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Nate Najar Nate Najar is offline
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Default where can i get an FM transmitter?

I was thinking I could get a small fm transmitter to hook up to my
board. Then I can reference a mix on the home stereo and the car
stereo without burning countless cd's. So... where do i get it, who
makes an appropriate one, etc...?

Nate

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Jonathan Roberts Jonathan Roberts is offline
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Default where can i get an FM transmitter?


Nate Najar wrote:

a small fm transmitter


http://www.ccrane.com/radios/fm-tran...ansmitter.aspx

--
"Coloured and animated, the concerts and spectacles are as many
invitations to discover the universes of musicians and artists
who tint with happiness our reality."
To reach me reverse: moc(dot)xobop(at)ggestran
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Scott Dorsey Scott Dorsey is offline
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Default where can i get an FM transmitter?

Nate Najar wrote:
I was thinking I could get a small fm transmitter to hook up to my
board. Then I can reference a mix on the home stereo and the car
stereo without burning countless cd's. So... where do i get it, who
makes an appropriate one, etc...?


Go to Wal-Mart, or any nearby truckstop. Look at the XM Radio and Sirius
displays, for little gadgets intended to send the line output of your
satellite radio to your car radio. I even saw one at Staples the other day.

Hurry now, since a lot of these things flagrantly violate FCC Part 15
regulations and a lot of noncomm stations have been complaining about
interference from them.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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jakdedert jakdedert is offline
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Default where can i get an FM transmitter?

Nate Najar wrote:
I was thinking I could get a small fm transmitter to hook up to my
board. Then I can reference a mix on the home stereo and the car
stereo without burning countless cd's. So... where do i get it, who
makes an appropriate one, etc...?

Nate


Uh...Google?

"Web Results 1 - 10 of about 7,320,000 for "FM transmitter". (0.51
seconds)"

Narrow your search by including other terms.

jak

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Mark Mark is offline
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Default where can i get an FM transmitter?


jakdedert wrote:
Nate Najar wrote:
I was thinking I could get a small fm transmitter to hook up to my
board. Then I can reference a mix on the home stereo and the car
stereo without burning countless cd's. So... where do i get it, who
makes an appropriate one, etc...?

Nate


Uh...Google?

"Web Results 1 - 10 of about 7,320,000 for "FM transmitter". (0.51
seconds)"

Narrow your search by including other terms.

jak


the problem is that the legal ones cannot go very far. the FCC rules
limit the field strength to something like 150uV/meter at 3 feet
(IRRC)

There are plenty of illegal ones to be had however...

If you want it to sound anything like it will sound "on the radio" you
are going to have to compress the S**T out of the audio first.

Mark



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Richard Crowley Richard Crowley is offline
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Default where can i get an FM transmitter?

"Mark" wrote ...
the problem is that the legal ones cannot go very far. the FCC rules
limit the field strength to something like 150uV/meter at 3 feet
(IRRC)


I believe Part 15 specifies the limit of a "10-foot"
antenna, and 100mW of power to the "final".
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William Sommerwerck William Sommerwerck is offline
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Default where can i get an FM transmitter?

I believe Part 15 specifies the limit of a "10-foot"
antenna, and 100mW of power to the "final".


That's for AM (MW).


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Richard Crowley Richard Crowley is offline
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Default where can i get an FM transmitter?

"William Sommerwerck" wrote ...
I believe Part 15 specifies the limit of a "10-foot"
antenna, and 100mW of power to the "final".


That's for AM (MW).


Thats for Part-15 (all modulations including AM and FM)
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Richard Crowley Richard Crowley is offline
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Default where can i get an FM transmitter?

"William Sommerwerck" wrote ...
I believe Part 15 specifies the limit of a "10-foot"
antenna, and 100mW of power to the "final".


That's for AM (MW).


The limits for FM are equivalent, but stated
in terms of radiation levels.
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Default where can i get an FM transmitter?

Nate Najar wrote:
I was thinking I could get a small fm transmitter to hook up to my
board. Then I can reference a mix on the home stereo and the car
stereo without burning countless cd's. So... where do i get it, who
makes an appropriate one, etc...?

Nate


Use a flash memory transmitter such as the Virtual Reality VRFM8:

http://nextpowerusa.stores.yahoo.net/viresolavr3v2.html

$25 ~ $35

Transfer mix wavefiles from computer to flash drive. Plug flash drive
into VRFM8 which in turn plugs into the cigarette lighter in the car.
Tune appropriatly and you are on the FM radio. To get "that FM sound"
though requires something like an Optimod or Aphex processor chain and
then you still have to pick what settings you guess the particular
broadcast station will be abusing your music with. Note, the Orban and
Aphex equipment can be used intelligently for broadcast / musical
benefit but in today's market that often isn't the case.

bobs

Bob Smith
BS Studios
we organize chaos
http://www.bsstudios.com



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Michael R. Kesti Michael R. Kesti is offline
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Default where can i get an FM transmitter?

Nate Najar wrote:

I was thinking I could get a small fm transmitter to hook up to my
board. Then I can reference a mix on the home stereo and the car
stereo without burning countless cd's. So... where do i get it, who
makes an appropriate one, etc...?

Nate


Ramsey Electronics offers several relevant products in kit form.

http://www.ramseyelectronics.com

--
================================================== ======================
Michael Kesti | "And like, one and one don't make
| two, one and one make one."
mrkesti at hotmail dot com | - The Who, Bargain
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Marc Wielage Marc Wielage is offline
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Default where can i get an FM transmitter?

On Jul 23, 2006, Michael R. Kesti commented:

Ramsey Electronics offers several relevant products in kit form.
------------------------------snip------------------------------


And several sellers on eBay will assemble them for a small fee. I see a few
that are modified for higher output, as long as you don't mind running the
risk of an FCC fine.

--MFW



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William Sommerwerck William Sommerwerck is offline
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Default where can i get an FM transmitter?

No it's not equivalent, I had it wrong, its 250 uV/meter
measured at 3 meters. This is a LOT less than the
equivalent field from 100 mW in a 10 foor antenna.


That's pretty weak -- about 60uV to a half-wave antenna. Okay for mono,
marginal for stereo.


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George Gleason George Gleason is offline
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Default where can i get an FM transmitter?


"Richard Crowley" wrote in message
...
"Mark" wrote ...
the problem is that the legal ones cannot go very far. the FCC rules
limit the field strength to something like 150uV/meter at 3 feet
(IRRC)


I believe Part 15 specifies the limit of a "10-foot"
antenna, and 100mW of power to the "final".


I built a Ramsey electronics tunable fm transmitter
it was explained to me that the fcc does not care about "transmitter" power
or antenna design or size
the part 15 is based on measured feild strength at some set distance from
the antenna
I have not used mine sinceI built it out of fear that the fcc will impound
and auction everthing else audio I own saying it was support gear for the 1
watt trasmitter I built(this is within thier rights as well as something
like 25,000$ fine per occourance)
it just became to risky to use
George


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Default where can i get an FM transmitter?

On 23 Jul 2006 08:22:20 -0700, "Mark" wrote:


If you want it to sound anything like it will sound "on the radio" you
are going to have to compress the S**T out of the audio first.

Mark


Not if you're listening to one of my stations :-)

Julian





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On Mon, 24 Jul 2006 00:04:31 GMT, "George Gleason"
wrote:

I built a Ramsey electronics tunable fm transmitter
it was explained to me that the fcc does not care about "transmitter" power
or antenna design or size
the part 15 is based on measured feild strength at some set distance from
the antenna
I have not used mine sinceI built it out of fear that the fcc will impound
and auction everthing else audio I own saying it was support gear for the 1
watt trasmitter I built(this is within thier rights as well as something
like 25,000$ fine per occourance)
it just became to risky to use
George


George,

You worry too much. Go ahead and try it out. Adjust it to where you
think it is supposed to be and you'll probably be legal anyway. The
FCC guys aren't sitting around waiting to bust people like you if you
are a few uV too high!

I talked to a guy who had a small transmitter for his antique radio
shop broadcasting so people in his shop could hear old Burns and Allen
and Jack Benny programs. The FCC received him up and decided he was
over powered and politely helped him re-adjust his transmitter so he
was legal. No fine. The odds of you getting a fine are probably less
than you winning the lottery.

Julian


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On 23 Jul 2006 15:43:42 -0700, "Mark" wrote:

http://www.gate.net/~advradio/fcc.html

Mark


good link

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Bob Cain Bob Cain is offline
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Default where can i get an FM transmitter?

Michael R. Kesti wrote:
Nate Najar wrote:
I was thinking I could get a small fm transmitter to hook up to my
board. Then I can reference a mix on the home stereo and the car
stereo without burning countless cd's. So... where do i get it, who
makes an appropriate one, etc...?

Nate


Ramsey Electronics offers several relevant products in kit form.

http://www.ramseyelectronics.com


*Very* cool! Anybody else got links to kit sites?


Bob
--

"Things should be described as simply as possible, but no simpler."

A. Einstein
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William Sommerwerck William Sommerwerck is offline
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Default where can i get an FM transmitter?

You worry too much. Go ahead and try it out. Adjust it to where you
think it is supposed to be and you'll probably be legal anyway. The
FCC guys aren't sitting around waiting to bust people like you if you
are a few uV too high!


If you don't cause interference with other stations, you're unlikely to be
noticed. Make sure you're at least two channels away from any other station,
especially the weak ones.


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George Gleason George Gleason is offline
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Default where can i get an FM transmitter?


"Julian" wrote in message
...
On Mon, 24 Jul 2006 00:04:31 GMT, "George Gleason"
wrote:

I built a Ramsey electronics tunable fm transmitter
it was explained to me that the fcc does not care about "transmitter"
power
or antenna design or size
the part 15 is based on measured feild strength at some set distance from
the antenna
I have not used mine sinceI built it out of fear that the fcc will impound
and auction everthing else audio I own saying it was support gear for the
1
watt trasmitter I built(this is within thier rights as well as something
like 25,000$ fine per occourance)
it just became to risky to use
George


George,

You worry too much. Go ahead and try it out. Adjust it to where you
think it is supposed to be and you'll probably be legal anyway. The
FCC guys aren't sitting around waiting to bust people like you if you
are a few uV too high!



Thank you
I really wanted to put it in service sending feeds to battery powered
speakers
I set up large outdoor car shows , some times going 1/2 mile from the
annoucer location
I buit the transmitter to avoid having to drop several 600 foot speaker
cables
I thought a radio link to speakers running off a car radios,and car
battries
would be just the ticket
I may exlore that further now
George




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Default where can i get an FM transmitter?


On 2006-07-24 said:
You worry too much. Go ahead and try it out. Adjust it to where
you think it is supposed to be and you'll probably be legal
anyway. The FCC guys aren't sitting around waiting to bust people
like you if you are a few uV too high!

If you don't cause interference with other stations, you're
unlikely to be noticed. Make sure you're at least two channels away
from any other station, especially the weak ones.


Pay attention to whether TV channel 6 is used in the area
where you want to deploy these for the car shows etc. as
well George. nOT channel 6 on the cable, actually
terrestrial TV channel 6. THat way you're safe in the lower
end of the band if you avoid interfering with the weak
noncommercial broadcasters you find there.

IF you get the wrong FCC guy who attends the event you might
be bugged about it, but the right guy might be sympathetic
and help you adjust the gear.

Better yet, find a local ham who's friendly to you who has
the measurement equipment and run some tests.
some commercial two-way radio installers/maintainers also
might have equipment thta will let you measure the field
strength.



Richard webb,
Electric Spider Productions
Replace anything before the @ symbol with elspider for real
email address.


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Richard Crowley Richard Crowley is offline
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Default where can i get an FM transmitter?

"George Gleason" wrote ...
I really wanted to put it in service sending feeds to battery powered
speakers
I set up large outdoor car shows , some times going 1/2 mile from the
annoucer location
I buit the transmitter to avoid having to drop several 600 foot
speaker cables
I thought a radio link to speakers running off a car radios,and car
battries
would be just the ticket
I may exlore that further now


Wireless microphone equipment is frequently used
for that kind of application. Very frequently used on
movie sets, and even for feeding audio to those big
events on the Washington DC mall where speaker
towers are blocks apart, etc. Some wireless-mic
equipment is specially rigged for feeding line-level
signals (in and out).

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Richard Crowley Richard Crowley is offline
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"Bob Cain" wrote ...
*Very* cool! Anybody else got links to kit sites?


http://gbppr.dyndns.org/PROJ/lpfm/index.html
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Ronald Wiebe Ronald Wiebe is offline
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"Bob Cain" wrote in message
...
Ramsey Electronics offers several relevant products in kit form.

http://www.ramseyelectronics.com


*Very* cool! Anybody else got links to kit sites?


Bob
--



http://www.broadcastwarehouse.com/

I have their 1 watt transmitter. Definitely a step above Ramsey in quality
(and price).

Ron


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George Gleason George Gleason is offline
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"Richard Crowley" wrote in message
...
"George Gleason" wrote ...
I really wanted to put it in service sending feeds to battery powered
speakers
I set up large outdoor car shows , some times going 1/2 mile from the
annoucer location
I buit the transmitter to avoid having to drop several 600 foot speaker
cables
I thought a radio link to speakers running off a car radios,and car
battries
would be just the ticket
I may exlore that further now


Wireless microphone equipment is frequently used
for that kind of application. Very frequently used on
movie sets, and even for feeding audio to those big
events on the Washington DC mall where speaker
towers are blocks apart, etc. Some wireless-mic
equipment is specially rigged for feeding line-level
signals (in and out).


I have used every sort of wireless they all depend on line of sight
I can not establish line of sight in the state parks I work
the only unit that gave adaquate range was the lectrosonic, not in the price
range I can deploy at a gig that pays 500$
george





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Default where can i get an FM transmitter?

Richard Crowley wrote:
"Mark" wrote ...
the problem is that the legal ones cannot go very far. the FCC rules
limit the field strength to something like 150uV/meter at 3 feet
(IRRC)


I believe Part 15 specifies the limit of a "10-foot"
antenna, and 100mW of power to the "final".


Not any more. Current Part 15 rules mandate a particular emitted field
strength at some distance from the transmitter.

It's all academic, however, since the FCC does not enforce part 15 rules,
and you can buy FM transmitters that exceed the limits at any department
store now.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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Scott Dorsey Scott Dorsey is offline
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Default where can i get an FM transmitter?

George Gleason wrote:

Thank you
I really wanted to put it in service sending feeds to battery powered
speakers
I set up large outdoor car shows , some times going 1/2 mile from the
annoucer location
I buit the transmitter to avoid having to drop several 600 foot speaker
cables
I thought a radio link to speakers running off a car radios,and car
battries
would be just the ticket


Umm... THAT will get you shut down. That's well beyond the levels that
people are talking about for monitoring in their car.

I may exlore that further now


There are legal ways to do point-to-point RF links on licensed channels,
which don't cost all that much. You may be able to find a used Marti rig,
for instance.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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On 2006-07-24 said:
"George Gleason" wrote ...
I really wanted to put it in service sending feeds to battery
powered speakers
I set up large outdoor car shows , some times going 1/2 mile from
the announcer location
I buit the transmitter to avoid having to drop several 600 foot
speaker cables
I thought a radio link to speakers running off a car radios,and
car battries
would be just the ticket
I may exlore that further now

Wireless microphone equipment is frequently used
for that kind of application. Very frequently used on
movie sets, and even for feeding audio to those big
events on the Washington DC mall where speaker
towers are blocks apart, etc. Some wireless-mic
equipment is specially rigged for feeding line-level
signals (in and out).

Also if you get the licensing you have higher power, regular
commercial uhf business channels with proper licensing would
give you higher power legally with better reliability.
YOu're not feeding full range stereo with desire for high
fidelity with these things I"d assume, so communications
grade audio should be good enough. GO for the wireless mic
frequencies with a license or regular commercial UHF
business band, get the license, have the higher power and
the advantages that come with it.

wIth these low power fm broadcast band transmitters you have
to watch your field strength to remain within part 15
limits, but yet you want some height and possibly a gain
antenna which would possibly put you over legal limits.
terrain and even objects between transmitter and receiver
can degrade the received signal and the way to combat that
is better antenna systems and a little more wattage out the
back end.




Richard webb,
Electric Spider Productions
Replace anything before the @ symbol with elspider for real
email address.


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On Mon, 24 Jul 2006 11:54:10 GMT, "George Gleason"
wrote:

Thank you
I really wanted to put it in service sending feeds to battery powered
speakers
I set up large outdoor car shows , some times going 1/2 mile from the
annoucer location
I buit the transmitter to avoid having to drop several 600 foot speaker
cables
I thought a radio link to speakers running off a car radios,and car
battries
would be just the ticket
I may exlore that further now
George


These things are legal and are sold as consumer products so the FCC
doesn't expect you to be a licensed broadcast engineer to operate one.
If you do stupid stuff like operate on another station's frequency,
turn the power up all the way, attach a stronger antenna and broadcast
24/7 you will probably get the FCC's attention. As long as you find a
channel where there is nothing on frequency or on either side (ideally
nothing on 2 ch's to either side) and operate the way the device is
intended to, there should not be a problem. Yes, you should be
concerned about interfering with ch6 TV too if there is one in your
area and you are in the 90 - 91 MHz band.

The rules are written strongly so as to be able to prosecute pirates,
not responsible consumers. The use you describe is a good example of
exactly why the FCC allows these devices to be manufactured.

Have fun!

Julian



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On Mon, 24 Jul 2006 13:59:39 GMT, "George Gleason"
wrote:


I have used every sort of wireless they all depend on line of sight
I can not establish line of sight in the state parks I work
the only unit that gave adaquate range was the lectrosonic, not in the price
range I can deploy at a gig that pays 500$
george


FM radio is line of sight too.

Julian




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wrote:
Also if you get the licensing you have higher power, regular
commercial uhf business channels with proper licensing would
give you higher power legally with better reliability.
YOu're not feeding full range stereo with desire for high
fidelity with these things I"d assume, so communications
grade audio should be good enough. GO for the wireless mic
frequencies with a license or regular commercial UHF
business band, get the license, have the higher power and
the advantages that come with it.


I was presuming full range stereo. If you just need communications grade
stuff, there are LOTS of alternatives out there, some of which are just
solid as hell. I'd first start looking at low band VHF gear... there is
a lot of it out there, and aside from the itinerant frequencies (and the
broadcast aux frequencies), the licensed channels are dirt cheap.

wIth these low power fm broadcast band transmitters you have
to watch your field strength to remain within part 15
limits, but yet you want some height and possibly a gain
antenna which would possibly put you over legal limits.
terrain and even objects between transmitter and receiver
can degrade the received signal and the way to combat that
is better antenna systems and a little more wattage out the
back end.


I don't think I'd want to rely on something like that for an application
that had to be reliable. Things like paging systems at outdoor events
have to be reliable, if only because they sometimes have to be used for
crowd manageent in crisis situations.
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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Julian wrote:

There are legal ways to do point-to-point RF links on licensed channels,
which don't cost all that much. You may be able to find a used Marti rig,
for instance.


Which Marti rig are you referring to? I have a feeling this will be
too much $. Sounds like he needs more than one receiver.


Marti made all kinds of transmitters with wideband modulation, mostly in
the 10W range, on the broadcast auxiliary channels. They were (and still
are) sold for broadcast remote work. Since they have been making the things
since the early 1950s, there are lots and lots of old ones out there.
They show up at hamfests for next to nothing sometimes.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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"Julian" wrote in message
...
On Mon, 24 Jul 2006 13:59:39 GMT, "George Gleason"
wrote:


I have used every sort of wireless they all depend on line of sight
I can not establish line of sight in the state parks I work
the only unit that gave adaquate range was the lectrosonic, not in the
price
range I can deploy at a gig that pays 500$
george


FM radio is line of sight too.

Julian


humm, I was testing my little unit to see what it could do and maybe due to
reflections or the phase of the moon it was working excellent on the other
side of a hill and across the road(it was inside on my stereo console) from
where I live
definatly not any"line of sight" I could determine
George




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On 2006-07-24 (ScottDorsey) said:
I wrote:
Also if you get the licensing you have higher power, regular
commercial uhf business channels with proper licensing would
give you higher power legally with better reliability.
YOu're not feeding full range stereo with desire for high
fidelity with these things I"d assume, so communications
grade audio should be good enough. GO for the wireless mic
frequencies with a license or regular commercial UHF
business band, get the license, have the higher power and
the advantages that come with it.

I was presuming full range stereo. If you just need communications
grade stuff, there are LOTS of alternatives out there, some of
which are just solid as hell. I'd first start looking at low band
VHF gear... there is a lot of it out there, and aside from the
itinerant frequencies (and the broadcast aux frequencies), the
licensed channels are dirt cheap.

I"m with Scott here. I"m presuming for a car show it's
voice announcements, not hi fidelity stereo for paging,
crowd control etc. YOu can also use these channels between
your trucks and the shop too btw George.

I don't think I'd want to rely on something like that for an
application that had to be reliable. Things like paging systems at
outdoor events have to be reliable, if only because they sometimes
have to be used for crowd manageent in crisis situations.

I"m assuming here you're talking about those little consumer
fm broadcast transmitter kits.

IN another post in this thread George talked about how he'd
played with it while listening to it on his console at home
while placing it over a hill. yEs there's a bit of
defraction or bending that can happen with these fm signals,
but it's still essentially line of sight. Have somebody
walk between your stereo console's antenna and the
transmitter while you're listening to it. TO get enough
signal strength to fully quiet the receiver in some
situations is going to require some more field strength than
you can legally get with one of these in many applications.
YEs I've played with low power transmitters for years, I"m
an active ham radio and I work with vhf and uhf on a regular
basis.
sOme enhancement via the troposphere and other effects can
increase range at times, but for your application I'd think
it too unreliable to take to the bank. INcreasing antenna
gain and/or height can also get you in trouble, and a bust
can really put the old crimp in your business plans and
livelihood. Low band vhf gear is going cheap these days
with a lot of communities going with state of the art uhf
systems, both trunked and conventional. sHOp some ham
fests, talk to a local commercial two-way dealer and get set
up with the licenses. AS I said, you can even use them
between your shop and your vehicles, or possibly on the job
site with setup of a conventional sound system.




Richard webb,
Electric Spider Productions
Replace anything before the @ symbol with elspider for real
email address.




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Mark Mark is offline
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Default where can i get an FM transmitter?


FYI

http://www.mediageek.net/?p=1338

These are technically illegal...yes you can probably get away with it
if you don't bother anybody, but you should know that if the signal can
be heard well (i.e. in stereo without noise) over a few dozen feet,
it is probably illegal.



Mark

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Scott Dorsey Scott Dorsey is offline
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Default where can i get an FM transmitter?

In article ,
Julian wrote:
On 24 Jul 2006 14:36:40 -0400, (Scott Dorsey) wrote:


Marti made all kinds of transmitters with wideband modulation, mostly in
the 10W range, on the broadcast auxiliary channels. They were (and still
are) sold for broadcast remote work. Since they have been making the things
since the early 1950s, there are lots and lots of old ones out there.
They show up at hamfests for next to nothing sometimes.


You're talking about the 950 MHz stuff? I don't think he'd be legal
with that. That is frequency coordinated. It used to be a lot
looser, but the FCC changed the rules about 3 years ago.


Over the years, Marti made stuff in the 26 MHz band, the 450 MHz band,
and the 950 MHz band. ALL of them are either coordinated (in the case of
the broadcast auxiliary channels) or require the channel to be licensed
specifically to the user (in the case of everything else).

This is a GOOD thing. It means you aren't sharing a channel with everyone
else. It means a little paperwork and some more money, but it's worth every
penny.

Incidentally, if anyone has any of the 26 Mhz Marti boxes with the reactance
tube modulators in the junk box, I'm looking for one. To be honest I'd be
interested in any of the low-band tube ones with the grey metal chassis and
the male mike input jacks.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."
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