I presume you are referring to the FT-8800R? 
--> http://www.yaesu.com/indexVS.cfm?cmd=DisplayProducts&ProdCatID=106&encProdID=FD01F8F398F2B94A9C9F4299F3D18732&DivisionID=65&isArchived=0

If you are wanting to use CHIRP with this radio, all you need is the right cable.  No need to build anything unless you are into tinkering with electronics, as there are plenty of them on the market.

If you are lucky enough to still have an RS-232 port, here's a serial version:
- http://www.valley-ent.com/catalog/yaesu-programming-cable-ft7800-ft8800-ft8900-p-218.html

If all you have is USB, here's one that should work quite well:
- 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.




On 11/21/2013 03:43 PM, Randy Elliott wrote:
Greetings to the group

Just wondering if anyone can point me in the direction to an interface I can build to communicate chirp with a Yaesu 8800 mobile radio.



Randy Elliott

Email: ve3jpu@me.com

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