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References: [ +from:alex@kr1st.com: 13 ]

Total 13 documents matching your query.

1. Re: [RFI] Air Gig? (score: 1)
Author: Alex <alex@kr1st.com>
Date: Thu, 22 Sep 2016 08:16:09 -0400
Is what you are referring to what they call the "plastic antenna" in the article linked in the OP? Is this the antenna: http://tinyurl.com/jcc24dd (From http://tinyurl.com/hoequ7l) 73, --Alex KR1ST O
/archives//html/RFI/2016-09/msg00035.html (8,994 bytes)

2. [RFI] LG machines can be OK (score: 1)
Author: Alex <alex@kr1st.com>
Date: Sat, 27 Jan 2018 14:11:51 -0500
I think we should be careful to wholesale blame a brand for RFI. I'm sure that for every brand you can find folks who had RFI problems and folks who didn't. I put zero value on reports that only indi
/archives//html/RFI/2018-01/msg00100.html (8,405 bytes)

3. Re: [RFI] LG machines can be OK (score: 1)
Author: Alex <alex@kr1st.com>
Date: Sat, 27 Jan 2018 18:31:57 -0500
OK, so you know more about this than me. I'm sure my point is not lost on others. 73, --Alex KR1ST _______________________________________________ RFI mailing list RFI@contesting.com http://lists.con
/archives//html/RFI/2018-01/msg00107.html (10,214 bytes)

4. [RFI] FM Wireless Mic on 144.160MHz (score: 1)
Author: Alex <alex@kr1st.com>
Date: Fri, 28 Aug 2020 20:43:05 -0400
Hi there, A local church has a FM microphone that is transmitting on 144.160MHz, and I can also hear it 20kHz above and below that frequency. I'm not sure if 144.160MHz is the principal signal or if
/archives//html/RFI/2020-08/msg00040.html (6,970 bytes)

5. Re: [RFI] FM Wireless Mic on 144.160MHz (score: 1)
Author: Alex <alex@kr1st.com>
Date: Fri, 28 Aug 2020 22:01:26 -0400
I do plan to contact them. I'm just curious if anyone would know the brand or model of a mic that would operate on that frequency. It couldn't hurt to have some extra information, and perhaps suggest
/archives//html/RFI/2020-08/msg00043.html (9,993 bytes)

6. Re: [RFI] FM Wireless Mic on 144.160MHz (score: 1)
Author: Alex <alex@kr1st.com>
Date: Sat, 29 Aug 2020 12:14:18 -0400
That would explain why my signals never bothered them. I'll check 72.08 as soon a it comes back on. Thanks for the suggestion! 73, --Alex KR1ST A quick talk to the pastor, and I helped him change the
/archives//html/RFI/2020-08/msg00051.html (10,267 bytes)

7. Re: [RFI] FM Wireless Mic on 144.160MHz (score: 1)
Author: Alex <alex@kr1st.com>
Date: Sat, 29 Aug 2020 12:18:26 -0400
Good information, Mike. Thanks! 73, --Alex KR1ST Check 72.08 to see if it is the second harmonic of a 72Mhz mic or auditory hearing device. I had one they put in the top of the church, and it could b
/archives//html/RFI/2020-08/msg00052.html (10,402 bytes)

8. Re: [RFI] Raspberry PI / Wall wart RFI (score: 1)
Author: Alex <alex@kr1st.com>
Date: Sat, 03 Apr 2021 11:41:38 -0400
Hi David, Check out Argon One power supplies on Amazon specifically for the Pi. I've tried several power supplies that caused noise on the USB ports to the SDR's that were hanging off the RPi 3B and
/archives//html/RFI/2021-04/msg00017.html (12,709 bytes)

9. Re: [RFI] Old wives tail, or true? (score: 1)
Author: alex@kr1st.com
Date: Thu, 08 Apr 2021 15:20:44 -0400
Let me challenge that test because I'm not convinced that the test is valid. I watched that video and it only shows the signals before and after the choke has been applied, on the outside of the coax
/archives//html/RFI/2021-04/msg00040.html (9,591 bytes)

10. Re: [RFI] Old wives tail, or true? (score: 1)
Author: alex@kr1st.com
Date: Fri, 09 Apr 2021 16:53:19 -0400
Hi Tim, My point is that the test in the video shows that a RF resistor works as a RF resistor, nothing else. It's proving Ohm's law. It doesn't show the effect on the receiver, yet it makes a claim
/archives//html/RFI/2021-04/msg00053.html (12,831 bytes)

11. [RFI] Dancing Carriers (score: 1)
Author: <alex@kr1st.com>
Date: Mon, 19 Dec 2022 14:57:22 -0500
Hi there, I'm trying to figure out what is generating these "dancing carriers" on 2m: https://youtu.be/gKA0P2c-034 I see them om on 6m and 1.25m as well. Has anyone come across this before and can sh
/archives//html/RFI/2022-12/msg00058.html (7,478 bytes)

12. Re: [RFI] Dancing Carriers (score: 1)
Author: <alex@kr1st.com>
Date: Mon, 19 Dec 2022 22:00:24 -0500
Thanks everyone for taking an interest! I know what a SMPS sounds and looks like. In fact, I have one in the shack that I can hear if I take the common mode chokes off it. It will wander up and down
/archives//html/RFI/2022-12/msg00064.html (18,674 bytes)

13. Re: [RFI] Dancing Carriers (score: 1)
Author: <alex@kr1st.com>
Date: Tue, 20 Dec 2022 10:07:01 -0500
Thanks for the article, Ed! Its a good reminder to properly investigate possible noise sources, or at least where it is coming from, before drawing any conclusions. I did get rid of the Shootzu LED b
/archives//html/RFI/2022-12/msg00068.html (26,968 bytes)

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