diff --git a/tracker/code/main/main.cpp b/tracker/code/main/main.cpp
index c6e5afb..7fc2eac 100644
--- a/tracker/code/main/main.cpp
+++ b/tracker/code/main/main.cpp
@@ -219,7 +219,7 @@ int main1(int argc, char** argv)
 					GLOB::get().nmea_set(current_nmea);
 					GLOB::get().gps_fix_now(); // typical time since uBlox msg read to here is under 1 millisecond
 					GLOB::get().dynamics_add("alt", std::chrono::steady_clock::now(), current_nmea.alt);
-					cout<<C_MAGENTA<<"alt "<<GLOB::get().dynamics_get("alt").str()<<C_OFF<<endl;
+					// cout<<C_MAGENTA<<"alt "<<GLOB::get().dynamics_get("alt").str()<<C_OFF<<endl;
 				}
 			}
 		}
@@ -314,7 +314,10 @@ int main1(int argc, char** argv)
 			if( ssdv_tiles.size() )
 			{
 				auto tile = ssdv_tiles.next_tile();
-				cout<<"Send SSDV @RF"<<endl;
+				cout<<"Send SSDV @RF. Left tiles: "<<ssdv_tiles.size()<<endl;
+				// for(int i=0; i<256; ++i)
+				// 	cout<<" 0x"<<hex<<(int)(tile[i]);
+				// cout<<dec<<endl;
 				mtx2_write( radio_fd, tile.data(), sizeof(tile) );
 				if(!ssdv_tiles.size())	// delete image when done
 					system( (string("rm -f ") + G.cli.ssdv_image + " || echo \"Can't delete SSDV image.\"").c_str() );
diff --git a/tracker/code/main/ssdv_t.cpp b/tracker/code/main/ssdv_t.cpp
index d730624..c717fd8 100644
--- a/tracker/code/main/ssdv_t.cpp
+++ b/tracker/code/main/ssdv_t.cpp
@@ -1,6 +1,7 @@
 #include "ssdv_t.h"
 
 #include <iostream>
+#include <cstring>
 
 size_t ssdv_t::load_file(const std::string file_path)
 {
@@ -9,10 +10,11 @@ size_t ssdv_t::load_file(const std::string file_path)
         return 0;
 
     tile_t tile;
+    memset(tile.data(), 0x00, sizeof(tile));
     size_t total_tiles = 0;
     while(1)
     {
-        const size_t read_bytes = fread( tile.data(), sizeof(char), 256, p_file );
+        const size_t read_bytes = fread( tile.data(), 1, sizeof(tile), p_file );
         if(!read_bytes)
             return  total_tiles;
         tiles_que_.push_back(tile);
diff --git a/tracker/code/main/ssdv_t.h b/tracker/code/main/ssdv_t.h
index 5bdfde6..1ae2dcb 100644
--- a/tracker/code/main/ssdv_t.h
+++ b/tracker/code/main/ssdv_t.h
@@ -10,7 +10,7 @@ class ssdv_t
 
 public:
     using tile_t = std::array<char, 256>;
-    bool size() const   { return tiles_que_.size(); }
+    size_t size() const   { return tiles_que_.size(); }
     size_t load_file(const std::string file_path);
     tile_t next_tile(); // pop tile from que and return