I couldn't agree with you more. 30 dBuV is a rather strong signal. And, yes, the LISNs do not represent real world conditions, but at least they are a standard with to measure. There is a LOT I do no
Dave, here 'should' be a PDF copy. See attachment. Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* *Just Think* _______________________________________________ RFI mailing list RFI@contesting.c
I'll try loading this. Otherwise, how do I make it available to all? -- *Dave - WØLEV* *Just Let Darwin Work* *Just Think* _______________________________________________ RFI mailing list RFI@contest
I've tried uploading the small Word document to the "Articles" section under "How To", but it appears as gibberish. How do I upload something to the site that would do everyone in the RFI group some
I have held off writing this since the subject recently came up. However, it is time to relate a complaint that we as a club (Northern Colorado Amateur Radio Club, NCARC) filed some six or seven year
No connection to AIRSPY other than using their products. The AirSpy SDR coupled with SDR# SW can be used as a quite capable spectrum analyzer. So much so that I recommend it to clients who don't have
have held off writing this since the subject recently came up. However, it is time to relate a complaint that we as a club (Northern Colorado Amateur Radio Club, NCARC) filed some six or seven years
Dave Cole, our 'leader' has been kind enough to post this to a www page. Here is the link - THANK YOU, DAVE!! https://www.nk7z.net/wp-content/uploads/2019/11/IMPROPER-AND-PROPER-SHIELD-TERMINATION-TE
I don't know. You'll have to check their site: SirSpy.com Dave - WØLEV -- *Dave - WØLEV* *Just Let Darwin Work* *Just Think* _______________________________________________ RFI mailing list RFI@conte
OK, Dave. Nor am I. After working for corporate America for too many years and avoiding being a manager, I don't want to be a leader, especially in retirement!! Dave - WØLEV -- *Dave - WØLEV* *Just L
I forgot we can not embed images nor attach them on this group. So, here it is without the embedded image. In your third image, the audio spectrum, the groups (first peak of first group to first peak
Try again: In your third image, the audio spectrum, the groups (first peak of first group to first peak of next group) is 17.5 ms. deleted image........... The period on one cycle at 60 Hz is 16.67 m
And again In your third image, the audio spectrum, the groups (first peak of first group to first peak of next group) is 17.5 ms. deleted image The period on one cycle at 60 Hz is 16.67 ms. Very clos
I give up. It's power line discharge. Dave - WØLEV One very last try: Copy to Word. Eliminate image. Copy test with no image. Paste to email. If this doesn't work, I give up: In your third image, the
OK. I confess I've never had a wire fall on me. But there are better tools. MFJ (I hate to admit) sells an ultrasonic microphone much like those used by professional power providers. It is far better
This is certainly 120 Hz power line noise. Walk the lines with an ultrasonic microphone coupled to a small parabolic or spherical reflector. MFJ makes one for about $100. Dave - WØLEV -- *Dave - WØLE
Use of an ultrasonic detector is highly useful in finding discharges on the electric distribution grid, especially localized to the home neighborhood. Sure, MFJ makes one, but there is an option I ra
FCC wants to see DATA. If at all possible, travel to a bad site and take data in a rigorous engineering manner for the babies at FCC. Write it up in a technically sound manner. FCC is all lawyers, th
When we resided in the large apartment complex in Lovaland, Colorado, I could not receive an AM station (KCOL) in Fort Collins (transmitter, maybe 10-miles distant) due to RFI throughout the complex.
The base of LED lights contain a SMPS. Some are good, many are bad for RFI. I have LED 'bulbs' in our four pendant lights in the kitchen. They are clean, even up close. BUT,........they come from a r