First time I have heard a digital transmission on an “FRS only” channel.
While at work, I had a scanner going. A little after noon, I had the peace and quiet of the day interrupted by the rattling of what was most likely a DMR transmission that was getting louder. Assuming it was on a business channel, I went over to lock that channel out for the time being. Much to my surprise, it was on FRS channel 10 (467.6125)!
Thinking it was probably an image frequency, I retrieved my moto talkabout. It too, heard the DMR transmission…. So I went to my car and turned on my dual band alinco and cranked it to the suspect frequency, to be greeted by the DMR rattling. It was definitely centered on 467.6125, and not an adjacent frequency that was bleeding over.
The transmissions got louder and louder over a period of a few minutes. I could tell by listening to the shifting signals that there was at least two people talking to each other and at least One of them was a bit long winded. And by the fast signal flutter, they was probably moving at highway speeds. After a few more minutes, both their signals faded out, and didn’t hear them again the rest of the day.
It may have been computer communications, but the general back and forth flow gave me the impression of two people talking as they were driving along.
Unfortunately I did not have any equipment with me to identity or decode the transmission. It would have been interesting to know if they was using encryption or not.
Was not able to get an idea of how much power they were using because I could not figure out which road they was on, or how fast they was moving.
While at work, I had a scanner going. A little after noon, I had the peace and quiet of the day interrupted by the rattling of what was most likely a DMR transmission that was getting louder. Assuming it was on a business channel, I went over to lock that channel out for the time being. Much to my surprise, it was on FRS channel 10 (467.6125)!
Thinking it was probably an image frequency, I retrieved my moto talkabout. It too, heard the DMR transmission…. So I went to my car and turned on my dual band alinco and cranked it to the suspect frequency, to be greeted by the DMR rattling. It was definitely centered on 467.6125, and not an adjacent frequency that was bleeding over.
The transmissions got louder and louder over a period of a few minutes. I could tell by listening to the shifting signals that there was at least two people talking to each other and at least One of them was a bit long winded. And by the fast signal flutter, they was probably moving at highway speeds. After a few more minutes, both their signals faded out, and didn’t hear them again the rest of the day.
It may have been computer communications, but the general back and forth flow gave me the impression of two people talking as they were driving along.
Unfortunately I did not have any equipment with me to identity or decode the transmission. It would have been interesting to know if they was using encryption or not.
Was not able to get an idea of how much power they were using because I could not figure out which road they was on, or how fast they was moving.