Lectrosonics HMa Digital Hybrid Wireless UHF Plug-On Transmitter, B1 537.600 - 607.950 MHz

The Lectrosonics HMa Digital Hybrid Wireless UHF Plug-On Transmitter B1 operates in the 537.600 - 607.950 MHz range. It's a unique device that pairs perfectly with any microphone or line - level source through a standard XLR connector. You can choose phantom power at 5, 15, or 48 volts, or turn it off for dynamic microphones and line - level signals. It has an impressive tuning range of up to 76 MHz, with tuning steps of 100 kHz or 25 kHz (19 MHz for block 941 version with 695 frequencies). In Nu Hybrid mode, it delivers outstanding audio quality with wide frequency response and dynamic range. It also supports Lectrosonics Mode 3 and IFB receivers. **Key Features** - Connects to any XLR - equipped microphone or audio source. - Selectable 5, 15, 48 - volt phantom power. - 76 MHz tuning range in 100 kHz or 25 kHz steps for up to 3072 frequencies (941 band offers 695 frequencies over 19 MHz with 25 kHz steps). - Selectable 50/100 mW output power. - Adjustable low - frequency roll - off. - Runs on two AA batteries. - USB port for firmware updates. - IR port for quick setup. - Solid machined aluminum housing. **Technical Specifications** - **Operating Frequency Range**: Band A1 470.100 - 537.575, Band B1 537.600 - 607.950. - **Frequency Selection Steps**: Selectable 100 kHz or 25 kHz. - **RF Power output**: Selectable 100 or 50 mW. - **Compatibility Modes**: Nu Hybrid, Mode 3, IFB. - **Pilot tone**: 25 to 32 kHz; 5 kHz deviation (in Digital Hybrid mode). - **Frequency stability**: ± 0.002%. Compliant with ETSI EN 300 422 - 1 v1.4.2. - **Equivalent input noise**: - 125 dBV (A - weighted). - **Input level**: Nominal 2 mV to 300 mV before limiting, over 1V maximum with limiting. - **Input impedance**: 1K Ohm. - **Input limiter**: Dual envelope “soft” limiter with over 30 dB range. - **Gain control range**: 55 dB via panel - mounted membrane switches. - **Operating temp. range**: - 20°C - 40°C (- 5°F - 104°F). - **Modulation indicators**: Dual bi - color LEDs show - 20, - 10, 0, + 10 dB modulation relative to full modulation. - **Frequency Response**: 35 Hz to 20 kHz (+/- 1dB). - **Low frequency Roll - off**: Adjustable for - 3dB @30, 50, 70, 100, (120 or 150 Hz). - **THD**: 0.2% (typ. 100 Hz to 20 kHz). - **Input Dynamic Range**: 125 dB (with full Tx limiting). - **Controls & Indicators**: Power/Phantom “ON - OFF”, Phantom voltage selector, Audio input gain, LCD with membrane switches, LED audio level indicators. - **Audio Input Jack**: Standard 3 - pin XLR (female). - **Phantom Power**: 5V @ 18 mA max., 15V @ 15 mA max., 48V @ 4 mA max., plus “OFF”. - **USB port**: For firmware updates. - **IR (infrared) port**: Transfer settings from an IR - enabled receiver for quick setup. - **Antenna**: Housing and attached microphone form the antenna. - **Battery**: Two 1.5 - Volt AA alkaline. - **Battery Life (Duracell Ultra)**: AA alkaline, no Phantom Power: 5h 0m (tested with a dynamic microphone); AA alkaline, 48V Phantom Power: 3h 30m (tested with a Sanken CS1 for a phantom - powered microphone). - **Weight**: 6.7 oz (190 grams) without batteries. - **Dimensions**: 4.25x1.62x1.38 inches (107.95x41.15x35.05 mm). - **Emission Designator**: A1 44K3F3E, B2 57K9F3E. - **Included Accessories**: 2 AA Alkaline Batteries, 1 HM Pouch (Part #PHTRAN3), 1 Quickstart Guide.

Using the Lectrosonics HMa Transmitter is straightforward. First, insert two AA alkaline batteries into the device. Connect your microphone or audio source to the standard 3 - pin XLR female jack. You can then select the appropriate phantom power voltage (5, 15, or 48 volts) if needed, or turn it off for dynamic microphones. To set the frequency, use the frequency selection steps of 100 kHz or 25 kHz. You can also choose the output power to be either 50 or 100 mW. The adjustable low - frequency roll - off can be set according to your audio needs. For quick setup, use the IR port to transfer settings from an IR - enabled receiver. You can also connect to a computer via the USB port to update the firmware. When using, make sure the operating temperature is between - 20°C and 40°C (- 5°F and 104°F). Avoid exposing the device to extreme heat or cold. If you're using a phantom - powered microphone, be aware that the battery life will be shorter. For maintenance, keep the device clean. You can use a soft, dry cloth to wipe the exterior. When not in use, store the device in a cool, dry place. Replace the batteries regularly to ensure optimal performance. And don't forget to update the firmware occasionally to keep the device running smoothly.