Baby Monitor on 462.725 Mhz (Ch. 22)

[afchev]

Over here in Las Vegas, something interesting has popped up on 462.725 Mhz with a DCS tone of 734. Its a constant signal sometimes lasting several hours a transmission or even all day. Sounds like its being used by a "baby monitor" type device. I can hear what sounds like an old person or old couple. Sometimes I can hear a TV going, music, dogs barking, and old man talking about selling off some of his assets. Yesterday I was getting full bars down my street and could hear what sounded like an elderly woman calling out for her husband or caretaker who sounded equally as elderly. She sounded in distress and the male subject was trying to calm her down. There was a discussion about a pain pill and when he offered her a cookie it turned into an argument about who bought the Oreos.

Its not necessarily causing me any issues but depending on my proximity to where ever the signal is coming from, its even heterodyning with the local repeaters on this frequency. This would join the growing list of GMRS freqs being used for silly things like DMR and data modes in my area, but that's another topic for another day.

Anyway, are there any known devices being sold as baby monitors or similar that are using GMRS/FRS frequencies to transmit?

 

[MTS2000des]

AudioVox made this, and it supports VOX, I am sure there are clones. RadioShaft sold an FRS base radio with a locking PTT. Either way, continuous transmissions aren't authorized per the rules, but not that anyone cares these days.

 

[KD8DVR]

Amazon is full of "wireless intercoms" that use FRS frequencies. It's possible some have a locking transmit button.

 

[afchev]

Just for giggles I went ahead and set my radio to transmit with the 734 DPL and I think I gave an old lady a heart attack. Definitely sounds like it's vox activated just the way it cuts in and out based on the sound levels on the other end. Kinda interesting though and finds like these are why I like to scan the 49mhz band to catch any wireless phones or baby monitor transmissions.

 

[N9JIG]

Well this solves a little mystery we had here in the Phoenix area for a while, there was just such a device on 462.550, but also with the 734 DPL code. The traffic heard on it was usually a dog barking but occasional voices could be heard.

Due to the interference it was causing to our repeater one of us set up an FRS radio on the same freq and tone and politely asked them to change the channel. They apparently shut it off and we didn't hear them again for a couple months where it popped up again on an FRS channel.

 

[KevinC]

Well this solves a little mystery we had here in the Phoenix area for a while, there was just such a device on 462.550, but also with the 734 DPL code. The traffic heard on it was usually a dog barking but occasional voices could be heard.

Due to the interference it was causing to our repeater one of us set up an FRS radio on the same freq and tone and politely asked them to change the channel. They apparently shut it off and we didn't hear them again for a couple months where it popped up again on an FRS channel.

I have one in my neighborhood that broadcasts some local LE TG's. I haven't figured it out but my guess is it's someone that comes home for lunch/dinner/whatever and listens to the radios in his vehicle that way.

 

[Echo4Thirty]

I have one in my neighborhood that broadcasts some local LE TG's. I haven't figured it out but my guess is it's someone that comes home for lunch/dinner/whatever and listens to the radios in his vehicle that way.

if by neighborhood you mean its in your radio room

 

[KevinC]

if by neighborhood you mean its in your radio room

Nope. It's close enough to hear on a portable downstairs though. I can't get out much these days so I haven't pinpointed it. My guess is a wrecker driver as LE would probably have a portable. It was weird first time I heard since I was listening to the exact same stuff and thought I was being bugged.

 

[N9JIG]

Nope. It's close enough to hear on a portable downstairs though. I can't get out much these days so I haven't pinpointed it. My guess is a wrecker driver as LE would probably have a portable. It was weird first time I heard since I was listening to the exact same stuff and thought I was being bugged.

There was a guy in Janesville WI who for years had the local fire channel retransmitted on a GMRS channel. While I had an idea where it was I never figured out if he was a buff or on the job. I guess this is more common than I thought.

 

[wtp]

same happened in Venice, Florida.
it quit after a week.
many years ago.

 

[IC-R20]

I have one in my neighborhood that broadcasts some local LE TG's. I haven't figured it out but my guess is it's someone that comes home for lunch/dinner/whatever and listens to the radios in his vehicle that way.

There's one in my area too, an FRS parrot on channel 2. It outputs PL 67.0 but will parrot any transmission on frequency regardless of PL/DPL and has a scanner piped into it as well with a mix of ham and public safety being picked up, also heard the local LTR standard system on it. Probably some prepper type with a wannabe emcomm repeater.