04-12-2025, 12:22 PM
When pressing the PROG button on the transmitter module (or putting it into RANGE TEST mode for the EVO), the output power drops to 0.019mW. 100mw->0.19mW = ~41.2 times the difference in range and we see this in practical applications. If your range test is good to 125 feet then your effective range will be 1 mile (on the ground).
Yes, there is a dramatic difference between the earth and the sky. Range testing directly on the ground (which is not how you are suppose to range test the XtremeLink system) is much shorter than 1 foot off of the ground. Range test over wet ground (especially grass) will be dramatically shorter compared to dry soil, concrete, or asphalt.
In our RFU testing we used a 6 foot tower at one end and a 150 foot tower at the other end and we had 90% packet success at 7 miles, at 250Kbps. Reducing the data rate increases the range and the packet success. You can safely fly on >25% packet success.
Yes, there is a dramatic difference between the earth and the sky. Range testing directly on the ground (which is not how you are suppose to range test the XtremeLink system) is much shorter than 1 foot off of the ground. Range test over wet ground (especially grass) will be dramatically shorter compared to dry soil, concrete, or asphalt.
In our RFU testing we used a 6 foot tower at one end and a 150 foot tower at the other end and we had 90% packet success at 7 miles, at 250Kbps. Reducing the data rate increases the range and the packet success. You can safely fly on >25% packet success.