Hello,
At the UTC show, we discovered that several companies that still had 25
kHz UHF licenses were about to "narrowband" them to 12.5 kHz to satisfy
FCC requirements. There is more to the story than just turning in those
valuable licenses!
TETRA uses a 25 kHz channel, and digitally divides that channel into 4
separate conversations, each 6.25 kHz wide. Thus, a TETRA signal on
your 25 kHz channel qualifies as a narrowbanded emission, and it is
fully legal and compliant with the FCC Narrowband requirement.
With TETRA, your channel will allow 4 separate conversations, depending
on the configuration of the system. Each base station has to have 1 time slot/conversion for administration and texting functions.
The goal of the FCC is to replace older FM-Wideband 25 kHz conversations
with more efficient 12.5 kHz emissions, meaning that the space 1
conversation used to consume will now allow 2 conversations. With
TETRA, you can double that efficiency, with 4 possible conversations
ongoing at the same time. That's quite a deal, when you consider the
cost of filters, repeaters, and antenna space.
So, if you have 25 kHz licenses, and would like to find out more about
TETRA, please give us a call or an email: 920-494-1828 or
tetra@nielsoncom.com
Thanks,
Christian
The FCC views the 4 time slot usage in a 25kHz channel as the equivalent of 6.25kHZ so TETRA is, and will be, compliant for the eventual very narrow band mandate that will undoubtedly be coming down the road. This technology is mature, proven and continuously upgrading.
ReplyDelete