See the images below for location details. The Limited Warranty does not cover damage caused by any attempt to modify an apparatus for out-of-Amateur-band operation, nor does the Limited Warranty cover damage to components that may result from out-of-Amateur-band use. A Digital Communications Guide.Use of any Amateur Radio product outside of the Amateur band is at the users own risk, and no guarantee of compliance with specifications outside the Amateur bands is expressed or implied. If so, have the radio repaired professionally. Note which lead goes where! Finally, reassemble your radio and enjoy the thing! Next, transmit a carrier of 5 Watts. Most microphone connectors on newer rigs do supply this voltage. Remove the 4 screws holding the plate to the bottom of the microphone, Locate the 2 square solder pads see picture jumper these 2 pads to increase the audio. There is a hidden feature of the Yaesu MD microphone that when you enable the filter mode main switch in FLT you can increase the audio. This Compound has also proven to be better than what was used before. Ideally the coupler balance should be adjusted, however I have not determined how to do that procedure as yet. I have opted to set the idling current after the fans have kicked in. Note 1: The idling current will tend to increase as the devices heat up. Be sure to test FM and AM output as well, all should be working. You should now see a current reading on the Amp meter of circa 2. I have now reset the BIAS on both finals, each to 1. FT-991 setup for digital modes (with only a USB cable) Indeed, I did find a glaring anomaly AND another issue. Lazerbaijan bs vicino al popolo italiano.

Ft 991a service menu