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HackRF configured for correct output power, Rs=1000 Fs=40000 M9 (blog post 5) configuration

dr-ota
David Rowe 2021-10-27 07:18:12 +10:30
parent ca0812d28e
commit 4accacefcf
1 changed files with 12 additions and 11 deletions
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23
script/ping
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@ -9,7 +9,8 @@
# [X] test with Pi running frame_repeater OTC
TERM_ADDR=0x1
RS=10000
RS=1000
TONE1=1000
DATA_BITS_PER_FRAME=256
CODE=H_${DATA_BITS_PER_FRAME}_512_4
PIRIP_PATH=${PWD}/..
@ -19,9 +20,9 @@ PIDFILE2=/var/run/${NAME}2.pid
LOGFILE=/var/log/${NAME}.log
PATH=${PIRIP_PATH}/tx:${PIRIP_PATH}/librtlsdr/build_rtlsdr/src:${PATH}
PATH=${PIRIP_PATH}/codec2/build_linux/misc:${PIRIP_PATH}/codec2/build_linux/src:${PATH}
PAUSE="${PAUSE:-10}"
GAIN="${GAIN:-49}"
HACKRF_TX_GAIN="${HACKRF_TX_GAIN:-40}"
PAUSE="${PAUSE:-5}"
GAIN="${GAIN:-40}"
HACKRF_TX_GAIN="${HACKRF_TX_GAIN:-47}"
function tx_burst_hackrf {
num_bursts=$1
@ -29,27 +30,27 @@ function tx_burst_hackrf {
tmp=$(mktemp)
if [ -z ${verbose+x} ]; then
# quiet version
freedv_data_raw_tx --source 0x1 -c --testframes 3 --burst 1 --Fs 100000 --Rs ${RS} --tone1 ${RS} --shift ${RS} -a 30000 FSK_LDPC /dev/zero - 2>/dev/null | tlininterp - - 40 -d -f > ${tmp}
freedv_data_raw_tx --source 0x1 -c --testframes 3 --burst 1 --Fs 100000 --Rs ${RS} --tone1 ${TONE1} --shift ${RS} -a 30000 FSK_LDPC /dev/zero - 2>/dev/null | tlininterp - - 40 -d -f > ${tmp}
for (( i=1; i<=$num_bursts; i++ ))
do
printf "%d Tx burst %d from HackRF...\n" `date +%s` ${i} 1>&2
hackrf_transfer -t ${tmp} -s 4E6 -f 143.5E6 -x ${HACKRF_TX_GAIN} 2>/dev/null 1>/dev/null
hackrf_transfer -t ${tmp} -s 4E6 -f 143.5E6 -x ${HACKRF_TX_GAIN} -a 1 2>/dev/null 1>/dev/null
sleep $pause_between_bursts
done
else
# verbose version
freedv_data_raw_tx --source 0x1 -c --testframes 3 --burst 1 --Fs 100000 --Rs ${RS} --tone1 ${RS} --shift ${RS} -a 30000 FSK_LDPC /dev/zero - | tlininterp - - 40 -d -f > ${tmp}
freedv_data_raw_tx --source 0x1 -c --testframes 3 --burst 1 --Fs 100000 --Rs ${RS} --tone1 ${TONE1} --shift ${RS} -a 30000 FSK_LDPC /dev/zero - | tlininterp - - 40 -d -f > ${tmp}
for (( i=1; i<=$num_bursts; i++ ))
do
printf "%d Tx burst %d from HackRF...\n" `date +%s` ${i} 1>&2
hackrf_transfer -t ${tmp} -s 4E6 -f 143.5E6 -x ${HACKRF_TX_GAIN}
hackrf_transfer -t ${tmp} -s 4E6 -f 143.5E6 -x ${HACKRF_TX_GAIN} -a 1
sleep $pause_between_bursts
done
fi
}
function start_rx {
rtl_fsk -g ${GAIN} -f 144490000 - -a 200000 -r 10000 --code H_256_512_4 --mask 10000 -L $1 > /dev/null &
rtl_fsk -g ${GAIN} -f 144490000 - -a 40000 -r ${RS} --code H_256_512_4 -L $1 -u localhost > /dev/null &
echo $!>${PIDFILE2}
}
@ -99,9 +100,9 @@ case "$1" in
;;
start_carrier)
# Send carrier from HackRF at same Tx power as FSK signal, much easier to measure on a spec-an
fsk_get_test_bits - 60000 | fsk_mod -t -c -a 30000 2 40000 1000 1000 2000 - - | \
fsk_get_test_bits - 60000 | fsk_mod -t -c -a 60000 2 40000 1000 1000 2000 - - | \
tlininterp - - 100 -d -f | \
hackrf_transfer -t - -s 4E6 -f 143.5E6 -x ${HACKRF_TX_GAIN}
hackrf_transfer -t - -s 4E6 -f 143.5E6 -x ${HACKRF_TX_GAIN} -a 1
;;
stop)
stop_service