Can't upload code to transceiver

Hey so I have a arduino that was adapted by t-mins for cansat competition, and I also have 2 transceivers. Arduino is working fine, but when I connect the transceivers to the pc and try to write some code just to check if it's transmitting something I get this error:

Binary sketch size: 3.430 bytes (of a 258.048 byte maximum)
D:\Program Files (x86)\Arduino\hardware/tools/avr/bin/avrdude -CD:\Program Files (x86)\Arduino\hardware/tools/avr/etc/avrdude.conf -v -v -v -v -patmega2560 -cwiring -P\.\COM10 -b57600 -D -Uflash:w:C:\Users\rui\AppData\Local\Temp\build5274713918310974921.tmp\sketch_may03a.cpp.hex:i

avrdude: Version 5.11, compiled on Sep  2 2011 at 19:38:36
         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/
         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "D:\Program Files (x86)\Arduino\hardware/tools/avr/etc/avrdude.conf"

         Using Port                    : \\.\COM10
         Using Programmer              : wiring
         Overriding Baud Rate          : 57600
avrdude: wiring_open(): releasing DTR/RTS
avrdude: wiring_open(): asserting DTR/RTS
avrdude: Send: . [1b] . [01] . [00] . [01] . [0e] . [01] . [14] 
avrdude: Recv: . [1b] 
avrdude: Recv: . [01] 
avrdude: Recv: . [00] 
avrdude: Recv: . [01] 
avrdude: Recv: . [0e] 
avrdude: Recv: . [01] 
avrdude: Recv: . [14] 
avrdude: Send: . [1b] . [02] . [00] . [01] . [0e] . [01] . [17] 
avrdude: Recv: . [1b] 
avrdude: Recv: . [02] 
avrdude: Recv: . [00] 
avrdude: Recv: . [01] 
avrdude: Recv: . [0e] 
avrdude: Recv: . [01] 
avrdude: Recv: . [17] 
avrdude: Send: . [1b] . [03] . [00] . [01] . [0e] . [01] . [16] 
avrdude: Recv: . [1b] 
avrdude: Recv: . [03] 
avrdude: Recv: . [00] 
avrdude: Recv: . [01] 
avrdude: Recv: . [0e] 
avrdude: Recv: . [01] 
avrdude: Recv: . [16] 
avrdude: Send: . [1b] . [04] . [00] . [01] . [0e] . [01] . [11] 
avrdude: Recv: . [1b] 
avrdude: Recv: . [04] 
avrdude: Recv: . [00] 
avrdude: Recv: . [01] 
avrdude: Recv: . [0e] 
avrdude: Recv: . [01] 
avrdude: Recv: . [11] 
avrdude: Send: . [1b] . [05] . [00] . [01] . [0e] . [01] . [10] 
avrdude: Recv: . [1b] 
avrdude: Recv: . [05] 
avrdude: Recv: . [00] 
avrdude: Recv: . [01] 
avrdude: Recv: . [0e] 
avrdude: Recv: . [01] 
avrdude: Recv: . [10] 
avrdude: Send: . [1b] . [06] . [00] . [01] . [0e] . [01] . [13] 
avrdude: Recv: . [1b] 
avrdude: Recv: . [06] 
avrdude: Recv: . [00] 
avrdude: Recv: . [01] 
avrdude: Recv: . [0e] 
avrdude: Recv: . [01] 
avrdude: Recv: . [13] 
avrdude: stk500v2_getsync(): can't communicate with device: resp=0x01

avrdude done.  Thank you.

The code I try to use:

void setup(){
  Serial.begin(19200);
}

void loop() {
  Serial.println("X");
}

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