*Divide and Conquer* *Get a 12 volt battery to operate the radio* *Then pull the main breaker in your house.* *Either it gets better or it doesn't* *Michael Monsour*
On Wed, Feb 3, 2021 at 6:56 PM Gus Bernard via BVARC <[email protected]> wrote: > What Rick says. Then try taking it portable, away from the QTH and power > lines. > > Gus, K5GMB > > On Sun, Jan 31, 2021 at 7:33 PM Mark Brantana via BVARC <[email protected]> > wrote: > >> I am reaching out for ideas on a radio issue. I have installed an IC-745 >> Icom with an MFJ-2010 offset fed dipole. The power supply is a 20A MegaWatt >> switching power supply, which is located right next to the radio. The >> antenna is under some high power-lines with the long leg 90 degrees to the >> power-lines. I used my nanoVNA to study the band SWR response, and >> everything looks reasonable, though some small adjustments may need to be >> made. Nothing is grounded as yet. >> >> Here’s my problem. I am only attempting to receive at this time and I get >> consistent QRM white noise across all bands to the point where I can barely >> pick out some voices, etc. >> >> >> - I am confident that the antenna is properly connected due to my >> antenna study. >> - I don’t believe the power lines are an issue, since the problem >> would likely be more isolated show up as birdies at certain frequencies. >> - The radio settings seem to all be correct according to the manual. >> >> >> - Lack of grounding, but again the white noise is generally >> consistant across the spectrum. Still, this could be the problem. >> - I have turned off my computer, so there no QRM from its power >> supply. >> - It does not help to have the switching power supply right next to >> the radio, but other users give good reports on this model and no QRM >> issues are mentioned. >> - I tried the radio at different times of the day on 20-m voice band, >> with the same noisy result. >> - It could be the net result of a large number of small device >> transformers, but I doubt it. >> - I turned off the wifi, and still no change. >> >> >> Hmm… I am a little stumped. Any thoughts or ideas? Personal experiences? >> >> Mark >> N5PRD >> ________________________________________________ >> Brazos Valley Amateur Radio Club >> >> BVARC mailing list >> [email protected] >> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >> > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org >
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