450.75000 constant dial tone for the past week

[wallterw]

For the past week I been hearing a dial tone . and a calling dialing
than a message saying call can not be completed as dialed ask your operator
for assistance this is a recording The signal is strong day and night non stop
loop I am in Queens area 11104 zip code

 

[n2nov]

NBC News network feed IFB frequency.

 

[wallterw]

Thanks Charlie But find it strange that something is dialing a phone number
hangs up than dials again for almost a week now I think something else is going
on can you hear it at your location ?
You can hear the dial tone. just like the pots home phone line
you can hear the touch tones. than a message saying number not in service

 

[n2nov]

I hear it full scale on SI. I was in DC last week and only came home last night and heard it.

 

[kruser]

Anybody decode the DTMF digits and see what number the thing is trying to call?

How about monitoring the likely input of 455.750, anyone hear anything there?

 

[ecps92]

Not all Part 74 users, are +/- 5 mhz, many regions have add offsets and the repeater could be 450 or 455

Anybody decode the DTMF digits and see what number the thing is trying to call?

How about monitoring the likely input of 455.750, anyone hear anything there?

 

[kruser]

Not all Part 74 users, are +/- 5 mhz, many regions have add offsets and the repeater could be 450 or 455

That is true. The license actually points towards this one being a simplex frequency now that I look at it more.
The license shows simplex only for that frequency and with a 50kHz bandwidth. ( 50K0F3E emission )
It also appears to be a license for NBC's Mexican services as it has Telemundo in the license name.

We have one TV network here that does use a reversed repeater pair with the output on 455.150 and input on 450.150. They are the only one though. Everyone else has outputs on 450.xxx here. No licensees here use any odd splits, all are the typical +/- 5 MHz split.

Either way, this would not prevent someone from decoding the DTMF tones into the number it's dialing.
Not sure that's actually legal though as most radio communications hooked to the PSTN are off limits as far as monitoring goes.
It sounds like the two users that are hearing it both have a strong signal.

Maybe it's dialing a number wiped out by Hurricane IDA.

 

[ecps92]

in my experience, many of the older Part 74 never list as FB2, but always FB/MO
- altho many of the newer seem to show FB2 and the worst one was both pairs as FB2

That is true. The license actually points towards this one being a simplex frequency now that I look at it more.
The license shows simplex only for that frequency and with a 50kHz bandwidth. ( 50K0F3E emission )
It also appears to be a license for NBC's Mexican services as it has Telemundo in the license name.

We have one TV network here that does use a reversed repeater pair with the output on 455.150 and input on 450.150. They are the only one though. Everyone else has outputs on 450.xxx here. No licensees here use any odd splits, all are the typical +/- 5 MHz split.

Either way, this would not prevent someone from decoding the DTMF tones into the number it's dialing.
Not sure that's actually legal though as most radio communications hooked to the PSTN are off limits as far as monitoring goes.
It sounds like the two users that are hearing it both have a strong signal.

Maybe it's dialing a number wiped out by Hurricane IDA.