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Samson AIRLINE 77 Aerobics System AH1/QE/CR77

Product Code SASW7AVSCEK-E1
Manufacturer Samson

Buy this from the A.C. Audio Online Store. Request more information or contact us now for purchasing information.


The AirLine 77 UHF Headset System offers a true wireless experience with no beltpacks and no cables, allowing complete freedom of mobility. The system includes the AH1 headset transmitter, along with the CR77 receiver.

The AirLine headset transmitters feature the Samson Qe Fitness and QV10e Vocal microphone elements. The Qe and QV10e headsets were designed to go around the back of your head rather than over the top. This allows the transmitter to be attached directly to the headband, out of the way and completely unobtrusive, while being comfortable and secure during performances or group fitness classes.

Both the Qe and the QV10e are designed with unidirectional microphones and cardioid pickup patterns that reject feedback. The Qe Fitness headset is ideal for group fitness instructors who need a durable headset that will remain in place despite repetitious movement. The QV10e Vocal headset has a microphone element that's perfect for singers who need hands free performance. Both transmitters offer 14 hours of operation on a single AAA battery.

The core of the receiver system is the CR77 true-diversity half-rack UHF receiver. It's deisgned to work flawlessly with AirLine UHF transmitters. Featuring dual tuned, molded antennea, a front panel display with large multi-segment audio level and RF level LED meters, and a large rotary volume knob that allows easy adjustment of audio output, the CR77 takes all of the guesswork out making your wireless system perform. Its synthesized PLL frequency control circuitry keeps the signal locked and true while the LED meters monitor the system's operation. The rear panel features balanced XLR and unbalanced 1/4-inch outputs allowing flexible connection options. In addition, two CR77 receivers can be rackmounted together in a single space rack adapter available as an added accessory.

With AirLine Wireless, you get complete wireless freedom that's good to go anywhere the music takes you.

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XLR and unbalanced 1/4-inch outputs with mic/line level output switch
Headset transmitter features power/battery LED, power switch and mute switch
Headset condenser mic is sweat resistant and employs unidirectional cardioid pickup pattern for great sound
True diversity UHF wireless headset system with PLL frequency control
CR77 receiver features multi-segment audio level and RF level LED meters
Squelch and volume control
AC adapter and 1/4-inch to 1/4-inch cable included

Frequency Information


 Information Resource and FAQ's - Wireless Microphone Frequency Guide

There have been many questions surrounding the 2012 digital switchover and its effect on Wireless Microphone Frequencies across the UK. To help clarify some frequently asked questions, A.C. Audio have put together a source of reference with the current plans from Ofcom.

If you have any queries about these upcoming implementations, we are on hand to discuss your individual circumstances and will be a source of unbiased advice. As a distributor for all major wireless equipment brands, we will endeavour to advise the best course of action that will ensure minimal disruption during the digital switchover.

Which frequency ranges have been affected?

Frequencies 854-862 MHz (TV channel 69) has been allocated elsewhere, making the use of radio mics and wireless systems illegal to use on this frequency.

Which frequency range is free to run wireless systems on?

Frequency band 863-865 MHz (Channel 70) is deregulated and does not require a license. If you plan on running more than four wireless systems at one time it’s recommended you use frequency band 606-614 MHz (Channel 38) which will require a license.

Are there any other possible frequency bands?

470-550 MHz (TV channels 21 to 30) and 614-790 MHz (TV channels 39 to 60) will be available for wireless microphones on a secondary use with Digital Terrestrial Television (DTT) and on a license basis (called: "interleaved spectrum: spectrum between TV transmitters that cover only regions").

The VHF band 174-216 is not yet affected by the Digital Dividend, and there is some interleaved VHF spectrum availability. There are three frequencies within the VHF that can be used license free - 173,800 MHz, 174,500 MHz and 175.000 MHz.

Because the new IMT services use an up and down link and these need to be separated to overcome interference, the band 790-862 MHz will be split in 2 parts of 30 MHz. In the middle will be a "Duplex Centre Gap" running from 821-832 MHz. There is a possibility that this gap will become available for wireless microphones in the future. However, with current technology and the noise created in this band by the IMT service, we would question its suitability for wireless microphones at this time. It is anticipated that only 3-4 MHz in the middle of the gap will be usable. This band is under investigation on European and national levels.

In the 1.8GHz band (1785-1800 MHz) Ofcom grants access for digital wireless microphones only. This frequency range is not really suited for wireless microphones, as the higher frequencies (i.e. shorter wavelengths) create more body absorption and shadow effects due to the directivity, etc. The use of these frequencies will only work adequately when there is a line of sight and a short distance between the transmitter and the receiver.

How about licenses and license fees?

The Joint Frequency Management Group (JFMG) is the UK's band manager for the Program Making and Special Events (PMSE) industry. For further licensing details please contact JFMG atwww.jfmg.co.uk.

Is it possible to modify current wireless microphones to other frequency ranges?

Yes in many instances, but this is dependant on the make and model and in some circumstances it may be more economical to purchase a new system.

Does Ofcom compensate equipment becoming redundant as a result of these plans?

Yes, some funding is available to cover the movement of equipment out of TV channel 69 towards TV channel 38. On August 14, 2009 Ofcom published a consultation document on eligibility criteria, we recommend users to read this consultationwww.ofcom.org.uk/consult/condocs/pmse_funding/.

Where can I find more detailed information on available frequencies?

Please contact A.C. Audio for more information or alternatively the British Entertainment Industry Radio Group (BEIRG) provides a lot of information and makes a great effort to preserve the spectrum for our industry. See www.beirg.co.uk.

Find more helpful information on the JFMG website www.jfmg.co.uk and regular updates from www.ofcom.co.uk.

How do I obtain a frequency plan for an available spectrum?

Also JFMG can provide frequency plans: www.jfmg.co.uk/pages/freq/freq.htm.

Equipment available to buy from this site is for professional use only. Please note in certain countries some products listed may not be available from A.C. Entertainment Technologies Ltd.

E&OE. Information is subject to change without notice. The rights and ownership of all trademarks are recognised.