Where can I get a proper FM transmitter?

[Wing Fong Wong]

Phil Allison <philallison@tpg.com.au> wrote:

** The penalties for using (or possesing for use ) such a Tx with no
licence are very severe:

" RADIOCOMMUNICATIONS ACT 1992 - SECT 46
Unlicensed operation of radiocommunications devices
(1)
Subject to section 49, a person must not operate a radiocommunications
device otherwise than as authorised by:

(a)
a spectrum licence; or
(b)
an apparatus licence; or
(c)
a class licence.
Penalty:

(a)
if the radiocommunications device is a radiocommunications
transmitter:
(i)
if the offender is an individual?imprisonment for 2 years; or
(ii)
otherwise?1,500 penalty units; or
(b)
if the radiocommunications device is not a radiocommunications
transmitter?20 penalty units.
(2)
Subsection (1) does not apply if the person has a reasonable excuse.

Note: A defendant bears an evidential burden in relation to the matter
in subsection (2) (see subsection 13.3(3) of the Criminal Code ). "






........ Phil

I was just wondering and this is off topic and some might even cosider
this a stupid question, but are there any corresponding restriction on
recievers? I was once told that I shouldn't bother buying any radios from
overseas cos I can't use it here, I took it to mean not permitted to use
them here. Just wondering.

--

Wing Wong.
Webpage: http://wing.ucc.asn.au

 

[Newsy]

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:chr78v$jmb$2@bunyip.cc.uq.edu.au...

Newsy <rlg000atyahoo.com> wrote:
After reading all the earlier posts I have to ask if you haqve considered
supplementing the existing IR
radiator with a second to increase coverage?

it did cross my mind, but i was hoping to move away from IR as the
receivers are about $80-90 each. With an FM system, cheap radios can
be used. the IR transmitter itself isnt really cheap either.

What about the rest of the gear to make the signal sound "nice"?
You can put a direct signal through an FM transmitter, but the way signal
levels differ between speakers means that some level of compression/limiting
(to stop overmodulation) and AGC (to make soft sounds loud enough) is
desirable to ensure the signal can always be heard.
What is the audio signal source?
People talking, music?
Do you have a PA system installed?
What is the brand of the original IR transmitter and receivers?
Why are you trying to supplement the audio in the room?
Do you have deaf people attending (they may have T switches on their hearing
aids, so a loop system may be more appropriate)
Do you give out the IR receivers at the start of a meeting, or do people
bring their own?
If the hall is large you may consider telling people to sit in a certain
location to receive the IR feed, and then relocate the existing trnsmitter
to this location - cheaper than supplementing or changing the system.
You could also provide a small loop over a small section as well. Proper
current drive loop amplifiers can be purtchased for $500. However, they can
be affected by steel/reo in the concrete floor and other metal.
Do you by law have to provide a system for hearing impaired? ie. Are you
legally compelled to provide a solution? If so, then don't bother trying to
do it on the cheap.

Rod

thanks




Rod

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:ch8bld$11$1@bunyip.cc.uq.edu.au...
hi,

Does anyone know where I can get a proper FM transmitter? The only
one I've found is by Fordray, but it's a but pricey at $680. i'm
hoping to find one for around the $300-$450 mark. Range isn't very
important, it just needs to cover a hall that seats 600 people for
a translation system. Stability and clarity is important though.

This is the link to the fordray one:
http://www.fordray.com.au/Products/FMT2-10/fmt2-10.html

Perfect, but a bit over budget.


thanks

 

[Bill Bailley]

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:chr78v$jmb$2@bunyip.cc.uq.edu.au...

Newsy <rlg000atyahoo.com> wrote:
After reading all the earlier posts I have to ask if you haqve considered
supplementing the existing IR
radiator with a second to increase coverage?

it did cross my mind, but i was hoping to move away from IR as the
receivers are about $80-90 each. With an FM system, cheap radios can
be used. the IR transmitter itself isnt really cheap either.


thanks

If you had any real drive to see this through, you could have easily tested
both the boosted infra red solution, AND the Jaycar PLL TX by now. No more
whiffling and waffling. Use some real initiative and DO something!

Bill.

The ones that can, do.

The ones that can't, teach.

 

[Ken Taylor]

"Bill Bailley" <JustMe@Home> wrote in message
news:4141a6c6$0$2193$afc38c87@news.optusnet.com.au...

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:chr78v$jmb$2@bunyip.cc.uq.edu.au...
Newsy <rlg000atyahoo.com> wrote:
After reading all the earlier posts I have to ask if you haqve
considered
supplementing the existing IR
radiator with a second to increase coverage?

it did cross my mind, but i was hoping to move away from IR as the
receivers are about $80-90 each. With an FM system, cheap radios can
be used. the IR transmitter itself isnt really cheap either.


thanks




If you had any real drive to see this through, you could have easily
tested
both the boosted infra red solution, AND the Jaycar PLL TX by now. No more
whiffling and waffling. Use some real initiative and DO something!

Bill.

The ones that can, do.

The ones that can't, teach.

Those that can't teach, manage.

Ken

 

[eug k]

Bill Bailley <JustMe@home> wrote:

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:chr78v$jmb$2@bunyip.cc.uq.edu.au...
Newsy <rlg000atyahoo.com> wrote:
After reading all the earlier posts I have to ask if you haqve considered
supplementing the existing IR
radiator with a second to increase coverage?

it did cross my mind, but i was hoping to move away from IR as the
receivers are about $80-90 each. With an FM system, cheap radios can
be used. the IR transmitter itself isnt really cheap either.

If you had any real drive to see this through, you could have easily tested
both the boosted infra red solution, AND the Jaycar PLL TX by now. No more
whiffling and waffling. Use some real initiative and DO something!

I would if I had the time! The first thing i'm going to try is the jaycar
PLL tx, as it's way cheaper than all the other solutions. There's no
big rush to get it running, so I'll give it a go as soon as i have spare
time.

A boosted IR solution? As in, a bigger IR tx? that'd cost quite a bit and
we'd still have to use the more-expensive IR receivers.

 

[eug k]

Ken Taylor <ken123@xtra.co.nz> wrote:

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:chr78v$jmb$2@bunyip.cc.uq.edu.au...
Newsy <rlg000atyahoo.com> wrote:
After reading all the earlier posts I have to ask if you haqve
considered
supplementing the existing IR
radiator with a second to increase coverage?

it did cross my mind, but i was hoping to move away from IR as the
receivers are about $80-90 each. With an FM system, cheap radios can
be used. the IR transmitter itself isnt really cheap either.

So you can use the more expensive system with the cheap receivers, or the
(relatively) cheap system with the expensive receivers. See a correlation?

if they jaycar fm tx works, it'll be a cheap system with cheap receivers.

 

[eug k]

Newsy <rlg000atyahoo.com> wrote:

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:chr78v$jmb$2@bunyip.cc.uq.edu.au...
Newsy <rlg000atyahoo.com> wrote:
After reading all the earlier posts I have to ask if you haqve considered
supplementing the existing IR
radiator with a second to increase coverage?

it did cross my mind, but i was hoping to move away from IR as the
receivers are about $80-90 each. With an FM system, cheap radios can
be used. the IR transmitter itself isnt really cheap either.

What about the rest of the gear to make the signal sound "nice"?
You can put a direct signal through an FM transmitter, but the way signal
levels differ between speakers means that some level of compression/limiting
(to stop overmodulation) and AGC (to make soft sounds loud enough) is
desirable to ensure the signal can always be heard.
What is the audio signal source?
People talking, music
Do you have a PA system installed?

it will be mainly one person talking - the translator. a possible future use
would have included being a cheap in-ear monitor, but that really depends
on how it performs. i'm hoping the jaycar tx works well, as that means we
can have several channels for really cheap! Range in this case won't be too
crucial as it would just have to cover the stage. I wonder if there will be
interference issues if i run 2 or 3 of them close together...

for the translator, since the voice will be pretty constant, an agc/compressor/
limiter probably isn't necessary.

What is the brand of the original IR transmitter and receivers?

From memory, the receivers are Arkon. The transmitter's a bit high up for
me to see. I didn't put the system in, otherwise i'd probably remember better.

Why are you trying to supplement the audio in the room?

not exactly supplementing, it's for a simultaneous translation.

Do you have deaf people attending (they may have T switches on their hearing
aids, so a loop system may be more appropriate)

As far as I know, only 2, and they seem happy. They don't need translations
anyway.

Do you give out the IR receivers at the start of a meeting, or do people
bring their own?

near the start - i can't imagine people buying the receivers, unless they
used it everyday.

If the hall is large you may consider telling people to sit in a certain
location to receive the IR feed, and then relocate the existing trnsmitter
to this location - cheaper than supplementing or changing the system.

That was the original idea - then we realized that people love coming late!
By that time, the only free seats are not in the IR area. at the moment we
just ask them to try and find a seat in the IR area, but sometimes it's not
practical as they might want to sit with their friends/family.

You could also provide a small loop over a small section as well. Proper
current drive loop amplifiers can be purtchased for $500. However, they can
be affected by steel/reo in the concrete floor and other metal.

i've read posts about really cheap ways to do it - run a wire loop around the hall
twice, stick on a properly-rated resistor to bring up the impedance to something
close to a speaker, and hook it up to a decent amp. Sounded too good to be true,
but apparently it works! the only drawback was the expensive receivers for
those without t-coil hearing aids.

Do you by law have to provide a system for hearing impaired? ie. Are you
legally compelled to provide a solution? If so, then don't bother trying to
do it on the cheap.

No idea, but probably not, as they would have put it in already if they had
to. At the moment, almost no one would use it anyway.

Rod

"eug k" <wired_au@change-this-to-ho.tmail.com> wrote in message
news:ch8bld$11$1@bunyip.cc.uq.edu.au...
hi,

Does anyone know where I can get a proper FM transmitter? The only
one I've found is by Fordray, but it's a but pricey at $680. i'm
hoping to find one for around the $300-$450 mark. Range isn't very
important, it just needs to cover a hall that seats 600 people for
a translation system. Stability and clarity is important though.

This is the link to the fordray one:
http://www.fordray.com.au/Products/FMT2-10/fmt2-10.html

Perfect, but a bit over budget.


thanks

 

[eug k]

Phil Allison <philallison@tpg.com.au> wrote:

"puke k"..

Wow, I thought name-calling was something that only children did.

** Our Qld uni-puke ( "eug k" @bunyip.cc.uq.edu.au...) has no interest
in
that idea - not when he can get us to help him do something illegal
instead.

have you ever driven at 41km/h in a 40 zone?


** What an imbecile.

So obviously you have driven over the speed limit. If as a result of
that, you hit and killed someone, you could be jailed for quite a while.

It would be impossible to make a secret of it and one phone call to the
authority is all it takes to bring an inspector down.

"Hello, ACA? Someone named puke k is running an illegal transmitter
in a hall somewhere in Queensland. Please send an inspector!"

I really think they have better things to do than spend a lot of money
and resources tracking down an IP address and following it up. They'd
probably be better off going after people running 25W CBs.


I don't know why it's so difficult for you to be courteous, like
everyone else.

Anyway, i'll be trying out the cheap jaycar solution soon. I hope
you don't drive at 41+km/h in a 40 zone, or 61+km/h in a 60 zone.
The penalties for any injuries caused by you doing so are very severe.
YOU WILL BE BREAKING THE LAW IF YOU DO SO.

 

[Phil Allison]

"eug k" = budding criminal

Wow, I thought name-calling was something that only children did.

** I am giving all here a fair waring about YOU !!

It would be impossible to make a secret of it and one phone call to the
authority is all it takes to bring an inspector down.

"Hello, ACA? Someone named puke k is running an illegal transmitter
in a hall somewhere in Queensland. Please send an inspector!"

** NO you cretin - one call from **someone who has been to the venue
and used the set up**.

Anyway, i'll be trying out the cheap jaycar solution soon.

** Probably never be able to buy that 10 watt FM transmitter anyhow.





............ Phil