I had a scare last weekend when my SDR-IQ showed a huge level of noise on the 500-KHz experimental band. The level was over 1000uV and drove the SDR into clipping with potential damage to the front end. This got me investigating with the K3 showing S9+60 full-tilt noise on 500-KHz. I checked how wide the noise was and observed it from 300-KHz up above 14-MHz. Strongest on MW freq. and 160m, S9+40 on 80m, tapering to S9 on 20m. Fortunately, it disappeared and has not returned. Maybe their favorite football team lost and the shut off the TV? Hopefully, they threw a beer bottle threw the screen. Of course it may not have been a plasma TV but a neighbor doing some welding at 10pm?
I have buried utilities in the subdivision with electric poles about 1/4-mile away E or W and none for a mile N or S. Previous noise floor was S5 on 500-KHz with the K3, S3 on 80m and S2 on 20m. The SDR-IQ shows -115 to -108 dBm for the 500-KHz noise floor. 73, Ed - KL7UW, WD2XSH/45 ====================================== BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-800*w, 432-100w, 1296-testing*, 3400-winter? DUBUS Magazine USA Rep dubus...@hotmail.com ====================================== *temp not in service ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
