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wavelog/application/libraries/Frequency.php
int2001 950a8a506e if RX and TX are same (split) show only one QRG
2026-03-05 10:53:25 +00:00

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<?php if (!defined('BASEPATH')) exit('No direct script access allowed');
class Frequency {
public $defaultFrequencies = array(
'160m' => array(
'SSB' => "1900000",
'DATA' => "1838000",
'CW' => "1830000",
'NOMINAL' => "1.8",
'UNIT' => 'kHz'),
'80m' => array(
'SSB' => "3700000",
'DATA' => "3583000",
"CW" => "3550000",
"NOMINAL" => "3.5",
'UNIT' => 'kHz'),
'60m' => array(
'SSB' => "5330000",
'DATA' => "5330000",
"CW" => "5260000",
"NOMINAL" => "5",
'UNIT' => 'kHz'),
'40m' => array(
'SSB' => "7100000",
'DATA' => "7040000",
'CW' => "7020000",
'NOMINAL' => "7",
'UNIT' => 'kHz'),
'30m' => array(
'SSB' => "10120000",
'DATA' => "10145000",
'CW' => "10120000",
'NOMINAL' => "10",
'UNIT' => 'kHz'),
'20m' => array(
'SSB' => "14200000",
'DATA' => "14080000",
'CW' => "14020000",
'NOMINAL' => "14",
'UNIT' => 'kHz'),
'17m' => array(
'SSB' => "18130000",
'DATA' => "18105000",
'CW' => "18080000",
'NOMINAL' => "18",
'UNIT' => 'kHz'),
'15m' => array(
'SSB' => "21300000",
'DATA' => "21080000",
'CW' => "21020000",
'NOMINAL' => "21",
'UNIT' => 'kHz'),
'12m' => array(
'SSB' => "24950000",
'DATA' => "24925000",
'CW' => "24900000",
'NOMINAL' => "24",
'UNIT' => 'kHz'),
'10m' => array(
'SSB' => "28300000",
'DATA' => "28120000",
'CW' => "28050000",
'NOMINAL' => "28",
'UNIT' => 'kHz'),
'6m' => array(
'SSB' => "50150000",
'DATA' => "50230000",
'CW' => "50090000",
'NOMINAL' => "50",
'UNIT' => 'MHz'),
'4m' => array(
'SSB' => "70200000",
'DATA' => "70200000",
'CW' => "70200000",
'NOMINAL' => "70",
'UNIT' => 'MHz'),
'2m' => array(
'SSB' => "144300000",
'DATA' => "144370000",
'CW' => "144050000",
'NOMINAL' => "144",
'UNIT' => 'MHz'),
'1.25m' => array(
'SSB' => "222100000",
'DATA' => "222100000",
'CW' => "222100000",
'NOMINAL' => "222",
'UNIT' => 'MHz'),
'70cm' => array(
'SSB' => "432200000",
'DATA' => "432088000",
'CW' => "432050000",
'NOMINAL' => "433",
'UNIT' => 'MHz'),
'33cm' => array(
'SSB' => "902100000",
'DATA' => "902100000",
'CW' => "902100000",
'NOMINAL' => "902",
'UNIT' => 'MHz'),
'23cm' => array(
'SSB' => "1296000000",
'DATA' => "1296138000",
'CW' => "129600000",
'NOMINAL' => "1296",
'UNIT' => 'GHz'),
'13cm' => array(
'SSB' => "2320800000",
'DATA' => "2320800000",
'CW' => "2320800000",
'NOMINAL' => "2400",
'UNIT' => 'GHz'),
'9cm' => array(
'SSB' => "3410000000",
'DATA' => "3410000000",
'CW' => "3400000000",
'NOMINAL' => "3400",
'UNIT' => 'GHz'),
'6cm' => array(
'SSB' => "5670000000",
'DATA' => "5670000000",
'CW' => "5670000000",
'NOMINAL' => "5670",
'UNIT' => 'GHz'),
'3cm' => array(
'SSB' => "10225000000",
'DATA' => "10225000000",
'CW' => "10225000000",
'NOMINAL' => "10225",
'UNIT' => 'GHz'),
'1.25cm' => array(
'SSB' => "24000000000",
'DATA' => "24000000000",
'CW' => "24000000000",
'NOMINAL' => "24000",
'UNIT' => 'GHz'),
);
/* Class to convert band and mode into a frequency in a format based on the specifications of the database table */
public function convert_band($band, $mode = 'SSB') {
// Converting LSB and USB to SSB
if ($mode == 'LSB' or $mode == 'USB') {
$mode = "SSB";
}
// Use 'DATA' for any of the data modes
if ($mode != 'CW' and $mode != 'SSB') {
$mode = "DATA";
}
return $this->getDefaultFrequency($band, $mode);
}
function getDefaultFrequency($band, $mode) {
$CI = &get_instance();
$db = &$CI->db;
$db->from('bands');
$db->where('bands.band', $band);
$result = $db->get()->row();
$mode = strtolower($mode);
return $result->$mode;
}
public function GetBand($Frequency) {
$Band = NULL;
if ($Frequency > 1000000 && $Frequency < 2000000) {
$Band = "160m";
} else if ($Frequency > 3000000 && $Frequency < 4000000) {
$Band = "80m";
} else if ($Frequency >= 5330000 && $Frequency < 5405000) {
$Band = "60m";
} else if ($Frequency > 6000000 && $Frequency < 8000000) {
$Band = "40m";
} else if ($Frequency > 9000000 && $Frequency < 11000000) {
$Band = "30m";
} else if ($Frequency > 13000000 && $Frequency < 15000000) {
$Band = "20m";
} else if ($Frequency > 17000000 && $Frequency < 19000000) {
$Band = "17m";
} else if ($Frequency > 20000000 && $Frequency < 22000000) {
$Band = "15m";
} else if ($Frequency > 23000000 && $Frequency < 25000000) {
$Band = "12m";
} else if ($Frequency > 27000000 && $Frequency < 30000000) {
$Band = "10m";
} else if ($Frequency > 49000000 && $Frequency < 55000000) {
$Band = "6m";
} else if ($Frequency > 69000000 && $Frequency < 71000000) {
$Band = "4m";
} else if ($Frequency > 140000000 && $Frequency < 150000000) {
$Band = "2m";
} else if ($Frequency > 218000000 && $Frequency < 226000000) {
$Band = "1.25m";
} else if ($Frequency >= 420000000 && $Frequency < 450000000) {
$Band = "70cm";
} else if ($Frequency > 900000000 && $Frequency < 930000000) {
$Band = "33cm";
} else if ($Frequency > 1200000000 && $Frequency < 1300000000) {
$Band = "23cm";
} else if ($Frequency > 2200000000 && $Frequency < 2600000000) {
$Band = "13cm";
} else if ($Frequency > 3000000000 && $Frequency < 4000000000) {
$Band = "9cm";
} else if ($Frequency > 5000000000 && $Frequency < 6000000000) {
$Band = "6cm";
} else if ($Frequency > 9000000000 && $Frequency < 11000000000) {
$Band = "3cm";
} else if ($Frequency > 23000000000 && $Frequency < 25000000000) {
$Band = "1.2cm";
} else if ($Frequency > 46000000000 && $Frequency < 55000000000) {
$Band = "6mm";
} else if ($Frequency > 75000000000 && $Frequency < 82000000000) {
$Band = "4mm";
} else if ($Frequency > 120000000000 && $Frequency < 125000000000) {
$Band = "2.5mm";
} else if ($Frequency > 133000000000 && $Frequency < 150000000000) {
$Band = "2mm";
} else if ($Frequency > 240000000000 && $Frequency < 250000000000) {
$Band = "1mm";
} else if ($Frequency >= 250000000000) {
$Band = "<1mm";
}
return $Band;
}
/**
* Convert a frequency to a specified unit and return it in a specified format.
*
* @param float $frequency The frequency value to be converted.
*
* @param int $r_option (Optional) The result format option.
* 0: Return as a string with just the frequency.
* 1 (default): Return as a string with frequency and unit.
* 2: Return as a string with frequency, unit, and band.
*
* @param string $source_unit (Optional) The source unit of the frequency.
* Possible values: 'Hz', 'kHz', 'MHz', 'GHz'.
* Default is 'Hz'.
* ! If the source unit is not 'Hz', you have to provide the source unit. !
*
* @param string $target_unit (Optional) The target unit for conversion.
* Possible values: 'Hz', 'kHz', 'MHz', 'GHz'.
* If not provided, the unit is determined based on session data (function qrg_unit()).
*
* @return string The converted frequency in the specified format.
*
* To change the number of decimals shown per unit, add in your config.php
*
* $config['qrg_hz_dec'] = 0;
* $config['qrg_khz_dec'] = 0;
* $config['qrg_mhz_dec'] = 3;
* $config['qrg_ghz_dec'] = 3;
*
* and adjust the values to your needs.
*
*/
function qrg_conversion($frequency, $r_option = 1, $source_unit = 'Hz', $target_unit = NULL) {
if ($frequency == 0) {
return null;
}
$CI = &get_instance();
// Get the band
$band = $this->GetBand($frequency);
// Get the target unit
if ($target_unit === NULL) {
$target_unit = $this->qrg_unit($band);
}
// Convert the frequency to Hz
switch ($source_unit) {
case 'Hz':
break;
case 'kHz':
$frequency *= 1000;
break;
case 'MHz':
$frequency *= 1000000; // 1000 * 1000
break;
case 'GHz':
$frequency *= 1000000000; // 1000 * 1000 * 1000
break;
}
// Convert the frequency to the target unit
switch ($target_unit) {
case 'Hz':
$decimals = $CI->config->item('qrg_hz_dec') ?? 0;
break;
case 'kHz':
$frequency /= 1000;
$decimals = $CI->config->item('qrg_khz_dec') ?? 0;
break;
case 'MHz':
$frequency /= 1000000; // 1000 * 1000
$decimals = $CI->config->item('qrg_mhz_dec') ?? 3;
break;
case 'GHz':
$frequency /= 1000000000; // 1000 * 1000 * 1000
$decimals = $CI->config->item('qrg_ghz_dec') ?? 3;
break;
}
// Return
switch ($r_option) {
case 0:
return number_format($frequency, $decimals, '.', '');
break;
case 1:
return number_format($frequency, $decimals, '.', '') . ' ' . $target_unit;
break;
case 2:
return number_format($frequency, $decimals, '.', '') . ' ' . $target_unit . ' (' . $band . ')';
break;
}
}
function qrg_unit($band) {
$CI = &get_instance();
if ($CI->session->userdata('qrgunit_'.$band)) {
$unit = $CI->session->userdata('qrgunit_'.$band);
} else {
if (isset($this->defaultFrequencies[$band]['UNIT'])) {
$unit = $this->defaultFrequencies[$band]['UNIT'];
} else {
$unit = 'kHz'; // we use kHz as fallback unit
}
}
return $unit;
}
/**
* Check if two frequencies are equal (handles different formats and empty values)
*
* @param mixed $freq1 First frequency (TX)
* @param mixed $freq2 Second frequency (RX)
* @return bool True if frequencies are equal or if one is empty/zero
*/
function frequencies_are_equal($freq1, $freq2) {
// Treat empty, null, or zero as "not set"
if (empty($freq1) || $freq1 === '0' || $freq1 === 0) {
return true;
}
if (empty($freq2) || $freq2 === '0' || $freq2 === 0) {
return true;
}
// Compare as floats to handle different string representations
return (float)$freq1 === (float)$freq2;
}
}
/* End of file Frequency.php */
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