Most stations on the RHR network have what we called "Tiered connection pricing" This means you have an option on how you power on a station. You will have options for "RX Only", "100W" and "QRO".
You will see the corresponding rates associated with that connection type. Each station on the RHR network will have different rates.
When you power on a station at the 100w or QRO levels that is the rate for the duration of the time that you have that connection active regardless if you are receiving or transmitting.