diff --git a/imet/imet.c b/imet/imet.c
deleted file mode 100644
index 13017d3..0000000
--- a/imet/imet.c
+++ /dev/null
@@ -1,520 +0,0 @@
-
-/*
- * radiosonde iMet-1-AB (Trimble GPS)
- * author: zilog80
- * usage:
- *     gcc imet.c -o imet
- *     ./imet [options] audio.wav
- *       options:
- *               -r, --raw
- *               -i, --invert
- */
-
-#include <stdio.h>
-#include <string.h>
-
-#ifdef CYGWIN
-  #include <fcntl.h>  // cygwin: _setmode()
-  #include <io.h>
-#endif
-
-
-typedef unsigned char ui8_t;
-
-typedef struct {
-    int frnr;
-    char id[9];
-    int week; int gpssec;
-    //int jahr; int monat; int tag;
-    int wday;
-    int std; int min; int sek;
-    double lat; double lon; double h;
-} gpx_t;
-
-gpx_t gpx;
-
-int option_verbose = 0,  // ausfuehrliche Anzeige
-    option_raw = 0,      // rohe Frames
-    option_color = 0,    // Farbe
-    option_inv = 0,      // invertiert Signal
-    wavloaded = 0;
-
-/* -------------------------------------------------------------------------- */
-
-#define BAUD_RATE  2400
-// iMet: AFSK Baudrate 2400
-/* 1200 Hz: out-in
-   2400 Hz: lang  ->  Baudrate
-   4800 Hz: kurz (2x)
-*/
-
-int sample_rate = 0, bits_sample = 0, channels = 0;
-float samples_per_bit = 0;
-
-int findstr(char *buff, char *str, int pos) {
-    int i;
-    for (i = 0; i < 4; i++) {
-        if (buff[(pos+i)%4] != str[i]) break;
-    }
-    return i;
-}
-
-int read_wav_header(FILE *fp) {
-    char txt[5] = "\0\0\0\0";
-    char buff[4];
-    int byte, p=0;
-    char fmt_[5] = "fmt ";
-    char data[5] = "data";
-
-    if (fread(txt, 1, 4, fp) < 4) return -1;
-    if (strncmp(txt, "RIFF", 4)) return -1;
-
-    // pos_WAVE = 8L
-    if (fread(txt, 1, 4, fp) < 4) return -1;
-    if (fread(txt, 1, 4, fp) < 4) return -1;
-    if (strncmp(txt, "WAVE", 4)) return -1;
-
-    // pos_fmt = 12L
-    for ( ; ; ) {
-        if ( (byte=fgetc(fp)) == EOF ) return -1;
-        buff[p % 4] = byte;
-        p++; if (p==4) p=0;
-        if (findstr(buff, fmt_, p) == 4) break;
-    }
-    
-    if (fread(buff, 1, 4, fp) < 4) return -1;
-    if (fread(buff, 1, 2, fp) < 2) return -1;
-    if (fread(buff, 1, 2, fp) < 2) return -1;
-    channels = buff[0] + (buff[1] << 8);
-    if (fread(buff, 1, 4, fp) < 4) return -1;
-    memcpy(&sample_rate, buff, 4);
-    if (fread(buff, 1, 4, fp) < 4) return -1;
-    if (fread(buff, 1, 2, fp) < 2) return -1;
-    byte = buff[0] + (buff[1] << 8);
-    if (fread(buff, 1, 2, fp) < 2) return -1;
-    bits_sample = buff[0] + (buff[1] << 8);
-
-    for ( ; ; ) {
-        if ( (byte=fgetc(fp)) == EOF ) return -1;
-        buff[p % 4] = byte;
-        p++; if (p==4) p=0;
-        if (findstr(buff, data, p) == 4) break;
-    }
-    if (fread(buff, 1, 4, fp) < 4) return -1;
-
-
-    fprintf(stderr, "sample_rate: %d\n", sample_rate);
-    fprintf(stderr, "bits       : %d\n", bits_sample);
-    fprintf(stderr, "channels   : %d\n", channels);
-
-    if ((bits_sample != 8) && (bits_sample != 16)) return -1;
-
-    samples_per_bit = sample_rate/(float)BAUD_RATE;
-
-    fprintf(stderr, "samples/bit: %.2f\n", samples_per_bit);
-
-    return 0;
-}
-
-
-#define EOF_INT  0x1000000
-
-int read_signed_sample(FILE *fp) {  // int = i32_t
-    int byte, i, ret;         //  EOF -> 0x1000000
-
-    for (i = 0; i < channels; i++) {
-                          // i = 0: links bzw. mono
-        byte = fgetc(fp);
-        if (byte == EOF) return EOF_INT;
-        if (i == 0) ret = byte;
-    
-        if (bits_sample == 16) {
-            byte = fgetc(fp);
-            if (byte == EOF) return EOF_INT;
-            if (i == 0) ret +=  byte << 8;
-        }
-
-    }
-
-    if (bits_sample ==  8) return ret-128;
-    if (bits_sample == 16) return (short)ret;
-
-    return ret;
-}
-
-
-int par=-1, par_alt=-1;
-unsigned long sample_count = 0;
-
-int read_afsk_bits(FILE *fp, int *len) {
-    int n, sample;
-    float l;
-    int start;
-
-    start = 0;
-    n = 0;
-    do{
-        sample = read_signed_sample(fp);
-        if (sample == EOF_INT) return EOF;
-        if (option_inv) sample = -sample;
-        sample_count++;
-        if (sample > 0 && !start) continue;
-        start = 1;
-        par_alt = par;
-        par =  (sample >= 0) ? 1 : -1;
-        n++;
-    } while (par*par_alt > 0);
-
-    do{
-        sample = read_signed_sample(fp);
-        if (sample == EOF_INT) return EOF;
-        if (option_inv) sample = -sample;
-        sample_count++;
-        par_alt = par;
-        par =  (sample >= 0) ? 1 : -1;
-        n++;
-    } while (par*par_alt > 0);
-
-    l = (float)n / (samples_per_bit/2.0);
-    *len = (int)(l+0.5); // round(l)
-
-    return 0;
-}
-
-int read_afsk_bits1(FILE *fp, int *len) {
-    int n; static int sample;
-    float l;
-
-    while (sample >= 0) {
-        sample = read_signed_sample(fp);
-        if (sample == EOF_INT) return EOF;
-        if (option_inv) sample = -sample;
-        sample_count++;     
-    }
-    n = 0;
-    while (sample < 0) {
-        n++;
-        par_alt = par;
-        par =  (sample >= 0) ? 1 : -1;
-        sample = read_signed_sample(fp);
-        if (sample == EOF_INT) return EOF;
-        if (option_inv) sample = -sample;
-        sample_count++;     
-    }
-    while (sample >= 0) {
-        n++;
-        par_alt = par;
-        par =  (sample >= 0) ? 1 : -1;
-        sample = read_signed_sample(fp);
-        if (sample == EOF_INT) return EOF;
-        if (option_inv) sample = -sample;
-        sample_count++;     
-    }
-
-    l = (float)n / (samples_per_bit/2.0);
-    *len = (int)(l+0.5); // round(l)
-
-    return 0;
-}
-
-/* -------------------------------------------------------------------------- */
-
-/*
-Beginn/Header:
-69 69 69 69 69 10
-Ende:
-96 96 96 96 96 96 96 96 96
-*/
-
-#define pos_RecordNo  0x08  // 2 byte
-#define pos_SondeID1  0x12  // 5 byte
-#define pos_SondeID2  0x2C  // 5 byte
-
-#define pos_GPSTOW  0x8A  // 4 byte
-#define pos_GPSlat  0x8E  // 4 byte
-#define pos_GPSlon  0x92  // 4 byte
-#define pos_GPSalt  0x96  // 4 byte
-
-#define FRAMELEN 204
-ui8_t frame[FRAMELEN+6];
-
-double B60B60 = 0xB60B60;  // 2^32/360 = 0xB60B60.xxx
-
-char weekday[7][3] = { "So", "Mo", "Di", "Mi", "Do", "Fr", "Sa"};
-
-int gpsTOW(int gpstime) {
-    int day;
-
-    gpx.gpssec = gpstime;
-    if (gpx.gpssec<0 || gpx.gpssec>7*24*60*60) return -1;  // 1 Woche = 604800 sek
-
-    day = gpstime / (24 * 3600);
-    gpstime %= (24*3600);
-
-    if ((day < 0) || (day > 6)) {
-        //gpx.wday = 0;
-        return -1;
-    }
-    gpx.wday = day;
-    gpx.std = gpstime / 3600;
-    gpx.min = (gpstime % 3600) / 60;
-    gpx.sek = gpstime % 60;
-
-    return 0;
-}
-
-int gpsLat(int lat) {
-    gpx.lat = lat / B60B60;
-    if (gpx.lat < -90  ||  gpx.lat > 90) return -1;
-    return 0;
-}
-
-int gpsLon(int lon) {
-    gpx.lon = lon / B60B60;
-    return 0;
-}
-
-int gpsAlt(int alt) {
-    gpx.h = alt / 1000.0;
-    if (gpx.h < -200  ||  gpx.h > 50000) return -1;
-    return 0;
-}
-
-int get_GPS() {
-    int i, tow, lat, lon, alt;
-    int err = 0;
-
-    tow = lat = lon = alt = 0;
-    for (i = 0; i < 4; i++) {
-        tow |= frame[pos_GPSTOW+i] << (8*i);
-        lat |= frame[pos_GPSlat+i] << (8*i);
-        lon |= frame[pos_GPSlon+i] << (8*i);
-        alt |= frame[pos_GPSalt+i] << (8*i);
-    }
-    err = 0;
-    err |= gpsTOW(tow);
-    err |= gpsLat(lat);
-    err |= gpsLon(lon);
-    err |= gpsAlt(alt);
-
-    return err;
-}
-
-int get_RecordNo() {
-    int i;
-    unsigned byte;
-    ui8_t frnr_bytes[2];
-    int frnr;
-
-    for (i = 0; i < 2; i++) {
-        byte = frame[pos_RecordNo + i];
-        frnr_bytes[i] = byte;
-    }
-
-    frnr = frnr_bytes[0] + (frnr_bytes[1] << 8);
-    gpx.frnr = frnr;
-
-    return 0;
-}
-
-int get_SondeID() {
-    int i;
-    unsigned byte;
-    ui8_t sondeid_bytes[8];
-    int IDlen = 5; // < 9
-
-    for (i = 0; i < IDlen; i++) {
-        byte = frame[pos_SondeID1 + i];
-        if ((byte < 0x20) || (byte > 0x7E)) return -1;
-        sondeid_bytes[i] = byte;
-    }
-
-    for (i = 0; i < IDlen; i++) {
-        gpx.id[i] = sondeid_bytes[i];
-    }
-
-    return 0;
-}
-
-/* -------------------------------------------------------------------------- */
-
-void print_gps(FILE *fp) {
-    fprintf(fp, "%s ",weekday[gpx.wday]);
-    fprintf(fp, "%02d:%02d:%02d ", gpx.std, gpx.min, gpx.sek);
-    fprintf(fp, " lat: %.6f ", gpx.lat);
-    fprintf(fp, " lon: %.6f ", gpx.lon);
-    fprintf(fp, " h: %.2f ", gpx.h);
-}
-
-
-int bits2byte(char *bits) {
-    int i, d = 1, byte = 0;
-
-    for (i = 0; i < 8; i++) {
-        if      (bits[i] == 1)  byte += d;
-        else if (bits[i] == 0)  byte += 0;
-        d <<= 1;
-    }
-    return byte & 0xFF;
-}
-
-
-#define ANSI_COLOR_CYAN    "\x1b[36m"
-#define ANSI_COLOR_RESET   "\x1b[0m"
-
-void print_frame(int len) {
-    int i;
-    int err = 0;
-
-    if (option_raw) {
-        for (i = 0; i < len; i++) {
-            if (option_color) {
-                if (i >= pos_GPSTOW  &&  i < pos_GPSalt+4) fprintf(stdout, ANSI_COLOR_CYAN);
-                else fprintf(stdout, ANSI_COLOR_RESET);
-            }
-            fprintf(stdout, "%02x ", frame[i]);
-        }
-        fprintf(stdout, "\n");
-    }
-    else {
-        err = 0;
-        err |= get_RecordNo();
-        err |= get_SondeID();
-        err |= get_GPS();
-        if (!err) {
-            fprintf(stdout, "[%5d] ", gpx.frnr);
-            fprintf(stdout, "(%s)  ", gpx.id);
-            print_gps(stdout);
-            fprintf(stdout, "\n");
-        }
-    }
-}
-
-int main(int argc, char **argv) {
-
-    FILE *fp;
-    char *fpname;
-    int  i, len;
-    char bitbuf[8];
-
-int bitl1 = 0,
-    bitl2 = 0,
-    bitl4 = 0,
-    bytepos = 0,
-    bitpos = 0,
-    head = 0,
-    inout = 0,
-    byteval = 0;
-
-#ifdef CYGWIN
-    _setmode(fileno(stdin), _O_BINARY);  // _setmode(_fileno(stdin), _O_BINARY);
-    setbuf(stdout, NULL);
-#endif
-
-    fpname = argv[0];
-    ++argv;
-    while ((*argv) && (!wavloaded)) {
-        if      ( (strcmp(*argv, "-h") == 0) || (strcmp(*argv, "--help") == 0) ) {
-            fprintf(stderr, "%s [options] audio.wav\n", fpname);
-            fprintf(stderr, "  options:\n");
-            fprintf(stderr, "       -r, --raw\n");
-            return 0;
-        }
-/*
-        else if ( (strcmp(*argv, "-v") == 0) || (strcmp(*argv, "--verbose") == 0) ) {
-            option_verbose = 1;
-        }
-        else if   (strcmp(*argv, "-vv") == 0) { option_verbose = 2; }
-*/
-        else if ( (strcmp(*argv, "-r") == 0) || (strcmp(*argv, "--raw") == 0) ) {
-            option_raw = 1;
-        }
-        else if ( (strcmp(*argv, "-c") == 0) || (strcmp(*argv, "--color") == 0) ) {
-            option_color = 1;
-        }
-        else if ( (strcmp(*argv, "-i") == 0) || (strcmp(*argv, "--invert") == 0) ) {
-            option_inv = 1;
-        }
-        else {
-            fp = fopen(*argv, "rb");
-            if (fp == NULL) {
-                fprintf(stderr, "%s konnte nicht geoeffnet werden\n", *argv);
-                return -1;
-            }
-            wavloaded = 1;
-        }
-        ++argv;
-    }
-    if (!wavloaded) fp = stdin;
-
-    i = read_wav_header(fp);
-    if (i) {
-        fclose(fp);
-        return -1;
-    }
-
-
-    bitl1 = 0;
-    bitl2 = 0;
-    bitl4 = 0;
-    bytepos = 0;
-    bitpos = 0;
-    head = 0;
-
-    while (!read_afsk_bits(fp, &len)) {
-
-        if (len == 0) continue;
-
-        if (len == 1) {
-            bitl1++;
-            if (bitl1 < 2) continue;
-        }
-        if (len == 2) bitl2++;
-        if (len == 4) { 
-            bitl4++;
-            inout = 1;
-            bitl1 = 0;
-            bitl2 = 0;
-        }
-
-        if (len > 0 && len < 3) {
-            bitl4 = 0;
-            inout = 0;
-            if (head > 0) { 
-                head = 0;
-                if (bytepos > pos_GPSalt+4) print_frame(FRAMELEN);
-                bitpos = 0;
-                bytepos = 0;
-                for (i=0; i<FRAMELEN; i++) frame[i] = 0;
-            }
-        }
-
-        if (bitl1 == 2) { bitl1 = 0; bitbuf[bitpos++] = 1; }
-        if (bitl2 == 1) { bitl2 = 0; bitbuf[bitpos++] = 0; }
-
-        if (bitpos > 7 || inout) {
-            if (bitpos > 2) {
-                if (bytepos < FRAMELEN) {
-                    byteval = bits2byte(bitbuf);
-                    if (byteval == 0x10  &&  frame[bytepos-1] == 0x10) frame[bytepos-1] = 0x10;
-                    else {                                          // woher die doppelte 0x10?
-                        frame[bytepos] = byteval & 0xFF;
-                        bytepos++;
-                    }
-                }
-                
-            }
-            bitpos = 0;
-        }
-
-        if (bitl4 > 2) { head = 1; }
-
-    }
-    printf("\n");
-
-
-    fclose(fp);
-
-    return 0;
-}
-