Used Lectrosonics HMa UHF Plug-On Wireless Transmitter, Frequency Band A1 (470.100-537.575MHz)

With its innovative design, the HMa UHF Plug-On Wireless Transmitter, Frequency Band A1 (470.100-537.575MHz) is a versatile and high-quality solution for all your audio and video transmission needs. This advanced transmitter is compatible with any microphone or line level source via a standard XLR connector, offering selectable phantom power at 5, 15, and 48 volts. It can also be switched off for use with dynamic microphones and line level signal sources.

This reliable transmitter boasts a wide tuning range of up to 76 MHz, with precise tuning steps in increments of 100 kHz or 25 kHz, allowing for up to 3072 frequencies. This extensive tuning range spans three standard 25.6 MHz Lectrosonics frequency bands, each featuring 256 different pilot tone frequencies for seamless compatibility with all Digital Hybrid Wireless receivers.

The HMa UHF Plug-On Wireless Transmitter also includes DSP compatibility modes, making it adaptable to work with legacy Lectrosonics analog wireless microphone receivers and IFB receivers, as well as some receivers from other manufacturers.

Powered by two AA batteries, this durable transmitter features a multi-color LED for clear status indication. A USB port is included for convenient firmware updates, while an IR (infrared) port simplifies setup with IR enabled receivers.

The input amplifier of this advanced transmitter employs an ultra-low noise op-amp for quiet operation. It is gain controlled with a wide-range dual envelope limiter, providing over 30 dB of headroom above full modulation. A 24-bit A-D converter digitizes the audio, filtering out supersonic noise above 21 kHz. The resulting signal is encoded with a proprietary algorithm to produce an analog data signal for RF transmission.

The antenna, formed between the machined aluminum housing of the transmitter and the attached microphone or cable, functions as a dipole radiator when attached to a hand-held microphone and somewhat like a ground plane antenna when connected with a cable or plugged directly into a mixer.

The HMa UHF Plug-On Wireless Transmitter is a testament to Lectrosonics' commitment to delivering innovative, high-quality audio equipment. Its Digital Hybrid Wireless design combines digital audio with an analog FM radio link to provide outstanding audio quality and the exemplary RF performance of the finest analog wireless systems.

The battery compartment door is hinged to the housing and remains attached to the transmitter when opened. It securely latches in place and applies pressure to the batteries when closed. The two AA batteries are connected in series through a conductive plate on the door.

Setup and adjustments are made with the control panel membrane switches and LCD. The transmitter can be powered up without the transmitter output enabled to allow frequency adjustments without causing interference to other wireless systems nearby. The switches can also be bypassed to prevent accidental changes. Dual color LEDs indicate audio input level and the power LED changes color under low battery conditions.

In summary, the HMa UHF Plug-On Wireless Transmitter, Frequency Band A1 (470.100-537.575MHz) is a reliable, advanced, and high-quality solution for all your wireless audio and video transmission needs.