Read RS232 data on arduino

I am using an radar which is based on rs232 output data. I use MAX232 to TTL convertor with arduino. Radar givs data in 14 byte in hex i want to read it on serial monitor. what can i do ,Below i use sofwareserial.h library to read data but failed

#include <SoftwareSerial.h>

const int TX_PIN = 3; // Replace with your actual TX pin
SoftwareSerial mySerial(RX_PIN, TX_PIN);

void setup() {
 Serial.begin(115200);      // Serial monitor for debugging
 mySerial.begin(115200);    // SoftwareSerial for connecting to the MAX232
}

void loop() {
 // Check for and print the raw data from the radar
 printRawRadarData();
}

void printRawRadarData() {
 // Check if data is available from the MAX232
 while (mySerial.available()) {
   char receivedChar = mySerial.read();
   Serial.print(receivedChar,HEX);
 }
}

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