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Posts Made By:
NN5I
Forum:
Antenna Solutions
06-15-2017, 11:31 PM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
[QUOTE=ke0me;14823]The apartment was built in the...
[QUOTE=ke0me;14823]The apartment was built in the 1970's, so I will start seeing what they have for basic wiring./QUOTE]
Incidentally, many 70s-vintage buildings were wired with aluminum wires. ...
Forum:
Antenna Solutions
06-07-2017, 09:55 PM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
Welcome aboard, Lula. [Boy, that comma really...
Welcome aboard, Lula. [Boy, that comma really changes the meaning --]
You'll find us a friendly group, with occasional ribbing.
Forum:
Antenna Solutions
11-09-2016, 10:29 AM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
Dick, is that a switching power supply? I...
Dick, is that a switching power supply? I strongly suspect you've found the source of much noise.
Wrap that DC cord a couple turns through a big mix 31 ferrite. Do the same (with another mix 31...
Forum:
Antenna Solutions
10-18-2016, 08:36 AM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
Worst callsign I ever knew of, for CW anyway,...
Worst callsign I ever knew of, for CW anyway, belonged to an acquaintance in the Dallas area in the early 1980s. John Slaughter's call was WB5HSI. He never worked CW, and who could blame him?
...
Forum:
Antenna Solutions
10-16-2016, 08:12 AM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
My first callsign was K4SCK and I wrote it all...
My first callsign was K4SCK and I wrote it all over my schoolbooks. Then the other high-school kids told me what they thought it meant. Back then (1950s) you couldn't change your callsign, either.
Forum:
Antenna Solutions
10-14-2016, 03:09 PM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
I guess your Dad's callsign must have been w0rms.
I guess your Dad's callsign must have been w0rms.
Forum:
Antenna Solutions
10-14-2016, 03:04 PM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
Is it coming in on the antenna? Disconnect...
Is it coming in on the antenna? Disconnect antenna to find out. Is it coming on power (ac) connection? Run on battery to find out, or on a known quiet inverter fed from a battery.
If you have a...
Forum:
Antenna Solutions
03-23-2016, 08:49 AM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
Good old ORR. Learn a new truth every other day,...
Good old ORR. Learn a new truth every other day, and in the in-between days find out that what I've known for decades ain't so.
Forum:
Antenna Solutions
03-23-2016, 01:31 AM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
That seems strange. Every Megger I ever saw was...
That seems strange. Every Megger I ever saw was a device for measuring very high resistances (many megohms -- thus the name Megger). I don't see what use they'd be in measuring the low resistances...
Forum:
Antenna Solutions
03-21-2016, 11:53 AM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
If the neighbors annoy by turning up their TVs...
If the neighbors annoy by turning up their TVs too loud, and there's a community TV antenna system, you could cure that noise with about 100w of RF into the shared coax for a little while. But...
Forum:
Antenna Solutions
03-20-2016, 06:21 PM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
That's surely possible; it depends on the design...
That's surely possible; it depends on the design of the electrical distribution in the building.
Maybe it depends on how well you like the neighbors.
Forum:
Antenna Solutions
03-19-2016, 06:34 PM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
Don't forget the third wire (safety ground) in an...
Don't forget the third wire (safety ground) in an outlet. It may be what you need - and maybe not.
You can find out whether that copper pipe is grounded by measuring the resistance between it and...
Forum:
Antenna Solutions
03-19-2016, 12:19 PM
Replies:
43
RFI noise mitigation
Views:
40,090
Posted By
NN5I
It depends on the source of the noise. I...
It depends on the source of the noise.
I have known hams who got rid of S9 noise in various ways. One had a serious noise problem that went away when someone (unknown :whistle:) mysteriously...
Showing results 1 to 13 of 13
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