04-11-2025, 09:50 AM
Again, you do not understand how power measurements work. Every 6dB doubles the effective range. What you see is NOT a factor of 6.3. 8dB is a factor of 8/6dB, which is a factor of 1.33333. However, your measurement is subjective to the antenna angle, distance, and the environment. This is why a direct connection is used during FCC testing.
100mW = 20dBm
200mW = 23dBm
400mW = 26dBm
What you are missing here is the receiver sensitivity. Spektrum receivers typically report a sensitivity of -92dBi. We know from testing built-in antennas in the past (we had a 3 channel receiver we sold that used a similar antenna) that the sensitivity is typically a bit lower. So we expect the AR410 sensitivity to be -89dBi to maybe -91dBi. The Nano receiver has a sensitivity of -102dBi. That is a difference of 10 to 12dBi. So, somewhere between 3.333 to 4 times the range when using the exact same transmitter output power.
100mW = 20dBm
200mW = 23dBm
400mW = 26dBm
What you are missing here is the receiver sensitivity. Spektrum receivers typically report a sensitivity of -92dBi. We know from testing built-in antennas in the past (we had a 3 channel receiver we sold that used a similar antenna) that the sensitivity is typically a bit lower. So we expect the AR410 sensitivity to be -89dBi to maybe -91dBi. The Nano receiver has a sensitivity of -102dBi. That is a difference of 10 to 12dBi. So, somewhere between 3.333 to 4 times the range when using the exact same transmitter output power.