Ofcom has designated the currently used Channel 69 (854-862 MHz) as part of a band that will be re-allocated for new services, and has designated Channel 38 (606-614 MHz) as a replacement. Although the de-regulated / license exempt frequencies in Channel 70 (863-865 MHz) will not change, over the next three years there will be a need for much wireless equipment to be either replaced or converted to use Channel 38.
The current situation with Sennheiser equipment is as follows:Freeport instrument, presentation and vocal sets: There will be no change as these products work in the licence-exempt 863-865 MHz band.
Evolution G1 and G2 Series: Not convertible to Channel 38, but will still be capable of operating on the four pre-programmed frequencies in the licence-exempt 863-865MHz band.
Evolution G3 Series: The G3 series will be convertible and work is currently in progress to produce a new version of G3 that will tune to Channels 38 to 41 inclusive and part of Channel 42. When this is complete, this will enable current G3 systems to be converted for operation on the new lower frequencies, if required.
However, Sennheiser's Range E G3 systems can operate on six frequencies in the license exempt 863-865 MHz band. Historically, this band has only been able to support four radio microphone channels but, as a result of Sennheiser's continuing drive for spectrum efficiency and the revolutionary circuit design of the G3 series, it is now possible to run six radio channels simultaneously in Channel 70.
All the user has to do is enter the six frequencies - 863.100 MHz, 863.400 MHz, 863.750 MHz, 864.225 MHz, 864.550 MHz and 864.975 MHz - into the user bank of the G3 system.
2000 Series: The 2000 Series is already capable of tuning to Channel 38. Available now, the Range GW version covers Channel 38 as well as other frequencies across the 558-626 MHz tuning range - a total of 68 MHz.
3000/5000 Series: The potential for conversion is version and model dependent. Most should be convertible, but users should check with Sennheiser UK's Technical Support Team.
It is not yet possible to specify the exact timings and costs associated with the conversion process. However, Sennheiser UK says it will strive for it to be as cost-effective as possible and will work closely with all the company's customers to plan timescales that are convenient for all parties.
"Whatever the future holds for wireless microphone and in-ear monitor users, we will do all in our power to support and assist our customers," says Phil Massy, Sennheiser UK's general manager.
"Being at the forefront of the professional audio industry, we are fully and actively engaged in the ongoing debate about wireless frequency access and, of course, have a total commitment to manufacturing the best wireless tools which enable our customers to make the most of that access.
"As soon as more information becomes available, we will disseminate it to the industry."
(Jim Evans)
