HFU HF Underground
Loggings => Longwave Loggings => Topic started by: ChrisSmolinski on December 13, 2016, 1432 UTC
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They must be testing again?
(http://i.imgur.com/RSxMgmT.png)
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Have had the LORAN-C receiver on for about 7 minutes (0045-0052 UTC (14 Dec)), but it hasn't found anything yet. Its set to auto scan, but start with 8970.
Hopefully its still there and not only on during business hours.
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Still audible here as of 0337z.
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Grrr... I had the receiver on after the previous post roughly 0100-0330 and it still found nothing. Even fed it new batteries.
Unless, they're transmitting a signal that's not compatible with LORAN-C.
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Strange, it sounds like the normal pulsing LORAN, but perhaps it is a slightly different format. Still on at 1110z.
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Nuts.
Didn't have a chance to check yesterday, but have it on now (Dec 15, 2016 UTC 1625-1637). Nothing heard so far.
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Lol watch this turn out to be something local to Chris, like a modem or plasma tv or something.
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Still heard at 1658z today. If this is a plasma TV, it has exactly the correct timing to duplicate the LORAN pulses from two stations.
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Hm.
Had it on until around 1815 UTC and never found anything. Moved it around the house, but think I'll move it again.
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Hm.
Had it on until around 1815 UTC and never found anything. Moved it around the house, but think I'll move it again.
Have you tried using a radio, before using a dedicated LORAN unit?
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So this is what I've found so far:
- The signal I hear on 100 kHz is absolutely not LORAN-C, but a very horrible blotch of QRM.
- Using the AFE822x with phasing, was able to mostly phase out the noise and hear the LORAN-C signal.
- Once phased, MultiMode was able to pick out two stations.
- On the Perseus with a ALA1530S+ way out back (different antenna than what the AFE822x is using), it also picks it up.
- This is the fun part: With the Perseus, ALA1530S+, and two other radios into an antenna switch, and the antenna switch set to disconnected, still get hammered with the QRM.
- Unplugged the other two non-used receivers so its just Perseus & the loop. Still coming in. With the switch set to disconnected. Yeah, whatever the hell it is, its coming down the feedline, somehow.
- Traced around the house and noise seems to be on the wiring & the cold water pipes. Mostly rules out the meter, as its 900 MHz, according to the records with the FCC. Doubtful the company would lie about this).
- When rotating the loop, that noise is at a minimum when perpendicular to the house. However, in that position, can just barely hear LORAN-C.
Turned off a few new things and its not the new things. Have a couple of other things to check (not going to shut off the main breaker right now as its 0 deg F outside with impending snow storm.)
>:(