Index: head/comms/Makefile
===================================================================
--- head/comms/Makefile
+++ head/comms/Makefile
@@ -153,6 +153,7 @@
     SUBDIR += qt5-serialport
     SUBDIR += qtel
     SUBDIR += quisk
+    SUBDIR += redsea
     SUBDIR += remserial
     SUBDIR += rtl-sdr
     SUBDIR += rubygem-callsign
Index: head/comms/redsea/Makefile
===================================================================
--- head/comms/redsea/Makefile
+++ head/comms/redsea/Makefile
@@ -0,0 +1,36 @@
+# $FreeBSD$
+
+PORTNAME=	redsea
+DISTVERSIONPREFIX=	v
+DISTVERSION=	0.17.1
+CATEGORIES=	comms
+
+MAINTAINER=	morrand276@gmail.com
+COMMENT=	Lightweight command-line FM-RDS decoder
+
+LICENSE=	MIT
+LICENSE_FILE=	${WRKSRC}/LICENSE
+
+LIB_DEPENDS=	libsndfile.so:audio/libsndfile
+
+USES=	autoreconf:build compiler:c++14-lang iconv localbase:ldflags
+USE_GITHUB=	yes
+GH_ACCOUNT=	windytan
+
+GNU_CONFIGURE=	yes
+PLIST_FILES=	bin/redsea ${DOCSDIR}/README.md
+
+OPTIONS_DEFINE=		DEMOD TMC
+OPTIONS_DEFAULT=	DEMOD TMC
+
+DEMOD_DESC=	Demodulation support via comms/liquid-dsp
+TMC_DESC=	TMC (traffic messages) support (may slow building)
+
+DEMOD_CONFIGURE_WITH=	liquid
+DEMOD_LIB_DEPENDS=	libliquid.so:comms/liquid-dsp
+TMC_CONFIGURE_ENABLE=	tmc
+
+pre-configure:
+	@cd ${WRKSRC} && ${AUTORECONF} -i
+
+.include <bsd.port.mk>
Index: head/comms/redsea/distinfo
===================================================================
--- head/comms/redsea/distinfo
+++ head/comms/redsea/distinfo
@@ -0,0 +1,3 @@
+TIMESTAMP = 1546699406
+SHA256 (windytan-redsea-v0.17.1_GH0.tar.gz) = 15fc9f2c733ce0b68b27301df071b20846ad30ac5670599a9344d63bd7d0afbd
+SIZE (windytan-redsea-v0.17.1_GH0.tar.gz) = 119115
Index: head/comms/redsea/pkg-descr
===================================================================
--- head/comms/redsea/pkg-descr
+++ head/comms/redsea/pkg-descr
@@ -0,0 +1,11 @@
+redsea is a lightweight command-line decoder for broadcast FM-RDS data,
+such as that provided from a software-defined radio (SDR). It can also
+decode raw ASCII bitstreams, the hex format provided by RDS Spy, and audio
+files containing multiplex signals. Decoded RDS groups are printed to the
+terminal as line-delimited JSON objects; optionally, undecoded hex blocks
+can be output instead.
+
+This program is intended to be used in combination with a separate source
+of demodulated FM multiplex signals, such as rtl-sdr.
+
+WWW: https://github.com/windytan/redsea/
Index: head/comms/redsea/pkg-message
===================================================================
--- head/comms/redsea/pkg-message
+++ head/comms/redsea/pkg-message
@@ -0,0 +1,10 @@
+Don't forget to give redsea something to decode!  For output from a USB 
+software-defined radio stick, you may want to consider installing 
+comms/rtl-sdr or another SDR tool of your choice that can feed raw I/Q 
+data on stdout.  
+
+You can also provide redsea with hex data from RDS Spy, raw ASCII 
+bitstream, or an audio file containing a multiplexed FM signal.
+
+Fuller details are contained in the redsea wiki:
+https://github.com/windytan/redsea/wiki/Input-formats