FCC RF Exposure Report

1. ATTESTATION OF TEST RESULTS

Applicant Information

Company Name: AMAX INDUSTRIAL GROUP CHINA CO.,LTD

Address: OFFICE NO.3 10/F WITTY COMMERCIAL BUILDING 1A-1L TUNG CHOI STREET MONGKOK KOWLOON HONG KONG

Manufacturer Information

Company Name: AMAX INDUSTRIAL GROUP CHINA CO.,LTD

Address: OFFICE NO.3 10/F WITTY COMMERCIAL BUILDING 1A-1L TUNG CHOI STREET MONGKOK KOWLOON HONG KONG

EUT Information

EUT Name: VA-1000 HD Streaming Drone

Model: VL-6267R

Brand name: AMAX

Sample Received Date: January 21, 2025

Sample Status: Normal

Sample ID: 8207619

Date of Tested: March 05, 2025 to April 15, 2025

Applicable Standards

Prepared By: Daniel Zhang, Project Engineer

Checked By: Kebo Zhang, Senior Project Engineer

Approved By: Stephen Guo, Operations Manager

2. TEST METHODOLOGY

The tests documented in this report were performed in accordance with 47 CFR FCC Part 1 Subpart I, section 1.1307 and KDB 447498 D04 Interim General RF Exposure Guidance v01.

3. FACILITIES AND ACCREDITATION

Accreditation Certificate

A2LA (Certificate No.: 4102.01) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been assessed and proved to be in compliance with A2LA.

FCC (FCC Designation No.: CN1187) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. Has been recognized to perform compliance testing on equipment subject to the Commission's Declaration of Conformity (DoC) and Certification rules.

ISED (Company No.: 21320) UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch. has been registered and fully described in a report filed with ISED. The Company Number is 21320 and the test lab Conformity Assessment Body Identifier (CABID) is CN0046.

Notes:

• Note 1: All tests measurement facilities use to collect the measurement data are located at Room 101, Building 2, Zhihui City Phase I, No.4, Information Road, Songshan Lake, Dongguan, Guangdong, China.
• Note 2: The test anechoic chamber in UL Verification Services (Guangzhou) Co., Ltd. Song Shan Lake Branch had been calibrated and compared to the open field sites and the test anechoic chamber is shown to be equivalent to or worst case from the open field site.
• Note 3: For below 30 MHz, lab had performed measurements at test anechoic chamber and comparing to measurements obtained on an open field site. And these measurements below 30 MHz had been correlated to measurements performed on an OFS.

4. DESCRIPTION OF EUT

EUT Name: VA-1000 HD Streaming Drone

Model: VL-6267R

Product Description (2.4G Wireless)

Frequency Range: 2440 MHz to 2480 MHz

Type of Modulation: GFSK

Product Description (2.4G WLAN)

Frequency Range: 2412 MHz to 2472 MHz

Type of Modulation: IEEE 802.11b: DSSS(CCK, DQPSK, DBPSK)

Type of Modulation: IEEE 802.11g/n: OFDM(64-QAM, 16-QAM, QPSK, BPSK)

Radio Technology: IEEE 802.11b/g/n HT20

Normal Test Voltage: Battery 3.7V

5. REQUIREMENT

LIMIT AND CALCULATION METHOD

According to 447498 D04 Interim General RF Exposure Guidance v01,

2.1.4 MPE-Based Exemption

An alternative to the SAR-based exemption is provided in § 1.1307(b)(3)(i)(C), for a much wider frequency range, from 300 kHz to 100 GHz, applicable for separation distances greater or equal to λ/2π, where λ is the free-space operating wavelength in meters. The MPE-based test exemption condition is in terms of ERP, defined as the product of the maximum antenna gain and the delivered maximum time-averaged power. For this case, a RF source is an RF exempt device if its ERP (watts) is no more than a frequency-dependent value, as detailed tabular form in Appendix B. These limits have been derived based on the basic specifications on Maximum Permissible Exposure (MPE) considered for the FCC rules in § 1.1310(e)(1).

B.4 SAR-based Exemption

SAR-based thresholds are derived based on frequency, power, and separation distance of the RF source. The formula defines the thresholds in general for either available maximum time-averaged power or maximum time-averaged ERP, whichever is greater.

If the ERP of a device is not easily determined, such as for a portable device with a small form factor, the applicant may use the available maximum time-averaged power exclusively if the device antenna or radiating structure does not exceed an electrical length of 1/4.

As for devices with antennas of length greater than 1/4 where the gain is not well defined, but always less than that of a half-wave dipole (length λ/2), the available maximum time-averaged power generated by the device may be used in place of the maximum time-averaged ERP, where that value is not known.

The separation distance is the smallest distance from any part of the antenna or radiating structure for all persons, during operation at the applicable ERP. In the case of mobile or portable devices, the separation distance is from the outer housing of the device where it is closest to the antenna.

The SAR-based exemption formula of § 1.1307(b)(3)(i)(B), repeated here as Formula (B.2), applies for single fixed, mobile, and portable RF sources with available maximum time-averaged power or effective radiated power (ERP), whichever is greater, of less than or equal to the threshold Pth (mW).

This method shall only be used at separation distances from 0.5 cm to 40 cm and at frequencies from 0.3 GHz to 6 GHz (inclusive). Pth is given by Formula (B.2).

MPE-based Exemption

Pth (mW) = (2040f / (ERP20cm (mW))) for 0.3 GHz < f < 1.5 GHz

Pth (mW) = (3060 / (ERP20cm (mW))) for 1.5 GHz < f ≤ 6 GHz

Pth (mW) = ERP20cm(d/20 cm)² for d ≤ 20 cm

Pth (mW) = ERP20cm for 20 cm < d ≤ 40 cm

where x = - log10 (60 / (ERP20cm * √f))

and f is in GHz, d is the separation distance (cm), and ERP20cm is per Formula (B.1). The example values shown in Table B.2 are for illustration only.

Fixed RF sources operating in the same time-averaging period- § 1.1307(b)(3)(ii)(B)

Either SAR-based or MPE-based exemption may be considered for test exemption for fixed, mobile, or portable device exposure conditions; therefore, the contributions from each exemption in conjunction with the measured SAR (Evaluatedk term) shall be used to determine exemption for simultaneous transmission according to Formula (C.1) [repeated from § 1.1307(b)(3)(ii)(B)].

Formula (C.1): Σ(Pi/Pth,i) + Σ(ERPj/ERPth,j) + Σ(Evaluatedk/Exposure Limitk) ≤ 1

CALCULATED RESULTS

For Single RF Source

For Single RF Source (WIFI2.4G)

Notes:

• 1. The maximum power of 2.4G Wireless comes from test report 4791644171-1-RF-2.
• 2. ERP= Average Field Strength-97.4
• 3. The power of WIFI2.4G comes from operation description.
• 4. The assess distance is 20 cm.
• 5. 2.4G Wireless & WiFi 2.4G can't transmit simultaneously (Declared by client)