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Please see the tables, below, for the detailed attenuation values from the tests, presented in decibels (dB) and, in some cases, percentages as well.
A decibel is a unit of measurement, often associated with audio volume, but that is also used to measure EMF attenuation, or shielding. A decibel is a ratio between two values: in this case, the power of the EM radiation before it hits the shield, and after. You may read more about what a decibel is here.
However, precisely because decibels are a relatively obscure and confusing unit of measurement for consumers, when possible we have also posted the percentage of radiation that is attenuated, or shielded. The percentage value is quite simply that: the percentage of the wireless radiation that our products deflected during these tests.
Please note the actual amount of shielding provided by any EMF shielding product depends on the specific frequency of the wireless radiation you are trying to block, which is why we post results for different frequencies. As well, these tests were performed at different laboratories around the world at different times, so the way that the data is presented can vary. Learn more about what EMF testing is here. And if you’re interested, you can watch testing videos here.
The SYB 5G Phone Shield is made with a very powerful shielding fabric that provides excellent near-field and far-field RF shielding effectiveness of over 70 dB tested over 30MHz to 20GHz– that includes 5G frequencies.
This test was performed on July 30, 2019 per the GB/T 30142-2013 ANSI standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an E8257D PSG Analog Signal Generator and an E4447A PSA Spectrum Analyzer.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but a result of over 71 dB indicates 99.9% shielding effectiveness.
| Frequency (MHz) | Shielding (%) | Shielding (dB) |
|---|---|---|
| 30 | 99.9% | 71.2 |
| 100 | 99.9% | 72.9 |
| 600 | 99.9% | 74.3 |
| 915 | 99.9% | 76.8 |
| 1500 | 99.9% | 77.9 |
| 2450 | 99.9% | 77.2 |
| 3000 | 99.9% | 77.6 |
| 5000 | 99.9% | 77.6 |
| 8000 | 99.9% | 76.4 |
| 10000 | 99.9% | 75.2 |
| 12000 | 99.9% | 76.8 |
| 15000 | 99.9% | 75.5 |
| 18000 | 99.9% | 74.6 |
| 20000 | 99.9% | 75.3 |
The SYB Baby Blanket is made with a very powerful shielding fabric constituted from 82% cotton, interwoven with 18% silver thread, providing shielding effectiveness of between 15 and 35.9 dB tested between 15MHz to 26GHz– this includes 5G frequencies.
This test was performed on April 30, 2020 per the GJB 5792-2006 standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an 8563EC Spectrum Analyzer and ZN1180L and ZN1170E Signal Generators.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but to help we’ve also converted the decibels into a percentage value for shielding effectiveness.
| Frequency | Shielding Effectiveness (dB) | Shielding Effectiveness (%) |
|---|---|---|
| 15 MHz | 15 | 96.8377% |
| 30 MHz | 35.9 | 99.9743% |
| 100 MHz | 35.1 | 99.9691% |
| 450 MHz | 34.6 | 99.9653% |
| 950 MHz | 33.6 | 99.9563% |
| 1.5 GHz | 34.4 | 99.9637% |
| 3 GHz | 35.2 | 99.9698% |
| 6 GHz | 27.9 | 99.8378% |
| 10 GHz | 25.6 | 99.7246% |
| 18 GHz | 25.2 | 99.698% |
| 26 GHz | 17.3 | 98.1379% |
| Frequency (MHz) | Shielding Effectiveness (dB) | Shielding Effectiveness (%) |
|---|---|---|
| 10 | 67.5 | 99.99998 |
| 30 | 57.7 | 99.99983 |
| 100 | 46 | 99.99749 |
| 300 | 37.9 | 99.98378 |
| 1000 | 31.9 | 99.93543 |
| 3000 | 24.5 | 99.64519 |
The SYB Bandana is made with a very powerful shielding fabric constituted from 65% silver and 35% silk that provides shielding effectiveness of between 29 and 42 dB tested between 30MHz to 26GHz– this includes 5G frequencies.
This test was performed on April 26, 2020 per the GJB 5792-2006 standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an 8563EC Spectrum Analyzer and a ZN1170E Signal Generator.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but these results indicate over 99% shielding effectiveness at all tested frequencies.
| Frequency (MHz) | Shielding Effectiveness (%) | Shielding Effectiveness (dB) |
|---|---|---|
| 30 | 99.9945% | 42.6 |
| 100 | 99.9934% | 41.8 |
| 450 | 99.9931% | 41.6 |
| 950 | 99.9913% | 40.6 |
| 1500 | 99.9931% | 41.6 |
| 3000 | 99.9955% | 35.8 |
| 6000 | 99.9737% | 35.8 |
| 10000 | 99.9206% | 31 |
| 18000 | 99.9369% | 32 |
| 26000 | 99.8741% | 29 |
The SYB Bed Canopy is made with a very powerful shielding fabric provides shielding effectiveness of between 20 and 37.5 dB tested between 15MHz to 26GHz– this includes 5G frequencies.
This test was performed on June 3, 2020 per the GJB 5792-2006 standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an 8563EC Spectrum Analyzer and a ZN1170E Signal Generator.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but these results indicate over 99% shielding effectiveness at all tested frequencies.
| Frequency | Shielding Effectiveness (dB) | Shielding Effectiveness (%) |
|---|---|---|
| 15 MHz | 20.8 | 99.1682% |
| 30 MHz | 37.5 | 99.9822% |
| 100 MHz | 37 | 99.98% |
| 450 MHz | 36.9 | 99.9796% |
| 950 MHz | 35.7 | 99.9731% |
| 1500 MHz | 36.4 | 99.9771% |
| 3 GHz | 34.1 | 99.9611% |
| 6 GHz | 30.2 | 99.9045% |
| 10 GHz | 25.7 | 99.7308% |
| 18 GHz | 24.2 | 99.6198% |
| 26 GHz | 21.6 | 99.3082% |
The SYB Boxer Briefs are made with a very powerful shielding fabric made from 42% silver, with 53% cotton and 5% nylon, providing shielding effectiveness of between 15 and 51.4 dB tested between 15MHz to 40GHz– this includes 5G frequencies.
This test was performed on April 30, 2020 per the GJB 5792-2006 standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an 8563EC Spectrum Analyzer and ZN1180L and ZN1170E Signal Generators.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but to help we’ve also converted the decibels into a percentage value for shielding effectiveness.
| Frequency | Shielding Effectiveness (dB) | Shielding Effectiveness (%) |
|---|---|---|
| 15 MHz | 26 | 99.7488% |
| 30 MHz | 51.4 | 99.9993% |
| 100 MHz | 43.1 | 99.9951% |
| 450 MHz | 39.1 | 99.9877% |
| 950 MHz | 35.8 | 99.9737% |
| 1500 MHz | 34.9 | 99.9676% |
| 3 GHz | 30.9 | 99.9187% |
| 6 GHz | 27.5 | 99.8222% |
| 10 GHz | 37 | 99.98% |
| 18 GHz | 31 | 99.9206% |
| 26 GHz | 31 | 99.9206% |
| 40 GHz | 28.8 | 99.8682% |
The SYB Cap is lined with a very powerful shielding fabric made from 42% silver, with 53% cotton and 5% nylon, providing shielding effectiveness of between 15 and 51.4 dB tested between 15MHz to 40GHz– this includes 5G frequencies.
This test was performed on April 30, 2020 per the GJB 5792-2006 standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an 8563EC Spectrum Analyzer and ZN1180L and ZN1170E Signal Generators.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but to help we’ve also converted the decibels into a percentage value for shielding effectiveness.
| Frequency | Shielding Effectiveness (dB) | Shielding Effectiveness (%) |
|---|---|---|
| 15 MHz | 26 | 99.7488% |
| 30 MHz | 51.4 | 99.9993% |
| 100 MHz | 43.1 | 99.9951% |
| 450 MHz | 39.1 | 99.9877% |
| 950 MHz | 35.8 | 99.9737% |
| 1500 MHz | 34.9 | 99.9676% |
| 3 GHz | 30.9 | 99.9187% |
| 6 GHz | 27.5 | 99.8222% |
| 10 GHz | 37 | 99.98% |
| 18 GHz | 31 | 99.9206% |
| 26 GHz | 31 | 99.9206% |
| 40 GHz | 28.8 | 99.8682% |
| Frequency (MHz) | Effectiveness (dB) | Effectiveness (%) |
|---|---|---|
| 800 | -27 | 95.53 |
| 1700 | -22 | 92.06 |
| 1900 | -22 | 92.06 |
| 2100 | -23 | 92.92 |
| 3000 | -25 | 94.38 |
The H.A.R.D. is not a shielding device– instead, it attenuates by absorbing the EMF radiation and converting it to heat, which dissipates through the unit. So the type of testing performed on the H.A.R.D. is a bit different.
View the laboratory report of the SYB H.A.R.D. from the University of Gloucestershire.
Our SYB Laptop Pad was tested on June 28, 2020 at Ordos Technologies EMC & Safety Test Laboratory in Israel. These included ELF, radio frequency, and microwave (including 5G frequencies up to 20 GHz).
The tests were conducted, inside a semi-anechoic chamber in order to test with a low-level ambient interference. Attenuation was measured between 650 MHz – 20 GHz using a N5183A KeySight Signal Generator, a 5172 OPHIR Amplifier, a C.A 43 Chauvin-Arnoux Field-meter, an APN101B AEL Inc. Antenna, and a TM-192D Tenmars ELF meter.
| Frequency (MHz) | Without Laptop Pad (V/m) | With Laptop Pad (V/m) | Attenuation |
|---|---|---|---|
| 650 | 19 | 1.8 | 90.53% |
| 850 | 26.5 | 2.6 | 90.19% |
| 900 | 23 | 1.6 | 93.04% |
| 980 | 29.2 | 1.6 | 94.52% |
| 1800 | 88 | 1.7 | 98.07% |
| 2400 | 114 | 2.1 | 98.16% |
| 5000 | 11.2 | 0.4 | 96.43% |
| 7500 | 14.8 | 1.2 | 91.89% |
| 10000 | 51.6 | 1.7 | 96.71% |
| 15000 | 11 | 0.5 | 95.45% |
| 20000 | 8.5 | 0.6 | 92.94% |
| Frequency | Without Laptop Pad (mG) | With Laptop Pad (mG) | Attenuation |
|---|---|---|---|
| 3 – 30 KHz | 1330 | 54 | 95.94% |
The SYB Neck Gaiter is made with an extremely powerful shielding fabric, made from 90% silver that provides excellent near-field and far-field RF shielding effectiveness that has been tested from 15MHz to 40GHz– that is well into the range of 5G frequencies.
This test was performed on July 13, 2020 per the GJB 5892-2006 standard for measuring methods for shielded enclosures. The test was performed with a ZN1180L and ZN1170E Signal Generator, and an 8563EC Spectrum Analyzer.
| Frequency | Shielding Effectiveness (dB) | Shielding Effectiveness (%) |
|---|---|---|
| 15 MHz | 21 | 99.2057% |
| 30 MHz | 46.3 | 99.9977% |
| 100 MHz | 45.7 | 99.9973% |
| 450 MHz | 45.5 | 99.9972% |
| 950 MHz | 45.7 | 99.9973% |
| 1500 MHz | 46.7 | 99.9979% |
| 3 GHz | 46.1 | 99.9975% |
| 6 GHz | 43.8 | 99.9958% |
| 10 GHz | 34.8 | 99.9669% |
| 18 GHz | 32.5 | 99.9438% |
| 26 GHz | 26 | 99.7488% |
| 40 GHz | 24.7 | 99.6612% |
The SYB Phone Pouch is made with a very powerful shielding fabric that provides excellent near-field and far-field RF shielding effectiveness of over 70 dB tested over 30MHz to 20GHz– that includes 5G frequencies.
This test was performed on July 30, 2019 per the GB/T 30142-2013 ANSI standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an E8257D PSG Analog Signal Generator and an E4447A PSA Spectrum Analyzer.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but a result of over 71 dB indicates 99.9% shielding effectiveness.
| Frequency (MHz) | Shielding (%) | Shielding (dB) |
|---|---|---|
| 30 | 99.9% | 71.2 |
| 100 | 99.9% | 72.9 |
| 600 | 99.9% | 74.3 |
| 915 | 99.9% | 76.8 |
| 1500 | 99.9% | 77.9 |
| 2450 | 99.9% | 77.2 |
| 3000 | 99.9% | 77.6 |
| 5000 | 99.9% | 77.6 |
| 8000 | 99.9% | 76.4 |
| 10000 | 99.9% | 75.2 |
| 12000 | 99.9% | 76.8 |
| 15000 | 99.9% | 75.5 |
| 18000 | 99.9% | 74.6 |
| 20000 | 99.9% | 75.3 |
The SYB Picture Frame is lined with a very powerful shielding fabric woven with copper and nickel that provides shielding effectiveness of between 39 and 65.1 dB tested between 15MHz to 40GHz– this includes 5G frequencies.
This test was performed on August 13, 2020 per the GJB 5792-2006 standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an 8563EC Spectrum Analyzer and a ZN1170E Signal Generator.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but these results indicate over 99% shielding effectiveness at all tested frequencies.
| Frequency | Shielding Effectiveness (dB) | Shielding Effectiveness (%) |
|---|---|---|
| 15 MHz | 48 | 99.9984% |
| 30 MHz | 64.9 | 99.9999% |
| 100 MHz | 64.8 | 99.9999% |
| 450 MHz | 65.1 | 99.9999% |
| 950 MHz | 60 | 99.9999% |
| 1500 MHz | 56 | 99.9997% |
| 3 GHz | 55.6 | 99.9997% |
| 6 GHz | 57.8 | 99.9998% |
| 10 GHz | 54.5 | 99.9996% |
| 18 GHz | 43.2 | 99.9952% |
| 26 GHz | 41.3 | 99.9926% |
| 40 GHz | 39 | 99.9874% |
| Frequency (MHz) | Effectiveness (dB) | Effectiveness (%) |
|---|---|---|
| 800 | -41 | 99.10 |
| 1700 | -46 | 99.50 |
| 1900 | -29 | 96.45 |
| 2100 | -34 | 98.00 |
| 3000 | -18 | 87.40 |
The SYB Picture Frame is lined with a very powerful shielding fabric woven with copper and nickel that provides shielding effectiveness of between 39 and 65.1 dB tested between 15MHz to 40GHz– this includes 5G frequencies.
This test was performed on August 13, 2020 per the GJB 5792-2006 standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an 8563EC Spectrum Analyzer and a ZN1170E Signal Generator.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but these results indicate over 99% shielding effectiveness at all tested frequencies.
| Frequency | Shielding Effectiveness (dB) | Shielding Effectiveness (%) |
|---|---|---|
| 15 MHz | 50.1 | 99.999% |
| 30 MHz | 65.9 | 100% |
| 100 MHz | 65.7 | 100% |
| 450 MHz | 68.2 | 100% |
| 950 MHz | 70 | 100% |
| 1500 MHz | 73 | 100% |
| 3 GHz | 76.8 | 100% |
| 6 GHz | 72.6 | 100% |
| 10 GHz | 66.5 | 100% |
| 18 GHz | 62.6 | 99.9999% |
| 26 GHz | 63.3 | 100% |
| 40 GHz | 63 | 99.9999% |
The SYB Serenity Canopy is made with a very powerful shielding fabric provides shielding effectiveness of between 20 and 37.5 dB tested between 15MHz to 26GHz– this includes 5G frequencies.
This test was performed on June 3, 2020 per the GJB 5792-2006 standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an 8563EC Spectrum Analyzer and a ZN1170E Signal Generator.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but these results indicate over 99% shielding effectiveness at all tested frequencies.
| Frequency | Shielding Effectiveness (dB) | Shielding Effectiveness (%) |
|---|---|---|
| 15 MHz | 20.8 | 99.1682% |
| 30 MHz | 37.5 | 99.9822% |
| 100 MHz | 37 | 99.98% |
| 450 MHz | 36.9 | 99.9796% |
| 950 MHz | 35.7 | 99.9731% |
| 1500 MHz | 36.4 | 99.9771% |
| 3 GHz | 34.1 | 99.9611% |
| 6 GHz | 30.2 | 99.9045% |
| 10 GHz | 25.7 | 99.7308% |
| 18 GHz | 24.2 | 99.6198% |
| 26 GHz | 21.6 | 99.3082% |
The SYB Sling Bag is lined with a very powerful shielding fabric that provides excellent near-field and far-field RF shielding effectiveness of over 70 dB tested over 30MHz to 20GHz– that includes 5G frequencies.
This test was performed on July 30, 2019 per the GB/T 30142-2013 ANSI standard for measuring methods for shielding effectiveness of planar electromagnetic shielding materials. The test was performed with an E8257D PSG Analog Signal Generator and an E4447A PSA Spectrum Analyzer.
The results are reported in decibels (dB). EMF attenuation and shielding tests often report results in decibels. We have a post explaining decibels, but a result of over 71 dB indicates 99.9% shielding effectiveness.
| Frequency (MHz) | Shielding (%) | Shielding (dB) |
|---|---|---|
| 30 | 99.9% | 71.2 |
| 100 | 99.9% | 72.9 |
| 600 | 99.9% | 74.3 |
| 915 | 99.9% | 76.8 |
| 1500 | 99.9% | 77.9 |
| 2450 | 99.9% | 77.2 |
| 3000 | 99.9% | 77.6 |
| 5000 | 99.9% | 77.6 |
| 8000 | 99.9% | 76.4 |
| 10000 | 99.9% | 75.2 |
| 12000 | 99.9% | 76.8 |
| 15000 | 99.9% | 75.5 |
| 18000 | 99.9% | 74.6 |
| 20000 | 99.9% | 75.3 |
Our SYB Tablet Pad was tested on June 28, 2020 at Ordos Technologies EMC & Safety Test Laboratory in Israel. These included ELF, radio frequency, and microwave (including 5G frequencies up to 20 GHz).
The tests were conducted, inside a semi-anechoic chamber in order to test with a low-level ambient interference. Attenuation was measured between 650 MHz – 20 GHz using a N5183A KeySight Signal Generator, a 5172 OPHIR Amplifier, a C.A 43 Chauvin-Arnoux Field-meter, an APN101B AEL Inc. Antenna, and a TM-192D Tenmars ELF meter.
| Frequency (MHz) | Without Laptop Pad (V/m) | With Laptop Pad (V/m) | Attenuation |
|---|---|---|---|
| 650 | 19 | 1.8 | 90.53% |
| 850 | 26.5 | 2.6 | 90.19% |
| 900 | 23 | 1.6 | 93.04% |
| 980 | 29.2 | 1.6 | 94.52% |
| 1800 | 88 | 1.7 | 98.07% |
| 2400 | 114 | 2.1 | 98.16% |
| 5000 | 11.2 | 0.4 | 96.43% |
| 7500 | 14.8 | 1.2 | 91.89% |
| 10000 | 51.6 | 1.7 | 96.71% |
| 15000 | 11 | 0.5 | 95.45% |
| 20000 | 8.5 | 0.6 | 92.94% |
| Frequency | Without Laptop Pad (mG) | With Laptop Pad (mG) | Attenuation |
|---|---|---|---|
| 3 – 30 KHz | 1330 | 54 | 95.94% |
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