contacta RF-HM Radio Frequency Systems
Product Information
Specifications
- Product Name: Radio Frequency Systems
- Transmission Type: FM Radio Frequency
- Intended Use: Wireless transmission of speech or music
- Range: Up to 100 meters in buildings
- Channels: Up to 42 channels simultaneously
Product Usage Instructions
Transmitters
The transmitters are connected to an audio source like a microphone or PA system and send signals to compatible RF receivers.
Radio Frequency Rack Transmitter (RF-TXRM-865/RF-TXRM-915)
The Rack Transmitter is designed for wireless and amplified assistive listening in large venues. It operates on either 865MHz or 915MHz frequencies.
Applications: Large venues, assistive listening systems
What’s in the Box: Transmitter unit, power adapter, user manual
Physical Data:
- Dimensions: Mixed
- Weight: 1.25kg (2.75lbs)
- Finish: Mixed
Portable Radio Frequency Transmitter (RF-TX1-865/RF-TX1-915)
The compact Portable Transmitter sends signals of speech or music to compatible portable receivers across selectable channels. Available in 865MHz or 915MHz versions.
Receivers
The receivers can be used with Inductive Neck Loops for direct sound reception in T Coil enabled hearing instruments.
FAQ
- Q: What is the wireless coverage range of the transmitters?
A: The transmitters have an approximate wireless coverage of 100 meters in line of sight at high power. - Q: How many channels are accessible on the 865MHz version?
A: The 865MHz version allows access to 42 channels, while the 915MHz version has 25 available channels.
Radio Frequency Systems
High-quality, portable, and fixed wireless transmission of speech or music over FM radio frequency. Delivering superb intelligibility and crystal-clear amplified sounds.
Note:
Contacta has a policy of continuous product development. Therefore, small specification changes may not be reflected in this catalog. Images, labels, packaging, accessories, and product colors are subject to change without notice.
Introduction
Radiofrequency systems provide clear sound for assistive listening in small or large public venues and tour guide applications.
- Contacta RF assistive listening system is ideal for when sound sources need to be wirelessly transmitted across large areas, sending signals through walls, ceilings or other obstacles regardless of building characteristics.
- Transmitters are connected to an audio source such as a microphone or PA system and send signals to compatible RF receivers. Our system can utilize up to 42 channels simultaneously with a range of up to 100 meters in buildings.
- Receivers can be used with Inductive Neck Loops, allowing users to receive the sound directly in their T-Coil-enabled hearing instrument.
Transmitters
Radio Frequency Rack Transmitter
RF-TXRM-865/RF-TXRM-915
- The Radio Frequency Rack Transmitter is available in either 865MHz or 915MHz (USA/AU) frequencies. It uses internationally approved FM frequencies to transfer clear sound to portable receivers.
- It is designed to provide wireless and amplified assistive listening in large venues from a sound source to compatible RF receivers using FM radio waves.
Applications:
Designed to deliver wireless FM assistive listening in large public venues and for interpretation.
- Lecture Halls
- Auditoriums
- Meeting Rooms
- Conferences
- Places of Worship
What’s in the Box:
- Radio Frequency Stationary Transmitter
- Power Supply Adaptor
- 19” Rack Mount Bracket
- Earth (Ground) Cable for Optional Use
- Fixing Screws
- TNC Rod Antenna
Compatible Accessories
- Portable Radio Frequency Receiver
- Remote Antenna Kit
Physical Data:
|
Dimensions |
Height – 51mm (2”) Width – 215mm (8.46”) Depth – 210mm (8.26”) |
| Weight | 1.25kg (2.75lbs) |
| Finish | Mixed |
Product Code:
| Radio Frequency Rack Transmitter | RF-TXRM-865/915 |
Technical Data:
| Carrier Frequency Range | 865MHz (UK/EU) / 915MHz (USA/AU) (country dependent) |
|
RF Output Power |
Hi: 18 dBm
Mid: 13 dBm (country dependant) Lo: 10dBm |
| Antenna | TNC connector |
| Headphone Output | 200mW @ 32 ohm |
|
Inputs |
Mic in: 3.5mm & 6.3mm Aux in: RCA
Loop in: 6.3mm Incoming Bluetooth™ streaming |
|
Mic/Line Inputs |
Mic Input: -30dBv
Line Input Limits: 10dBv Unbalanced/Balanced connections available |
| XLR Connector | Level= \-30dBv Balanced Connection |
|
Mic-In Connectors |
Mono/Stereo Aux out-Mono Mic Level–30dBv |
|
Connectors |
AUX IN = Audio Source MIC IN = Dynamic Mics PH PWR = Electret Mics |
|
Outputs |
Earmic out: 3.5mm, stereo Aux out RCA
Loop out:6.3mm |
| Wireless Coverage | Approx. 100 meters (line of sight @ Hi-power) |
| Power Requirements | 100 ~ 240 V AC / 12 V DC, 1A switching power |
| Frequency Response | 70Hz – 12kHz |
| Channel | 42 channels are accessible on the 865MHz version. 25 channels are available on the 915MHz version |
| Display | Backlit OLED |
| Software | Smart programming software for fast set-up of multiple receivers |
Front/Rear Panels:
Portable Radio Frequency Transmitter
RF-TX1-865 / RF-TX1-915
- The compact Portable Radio Frequency Transmitter sends signals of speech or music to compatible portable receivers across selectable channels. Two versions respectively work on 865MHz or 915MHz (USA/AU) frequencies.
- The transmission range is up to 100 meters in an open field, and there is no limit to the number of receivers that can be used per group. The transmitter utilizes digital audio transmission technology. A micro-USB power supply provides fast and simple charging and the unit can also be charged using the drop-in RF-DC24 charging case.
Applications:
Ideal for situations where listeners require clear sound for tour guidance or private group interactions.
- Museums
- Historical Sites
- Exhibitions/Events/Conferences
- Outdoor Tours
What’s in the Box:
- Portable Radio Frequency Transmitter
- Lanyard
- Micro-USB Power Cable
- Lapel Microphone
- 2 x AA 1.2V 2100mAh rechargeable (NiMH) batteries
Compatible Accessories
- Portable Radio Frequency Receiver
- 24 Bay Charging Case
- Ear-Worn Microphone
- Discreet Microphone
Technical Data:
| Emission Modulation | 4GFSK |
| Latency | <4 ms@HQ |
| Mic Capsule | Condenser |
| Antenna | Flexible antenna |
|
RF Output |
High: <10 mW for 863~865, 915~928MHz Low: 2~6mW |
| Mic Input | 3-pole Mini XLR |
| Audio input | 3.5mm |
| Batteries | 2 x AA 1.2V 2100mA rechargeable (NiMH) |
| Battery Life | >8 hours |
| Operation Range | >50 meters |
| Frequency Response | 70Hz – 12kHz |
| Channel | 42 channels are accessible on the 865MHz version. 25 channels are available on the 915MHz version |
| Display | White Backlit LCM |
| Channel-lock | Auto-Lock for the selected channel |
| Software | Smart programming software for fast setup of multiple receivers |
Physical Data:
|
Dimensions |
Height – 88mm (3.46”) Width – 64mm (2.51”) Depth – 29mm (1.14”) |
| Weight | 113.5g (0.25lbs) |
| Finish | Mixed |
Product Code:
| Portable Radio Frequency Transmitter | RF-TX1-865/915 |
Portable Radio Frequency Handheld Transmitter
RF-TXHH-865/ RF-TXHH-915
- This hand-held microphone has an integrated multi-frequency transmitter and UHF technology. It is for use with Portable Radio Frequency Receivers, with two versions available that respectively work on 865MHz or 915MHz (USA/AU) frequencies.
- This microphone transmits sound wirelessly and directly to groups of receivers programmed on the same channel, making it ideal for use in lectures, events, and educational venues.
Applications:
Ideal for use in education venues or when a speaker addresses a group of people directly.
- Museums
- Educational Venues
- Community Centres
- Lecture Halls
- Entertainment Venues
What’s in the Box:
- Portable Radio Frequency Handheld Transmitter
- 2 x AA Alkaline batteries
Compatible Accessories:
- Portable Radio Frequency Receiver
- Micro-USB Power Cable [USB-M100]
Technical Data:
| Emission Modulation | 4GFSK |
| Latency | <4 ms@HQ |
| Mic Capsule | Dynamic |
| Antenna | Flexible antenna |
|
RF Output |
High: <10 mW
Low: <1 mW |
| Battery | 2 x AA alkaline / rechargeable NiMH battery (rechargeable batteries not supplied, alkaline included) |
| Battery Life | >8 hours |
| Operation Range | >50 meters |
| Connectors | Micro-USB charge port |
| Channel | 42 channels are accessible on the 865MHz version. 25 channels are available on the 915MHz version |
Physical Data:
|
Dimensions |
Diameter – 49mm (1.9”) Height – 258mm (10.1”) |
| Weight | 270.5g (0.59lbs) |
| Finish | Grey |
Product Code:
| Portable RF Handheld Transmitter | RF-TXHH-865/915 |
Receivers
Portable Radio Frequency Receiver
RF-RX1-865 / RF-RX1-915
- A lightweight Portable Receiver is compatible with all Contacta RF-865/915 transmitters. The wide frequency bandwidth of this system makes it ideal for the transmission of both speech and music, delivering crystal-clear intelligible sound.
- The system offers fast programming of up to 42 selectable channels and there is no limit to the number of receivers that can be used in each group. The receiver can be used for either assistive listening or tour guide applications.
- Recharging the RF-RX1 is quick and easy using the RF-DC24 drop-in charging case.
- We offer two versions that respectively work on 865MHz (UK/EU) or 915MHz (US/AUS) frequencies.
Applications:
Ideal for assistive listening, tour guidance, or interpretation.
- Museums
- Historical Sites
- Exhibitions/Events/Conferences
- Outdoor Tours
- Assistive Listening
What’s in the Box:
- Portable Radio Frequency Receiver
- Lanyard
- Micro-USB Power Cable
- Earphones
- 2 x AA 1.2V 2100mAh Rechargeable Batteries
Compatible Accessories
- Portable Radio Frequency Transmitter
- Stationary Radio Frequency Transmitter
- Portable Radio Frequency Handheld Transmitter
- 24 Bay Charging Case
- Inductive Neck Loop
- Headphones
Technical Data:
| Emission Modulation | 4GFSK |
| Antenna | Flexible antenna |
| Headphone Output | 3.5mm |
| Line Output | 3.5mm |
| Batteries | 2 x AA 1.2V 2100mAh rechargeable (NiMH) |
| Battery Life | >10 hours |
| Frequency Response | 70 Hz – 12kHz |
| Channel | 42 channels are accessible on the 865MHz version. 25 channels are available on the 915MHz version |
| Display | White Backlit LCM |
| Channel Lock | Auto-Lock for the selected channel |
| Software | Smart programming software for fast setup of multiple receivers |
Physical Data:
|
Dimensions |
Height – 88mm (3.46”) Width – 64mm (2.51”) Depth – 29mm (1.14”) |
| Weight | 109.5g (0.24lbs) |
| Finish | Mixed |
Product Code:
| Portable Radio Frequency Receiver | RF-RX1-865 / 915 |
Microphones
Ear-worn microphone for use with RF-TX1
RF-TX1-EM
This ear-worn microphone is compatible with the Portable Radio Frequency Transmitter [RF-TX1-865/915]. It comes with a 1.2m cable and mini-XLR connector. Enables hands-free communication with clear sound using a high-quality Condenser microphone capsule.
Applications:
Ideal for tour guidance or private group interactions.
- Museums
- Historical Sites
- Exhibitions/Events/Conferences
- Outdoor Tours
Physical Data:
|
Dimensions |
Height – 60mm (2.3”) Width – 32mm (1.25”) Depth – 160mm (6.2”) Lead Length – 1.2m (47.2”) |
| Weight | 10.5g (0.02lbs) |
| Finish | Beige |
Technical Data:
| Connector | Mini-XLR |
| Power Supply | 1 ~ 10V / DC phantom voltage |
| Transducer Type | Condenser capsule |
| Polar Pattern | Unidirectional |
|
Sensitivity |
-47 ± 3 dB @f = 1 kHz, S.P.L = 1Pa,
0 dB=1V / 1pa -67 ± 3 (0dB = 1 V/microbar) |
| Frequency Response | 70 – 16kHz |
Product Code:
| Ear-Worn Microphone | RF-TX1-EM |
Lapel Microphone for use with RF-TX1
RF-TX1-LM
This lapel microphone is compatible with the Portable Radio Frequency Transmitter. It includes a tie clip and a 1m cable with a mini-XLR connector. It enables hands-free communication with clear sound using a high-quality Condenser microphone capsule.
Applications:
Ideal for tour guidance or private group interactions.
- Museums
- Historical Sites
- Exhibitions/Events/Conferences
- Outdoor Tours
Physical Data:
|
Dimensions |
Mic:
Height – 11.4mm (0.44”) Width – 11.4mm (0.44”) Depth – 24.7mm (0.97”) without clip
Clip: Height – 6.5mm (0.25”) Width – 44.2mm (17.4”) [40.5mm (1.59”) without clip]
Lead Length – 1000mm (39.3”) |
| Weight | 24g (0.05lbs) with clip |
| Finish | Black |
Technical Data:
| Connector | Mini-XLR |
| Power Supply | 1 ~ 5V / DC phantom voltage |
| Transducer Type | Condenser capsule |
| Polar Pattern | Unidirectional |
| Sensitivity | -50 ± 3 dB @f =1 kHz, S.P.L=1 Pa,
0 dB=1V / Pa |
| Frequency Response | 180 Hz – 17kHz |
Product Code:
| Lapel Microphone | RF-TX1-LM |
Discreet Headset Microphone
RF-HM
This microphone is compatible with the RF-TX1 Portable Radio Frequency Transmitter. Its unique design offers improved comfort for long-term use. The two ear hooks and its rear-head frame make it comfortable and lightweight, assisting in effortless hands-free communication, using a high-quality Condensor microphone Capsule.
Physical Data:
|
Dimensions |
Capsule Housing Diameter – 5mm (0.19”) Capsule Housing Length – 6mm (0.23”) Boom length – 110mm (4.33”)
Lead Length – 1300mm (51.18”) Lead Diameter – 1.5mm (0.05”) |
| Weight | 30 ± 5g (0.06lbs ± 0.01lbs) |
| Finish | Black |
Technical Data:
| Connector | Mini-XLR |
| Power Supply | 1 ~ 10V / DC |
| Polar pattern | Unidirectional |
| Impedance | 1,200 W ± 30% (at 1k Hz) |
| Sensitivity | -70 ± 3 dB (0 dB=1V / microbar) |
| Frequency Response | 70 ~ 16k Hz |
Product Code:
| Discreet Headset Microphone | RF-HM |
Listening Options
Headphones
RF-HP1
Overhead headphones compatible with the RF-RX1 Portable Radio Frequency Receiver. It has a standard 3.5mm audio jack and a 1m lead.
Physical Data:
|
Dimensions |
Height – 175mm (6.80”) Width – 150mm (5.09”) Depth – 15mm (0.59”)
Lead Length – 2 metres (78.7”) |
| Weight | 48g (0.10lbs) |
| Finish | Black |
Technical Data:
| Impedance | 32W |
| Frequency Response | 20-20000Hz |
| Sensitivity | 104dB |
| Connection | 3.5mm audio plug |
Product Code:
| In-Ear Headphones | RF-HP1 |
Inductive Neck Loop
RF-NL1
The Inductive Neck Loop is a compact listening device compatible with our RF-RX1 Portable Radio Frequency Receiver. When connected to the receiver, the RF-NL1 will produce a magnetic field that lets users with Telecoil-enabled hearing instruments receive the sound directly in their hearing aids.
Physical Data:
|
Dimensions |
Loop Cable Length – 800mm (31.5”) Loop Cable Diameter – 4mm (0.15”)
Cord Cable Length – 450mm (17.7”) Cord Cable Diameter – 3mm (0.12”) |
| Weight | 57g (0.12lbs) |
| Finish | Black |
Technical Data:
| Connector | 3.5mm plug (stereo) |
| Input Power | 250mW |
Product Code:
| Inductive Neck Loop | RF-NL1 |
Charging Equipment
24-Bay Charging Case for Portable Receiver/Transmitter
RF-DC24
- This charging case is for use with the Portable RF Transmitter and Portable RF Receiver and can hold up to 24 devices in an upright position. The case is portable and charging is a simple drop-in connection.
- The built-in digital panel enables fast and easy programming of multiple devices, including data-copy and channel-sync for compatible transmitters and receivers. This allows fast setup from a master device.
Applications:
Ideal for situations where listeners require clear sound, tour guidance, or interpretation.
- Museums
- Historical Sites
- Exhibitions/Events/Conferences
- Outdoor Tours
- Assistive Listening
What’s in the Box:
- 24-Bay Charging Case for RF Receiver/Transmitter
- Power Supply Unit
- USB Drive with PC Programming Software
Technical Data:
| Charging Pockets | 24 |
| Charging Current | 350 ± SO mA, per pocket |
| Charging Time | 4 ~ 6 hours @ 2100 mAh NiMH rechargeable batteries |
| Charging Algorithm | PWM control, -/’iV, and TIMER power-off detector |
| Power Requirements | AC100 ~ 240 V switching power adapter (50/60Hz), DC12 V, 5A |
| Ambient Temperature | 0C ~ 40C (32F-104F) |
Physical Data:
|
Dimensions |
Height – 437mm (17.2”) Width – 266mm (10.4”) Depth – 170mm (6.6”) |
| Weight | 4.69kg (10.3lbs) |
| Finish | Mixed (Silver/Black) |
| Construction | High-grade metallic protective case with inner padding |
Product Code:
| 24 Bay Charging Case | RF-DC-24 |
Accessories and Spare Parts
Accessories
Remote Antenna Kit for Stationary Transmitter
RF-TXRA
- The Remote Antenna Kit is for use with the Radio Frequency Stationary Transmitter RF-TXRM.
- This kit allows secured repositioning of the TNC antenna at the front of an Audio Rack, for improved signal strength.
Physical Data:
|
Dimensions |
Long Ear
Length – 241 mm (9.5”) Height – 44 mm (1.7”) Width – 40 mm (1.6”)
Short Ear Length – 26 mm (1.02”) Height – 44 mm (1.7”) Width – 40 mm (1.6”) Steel Plate Depth – 1.6 mm (0.06”) Lead Length – 1500 mm (59”) |
| Weight | 295g (0.65lbs) |
Technical Data:
| Material of short/long ear | Steel plate with coating |
| Connector of lead | TNC (male), TNC (female) |
Product Code:
| Remote Antenna Kit | RF-TXRA |
In-Ear Headphones
RF-IEH
The In-Ear Headphones are compatible with the Portable Radio Frequency Receiver. It has a standard 3.5mm audio jack and a 1m lead.
Physical Data:
|
Dimensions |
Cable
Length – 1050mm (41.3”) Diameter – 1mm (0.04”)
Earbuds Height – 30mm (1.18”) Depth – 15mm (0.59”) Width – 18mm (0.71“) |
| Weight | 10.5g (0.02lbs) |
| Finish | Black |
Technical Data:
| Jack | 3.5mm (3 pins) |
| Power Rating | 2 mW |
| Impedance | 32W |
| Maximum Input Power | 8 mW |
| Output S.P.L. | 100 ± 5dB SPL (0db=20 μPa) at 1KHz
with Vrms input=178 mV |
| Frequency Response | 10~10,000Hz |
Product Code:
| In-Ear Headphones | RF-IEH |
Rechargeable Battery
RF-BATT-AA
1.2V 2100mAh AA rechargeable (NiMH) battery for use with the Portable RF Transmitter and Portable RF Receiver.
Physical Data:
|
Dimensions |
Length – 50mm (1.9”) Depth –13mm (0.5”) |
| Weight | 27.6g (0.06lbs) |
Technical Data:
| Chemical system | NiMH |
| Voltage | 1.2 V |
| Capacity | 2100mAh |
Product Code:
| Rechargeable Battery | RF-BATT-AA |
Additional Spare Parts:
| Single Rechargeable Battery 2100mAh for RF-TX1/RX1 | RF-BATT-AA |
| Belt Clip for RF-TX1/RX1 | RF-CLIP |
| Lanyard for RF-TX1/RX1 | RF-LAN |
| Micro USB Cable for RF-TX1/RX1/TXHH | USB-M100 |
| 2-Port USB Plug | PLUG-USB-UK-2 |
| 4-Port USB Plug | PLUG-USB-UK-4 |
Contact Information
Contact us now on
- +44 (0) 1732 223900
- sales@contacta.co.uk
- +44 (0) 1732 223909
- Contacta Systems Ltd
Office 13, Dana Estate Transfesa Road Paddock Wood, Kent TN12 6UT United Kingdom - www.contacta.co.uk.
Documents / Resources
 |
contacta RF-HM Radio Frequency Systems [pdf] User Guide RF-HM Radio Frequency Systems, Radio Frequency Systems, Frequency Systems, Systems |
