409shop also has cables, which work fine for me.
For a few bucks more, I got a multi-cable kit that had like 6-in-1 interchangeable tips that worked with my vx-2,3,6 and ft-7900 (should be same din plug as 7800/7900/8800/8900).
if you are so
inclined to build your own cable (I think you can find these din plugs in pc junk bins), this is a good reference for pinout:
On Thursday, November 21, 2013 4:09 PM, Aubrey
Turner <aubrey.c.turner@gmail.com> wrote:
I presume you are referring to the FT-8800R?
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http://www.valley-ent.com/catalog/yaesu-ftdi-programming-cable-ft7800-ft8800-feet-p-561.html
Note that the above cables are a little pricey, and you can find
better prices on eBay. But I picked this vendor in particular
because they use the FTDI chipset in their USB cables, which usually
just works for people as soon as the driver is installed. The cheap
cables on eBay often use cloned chips that are based on Prolific
chips, and Prolific has booby-trapped the later versions of the
driver to fail with these cloned chips, so you have to jump through
some hoops to get them to work (i.e. load older drivers and disable
automatic driver updates). At least this is the case with Windows
and USB. This isn't an issue with the RS-232 version (as there is
no need for a USB-to-serial chip). It's also not an issue with USB
on with Mac or Linux.