Insertion Point Optimisation (IPO) which switches out the pre-amplifier. It’s interesting to note that this setting can be associated with a stored memory channel, which became relevant later when I used CAT control to program some favourite frequencies. Three programmable Front Panel Function Keys Support for ATAS (Active Tuning Antenna System) The FT-891 fully supports the ATAS-25 and ATAS-120A Active Tuning Antenna System (optional) allowing for plug and play field and mobile operation. Ultra compact design Measuring 6.1” x 2.0” x 8.6” (155 x 52 x 218 mm), The FT-891 is an innovative Multi-band, Multi-mode Mobile/Portable transceiver with an Ultra Compact and rugged case design. Optional FC-50 Antenna Tuner Unit The FC-50 is a microprocessor-controlled antenna tuner that is designed specifically for the FT-891. The FC-50 can be easily coupled with the FT-891 and includes all necessary interconnect cables for operation right out of the box. Specifications Specifications An alternative and perhaps faster method is to press the M>V button. This brings up a multi-line listing of memories that can be scrolled through using the multi-function knob. Pressing the M>V button again copies the selected memory to the VFO and leaves you in VFO mode. This avoids the radio flipping across bands and the associated relay activity. This post will be updated as I have more information to share as my adventures continue with this radio. I’m also going to try to send you to the manual for things that are already there, so keep it handy. Things You Should Do Right Out of the Box

The FT-991 is designed for the most competitive operating situations, with a suite of new features to enhance the experience. Whether you primarily operate at home, mobile or in the field, the FT-991 will provide outstanding fundamental performance plus give you easy access to the full range For this setup, I’m going to assume you have Windows skills to install WSJT-X, know how to use device manager to view connected devices, and know how to find your microphone and phone volume settings. FT-891 transceivers provide a stable 100 watts (25W AM) of high-power output. High reliability is assured by Yaesu's careful circuit design with efficient thermostatically controlled dual internal fans and a diecast heat-transferring chassis. I added a Behringer xm8500 mic, and a homebrew patch cable, and my audio showed dramatic improvement -- but I eventually figured out good enough settings for the hand mic that I do not bother (see my other settings article on this blog). Please pay attention to the ALC, however. Keep it peaking at midpoint. Set it too high, and your signal will appear louder on the meter, but you might splatter. I was skeptical when it was released on the market then found a mint one used in 2021 and I had to try it.

No obscenities, discriminatory, abusive, or other content not suitable in public or for younger readers. The New FT-991A now includes a high-resolution full color 3.5" TFT Touch panel for superior operability and visibility, incorporating a High Speed Spectrum and High Resolution real-time scope with ASC (Automatic Spectrum-scope control) built right in. The 32 bit high speed floating Point DSP (max 3000 MIPS) provides effective cancellation/reduction (DNR) of the random noise that is frequently frustrating while on the HF bands. The highly optimized AUTO NOTCH (DNF) automatically eliminates dominant beat tones, and the CONTOUR, and the APF, are very effective receiver noise reduction tools during HF band operations.This radio is well recommended to anyone searching for a good reliable transmitter (mine does 94 Watts out on SSB from the box) and a good performing receiver (better than my old TS-480hx). After some extensive transmitting periods it gets warm to the touch, but not too warm, nothing to worry about. I use it on ssb with an antlion modmic and get nothing but good audio reports (once the TX equalizer is set to maximum performance). The FT-891 provides stable 100 Watts (25W AM) of high power output. High reliability is assured by the transmitters careful circuit design with efficient thermostatically-controlled Dual internal fans and the die cast heat transferring chassis. Thanks for the comments. Thus-far there seems to be little experience of using the FT891 in the field. There are additional tests found in the radioaficion link below. It sounds like, if you are wanting to amplify this radio, you may want an amp that makes its power at lower drive, for a cleaner signal. I suspect, however, that most buyers of this radio will not be adding an HF amp.

Glad I did and recommend it to anyone who would like a quality, dependable and featured radio for any use, be it at home, mobile or portable. Adjustable signal processing – The aforementioned DSP features can all be tweaked and adjusted, which helps you get exactly the sound you want from this radio.The advanced manual for the FT–891 helpfully provides a section called ‘Tools for Comfortable and Effective Reception’, so I began configuring the radio using the guidance there. Now, go to WSJT-X and verify that signal levels coming in are being heard, and at a level that the software can use. This is shown by the audio level indicator at the bottom left of the screen. The audio level is indicated by a vertical bar. You want the signal at most to be at 80%, lowest around 30%. Adjust your computer microphone level (for the soundcard you are using) until you achieve the audio level needed. Turn the radio volume knob down to a comfortable level for you. I barely want to hear what’s going on. I like to hear it just as an indicator of what’s going on.