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Hello All, Looking for a little help on the FT-847 EXT ALC Cable. I could find no reference to a part number in my manual. I did locate on pg 14 both the STBY Cable and the ALC Cable. Was the ALC Cable ever available from Yaesu? Please sign your posts ( GW3FSP - Moderator )

Hello everyone, I bought a second hand Yaesu FT847 and then I was build a isolated interface for DATA IN/OUT port. It works very well but I haven't build null modem cable for CAT control. I am not familiar with the CAT communication protocol. I use FTDI for PTT control. In FTDI, RX and TX ports are empty and I want to use these ports because I want to using interface one USB cable. Of course, using optocoupler. How can I do it? How should I connect the optocouplers or what kind of circuit should I create? Thx and 73.

? Dear group, Perhaps if I explain a little background and what I’ve tried it may help to prevent things I’ve done being repeated. GreenCube is my problem! Working GreenCube is a nightmare because of one reason, it’s a satellite and it’s also a digipeater. Every program I’ve tried will happily tune the main VFO but will not change the sub VFO. PSTrotator, HRD etc. OmniRig does not seem to like to change the sub VFO while it’s tuning the main VFO. The FT847 has a major drawback though. In satellite mode split mode this is achieved easily because the bands are V/U or U/V uplink and downlink and full duplex but GreenCube sits on the same frequency (bar Doppler correction). So the radio will “error” when trying to TX on the same band, that’s common knowledge. The issue is when in split mode (the only real way to work GreenCube and Doppler shift), as above, all software shows the VFO change in software but not on the radio. I’ve had extensive conversations with Codrut (PSTrotator) and after many adjustments to his software he can’t manage to get the sub VFO to alter with the main VFO. The nearest I’ve been to achieving this was in HRD and setting the Uplink and Downlink manually but as above only the “main” downlink VFO would alter. I know that some versions of the FT847 had some issues with asynchronous communications but this wouldn’t affect the communication when altering the frequency. I plan to inspect the bit data and see if sub-VFO commands are actually being sent. I’ve successfully sent manual commands to turn on sat mode, LSB/USB mode, enter frequencies etc. I wonder if anyone has any thoughts on this? FT847_CAT PDF Document · 297 KB Please see the list of CAT commands but none mention Split?! And there isn’t a provision for altering the sub-VFO in the command structure that I can see!. Is it actually possible? Even repeater mode would’t work as it would have a constant frequency indifference and not change with Doppler bringing uplink and down link together at 90degrees (straight above would probably have 0 Doppler shift). Any thoughts appreciated, De Spence M0STO Sent while portable! please excuse typos.

To the group; My trusty FT-847 has stopped transmitting on all bands (HF>UHF) on SSB, CW and AM modes. It does work OK on the FM mode - TX audio via mic is OK. I did try swapping the TX & RX filter modules with no change. I also reset the uP using menu #39 without any success. Any suggestions on where to start troubleshooting? Thanks and 73, Steve W1SMS

My FT847 do not have any s meter reading. Audio seems ok as tx also. Where to look pse for this issue? 73 CU3AK Eloy