Any one every heard of this one I found on wallmart but it it sales other places it says it gos 300 feet
Looks like a better quality one similar to the Ccrane but probably if it claims 300ft it's around the max you can go with part 15, maybe a tad more. Seems to also have only 4 frequency choices? Not too good if that's all. Haven't seen this before though. Check if only 4 frequency choices are available...if so don't get it. If those choices have stations it's usless.
Oh wait a minute!!.....looked closer and this is not an FM transmitter as I thought it was.
It's just a "toy" that works on some other frequencies like a walky talky.
In fact it works with a certain model of headphones.
I thought the 72 MHz operating
frequencies this unit has were
used with wireless headphones
as an aid for the hearing imparred. (sp?)
In other words - - these set-ups were or
are for use in auditoriums for people who
can't hear well.
???? Anyway... if this sort of thing worked
well - I would prefer it to bluetooth headphones -
which don't go very far.
Brooce
I thought the 72 MHz operating
frequencies this unit has were
used with wireless headphones
as an aid for the hearing imparred. (sp?)
In other words - - these set-ups were or
are for use in auditoriums for people who
can't hear well.
???? Anyway... if this sort of thing worked
well - I would prefer it to bluetooth headphones -
which don't go very far.
Brooce
Sorry about the duplicate.
Hi Brooce... By putting your first post on the left and your second post on the right I got perfect stereo!
In Russia the FM band goes from 64 to 108 MHz, a band that can be heard on TECSUN radios, and these portables have FM stereo on the headphone jacks.
Brooce is also right about the Assisted Hearing Band which is authorized under new Part 15 rules on white-space devices, but the transmitter linked at the beginning of the thread does not mention certification, which would be required.
There are also licensed auxiliary transmitters allowed in this spectrum under either Part 73 or Part 74.
72 MHz is an interesting place.
I have monitored in that part of
the spectrum. I have heard at
least one data transmission
(format unknown) riding on an FM
carrier, if I'm correct. I stumbled
upon that while looking for HDTV
"digital" carriers during an E-skip opening
a few years ago. There is also a ham
radio band there. Although not permitted in the U.S. and Canada
and ALL of ITU region 2, I guess...
??? Is that North and South
America??? Well. Be that
as it may... Some European countries
are lucky enough to have the 70.7 MHz
ham band. I'll have to look it up and see
how wide the band is (or isn't.)
I think it's a small allocation.
- - We don't hear much about
70.7. There ARE U.S. hams that
listen there for far away signals.
At least one intrepid U.S. ham has
an experimental license to transmit there. It is probably a beacon. I can't
remember the whole callsign.
WD2X?? is all I can remember.
Also I think the 75 MHz band is
allocated for radio controlled models.
I don't remember much about that.
Best Wishes
Brooce