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| Oddball New Federal Signals http://interceptradio.com/bbs/viewtopic.php?f=7&t=9352 |
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| Author: | cparris2 [ Mon Nov 16, 2020 12:38 pm ] |
| Post subject: | Oddball New Federal Signals |
Over the past month I have begun hearing some odd radio traffic on an analog repeater on 173.1375 MHz. Sometimes the signal was weak but readable, and others it was very strong. The signal was always analog, with a CTCSS tone of 77.0 Hz. The audio was often an automated voice announcing warnings about voltage being low or being zero. At first I thought it might be something from the Bonneville Power Administration (BPA) as their radio system is still analog. But then the voice traffic seemed to be talking about the power system serving the repeater site, indicating there was a problem with the UPS power. I then begin to wonder if it was an image from a nearby amateur repeater site. I have a couple of ham repeater sites near me that sometimes cause images, but when I heard the traffic on 173.1375, I found nothing related on the VHF or UHF amateur bands. About two weeks ago, I manged to record a lot of voice traffic on this frequency. It was clearly a repeater and had beeps and boops when the users keyed up and finished talking. But there were no call signs or names mentioned while I was listening. The two users certainly sounded like Canadian truck drivers passing through the Portland area. There was discussions of traffic on I-5, various cars or drivers that were catching their attention, and eating plans, but nothing to identify the users. The truck drivers seemed to disappear, but the mystery deepened this last week when multiple VHF frequencies in the federal band were now all keyed up continuously with no voice and a 77.0 PL tone. The frequencies that are broadcasting full time are: 171.2750 173.1125 173.1375 173.6500 - CP |
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| Author: | cparris2 [ Mon Nov 16, 2020 12:39 pm ] |
| Post subject: | Re: Oddball New Federal Signals |
Also of note - Listening to the 173.1375 MHz signal, I am randomly hearing some tones. It sounds like a repeater post transmission bee-boop, a pause, then four rapid tones, like a patch disconnect. I’m hearing them maybe a couple of hours apart. It might be random noise or something on the input or remote control circuit causing it. I have not heard any definitive voice transmissions. Others are reporting the same type of thing on the other frequencies I listed above. - CP |
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| Author: | Jim [ Mon Nov 16, 2020 6:30 pm ] |
| Post subject: | Re: Oddball New Federal Signals |
LADD FREQUENCIES USED BY TRUCKERS IN CANADA: (Logging ADministration Dispatch) 154.100Mhz (Ladd-1) open trucker channel, (like CB 19 in the states) 158.940Mhz (Ladd-2) Weigh station channel 154.325Mhz (Ladd-3) 173.370Mhz (Ladd-4) No match! |
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