These cellular extenders (that I am familiar with) were a simple way to
put a broadband "antenna" at a remote location and have it behave as if it
was connected by coax. One sector antenna of a cell site could be
allocated to the remote location and all the control and system interface
wasn't complicated in any way -- except for accounting for the coverage area
(which was usually a RF hole needing coverage).
With the amount of equipment required to do it right (modulate the RF onto
the fiber and demodulate it and amplify it back to the required level), it
would be just as easy for a ham to simply put the rig at the remote location
and send control and audio up the fiber -- if he really wanted the
advantages of fiber.
There are fiber boxes that do this for a fraction of the cost of the
"RF" type --- they have audio and digital interfaces. If you can do it on
the Internet, fiber is simple as well.

73, Steve, K9DCI





"Bob Bob" wrote in message
...
Hi Marco

Yes but its more of use in a commercial/military than amateur radio
environment.

I remember that certain cellular site installs I was involved in ran
fiber from a the "main" RF TX/RX device to a remote location. The remote
location simply had a broadband amplifier for the separate TX and RX.
This was used in an underground railway station going out to maybe 3-4
locations. It was more cost effective doing it this way than by long
coax runs at 900/1800MHz.

It will be a cost/benefit tradeoff of whatever RF/SMOF/RF interface
device you have to purchase vs the cost of coax vs fiber.

This is something an amateur radio person isnt likely to do for his/her
hobby. I also doubt whether it will be commercially viable for amateur
radio manufacturers to include fiber interfacing.

OBTW you can tap/intercept optical fibre .

Cheers Bob W5/VK2YQA

Marco Licetti wrote:
I am not here to pester about own company - I do NOT work for this but
just
to share experience: