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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!

Instructions to install 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, please send a request so that they can be entered as soon as possible.


ICOMKENWOODYAESU
IC-706TS-140s/680s
IC-735TS-430s
IC-746PROTS-440FT-450D
IC-7400
IC-7410
TS-450S/690SFT-817FT-818
IC-756PROTS-480FT-857
IC-756PROII
IC-756PROIII
TS-530sFT-891
IC-775 / DSPTS-570DGFT-897
IC-781TS-590S/590SGFT-950
IC-7000TS-790FT-991
IC-7100TS-830sFT-991A
IC-7600TS-850sFT-1000
IC-7700TS-870sFT-1000MP Mark-V
IC-R72TS-950S/SD
TS-950SDX
FT-1000MP Mark-V Field
IC-9100 TS-2000 – HF/50 MHz
TS-2000 – VHF/UHF
FTDX-1200
IC-R7000 – use EXT IF
IC-R9000
R-5000FT-2000
CODAN 9360JRC NRD-535
Collins KWM380

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.

If your radio is not yet listed in the table, send us the request and we will prepare the instructions as soon as possible.