Bug #6653

Yaesu FT-7100M connection problem

Added by jason johnson about 1 year ago. Updated 27 days ago.

Status:Feedback Start date:03/30/2019
Priority:Normal Due date:
Assignee:- % Done:


Target version:chirp-daily
Chirp Version:daily Platform:All
Model affected:Yaesu FT-7100M


Problem sending data to FT-7100M, I can download data from Radio to CHIRP, Unable to write data from PC to Radio. Using provided USB to Serial data cable. Radio does acknowledge the pressing of the REV button to start the Upload.

Radio displays error

PC Displays An error has Occurred

Failed to communicate with radio: Failed to read ACK. No response from radio.

Thank you for your support
V/r, Jason KB0EOD

debug.log (3.5 MB) Kevin Joyce, 03/05/2020 12:42 pm

chirp error message.PNG (32.3 kB) Kevin Joyce, 03/05/2020 12:42 pm

debug FT 7100.log (84.5 kB) Kevin Joyce, 03/05/2020 12:50 pm

Related issues

related to Bug #6641: Yaesu FT 7100 Feedback 03/24/2019


Updated by bill K7WXW 8 months ago

I am also seeing this issue. Using Chirp, 081519 release, both mac (10.12.6) and windows (7), valley enterprises programming cable (FTDI) with latest drivers.

I am able to upload data from the FT7100M to Chirp.

On downloads to the FT7100M, after a pause of approximately five seconds, radio displays "ERROR", and there is a Chirp popup, "Failed to read ACK. No response from radio".

With the original, Yaesu supplied, Adams programming software, running in windows (7), FT7100M uploads and downloads work as expected. Have tried multiple versions of the file (empty, one entry, many entries, VHF only, UHF only) all with the same results: works with the Adams programming software, fails with Chirp.

Updated by GA-2S User 8 months ago

Hi Bill,

I don't have that radio but I'm interested in helping debug.

Could you post a debug.log file after opening chirp and attempting to upload?


Updated by Rick Brown 6 months ago

I too have this exact problem. Has this problem been resolved or is there any work being done to debug it?
I can upload a debug report if you wish.

Updated by Bernhard Hailer about 1 month ago

  • Subject changed from FT-7100M to Yaesu FT-7100M connection problem
  • Status changed from New to Feedback
  • Priority changed from High to Normal
  • Target version set to chirp-daily
  • Model affected changed from (All models) to Yaesu FT-7100M
  • Platform changed from Windows to All

All submitters, please provide debug logs as described in the Wiki (How To Report Issues). Without it we can't help and will have to close the ticket.

Updated by Kevin Joyce 27 days ago

Hi Bernhard. Was this resolved? If not, here you go. I'm having the same problem.


Updated by Kevin Joyce 27 days ago

Kevin Joyce wrote:

Hi Bernhard. Was this resolved? If not, here you go. I'm having the same problem.


I attached the wrong debug file. Here's the correct version.

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