The 4-Way RF Antenna Combiner from LISTEN Technologies is a passive device (no power supply needed) that takes four incoming RF signals and combines them into one outgoing antenna source. The combiner is used in applications where up to four different antenna sources are required, and only one antenna output is available or desired.

Combines four incoming RF signals and combines them into a single outgoing antenna source

Passive (no power supply needed)

Works with 72, 216 or 863 MHz

Lightweight and mountable

Related Questions and Answers

Q: 1. Is this for PC or for android smartphone ?

A: No. The LA-451 is specifically designed for use with a Listen Technologies LK-1 ListenTALK Transceiver (B&H #LILK1A0). For computer, you may want something more like the Cyber Acoustics AC-104 Monaural PC Headset with Microphone (B&H #CYAC104). Please contact our computer department or mobile department to best assist you in selecting a headset mic for use with a computer or Android smartphone.

Q: 2. Does each Receiver come Does each Receiver come with an earpiece or headphones?

A: Earpieces are not included with the Listen Technologies ListenTALK GR16 Wireless Communication System (1920 to 1930 MHz).

Q: 3. Can this system be battery powered for use in the field? For example on a cart?

A: no it will no work with Dc power so it would need to be plugged into an AC power source. if there isn't an AC source available in the field then it would not be possible to power this unit.

Q: 4. Can this system be used as a FM transmitter to the FM radios in cars?

A: This would not work for as FM transmitter to a car radio as it doesn't run on the same frequencies and would need a compatible receiver to get a signal.

Q: 5. Are these receivers compatible with off-brand transmitters in the 72-76 MHz range?

A: The Listen Technologies LR-500-72 Portable Programmable Display RF Receiver (72 MHz) BH #LILR500072 is compatible with Listen Technologies transmitters.

Q: 6. Can you combine IEM and IFB RF signals of different output strengths? For instance I have a Lectrosonics M2T that has two output carriers of 50mw each. and a Lectrosonics T4 IFB transmitter that outputs 250mw. Can I combine them all with this to a single antenna?

A: It is possible to use transmitters with different power output levels with the RF Venue COMBINE4 - 4-Channel Antenna Combiner. This combiner is a unity device that does not affect or change the output strength of the transmitters connected. It does, however, have a maximum input level of 100mW and would not be compatible for use with a transmitter pushing 250mW such as the Lectrosonics IFBT4.

Q: 7. It needs 12VDC 1.3A (15.6W), but is the barrel centre-positive or centre-negative?

A: The Listen Technologies Stationary RF Transmitter (216 MHz), BH # LILT80021601, features a center-positive 12VDC input port.

Q: 8. Can I use IFBT4's with this unit? They transmit at 250mW. Wondering if this can attenuate or handle that kind of power.

A: The Lectrosonics M2C accepts a maximum input of 100 mW per port, so no, they would not be recommended for use together.

Q: 9. under optimal conditions, what is the range?

A: Under optimal conditions, you can get up to 1,000 ft of coverage with this transmitter and our LA-122 antenna. Different antenna's can have different coverage area's, with LA-122 giving the most. If you are looking for more coverage, I would recommend our 216 MHz system which can give up to 3,000 ft of coverage. Thank you.

Q: 10. What are the advantages/disadvantages of using the 216mhz vs 72

A: The 216 MHz system would be great for large coverage areas. With the right antenna they can reach up to about 3,000 ft line-of-sight. You would only be able to have about 3 transmitters in the same area using 216 MHz, though. 72 MHz has a smaller range of about 1,000 ft line-of-sight, but you would be able to have about 7-8 transmitters in the same area. This tends to be the more popular frequency, as well.