Since I love to experiment and I Love Linux, I just connected the Mic port to The TxD and RxD serial pins on a Raspberry Pi Zero W I had lying around and ran CHIRP on the Pi.  This works because the underlying signal voltages used by the radio and the Pi are both 3.5V. The RaspBerry Pi Zero W, is roughly the same cost as the SCU-35 or an RT systems cable. Don't try this unless you like to tinker. If you do like to tinker, use a 2.5mm TRS plug. the "data" is on the ring and the GND is on the sleeve. connect "data" directly to the Pi's RxD and via a 2K resistor to the Pi's TxD. Connect the Pi's GND to the plug's GND. It works just fine.

My setup is now a bit more complicated. I now use the cheaper, smaller, more more powerful NanoPI Duo, and it supports CHIRP and Direwolf (packet radio) with a single more complicated cable, so I do not need switch cables to switch from CHIRP to Direwolf.  Please don't try this  yourself until I can get my act together and document this mess.

On Thu, Aug 15, 2019 at 6:13 PM John Beall <beall.john@gmail.com> wrote:
Yeasu doesn't support CHIRP but own can download the firmware from they're website as well one Can order the Cable. The Firmware is free and the Cable is around $22.00! 

On Thu, Aug 15, 2019, 8:22 PM John Higby <KJ7HEL@hotmail.com> wrote:
I thought I saw that the USB-57A was compatible, but it's actually the USB-55.

Thanks for sorting me out !!


73

kj7hel


From: chirp_users-bounces@intrepid.danplanet.com <chirp_users-bounces@intrepid.danplanet.com> on behalf of Dan Clemmensen <danclemmensen@gmail.com>
Sent: Thursday, August 15, 2019 5:10 PM
To: Discussion of CHIRP <chirp_users@intrepid.danplanet.com>
Subject: Re: [chirp_users] Yaesu FT-4X Download Problem
 
I have never used that cable, so I cannot comment. Does it work with the Yaesu software?

Colleagues: have any of you used that cable successfully with FT-4 or FT-65?

On Thu, Aug 15, 2019 at 4:50 PM John Higby <KJ7HEL@hotmail.com> wrote:
USB-57A which is listed for the FT-4X. Windows 7.  I believe I'm using the latest daily download.


73

kj7hel
From: chirp_users-bounces@intrepid.danplanet.com <chirp_users-bounces@intrepid.danplanet.com> on behalf of Dan Clemmensen <danclemmensen@gmail.com>
Sent: Thursday, August 15, 2019 4:34 PM
To: Discussion of CHIRP <chirp_users@intrepid.danplanet.com>
Subject: Re: [chirp_users] Yaesu FT-4X Download Problem
 
What cable are you using? (also, what OS and what CHIRP version?) The FT-4X and related radios use a half-duplex connection with TxD and RxD on the same wire. The Yaesu SCU-35 cable works, of course. but if you are using another cable you may need to modify it. I use a trivial connection via resistors to the serial port on a Raspberry Pi.

I need to get back into CHIRP programming, so I guess I'll fire up my FT-4X and play some more.

On Thu, Aug 15, 2019 at 4:11 PM John Higby <KJ7HEL@hotmail.com> wrote:
New..Yaesu FT-4X...never been programmed, won't download & doesn't offer an Upload option. Chirp starts ...then error...failed to communicate with radio: Incorrect ACK on serial report. 

ANY help appreciated.

73
John
kj7hel
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