The NewsHour Goes High Definition

Very rarely does the NewsHour utilize wireless systems due to the interference and disruption of the signal the devices may experience.

We do use some wireless equipment occasionally in the studio and on location. All of the mics on the set are hardwired because of the danger of interference. For instance, if anyone in the studio has a Blackberry device turned on, it injects interference into the mics. Fortunately, its sound is very characteristic and therefore it is easily identifiable. Our purchases take a number of things into account, including pending legislation. I suspect frequency allocations for analog devices will not disappear completely for some time. They will surely become less broad in spectrum and older devices might have to be modified to shift their operating frequency, but there has traditionally been an adequate grandfathering out period for older equipment.

In answer to your final question, I suspect you are currently and exclusively using digital wireless devices. I don't think analog devices have been sold in the U.S. for several years.