Actual transmission power of 433 MHz walkie-talkies. Testing radios for emitted power. Radio tests

We present to your attention the results of a repeated test for transmission power of LPD radios. The tests were carried out on the same track as during the first test. The only difference is that in the meantime, a panel house was built, which blocked direct line of sight with the correspondent. With the exception of this obstacle, direct visibility between the radios was ensured. The distance between the tested walkie-talkies was 7 km, and the radios were tested on channel 1 of LPD in maximum power mode. The transmitted power at the receiving point was measured with a selective voltmeter.

Test results:

Auditory monitoring of the received signal was also carried out. The best in terms of sound quality and minimal noise were Vector VT-44 Master and Vector VT-44 H.

Please note that the obtained results do not directly indicate the possible communication range, since it also depends on the sensitivity and selectivity of the receiver, as well as the length and quality of antenna matching.

The highest transmitter power among the tested radios was shown by Motorola GP-300, but it apparently could not take first place due to the poorly matched standard antenna at 433 MHz.

The obstacle in the form of a panel house weakened the received signal, which is why the results of this radio test cannot be directly compared with the results of the first test. Nevertheless, the comparative indicators of the transmission power levels of the radios allow drawing appropriate conclusions.