these devices may fall under an experimental category where you are allowed 
higher power than under other categories like with the in car FM 
transmitters.
Regardless, I seem to remember something about part 97 is it, allowing those 
who hold an amateur radio license being allowed to operate these devices for 
experimental purposes at high power compared to those who do not hold a 
license.
Perhaps that is dreaming though.
Either way, these things are sold all the time and are easily obtainable by 
the general public, which leads me to believe that they are both type 
accepted, and quite legal to use at their high power settings by the average 
person.

73
Colin, V A6BKX
----- Original Message ----- 
From: "Howard, W A 9 Y B W" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Tuesday, March 12, 2013 1:38 PM
Subject: Re: FM Transmitter Issues And Questions


> Hi Ron,
>
> I thought transmitters of this type were supposed to be limited to 1 tenth
> of a watt.  I was mainly questioning the 7 watt level.
>
>  Howard #3
>
> ----- Original Message ----- 
> From: "Ron Canazzi" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Tuesday, March 12, 2013 1:48 PM
> Subject: Re: FM Transmitter Issues And Questions
>
>
>> Hi Howard,
>>
>> Since this product is sold in the US, I would think it is type accepted 
>> by
>> the FCC.  At least the little piece of paper that I got with it that fell
>> out on the floor and except for my wife seeing it and reading it, I
>> wouldn't
>> have known, says so.  Properly run with that telescoping antenna--which I
>> run most of the way collapsed, I would doubt it would be heard any more
>> than
>> a few houses.  And on one watt, the thing doesn't even get warm--let 
>> alone
>> hot.
>>
>> I was only joking about running it on high power with a roof mount
>> antenna.
>>
>> ----- Original Message ----- 
>> From: "Howard, W A 9 Y B W" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Tuesday, March 12, 2013 1:10 PM
>> Subject: Re: FM Transmitter Issues And Questions
>>
>>
>> It seems that we "Hams" shouldn't jeopardize our license by operating
>> illegal transmitters.  We of all people should know better!
>>
>> 73
>>
>> Howard #3
>>
>> ----- Original Message ----- 
>> From: "Russ Kiehne" <[log in to unmask]>
>> To: <[log in to unmask]>
>> Sent: Tuesday, March 12, 2013 10:54 AM
>> Subject: Re: FM Transmitter Issues And Questions
>>
>>
>>>I would be interested in knowing if these are the fm transmitters that 
>>>the
>>> fCC has been shutting down?  Week after week, I hear reports from the 
>>> FCC
>>> on
>>> Amateur Radio Newsline about Notices of Apparent Liability.
>>>
>>> -----Original Message----- 
>>> From: Butch Bussen
>>> Sent: Tuesday, March 12, 2013 7:26 AM
>>> To: [log in to unmask]
>>> Subject: Re: FM Transmitter Issues And Questions
>>>
>>> With mine on high  hpower, not sure if we have the same transmitter, got
>>> mine on ebay, my ifr shows it putting out 8 watts, and on my quarter
>>> wave whip on my metal roof, I get around 5 mmiles.
>>> 73
>>> Butch
>>> WA0VJR
>>> Node 3148
>>> Wallace, ks.
>>>
>>>
>>> On Tue, 12 Mar 2013, Ron
>>> Canazzi wrote:
>>>
>>>> Hi Jim,
>>>>
>>>> As of yet, I haven't done the range check.  I am still running it on 1
>>>> watt
>>>> because it is fine at that level.  Some day when I get real brave, I'll
>>>> put
>>>> it up to 7 watts and walk around the neighborhood to see just what it
>>>> can
>>>> do.  Who know, I might even hook it up to my Channel Master scanner
>>>> antenna
>>>> on high power for a short time to see if it actually reaches to the
>>>> tenths
>>>> of miles in range--though I must be careful about the match on that
>>>> older
>>>> antenna.  I am running it at 87.5 mHz--the lowest frequency that most 
>>>> FM
>>>> receivers will receive so as to not arouse any outside interest 
>>>> <laugh>.
>>>>
>>>>
>>>>
>>>> ----- Original Message -----
>>>> From: "Jim Gammon" <[log in to unmask]>
>>>> To: <[log in to unmask]>
>>>> Sent: Tuesday, March 12, 2013 1:29 AM
>>>> Subject: Re: FM Transmitter Issues And Questions
>>>>
>>>>
>>>> Hey, that's great.  Have you done a range check to see how far
>>>> you can hear your signal? Jim WA6EKS
>>>>
>>>> ----- Original Message -----
>>>> From: Ron Canazzi <[log in to unmask]
>>>> To: [log in to unmask]
>>>> Date sent: Tue, 12 Mar 2013 00:47:38 -0400
>>>> Subject: Re: FM Transmitter Issues And Questions
>>>>
>>>> Hi Group,
>>>>
>>>> Thanks for all the suggestions.  I have pretty much solved the
>>>> issue by
>>>> moving the transmitter as far away from the computer and speakers
>>>> as
>>>> possible.  I think I might have to get it a bit further because
>>>> at times I
>>>> still hear a bit of hum, but at least about 90% of the issue is
>>>> gone.  I
>>>> have a 6 foot audio cable.  Maybe I should get 1 a bit
>>>> longer--perhaps 8 or
>>>> 10 feet.
>>>>
>>>>
>>>> ----- Original Message -----
>>>> From: "Jim Gammon" <[log in to unmask]
>>>> To: <[log in to unmask]
>>>> Sent: Monday, March 11, 2013 11:29 AM
>>>> Subject: Re: FM Transmitter Issues And Questions
>>>>
>>>>
>>>> Pretty sure there is no conflict between WiFi and the FM
>>>> transmitter.  I would be surprised if that was the case.  Jim
>>>> WA6EKS
>>>>
>>>> ----- Original Message -----
>>>> From: Curtis Delzer <[log in to unmask]
>>>> To: [log in to unmask]
>>>> Date sent: Mon, 11 Mar 2013 07:39:35 -0700
>>>> Subject: Re: FM Transmitter Issues And Questions
>>>>
>>>> it might be picking up the pulsations from your WIFI setup.  try
>>>> temporarily turning that off and see if it goes away.
>>>> if it does, try using the transmitter further away from your
>>>> modem? router?
>>>>
>>>>
>>>> At 11:05 PM 03/10/13, you wrote:
>>>>     Hi list,
>>>>
>>>> Since this is one of the lists where I got information about an
>>>> FM
>>>> transmitter for feeding audio from my computer to FM receivers
>>>> through out
>>>> my house and property, I thought I would inquire here again.
>>>>
>>>> I have purchased the Sansonic FM transmitter that someone
>>>> referenced on this
>>>> list a few months ago.  It does a real nice job with meeting my
>>>> requirements
>>>> of clear and clean signals through out my property.  However, I
>>>> have run
>>>> into one problem.  I have the transmitter fairly close to the
>>>> computer from
>>>> which I am running the audio.  It is about 4 feet away from the
>>>> computer.  I
>>>> am getting a pulsating hum through the computer speakers when the
>>>> transmitter is operating.  The transmitter runs from 1 to 7
>>>> watts.  In light
>>>> of the issue, I don't dare put the power any higher than 1
>>>> watt--and I
>>>> really don't need to anyway.
>>>>
>>>> What can I do to solve this problem?  Any help would be greatly
>>>> appreciated.
>>>>
>>>>