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Add documentation for atest -U (force upsampling rate for G3RUH)
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doismellburning committed Jun 10, 2025
commit 02b284c9168f2857ce4bd93a6f8dc6f61edfd577
5 changes: 5 additions & 0 deletions man/atest.1
Original file line number Diff line number Diff line change
Expand Up @@ -61,6 +61,11 @@ Force G3RUH modem regardless of data rate.
.BI "-D " "n"
Divide audio sample rate by n.

.TP
.BI "-U " "n"
Override automatic upsampling rate for G3RUH,
improving performance when sample rate to baud ratio is low.

.TP
.BI "-h "
Print frame contents as hexadecimal bytes.
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2 changes: 2 additions & 0 deletions src/atest.c
Original file line number Diff line number Diff line change
Expand Up @@ -987,6 +987,8 @@ static void usage (void) {
dw_printf (" -J 2400 bps QPSK compatible with MFJ-2400.\n");
dw_printf ("\n");
dw_printf (" -D n Divide audio sample rate by n.\n");
dw_printf (" -U n Override automatic upsampling rate for G3RUH,\n");
dw_printf (" improving performance when sample rate to baud ratio is low.\n");
dw_printf ("\n");
dw_printf (" -h Print frame contents as hexadecimal bytes.\n");
dw_printf ("\n");
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