[time-nuts] strange carrier

Doug Ronald doug at dougronald.com
Fri Nov 14 17:54:18 EST 2014

Thanks to all who responded with suggestions and comments. Here is the latest...
At great effort, I moved the loop-stick antenna and preamp, now mounted on a pole, from the rear of the house to a midpoint of the house toward the front. The old position had the antenna about 10 feet off the ground. The new position now allows me to rotate the antenna, and it is 21 feet off the ground. Just my luck, that could hardly have been a worse move. Now the offending carrier is much, much stronger, and completely swamps poor little WWVB. Also, the offending illegal transmitter does not null with rotation of the loop-stick antenna as WWVB does. This to me means the generator is local to the antenna. My neighbor has a DishTV antenna and down-converter across the way from my WWVB antenna which stood a good chance of having a SMPS in it. I leaned my antenna and pole over the fence toward the dish, and the carrier immediately saturated my preamp. So, the next move is get my WWVB antenna and preamp centered on my lot, as far from illegal transmitters I can't control as possible.
The analog multipliers for my Costas loop arrived today, so I'm super-anxious to get a decent signal...
-Doug, W6DSR

-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Doug Ronald
Sent: Thursday, November 13, 2014 3:23 PM
To: time-nuts at febo.com
Subject: [time-nuts] strange carrier
Importance: Low

I'm working on my WWVB BPSK receiver and am receiving a carrier, 10 dB stronger than WWVB in Sunnyvale, California, quite stable, on the air 24/7 at a frequency of 59.99240 kHz. I have researched on Internet what it might be, with no results. I have turned off all switch mode power supplies at my location with no effect. The carrier is so stable that it seems like it must be something intentionally generated. I have not tried nulling it out with my directional antenna yet.


Anyone have a clue as to what I might be receiving?



-Doug Ronald




time-nuts mailing list -- time-nuts at febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.

More information about the time-nuts mailing list