My reward.

src/main/java/su/a71/tardim_ic/tardim_ic/Registration.java

@@ -29,13 +29,12 @@ public class Registration {
     };
 
     // Blocks
-    public static final RegistryObject<Block> DIGITAL_TARDIM_INTERFACE = register("digital_tardim_interface", DigitalInterfaceBlock::new);
-
     private static <T extends Block> RegistryObject<T> register(String name, Supplier<T> block) {
         RegistryObject<T> registryObject = BLOCKS.register(name, block);
         ITEMS.register(name, () -> new BlockItem(registryObject.get(), new Item.Properties().tab(TARDIM_IC_TAB)));
         return registryObject;
     }
+    public static final RegistryObject<Block> DIGITAL_TARDIM_INTERFACE = register("digital_tardim_interface", DigitalInterfaceBlock::new);
 
     // Tile Entities
     public static final RegistryObject<BlockEntityType<DigitalInterfaceTileEntity>> DIGITAL_TARDIM_INTERFACE_TILEENTITY = Registration.BLOCK_ENTITIES.register("digital_tardim_interface", () -> new BlockEntityType<>(DigitalInterfaceTileEntity::new, Sets.newHashSet(DIGITAL_TARDIM_INTERFACE.get()), null));

src/main/java/su/a71/tardim_ic/tardim_ic/command/CommandModemTransmit.java

@@ -0,0 +1,70 @@
+package su.a71.tardim_ic.tardim_ic.command;
+
+// This will be added whenever I manage to convince TARDIM devs to make CommandManager.register public
+
+import com.mojang.brigadier.Command;
+import com.swdteam.common.command.tardim.CommandTardimBase;
+import com.swdteam.common.command.tardim.ICommand;
+import com.swdteam.tardim.TardimData;
+import com.swdteam.tardim.TardimManager;
+import net.minecraft.core.BlockPos;
+import net.minecraft.world.entity.player.Player;
+
+import dan200.computercraft.api.network.Packet;
+import dan200.computercraft.api.ComputerCraftAPI;
+
+import static com.swdteam.common.command.tardim.CommandTardimBase.sendResponse;
+
+public class CommandModemTransmit implements ICommand {
+    @Override
+    public void execute(String[] args, Player player, BlockPos pos, CommandTardimBase.CommandSource source) {
+        if (args.length == 3) {
+            TardimData data = TardimManager.getFromPos(pos);
+            if (data != null) {
+                if (data.hasPermission(player)) {
+                    try {
+                        int sendChannel = Integer.parseInt(args[0]);
+                        int replyChannel = Integer.parseInt(args[1]);
+                        String message = args[2];
+                        boolean allDimensions = Boolean.parseBoolean(args[3]) || args[3].equals("true");
+
+                        if (data.getTravelLocation() == null) {
+                            data.setTravelLocation(new TardimData.Location(data.getCurrentLocation()));
+                        }
+
+                        if (allDimensions)
+                        {
+                            ComputerCraftAPI.getWirelessNetwork().transmitInterdimensional(new Packet(sendChannel, replyChannel, message, new CommandSender(player, data.getTravelLocation().getPos())));
+                        }
+                        else {
+                            ComputerCraftAPI.getWirelessNetwork().transmitSameDimension(new Packet(sendChannel, replyChannel, message,
+                                    new CommandSender(player, data.getTravelLocation().getPos())), 300);
+                        }
+                        sendResponse(player, "Sent modem message", CommandTardimBase.ResponseType.COMPLETE, source);
+                    } catch (Exception var9) {
+                        sendResponse(player, "Invalid coordinates", CommandTardimBase.ResponseType.FAIL, source);
+                    }
+                } else {
+                    sendResponse(player, "You do not have permission", CommandTardimBase.ResponseType.FAIL, source);
+                }
+            }
+        } else {
+            sendResponse(player, this.getUsage(), CommandTardimBase.ResponseType.FAIL, source);
+        }
+    }
+
+    @Override
+    public String getCommandName() {
+        return "ccModemTransmit";
+    }
+
+    @Override
+    public String getUsage() {
+        return "ccModemTransmit <channel: int> <replyChannel: int> <message: string> <all_dimension: true/false>";
+    }
+
+    @Override
+    public CommandTardimBase.CommandSource allowedSource() {
+        return CommandTardimBase.CommandSource.BOTH;
+    }
+}

src/main/java/su/a71/tardim_ic/tardim_ic/command/CommandSender.java

@@ -0,0 +1,40 @@
+package su.a71.tardim_ic.tardim_ic.command;
+
+import dan200.computercraft.api.network.IPacketSender;
+import net.minecraft.core.BlockPos;
+import net.minecraft.resources.ResourceKey;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.level.Level;
+import net.minecraft.world.phys.Vec3;
+import org.jetbrains.annotations.NotNull;
+
+public class CommandSender implements IPacketSender {
+
+    private final Player player;
+    private final Level level;
+    private final BlockPos pos;
+
+    CommandSender(Player player, BlockPos pos) {
+        this.player = player;
+        this.level = player.level;
+        this.pos = pos;
+    }
+
+    @NotNull
+    @Override
+    public Level getLevel() {
+        return this.level;
+    }
+
+    @NotNull
+    @Override
+    public Vec3 getPosition() {
+        return new Vec3(this.pos.getX(), this.pos.getY(), this.pos.getZ());
+    }
+
+    @NotNull
+    @Override
+    public String getSenderID() {
+        return this.player.getName().getString();
+    }
+}

src/main/java/su/a71/tardim_ic/tardim_ic/sonic/SonicProbe.java

@@ -0,0 +1,22 @@
+package su.a71.tardim_ic.tardim_ic.sonic;
+
+import net.minecraft.world.item.Item;
+
+import com.swdteam.tardim.TardimData;
+import com.swdteam.tardim.TardimManager;
+
+import com.swdteam.client.gui.GuiCommandScreen;
+
+public class SonicProbe extends Item {
+    private TardimData tardim;
+    public SonicProbe(Properties properties) {
+        super(properties.stacksTo(1));
+    }
+
+    public void setTardim(TardimData tardim) {
+        this.tardim = tardim;
+    }
+
+    // Add tile entity
+
+}

src/main/resources/data/tardim_ic/recipes/digital_tardim_interface.json

@@ -1,7 +1,7 @@
 {
   "type": "minecraft:crafting_shaped",
   "pattern": [
-    "GGG",
+    "DDD",
     "R0R",
     "GRG"
   ],
@@ -17,6 +17,10 @@
     "0": {
       "item": "minecraft:ender_eye",
       "count": 1
+    },
+    "D": {
+      "item": "minecraft:polished_deepslate",
+        "count": 1
     }
   },
   "result": {