Total posts : 45366
I have had many FM transmitters over the years.
Right now, I only have a few Part 15 FMs here. Some of
my other FM transmitters are in other locations.
Anyway – I use the
Maxell P-13 (certified) to run the computer audio
out to radios that are here. Lately, it’s been
streaming stations of most of you guys. The Maxell
is an odd beast. A little round thing that just plugs
into the computer. 3 AAAs, a blue power-on LED, and
just 4 channels, as mentioned before. 88.1, 88.3, 88.5,
and 88.7. Not easy for me, or anybody – I figure – with
just those 4 channels. Also, it only does about 80 percent
modulation – and the EQ is wrong.
Still for an audio link – man – you can’t beat it. Just
put it in your pocket and go wherever you want.
You can lose it in your pocket.
The P-13 came after the Maxell FMT-1. The FMT-1
had a red power LED, and a very small antenna wire
in the battery compartment. I’ve never seen an FMT-1,
but I think the wire could hang out the bottom of that
transmitter. So when Maxell went from the FMT-1 to the
P-13 (why do they call it a P-13) they changed the color
of the LED, and got rid of the little antenna wire. Otherwise,
all is the same.
I’m very happy with my Maxell P-13. It is what it is.
OOOps. The batteries ran down again. Back to the
The only other transmitter I have here is a Whole House
1.0 circuit board that came from E-bay for about 9 dollars.
It seems to be the right field strength, but if you put the
transmitting antenna next to the board you get RF feedback.
Other than that it appears to be clean RF wise, but I don’t
use it much. It needs to go into a shielded case, and needs
some other things to make it practical.
Now to my real question – the Sainsonic FM transmitter. That
sure looks like an FCC certification number. The Sainsonic can
do 500 miliwatts and can go out of band down to 76 MHz.
However, as we know, the Whole House FM transmitter can
do the BETS field strength. Also one of our members has
an FCC certified Part 15 transmitter that can also do 87.5,
87.7, and 87.9. (I forgot the manufacturer and model number,
but if you told me it- I’d hit myself over the head and say,
“Oh – right!”)
I’ve heard that some of the clones of the Sainsonic had
problems with unwanted RF products outside the desired
operating channel. Several manufacturers seen to market
this thing – they all look the same – but are under different
names. So the Sainsonic is the only one out of the bunch
that passed certification? Was it a mistake? Back many
years ago, the FCC certified some kind of AM “Real Estate”
transmitter that was too strong. I want to know more about
the Sainsonic. I need something with more than 4 channels,
and is in a good strong enclosure, and is NEW. Mono would be
great, but I don’t know if the Sainsonic does mono. In the
$54.00 price range, this is less expensive than many other
Part 15 certified FM transmitters that we KNOW AND TRUST on
a technical level. But is the Sainsonic really any good???
Does anybody with the ability to see if it is “clean RF wise” have one?
Is the certification a mistake?
If I was rich I would just get one to check.