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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[RFI\]\s+Spectrum\s+Cable\s+Boxes\s*$/: 20 ]

Total 20 documents matching your query.

1. [RFI] Spectrum Cable Boxes (score: 1)
Author: "Anthony (N2KI)" <n2ki.ham@gmail.com>
Date: Thu, 10 Oct 2019 19:54:55 -0400
Hello folks, Anyone on here have experience RF shielding a Spectrum Cable box? I have tried all sorts of RF chokes (Material 31 1-300mHz) on the power, HDMI and coax inputs with very little success.
/archives//html/RFI/2019-10/msg00005.html (6,928 bytes)

2. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: "wa2lbi@gmail.com" <wa2lbi@gmail.com>
Date: Thu, 10 Oct 2019 20:38:55 -0400
Tony,I have a Spectrum cable/DVR box in the room directly above the shack.  My 75 meter dipole is about 30' away and only 20' or so high.  The multi band dipole is about 50' from the house at the sam
/archives//html/RFI/2019-10/msg00006.html (8,149 bytes)

3. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Thu, 10 Oct 2019 20:36:25 -0700
On 10/10/2019 4:54 PM, Anthony (N2KI) wrote: So I am fairly confident this is an RF shielding/filtering issue with the boxes. In speaking with Spectrum, I could not reach anyone in a technical depart
/archives//html/RFI/2019-10/msg00007.html (7,788 bytes)

4. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: James Gordon Beattie Jr <w2ttt@att.net>
Date: Fri, 11 Oct 2019 13:11:43 +0000 (UTC)
Jim, Try running the cable box from a battery and isolated from the power grid.  There may be a switched mode power supply on that device or another one on another customer that is creating and condu
/archives//html/RFI/2019-10/msg00008.html (8,418 bytes)

5. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: Clay Autery <KY5G@montac.com>
Date: Fri, 11 Oct 2019 17:31:15 -0500
I can GUARANTEE you that that box is using a switch mode power supply (SMPS). IF it is external, it is ALMOST a trivial exercise to determine the proper voltage and amperage requirements and supply i
/archives//html/RFI/2019-10/msg00009.html (8,372 bytes)

6. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: Jim Brown <jim@audiosystemsgroup.com>
Date: Fri, 11 Oct 2019 17:19:45 -0700
Yes, it will -- but the problem he's trying to solve is RFI TO the Spectrum box. The good news is that the solutions are the same. 73, Jim K9YC _______________________________________________ RFI mai
/archives//html/RFI/2019-10/msg00010.html (8,004 bytes)

7. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: Clay Autery <KY5G@montac.com>
Date: Fri, 11 Oct 2019 20:49:25 -0500
Roger that, Jim.  Sorry, I wasn't right on point.  I should have been paying closer attention. ______________________ Clay Autery, KY5G (318) 518-1389 Yes, it will -- but the problem he's trying to s
/archives//html/RFI/2019-10/msg00011.html (8,545 bytes)

8. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>
Date: Mon, 14 Oct 2019 21:14:45 -0400
Likewise I run the legal limit with the cable box within 2' of the amp and about 40 to 80' from the antennas and no discernible problems. Sounds like there may be a grounding problem. (earth, or RF)
/archives//html/RFI/2019-10/msg00019.html (9,780 bytes)

9. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: "Jim Miller" <JimMiller@STL-OnLine.Net>
Date: Thu, 17 Oct 2019 20:35:18 -0500
I got called out on a DFing trip because all of a sudden several people in a section of a subdivision couldn't get their garage doors to open one Sunday morning. By the time I got there the count was
/archives//html/RFI/2019-10/msg00027.html (9,309 bytes)

10. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: "Anthony (N2KI)" <n2ki.ham@gmail.com>
Date: Sat, 26 Oct 2019 18:14:13 -0400
I have choked of all cables on in multiple locations and the box still "explodes". I have no access to a 3A 12vDC power supply to try and swap to see if that makes a difference. Regards, Anthony (N2K
/archives//html/RFI/2019-10/msg00028.html (10,109 bytes)

11. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: James Gordon Beattie Jr <w2ttt@att.net>
Date: Sun, 27 Oct 2019 04:52:29 +0000 (UTC)
Anthony, Will the cable box run on a 12VDC battery? 73, Gordon Beattie, W2TTT 201.314.6964 Get Outlook for Android On Sat, Oct 26, 2019 at 6:14 PM -0400, "Anthony (N2KI)" <n2ki.ham@gmail.com> wrote:
/archives//html/RFI/2019-10/msg00029.html (10,981 bytes)

12. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: "Anthony (N2KI)" <n2ki.ham@gmail.com>
Date: Sun, 10 Nov 2019 21:22:54 -0500
Update to the Spectrum Cable box testing, What I have tried. - RF Chokes (Material 31) on power, HDMI & RG6 - DID NOT FIX RFI - Tightly wrapping the entire box in foil. - DID NOT FIX RFI - Putting th
/archives//html/RFI/2019-11/msg00021.html (12,026 bytes)

13. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: "Jamie WW3S" <ww3s@zoominternet.net>
Date: Mon, 11 Nov 2019 02:27:12 +0000
get a small Astron linear supply, preferably old stock, if newer, make sure the green wire inside is connected to the chassis by scraping the paint of so it make contact to bare metal, and while you
/archives//html/RFI/2019-11/msg00022.html (12,561 bytes)

14. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: "Anthony (N2KI)" <n2ki.ham@gmail.com>
Date: Sun, 10 Nov 2019 21:43:27 -0500
Just tested with a commercial 13.8v 8a supply. No RFI issue even at 1200 watts output CW. I will monitor going forward. Thanks! Regards, Anthony (N2KI) On Sun, Nov 10, 2019 at 9:27 PM Jamie WW3S <ww3
/archives//html/RFI/2019-11/msg00023.html (14,829 bytes)

15. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: "qrv@kd4e.com" <qrv@kd4e.com>
Date: Sun, 10 Nov 2019 21:28:35 -0500
What about a battery with an analog trickle charger? The analog trickle charger should be RF-quiet. And wouldn't the battery isolate any PS RFI? David KD4E Update to the Spectrum Cable box testing, W
/archives//html/RFI/2019-11/msg00024.html (7,824 bytes)

16. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: JW via RFI <rfi@contesting.com>
Date: Mon, 11 Nov 2019 03:12:14 +0000 (UTC)
So. the trickle charger gets unclipped each time he operates? The analog trickle charger should be RF-quiet. And wouldn't the battery isolate any PS RFI? David KD4E __________________________________
/archives//html/RFI/2019-11/msg00025.html (8,916 bytes)

17. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: Michael Germino <ad6aa@sbcglobal.net>
Date: Mon, 11 Nov 2019 03:18:07 +0000 (UTC)
Jameco Reliapro ST-123A Wall Adapter Transformer 12 VDC 3 Amp 36 Watt 3.8"H x 2.1"W x 1.6"D Screw Terminal Output Amazon has one for $17.95Not a switching power Supply, but have no first hand knowled
/archives//html/RFI/2019-11/msg00026.html (8,842 bytes)

18. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: "Tim Duffy" <k3lr@k3lr.com>
Date: Sun, 10 Nov 2019 22:26:51 -0500
I have Spectrum cable modem and cable TV boxes here at K3LR. All use the Astron RS-4A linear power supplies https://www.dxengineering.com/parts/asr-rs-4a No RFI problems at all 73 Tim K3LR get a smal
/archives//html/RFI/2019-11/msg00027.html (14,709 bytes)

19. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: Gary Johnson <gwj@wb9jps.com>
Date: Sun, 10 Nov 2019 20:10:33 -0800
That Jameco *is* a switcher. Note the small size and wide input voltage range. Linear adapters simply arent being offered new anymore. Gary NA6O _______________________________________________ RFI ma
/archives//html/RFI/2019-11/msg00028.html (7,491 bytes)

20. Re: [RFI] Spectrum Cable Boxes (score: 1)
Author: James Gordon Beattie Jr <w2ttt@att.net>
Date: Tue, 12 Nov 2019 03:28:09 +0000 (UTC)
That's the ticket! Linear, aka iron power supplies are best. 73, Gordon, W2TTT 201.314.6964 Get Outlook for Android On Sun, Nov 10, 2019 at 10:27 PM -0500, "Tim Duffy" <k3lr@k3lr.com> wrote: I have S
/archives//html/RFI/2019-11/msg00030.html (15,179 bytes)

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