diff --git a/args.go b/args.go
index a842f65..4535901 100644
--- a/args.go
+++ b/args.go
@@ -7,12 +7,14 @@ import (
 	"github.com/pborman/getopt"
 )
 
+var verboseLog bool
 var connectAddress string
 var serialTCPPort uint16
 var enableSerialDevice bool
 
 func parseArgs() {
 	h := getopt.BoolLong("help", 'h', "display help")
+	v := getopt.BoolLong("verbose", 'v', "Enable verbose (debug) logging")
 	a := getopt.StringLong("address", 'a', "IC-705", "Connect to address")
 	t := getopt.Uint16Long("serial-tcp-port", 'p', 4533, "Expose radio's serial port on this TCP port")
 	s := getopt.BoolLong("enable-serial-device", 's', "Expose radio's serial port as a virtual serial port")
@@ -25,6 +27,7 @@ func parseArgs() {
 		os.Exit(1)
 	}
 
+	verboseLog = *v
 	connectAddress = *a
 	serialTCPPort = *t
 	enableSerialDevice = *s
diff --git a/audio-linux.go b/audio-linux.go
index ca46de1..f6256ee 100644
--- a/audio-linux.go
+++ b/audio-linux.go
@@ -9,7 +9,6 @@ import (
 	"sync"
 
 	"github.com/akosmarton/papipes"
-	"github.com/nonoo/kappanhang/log"
 )
 
 type audioStruct struct {
diff --git a/audiostream.go b/audiostream.go
index cb5943c..71db60e 100644
--- a/audiostream.go
+++ b/audiostream.go
@@ -5,8 +5,6 @@ import (
 	"encoding/binary"
 	"errors"
 	"time"
-
-	"github.com/nonoo/kappanhang/log"
 )
 
 const audioTimeoutDuration = 3 * time.Second
diff --git a/controlstream.go b/controlstream.go
index aef6087..23c715c 100644
--- a/controlstream.go
+++ b/controlstream.go
@@ -6,8 +6,6 @@ import (
 	"errors"
 	"strings"
 	"time"
-
-	"github.com/nonoo/kappanhang/log"
 )
 
 type controlStream struct {
diff --git a/log.go b/log.go
new file mode 100644
index 0000000..8dd19b9
--- /dev/null
+++ b/log.go
@@ -0,0 +1,86 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"path/filepath"
+	"runtime"
+
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+)
+
+type logger struct {
+	logger            *zap.SugaredLogger
+	filenameTrimChars int
+}
+
+var log logger
+
+func (l *logger) GetCallerFileName(withLine bool) string {
+	_, filename, line, _ := runtime.Caller(2)
+	extension := filepath.Ext(filename)
+	if withLine {
+		return fmt.Sprint(filename[l.filenameTrimChars:len(filename)-len(extension)], "@", line)
+	} else {
+		return filename[l.filenameTrimChars : len(filename)-len(extension)]
+	}
+}
+
+func (l *logger) Printf(a string, b ...interface{}) {
+	l.logger.Infof(l.GetCallerFileName(false)+": "+a, b...)
+}
+
+func (l *logger) Print(a ...interface{}) {
+	l.logger.Info(append([]interface{}{l.GetCallerFileName(false) + ": "}, a...)...)
+}
+
+func (l *logger) Debugf(a string, b ...interface{}) {
+	l.logger.Debugf(l.GetCallerFileName(true)+": "+a, b...)
+}
+
+func (l *logger) Debug(a ...interface{}) {
+	l.logger.Debug(append([]interface{}{l.GetCallerFileName(true) + ": "}, a...)...)
+}
+
+func (l *logger) Errorf(a string, b ...interface{}) {
+	l.logger.Errorf(l.GetCallerFileName(true)+": "+a, b...)
+}
+
+func (l *logger) Error(a ...interface{}) {
+	l.logger.Error(append([]interface{}{l.GetCallerFileName(true) + ": "}, a...)...)
+}
+
+func (l *logger) ErrorC(a ...interface{}) {
+	l.logger.Error(a...)
+}
+
+func (l *logger) Fatalf(a string, b ...interface{}) {
+	l.logger.Fatalf(l.GetCallerFileName(true)+": "+a, b...)
+}
+
+func (l *logger) Fatal(a ...interface{}) {
+	l.logger.Fatal(append([]interface{}{l.GetCallerFileName(true) + ": "}, a...)...)
+}
+
+func (l *logger) Init() {
+	// Example: https://stackoverflow.com/questions/50933936/zap-logger-does-not-print-on-console-rather-print-in-the-log-file/50936341
+	pe := zap.NewProductionEncoderConfig()
+	pe.EncodeTime = zapcore.ISO8601TimeEncoder
+	// pe.LevelKey = ""
+	consoleEncoder := zapcore.NewConsoleEncoder(pe)
+
+	var level zapcore.Level
+	if verboseLog {
+		level = zap.DebugLevel
+	} else {
+		level = zap.InfoLevel
+	}
+
+	core := zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), level)
+	l.logger = zap.New(core).Sugar()
+
+	var callerFilename string
+	_, callerFilename, _, _ = runtime.Caller(1)
+	l.filenameTrimChars = len(filepath.Dir(callerFilename)) + 1
+}
diff --git a/log/log.go b/log/log.go
deleted file mode 100644
index bc9a8f7..0000000
--- a/log/log.go
+++ /dev/null
@@ -1,77 +0,0 @@
-package log
-
-import (
-	"fmt"
-	"os"
-	"path/filepath"
-	"runtime"
-
-	"go.uber.org/zap"
-	"go.uber.org/zap/zapcore"
-)
-
-var logger *zap.SugaredLogger
-var filenameTrimChars int
-
-func GetCallerFileName(withLine bool) string {
-	_, filename, line, _ := runtime.Caller(2)
-	extension := filepath.Ext(filename)
-	if withLine {
-		return fmt.Sprint(filename[filenameTrimChars:len(filename)-len(extension)], "@", line)
-	} else {
-		return filename[filenameTrimChars : len(filename)-len(extension)]
-	}
-}
-
-func Printf(a string, b ...interface{}) {
-	logger.Infof(GetCallerFileName(false)+": "+a, b...)
-}
-
-func Print(a ...interface{}) {
-	logger.Info(append([]interface{}{GetCallerFileName(false) + ": "}, a...)...)
-}
-
-func Debugf(a string, b ...interface{}) {
-	logger.Debugf(GetCallerFileName(true)+": "+a, b...)
-}
-
-func Debug(a ...interface{}) {
-	logger.Debug(append([]interface{}{GetCallerFileName(true) + ": "}, a...)...)
-}
-
-func Errorf(a string, b ...interface{}) {
-	logger.Errorf(GetCallerFileName(true)+": "+a, b...)
-}
-
-func Error(a ...interface{}) {
-	logger.Error(append([]interface{}{GetCallerFileName(true) + ": "}, a...)...)
-}
-
-func ErrorC(a ...interface{}) {
-	logger.Error(a...)
-}
-
-func Fatalf(a string, b ...interface{}) {
-	logger.Fatalf(GetCallerFileName(true)+": "+a, b...)
-}
-
-func Fatal(a ...interface{}) {
-	logger.Fatal(append([]interface{}{GetCallerFileName(true) + ": "}, a...)...)
-}
-
-func Init() {
-	// Example: https://stackoverflow.com/questions/50933936/zap-logger-does-not-print-on-console-rather-print-in-the-log-file/50936341
-	pe := zap.NewProductionEncoderConfig()
-	pe.EncodeTime = zapcore.ISO8601TimeEncoder
-	// pe.LevelKey = ""
-	consoleEncoder := zapcore.NewConsoleEncoder(pe)
-
-	level := zap.DebugLevel
-
-	core := zapcore.NewCore(consoleEncoder, zapcore.AddSync(os.Stdout), level)
-	logger = zap.New(core).Sugar()
-
-	var callerFilename string
-	_, callerFilename, _, _ = runtime.Caller(1)
-	filenameTrimChars = len(filepath.Dir(callerFilename)) + 1
-}
diff --git a/main.go b/main.go
index f5a6d24..f8cad5f 100644
--- a/main.go
+++ b/main.go
@@ -6,8 +6,6 @@ import (
 	"strings"
 	"syscall"
 	"time"
-
-	"github.com/nonoo/kappanhang/log"
 )
 
 var gotErrChan = make(chan bool)
diff --git a/pkt0.go b/pkt0.go
index 5e18bbc..2441d45 100644
--- a/pkt0.go
+++ b/pkt0.go
@@ -6,8 +6,6 @@ import (
 	"math"
 	"sync"
 	"time"
-
-	"github.com/nonoo/kappanhang/log"
 )
 
 type pkt0Type struct {
diff --git a/seqbuf.go b/seqbuf.go
index 37b485c..fe98e87 100644
--- a/seqbuf.go
+++ b/seqbuf.go
@@ -4,8 +4,6 @@ import (
 	"errors"
 	"sync"
 	"time"
-
-	"github.com/nonoo/kappanhang/log"
 )
 
 type seqNum int
diff --git a/serial-linux.go b/serial-linux.go
index bbf5fe3..63d16d9 100644
--- a/serial-linux.go
+++ b/serial-linux.go
@@ -6,7 +6,6 @@ import (
 	"os"
 
 	"github.com/google/goterm/term"
-	"github.com/nonoo/kappanhang/log"
 )
 
 type serialPortStruct struct {
diff --git a/serialstream.go b/serialstream.go
index 10734e3..f352dce 100644
--- a/serialstream.go
+++ b/serialstream.go
@@ -4,8 +4,6 @@ import (
 	"bytes"
 	"encoding/binary"
 	"time"
-
-	"github.com/nonoo/kappanhang/log"
 )
 
 const maxSerialFrameLength = 80 // Max. frame length according to Hamlib.
diff --git a/serialtcpsrv.go b/serialtcpsrv.go
index cde5d66..2d2930d 100644
--- a/serialtcpsrv.go
+++ b/serialtcpsrv.go
@@ -4,8 +4,6 @@ import (
 	"fmt"
 	"io"
 	"net"
-
-	"github.com/nonoo/kappanhang/log"
 )
 
 type serialTCPSrv struct {
diff --git a/streamcommon.go b/streamcommon.go
index 6dd60cb..9be2c40 100644
--- a/streamcommon.go
+++ b/streamcommon.go
@@ -7,8 +7,6 @@ import (
 	"fmt"
 	"net"
 	"time"
-
-	"github.com/nonoo/kappanhang/log"
 )
 
 const expectTimeoutDuration = time.Second