I’ve noticed that the RF power output from the Chinese radios can be quite variable from model to model, and even from individual radios of the same model & batch.
I’ve bought an RF Power meter (GY561) to do some tests on the HTs I have at present.
All tests were performed with the radio fully charged & still on the charging base, to make sure the supply voltage remained constant at 8.4v throughout the tests.
Frequencies used were 145.500 & 433.500 for VHF & UHF respectively.
The power meter was connected with ~8″ of RG174 Coax.
High Power:
UV-5R 1 (S/N: 13U1136132):
VHF: 6.3W
UHF: 4.9W
UV-5R 2 (S/N: 13U1136114):
VHF: 6.5W
UHF: 5.2W
UV-5R 3 (S/N: 130U541416):
VHF: 7.1W
UHF: 6.3W
Low Power:
UV-5R 1 (S/N: 13U1136132):
VHF: 2W
UHF: 1.2W
UV-5R 2 (S/N: 13U1136114):
VHF: 2.3W
UHF: 1.5W
UV-5R 3 (S/N: 130U541416):
VHF: 2.7W
UHF: 2.1W
