Icom ID-800H
 Compliance Test

Compliance testing to ascertain if this radio meets ITU guidelines for spurious emissions.

Icom ID-800H Final Grade: PASS

The Icom ID-800H amateur radio sample we tested performed 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.

Tests performed in Surrey, BC, Canada on September 21, 2024 by Reg Natarajan.
Discuss this radio on our forums.  https://forums.advancedamateur.ca/t/icom-id-800h

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

51.7 watts

Using the ITU formula of 43+10log(P) dB, spurious emissions for a signal of 51.7 watts must be at least 60.1 dB below the power supplied to the antenna transmission line.  51.7 watts is approximately 47.1 dBm, which means no spurious signal may exceed -13 dBm, or approximately 50 microwatts.

70cm

446.000 Mhz

39.5 watts

Using the ITU formula of 43+10log(P) dB, spurious emissions for a signal of 39.5 watts must be at least 59 dB below the power supplied to the antenna transmission line.  39.5 watts is approximately 46 dBm, which means no spurious signal may exceed -13 dBm, or approximately 50 microwatts.

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 rounded

Power at Antenna: 47.1 dBm (51.7 watts)

Fundamental (f0): 45.8 dBm (38 watts)


The Icom Icom ID-800H sample that we tested displayed no significant spurious emissions above the 2m band fundamental in our testing.  


UHF 70cm Band Test Results: PASS

Raw Data 70cm

All numbers have been rounded

Power at Antenna: 46 dBm (39.5 watts)

Fundamental (f0): 44.5 dBm (28.1 watts)

The Icom ID-800H sample that we tested displayed no significant spurious emissions above the 70 cm band fundamental in our testing. 

Comments

My first mobile radio test!  I finally got the chance to make use of the giant 40dB 100w attenuator I bought so I could test mobiles.  The truck (and radio) had clearly just been off road and weren't in pristine condition at the time of testing, but the radio performed flawlessly.  

Please note the +30 dBm shown at the top left was a failure in my TinySA's auto-detection of the level of attenuation.  This did not affect the results at all.  One just needs to add 40 instead of 30 to the displayed numbers.

Many thanks to Karl VA7QCK from the Surrey Amateur Radio Communications Society for the use of his radio for testing.

~Reg Natarajan VA7ZEB / HJ1ZEB, September 21, 2024


Discuss this radio on our forums.  https://forums.advancedamateur.ca/t/icom-id-800h