This document presents the Radio Frequency (RF) exposure evaluation for the K10MAX device, conducted by Shenzhen Tongzhou Testing Co., Ltd. The evaluation adheres to Section B.4 of the 447498 D04 Interim General RF Exposure Guidance v01, ensuring compliance with Federal Communications Commission (FCC) regulations.
The report outlines the limits for RF exposure, derived from SAR-based thresholds, considering frequency, power, and separation distance. It details the formulas used to determine these thresholds, applicable to both time-averaged power and ERP. The evaluation includes considerations for antenna length and gain, as well as the separation distance from the antenna to the user.
Furthermore, the report presents the SAR-based exemption formula and its application for single fixed, mobile, and portable RF sources. It specifies the frequency range and separation distances for which this method is valid. The document also includes tables illustrating example values for different frequencies and distances, providing a clear understanding of the RF exposure limits.
The conducted power results for BLE and SRD modes are presented, along with manufacturing tolerances. The maximum ERP is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. The SAR evaluation is not required.
Array ( [0] => Array ( [url_sha] => 2e187538ea9f283d27c8d93c9a5ffb7492ee3d74991e06d52f1ea3728a1fcc34 [source] => fccid [url] => https://apps.fcc.gov/eas/GetApplicationAttachment.html?id=8093245 [href_text] => RF Exposure [href_description] => Keychron Technology (Shenzhen) Co., Ltd. K10MAX Wireless Keyboard 2BGKB-K10MAX 2BGKBK10MAX k10max [http_status] => 200 [http_lastmod] => 0000-00-00 00:00:00 [http_contenttype] => application/pdf [http_filename] => GetApplicationAttachment.html?id=8093245 [http_size] => 181997 [file_sha256] => ca428d169c5015a4dd93404f380188b43d0feac2ca60a8a90247d2fa843a2f6a [domain] => document.fccid ) ) Array ( [file_sha256] => ca428d169c5015a4dd93404f380188b43d0feac2ca60a8a90247d2fa843a2f6a [cleanFccId] => 2BGKBK10MAX [title] => RF Exposure Evaluation Report for K10MAX Device [description] => This report details the RF exposure evaluation for the K10MAX device, ensuring compliance with FCC regulations and safety standards for radio frequency emissions. [brand_name] => Shenzhen Tongzhou Testing Co.,Ltd [keywords] => ["K10MAX", "2BGKB-K10MAX", "RF Exposure", "SAR", "FCC", "Radio Frequency"] [intro] =>This document presents the Radio Frequency (RF) exposure evaluation for the K10MAX device, conducted by Shenzhen Tongzhou Testing Co., Ltd. The evaluation adheres to Section B.4 of the 447498 D04 Interim General RF Exposure Guidance v01, ensuring compliance with Federal Communications Commission (FCC) regulations.
The report outlines the limits for RF exposure, derived from SAR-based thresholds, considering frequency, power, and separation distance. It details the formulas used to determine these thresholds, applicable to both time-averaged power and ERP. The evaluation includes considerations for antenna length and gain, as well as the separation distance from the antenna to the user.
Furthermore, the report presents the SAR-based exemption formula and its application for single fixed, mobile, and portable RF sources. It specifies the frequency range and separation distances for which this method is valid. The document also includes tables illustrating example values for different frequencies and distances, providing a clear understanding of the RF exposure limits.
The conducted power results for BLE and SRD modes are presented, along with manufacturing tolerances. The maximum ERP is used for Routine Evaluation Exemption according to B.4 of 447498 D04 Interim General RF Exposure Guidance v01. The SAR evaluation is not required.
)
Array ( [0] => Array ( [id] => 8093245 [file_sha256] => [applicationId] => 1hiaTJflWkP3N4/8J/KSiA== [description] => RF Exposure [shortTermConfidential] => No [permanentConfidential] => No [supercede] => No [exhibitType] => RF Exposure Info [fileType] => Adobe Acrobat PDF [displayType] => pdf [fileSize] => 181997 [submissionDate] => 2025-03-05 00:00:00 [dateAvailable] => 2025-03-05 00:00:00 [creationDate] => [producer] => [modDate] => [title] => [creator] => [author] => [pages] => [realSize] => [html] => 0 [png] => 0 [txt] => 0 [version] => 1 [source] => 0 [fccId] => 2BGKB-K10MAX [cleanFccId] => 2BGKBK10MAX [exif] => 0 ) )