X-File Audio XFT40 Modulator FCC ID

oldies1077 · Jan 22, 2006

I have requested FCC ID info from xfile reguarding their XFT40 modulator.

as a side note let's see if ol FCC deputy director down south from me get his shorts in a knot over me running a certified transmitter.

i'll post FCC ID for this TX when i get it.

Maybe i'll email all transmitter manufacturers and get their FCC ID data and create a database of certified transmitters for FM.

______________
Oldies 1610 AM Stereo

"Proud User of Chris Cuff's Alfredo Lite 100mw"

http://www.part15.us
Largest Part 15 Website in the World

radiopilot · Jan 22, 2006

> I have requested FCC ID info from xfile reguarding their
> XFT40 modulator.
>
>
> as a side note let's see if ol FCC deputy director down
> south from me get his shorts in a knot over me running a
> certified transmitter.
>
> i'll post FCC ID for this TX when i get it.
>
> Maybe i'll email all transmitter manufacturers and get their
> FCC ID data and create a database of certified transmitters
> for FM.
>

Oldies...

I'll save you the trouble... here it is:

https://gullfoss2.fcc.gov/prod/oet/cf/eas/reports/ViewExhibitReport.cfm?mode=Exhibits&RequestTimeout=500&calledFromFrame=N&application_id=725105&fcc_id='RA6NFM-40T'

I already have the copies saved for reference.

Radiopilot

radio8z · Jan 22, 2006

Partial quote:
> as a side note let's see if ol FCC deputy director down
> south from me get his shorts in a knot over me running a
> certified transmitter.
>
Keep in mind that the certification also includes the manufacturer's antenna. If you don't modify anything from factory stock, you will be OK.

radiopilot · Jan 22, 2006

> Partial quote:
> > as a side note let's see if ol FCC deputy director down
> > south from me get his shorts in a knot over me running a
> > certified transmitter.
> >
> Keep in mind that the certification also includes the
> manufacturer's antenna. If you don't modify anything from
> factory stock, you will be OK.
>

The stock antenna is 18 inces long (wire), and it's 40 channels, Digital PLL, Stereo out, and by itself at a height of 25 feet got more than 1/4-1/2 mile of coverage... stock out of the box!

Radiopilot

rfry · Jan 22, 2006

> I have requested FCC ID info from xfile reguarding their
> XFT40 modulator.
> as a side note let's see if ol FCC deputy director down
> south from me get his shorts in a knot over me running a
> certified transmitter.
__________

But wasn't your "FCC problem" related to a 100 mW EDM tx using a 5/8-wave Comet antenna?

Part 15 FM systems are certified after confirming that radiation 3 meters from the antenna meets the Rules. So it isn't really the TRANSMITTER that is certified -- it is the complete system including the antenna.

This means that a transmitter using an antenna different than the one in the certification measurements is no longer "certified."

//

radio8z · Jan 22, 2006

> > Partial quote:
> > > as a side note let's see if ol FCC deputy director down
>
> > > south from me get his shorts in a knot over me running a
>
> > > certified transmitter.
> > >
> > Keep in mind that the certification also includes the
> > manufacturer's antenna. If you don't modify anything from
>
> > factory stock, you will be OK.
> >
>
>
> The stock antenna is 18 inces long (wire), and it's 40
> channels, Digital PLL, Stereo out, and by itself at a height
> of 25 feet got more than 1/4-1/2 mile of coverage... stock
> out of the box!
>
> Radiopilot
>

I read the link that you posted regarding this and I thought I saw the antenna was 10 cm (about 4 inches) and the device was intended to be used in a car.

Where did you get 18 inches at 25 feet?

radiopilot · Jan 22, 2006

> > > Partial quote:
> > > > as a side note let's see if ol FCC deputy director
> down
> >
> > > > south from me get his shorts in a knot over me running
> a
> >
> > > > certified transmitter.
> > > >
> > > Keep in mind that the certification also includes the
> > > manufacturer's antenna. If you don't modify anything
> from
> >
> > > factory stock, you will be OK.
> > >
> >
> >
> > The stock antenna is 18 inces long (wire), and it's 40
> > channels, Digital PLL, Stereo out, and by itself at a
> height
> > of 25 feet got more than 1/4-1/2 mile of coverage... stock
>
> > out of the box!
> >
> > Radiopilot
> >
>
>
> I read the link that you posted regarding this and I thought
> I saw the antenna was 10 cm (about 4 inches) and the device
> was intended to be used in a car.
>
> Where did you get 18 inches at 25 feet?
>

Not sure if that was the Belkin antenna... the Xfile XFT-40 I have here right now has an 18 inch antenna and it has a small label at the tip indicating not to remove or replace with another antenna of different length. The Belkin antenna is inbedded with the audio cable and if removed will allow the transmitter to broadcast over 1/4 mile maybe less, not sure if doing that voild the certification but who cares if all you are doing is broadcasting in your home?

The Xfile transmitter is not just for the car but also for home use which is why it has an antenna. Both Belkin and Xfile are FCC certified transmitters.

Radiopilot

oldies1077 · Jan 22, 2006

want to use the FM to cover house and yard and the AM to cover neihborhood.

> > I have requested FCC ID info from xfile reguarding their
> > XFT40 modulator.
> > as a side note let's see if ol FCC deputy director down
> > south from me get his shorts in a knot over me running a
> > certified transmitter.
> __________
>
> But wasn't your "FCC problem" related to a 100 mW EDM tx
> using a 5/8-wave Comet antenna?
>
> Part 15 FM systems are certified after confirming that
> radiation 3 meters from the antenna meets the Rules. So it
> isn't really the TRANSMITTER that is certified -- it is the
> complete system including the antenna.
>
> This means that a transmitter using an antenna different
> than the one in the certification measurements is no longer
> "certified."
>
> //
>
______________
Oldies 1610 AM Stereo

"Proud User of Chris Cuff's Alfredo Lite 100mw"

http://www.part15.us
Largest Part 15 Website in the World

radio8z · Jan 22, 2006

Radiopilot,

OK. It appeared that you were referring to the unit referenced in the link you posted.

You wrote:

" not sure if doing that voild the certification but who cares if all you are doing is broadcasting in your home? ".

I would hope that my point was understood that if you are using a FCC certified device (no modifications including antenna) then you should not have enforcement problems.

Neil

radiopilot · Jan 22, 2006

> Radiopilot,
>
> OK. It appeared that you were referring to the unit
> referenced in the link you posted.
>
> You wrote:
>
> " not sure if doing that voild the certification but who
> cares if all you are doing is broadcasting in your home? ".
>
> I would hope that my point was understood that if you are
> using a FCC certified device (no modifications including
> antenna) then you should not have enforcement problems.
>
> Neil
>

Neil,

I believe I mentioned the transmitters I had in some previous posts....

The Xfile or any FCC certified FM transmitter is your best hedge against getting any rash statements from the FCC... The Xfile as I have it without mod's are good for 1/4-1/2 mile depending on the height... I also have another Xfile with the stock antenna removed and replaced with a 50 ohm 1/2 wave dipole and the little sucker can punch out a good 1-2 miles depending on how good one wishes to recieve the signal in stereo at about a 25-30 foot height... very efficient and clear to about 1 mile... this is the only modification to this transmitter and it's nice too.

The Belkin FM transmitter slightly does 30 feet unmodified, removing the antenna from the audio cable gave me about 1/4 mile of coverage at a height of 25-30 feet alone.

RadiopilotEdited by radiopilot on 01/23/06 12:06 AM.