SDR interface for the FT-991

Follow the steps below to install the IFace card in the YAESU FT-991. Installation is really very easy.

As always we start from the block diagram and try to find information on where to get the first intermediate frequency signal. We use the first because it is not filtered, i.e. the band is still wide. The following images make it very clear where this point is located. The PTT may not be necessary, the TX and RX circuits are well separated. The power supply can be taken from the TP1034 near the J1018 connector.

At this point all that remains is to identify the points on the PCB where to take the signals: refer to the following images.

If you are convinced of the goodness of the proposal buy an IFace using the button below.


WARNING: Although the installation of IFace is not difficult, it is done at your own risk. TSP S.r.l. is not responsible for any damage, unwanted side effects or anything else.

For more information do not exist to write to us.
Have fun!

List of the radio mods to apply the IFace

Here below you can find links to the articles that describe how to modify your radios to insert an IFace interface into them. For those radios that are not included yet, send a request so that it can be entered as soon as possible.

IC-746PRO TS-450S/690SFT-817
IC-756PROII TS-530sFT-857
IC-7600TS-850FT-1000MP Mark-V
IC-R72TS-2000 – HF/50 MHz
TS-2000 – VHF/UHF
FT-1000MP Mark-V Field
IC-9100 R-5000FTDX-1200
CODAN 9360

ATTENTION: Though installing the IFace is not difficult, you do this at your own risk. TSP S.r.l. is not responsible for any damage, unwanted side-effects or whatever.