That is very odd. I just worked with Jeff on my issue back in November 2020
and he told me to call him if i needed anything else. He was driving a
CenterPoint van. He followed up with a call in Mid December to make sure the
work order he put in had been completed. Yes, it is free and he has the noise
finding equipment and yagi's to find the problem. Finding interference is his
job.
On Sunday, February 7, 2021, 01:36:23 PM CST, <[email protected]>
wrote:
Jeff Hoke was in the process of retiring and I believe he is no longer there.
He was training his replacement though, his name is Gregory Young.
[email protected]
Office: 713-945-6555
Mobil: 832-715-0549
If you can get him to come out he has all the same equipment and can run a
spectrum analysis that could possibly help.
Hope that helps.
Chris Luppens
From: BVARC <[email protected]> On Behalf Of Jeffrey Carson via BVARC
Sent: Sunday, February 7, 2021 8:49 AM
To: BRAZOS VALLEY AMATEUR RADIO CLUB <[email protected]>
Cc: Jeffrey Carson <[email protected]>; Mark Brantana
<[email protected]>
Subject: Re: [BVARC] QRM in new radio setup
Hello,i have had Jeff Hoke with Centerpoint come out and remediate some noise
on a pole behind my house. Very thorough and professional.
His contact information: Contact Jeff by email FIRST.
Jeff Hoke
[email protected]
Office: 713-945-6304
Mobile: 713-304-2728
On Saturday, February 6, 2021, 11:37:44 PM CST, Mark Brantana via BVARC
<[email protected]> wrote:
Tonight I hooked up my little TH-F6A to the same antenna and got the same
noise. I do have to test out my radio, but I am 85% convinced that it is QRM
from a pole transformer located about 25 ft from the long end of my OFDP. This
is a reasonably new transformer, since they replaced it about 5 years ago when
the old one blew. Anyone have experience with getting the electric company to
do a RFI survey?
On the down side, I carried my AM radio to my back yard and heard no detectable
interference. This is turning into a real mystery.
Mark
N5PRD
On Feb 3, 2021, at 6:55 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
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