Yaesu FT5D
Compliance Test
Compliance testing to ascertain if this radio meets ITU guidelines for spurious emissions.
Yaesu FT5D Final Grade: PASS
The Yaesu FT5D amateur radio sample we tested performed exceptionally well across both of its bands. We measured no spurious emissions exceeding the levels permitted by ITU guidelines.
It is important to note that this was a single-sample test and it is possible other samples could vary in performance.
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Power Output Testing
Power output was measured using a Surecom SW-33 Plus into a dummy load. The radio was set to maximum power. The ITU guidelines for spurious emissions require measurements of "the power (W) supplied to the antenna transmission line". That requirement makes this separate power measurement necessary, as it is incorrect to measure relative to the fundamental (f0). All numbers have been rounded.
2M
146.520 Mhz
4.9 watts
70cm
446.000 Mhz
4.9 watts
Spurious Emissions Testing
Spurious emissions were measured using a Tiny SA Ultra. The radio was set to maximum power and was connected to the TinySA through an attenuator. It is important to understand that the graphs below are using a decibel scale, not a linear scale. If a spurious emission spike appears to be almost as tall as the fundamental, that does not mean it is emitting almost as much power. Refer to the raw data shown.
VHF 2m Band Test Results: PASS
Raw Data 2m
All numbers have been roundedPower at Antenna: 36.9 dBm (4.9 watts)
Fundamental (f0): 36.2 dBm (4.2 watts)
The Yaesu FT5D sample that we tested displayed no spurious emissions above the 2m band fundamental that violated ITU guidelines. Power at the antenna was measured at 36.9 dBm and the highest spurious reading was more than 58 dB down, well beyond ITU requirements.
UHF 70cm Band Test Results: PASS
Raw Data 70cm
All numbers have been roundedPower at Antenna: 36.9 dBm (4.9 watts)
Fundamental (f0): 34.8 dBm (3.1 watts)
The Yaesu FT5D sample that we tested displayed no spurious emissions above the 70 cm band fundamental that violated ITU guidelines. Power at the antenna was measured at 36.9 dBm and the highest spurious reading was more than 57 dB down, well beyond ITU requirements.
Comments
Our tests indicate that the Yaesu FT5D is fully compliant with ITU guidelines on spurious emissions. This is no great surprise given Yaesu's excellent reputation and this model's flagship status within the Yaesu lineup.
Many thanks to Scott VE7HA from the Surrey Amateur Radio Communications Society for the use of his radio for testing.
~Reg Natarajan VA7ZEB / HJ1ZEB, July 13, 2024
Discuss this radio on our forums. https://forums.advancedamateur.ca/t/advancedamateur-ca-yaesu-ft5d