I think you found an error in gr_mkheader! In truth, it isn’t particularly well tested so I’m glad you are using it. I just pushed a commit to fix this to github. git pull the changes, rebuild, and try again. Let me know if it solves the issue for you.
PWG
Thank you once again Paul.
ls -la
drwx------ 1 Username Username 4096 Dec 1 13:40 .
drwx------ 1 Username Username 12288 Nov 30 16:21 ..
-rwx------ 1 Username Username 7683964928 Nov 20 18:23 Sample-408MHz
gr_mkheader -r 1.8e6 -t sc16 -f 408e6 -l 1920991232 Sample-408MHz
Now I have Sample-408MHz.hdr:
gr_read_file_metadata Sample-408MHz.hdr -D
HEADER 0
Version Number: 0
Sample Rate: 1800000.00 sps
Seconds: 0.000000
Item size: 4
Data Type: short (1)
.....
.....
....
etc.
Now when I do
gr_fileman Sample-408MHz Sample.cfile -o fc32
I get
sample_cnt_end=500000,final_index=1920991232
Empty Header, quitting.
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