Electronics / Antenna Accessories
Sennheiser SPECTERA SEK UHF/1G4 User Manual
Quick guide for the Sennheiser SPECTERA SEK UHF and SEK 1G4 bodypack systems. Includes technical specifications, regulatory compliance, safety information, and warranty details.
Quick answers from the manual
Quick answer
- The Sennheiser SPECTERA SEK UHF/1G4 is a professional wireless bodypack system. This manual provides regulatory compliance, safety guidelines, and technical specifications for the device. p. 1, 2
Key actions
- Check local frequency regulations before operation. p. 1, 2
- Obtain AFTRCC authorization for 1435–1525 MHz band (USA). p. 1
Technical specifications
| Parameter | Value | Meaning | Pages |
|---|---|---|---|
| RF transmission power | up to 50 mW | Maximum output power | p. 2 |
| Battery | BA 70 | Rechargeable battery pack | p. 2 |
| Dimensions | 83.5 x 62 x 21 mm | Physical size without antenna | p. 2 |
Where to find it in the PDF
- Regulatory and Safety Information p. 1
- Technical Specifications p. 2
Table of contents
Quick guide from the manual
The Sennheiser SPECTERA SEK UHF and SEK 1G4 are professional wireless bodypack systems designed for commercial use. This document provides essential regulatory, safety, and technical information required for operation. Before using the device, ensure you check local frequency regulations, as these vary by country.
Intended use
The product is intended for commercial use. Improper use includes any application not described in the instruction manual. Sennheiser is not liable for damages resulting from misuse, improper use, or the use of unauthorized accessories.
Safety and disposal
- Battery Safety: Handle lithium-containing batteries with care due to fire and ingestion risks. Use rechargeable batteries or long-life batteries to reduce waste.
- Disposal: Do not dispose of the product or batteries in household waste. Use designated collection points for electrical and electronic equipment and batteries to promote recycling and prevent environmental pollution.
- Data Privacy: The device captures speech and acoustic signals. Users are responsible for complying with data protection laws (such as GDPR) when recording or using voice data for identification purposes.
Regulatory compliance
The device complies with various international standards, including EU Directive 2014/53/EU (Radio Equipment), FCC Part 15, and ISED license-exempt standards. Users in the United States must obtain frequency coordination approval from the AFTRCC before operating in the 1435–1525 MHz band.
Technical specifications
The system features multi-carrier, TDMA, TDD transmission. It supports up to 128 links per RF channel. Audio frequency response is 20 Hz to 20,000 Hz (±1 dB) for specific codecs. The device is powered by a BA 70 rechargeable battery pack.
Manufacturer information
Sennheiser
Practical help
Common problems
Connection loss
Check if batteries are empty or old. Replace with charged batteries or use rechargeable ones.
Exceeding transmission range
Ensure the device is within the operational range to maintain a stable connection.
Before use
- Check local frequency regulations at www.sennheiser.com/sifa
- Ensure the BA 70 battery pack is fully charged
- Verify that the device is used within the specified temperature range (-10 °C to +50 °C)
- If operating in the US 1435–1525 MHz band, obtain AFTRCC frequency coordination approval
Specs in practice
- RF transmission power
- Up to 50 mW (country-specific limits apply)
- Battery operating time
- Up to 7 hours for unidirectional microphone use; up to 5 hours for bidirectional use
Model compatibility
- Frequency usage is subject to country-specific conditions and restrictions.
- Requires firmware updates for future cascade port functions.
Manual page author
David Miller
Documentation analyst
Organizes user manual content into clear summaries, with attention to model details, product context, and everyday usability.