--- a/autocal/Makefile	Sat Jul 15 19:22:30 2017 +0000
+++ b/autocal/Makefile	Sat Jul 15 20:08:55 2017 +0000
@@ -11,7 +11,7 @@
 		rxupload.o sockopts.o tsidsock.o
 
 TXBAND_OBJS=	l1tmops.o rvinterf.o sockopts.o tsidsock.o txbandmain.o \
-		txpwrmeas.o
+		txcalconf.o txpwrmeas.o
 
 TXBASIS_OBJS=	l1tmops.o rvinterf.o tsidsock.o txpwrmeas.o txstandbas.o
 

--- a/autocal/txbandmain.c	Sat Jul 15 19:22:30 2017 +0000
+++ b/autocal/txbandmain.c	Sat Jul 15 20:08:55 2017 +0000
@@ -100,6 +100,7 @@
 {
 	socket_pathname_options(argc, argv);
 	finish_cmdline(argc, argv);
+	read_tx_cal_profile();
 	connect_rvinterf_socket();
 	connect_tsid_socket();
 	setlinebuf(stdout);	/* to allow logging with tee */

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/autocal/txcalconf.c	Sat Jul 15 20:08:55 2017 +0000
@@ -0,0 +1,146 @@
+/*
+ * The code that reads and parses Tx calibration profiles lives here.
+ */
+
+#include <sys/param.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <strings.h>
+#include <rvinterf/exitcodes.h>
+#include "txband.h"
+
+char txlevels_directory[] = "/opt/freecalypso/rfcal/txlevels";
+
+extern struct txcal_band *txcal_band;
+extern char *txlevels_profile;
+
+extern struct tx_basis_point tx_basis[MAX_BASIS_POINTS];
+extern unsigned num_basis_points;
+
+extern struct tx_level tx_levels[MAX_TX_LEVELS];
+
+static basis_set, targets_set;
+
+static void
+do_basis_line(cp, filename_for_errs, lineno)
+	char *cp, *filename_for_errs;
+{
+	unsigned n;
+
+	for (n = 0; ; n++) {
+		while (isspace(*cp))
+			cp++;
+		if (*cp == '\0' || *cp == '#')
+			break;
+		if (!isdigit(*cp)) {
+			fprintf(stderr,
+				"%s line %d: non-numeric content not allowed\n",
+				filename_for_errs, lineno);
+			exit(ERROR_USAGE);
+		}
+		if (n >= MAX_BASIS_POINTS) {
+			fprintf(stderr,
+				"%s line %d: MAX_BASIS_POINTS exceeded\n",
+				filename_for_errs, lineno);
+			exit(ERROR_USAGE);
+		}
+		tx_basis[n].apc = atoi(cp);
+		while (isdigit(*cp))
+			cp++;
+	}
+	if (n < 2) {
+		fprintf(stderr,
+		"%s line %d: a minimum of 2 basis points must be given\n",
+			filename_for_errs, lineno);
+		exit(ERROR_USAGE);
+	}
+	num_basis_points = n;
+	basis_set = 1;
+}
+
+static void
+do_targets_line(cp, filename_for_errs, lineno)
+	char *cp, *filename_for_errs;
+{
+	unsigned expect_num, n;
+
+	expect_num = txcal_band->end_plnum - txcal_band->start_plnum + 1;
+	for (n = 0; ; n++) {
+		while (isspace(*cp))
+			cp++;
+		if (*cp == '\0' || *cp == '#')
+			break;
+		if (!isdigit(*cp)) {
+			fprintf(stderr,
+				"%s line %d: non-numeric content not allowed\n",
+				filename_for_errs, lineno);
+			exit(ERROR_USAGE);
+		}
+		if (n >= expect_num) {
+wrong_num:		fprintf(stderr,
+			"%s line %d: exactly %u target numbers expected\n",
+				filename_for_errs, lineno, expect_num);
+			exit(ERROR_USAGE);
+		}
+		tx_levels[txcal_band->start_plnum + n].target = atof(cp);
+		while (isdigit(*cp) || *cp == '.')
+			cp++;
+	}
+	if (n != expect_num)
+		goto wrong_num;
+	targets_set = 1;
+}
+
+static void
+process_line(linebuf, filename_for_errs, lineno)
+	char *linebuf, *filename_for_errs;
+{
+	char *cp, *np;
+
+	for (cp = linebuf; isspace(*cp); cp++)
+		;
+	if (*cp == '\0' || *cp == '#')
+		return;
+	for (np = cp; *cp && !isspace(*cp); cp++)
+		;
+	if (*cp)
+		*cp++ = '\0';
+	if (!strcmp(np, "basis"))
+		do_basis_line(cp, filename_for_errs, lineno);
+	else if (!strcmp(np, "targets"))
+		do_targets_line(cp, filename_for_errs, lineno);
+	else {
+		fprintf(stderr, "%s line %d: unknown keyword \"%s\"\n",
+			filename_for_errs, lineno, np);
+		exit(ERROR_USAGE);
+	}
+}
+
+read_tx_cal_profile()
+{
+	char pathname[MAXPATHLEN];
+	FILE *inf;
+	int lineno;
+	char linebuf[512];
+
+	sprintf(pathname, "%s/%s-%s", txlevels_directory, txlevels_profile,
+		txcal_band->name);
+	inf = fopen(pathname, "r");
+	if (!inf) {
+		perror(pathname);
+		exit(ERROR_USAGE);
+	}
+	for (lineno = 1; fgets(linebuf, sizeof linebuf, inf); lineno++)
+		process_line(linebuf, pathname, lineno);
+	fclose(inf);
+	if (!basis_set) {
+		fprintf(stderr, "error: basis not set in %s\n", pathname);
+		exit(ERROR_USAGE);
+	}
+	if (!targets_set) {
+		fprintf(stderr, "error: targets not set in %s\n", pathname);
+		exit(ERROR_USAGE);
+	}
+}