Hey Keith, with regards to the earlier post about the fuel system...
The J600R has a less significant fuel flow rate in comparison to the 1300R obviously. The 1300R and any other turbine of that thrust class will see a larger benefit from the 6mm lines through the fuse, but its likely not necessary at all for the 600R in a Reaction 54 since the fuel line from the pump will be relatively short.

The UAT comes with a short section of 6mm hose and a fuel dot. This is what I'd used for the filling port. Either that or I'd use the 6mm hose and a ball valve. The connection to your main tank should probably just be a short section of the largest diameter Tygon hose you can find. The only reason I recommend Tygon here is that the outlet tube from the main tank may need to have the hose stretched over it and wire wrapped, and Tygon is much softer and better for adapting... Between the UAT and the pump I'd start with 6mm polyurethane (like the fill port) then switch down (with a Barbed fitting) to 4mm a couple inches from the pump. Exiting the pump, you really don't need to worry about sizing up to 6mm in this case. 4mm line straight to the engine will suffice and still keep your pump voltages within reason. Installing a filter in this area is highly recommended though. I am in the midst of ordering a number of items from Festo and I can grab an extra 50 micron filter for 4mm hose if you like. I don't know the what my price will be but a safe estimate would be $7.00 for now. I'll post a link to the whole price list when I get the chance, but for now here's a few items of interest. I still need to verify the prices from an updated quote so they're subject to change at any time...

4mm 50 micron filter: $7.00
6mm 70 micron filter: $7.00
6mm to 4mm barb fitting: $0.50
6mm clear Polyurethane hose: $6.75 per 3m
4mm clear Polyurethane hose: $4.50 per 3m

4mm to 6mm Festo Union: $4.00
4mm union: $3.50
6mm union: $3.50
4mm Ball Valve: $11.00
6mm Ball Valve: $11.00


Now on the antenna and range...
The battery position could be causing trouble, but it doesn't seem to be much of an issue for the other R-543 owners out there. Basically what we state are ideal 'best practices'. Now, virtually no aircraft kit is ideal when installing all the hardware, so you have to make a few compromises. The most critical item to remove is the fuel pump, followed by the ECU and / or ECU pack.

Lastly, you should be seeing EGT's in the 500's to mid/high 600's. Any less and your probe is likely too far out. I've had one PST user flame out a couple times from low EGT, easily fixed by adjusting the probe depth.

Kelly