[CQ-Contest] RF tripping UPS
dick.w7zr at gmail.com
Fri May 31 11:09:00 EDT 2019
Checked the electrical panel and all grounds were tight.
Checked the ground bus and all attached items for tightness.
I ran a check on 80m and it seems it is quite frequency sensitive. I was
able to run 1kw+ starting at low end *until* I got to 3.7mhz. Then the UPS
started clicking. BTW I am using a KPA1500 amp with the tuner showing
1.1:1 on that frequency and all others.
Ran the same checks on 10m and today no problems.
Maybe more ferrite on the 80M coax and the feed into the shack from the 6x2
antenna switch that is located at base of tower.
Thanks for looking.
*W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU,
J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV
*Be joyful in hope, patient in affliction, faithful in prayer*
On Fri, May 31, 2019 at 6:40 AM Richard Zalewski <dick.w7zr at gmail.com>
> Thanks for the replies and suggestions.
> The crazy part is nothing in the station physically has changed.
> I have a bus bar on the back of the operating desk and everything is
> bonded to it. (Will check for tightness today). Then there is a single
> conductor to 2 ground rods. One of them I have to water (I am in AZ) the
> other is next to a sprinkler so it stays moist.
> I have used multiple clamp on ferrite type 43 material where I can not
> wrap the conductor around a larger core.
> I am going into the power panel today and check the tightness of all the
> ground connections.
> The UPS I am using is not a top of the line but as I said I have used this
> model for years. When this started acting up I replaced it with a similar
> I will advise if I find anything but sure appreciate the suggestions.
> *W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU,
> J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV
> *Be joyful in hope, patient in affliction, faithful in prayer*
> On Fri, May 31, 2019 at 5:15 AM Keith Dutson <kdutson at sbcglobal.net>
>> I would guess you have a faulty UPS, or extreme RF leakage problem. I use
>> CyberPower and APC units, and they have never tripped because of RF.
>> 73, Keith NM5G
>> -----Original Message-----
>> From: CQ-Contest <cq-contest-bounces at contesting.com> On Behalf Of Richard
>> Sent: Thursday, May 30, 2019 6:20 PM
>> To: Cq-Contest <cq-contest at contesting.com>
>> Subject: [CQ-Contest] RF tripping UPS
>> Looking for a solution to stop RF from tripping UPS into standby mode or
>> even turning it off completely. This happens at 600-900w level. Showed
>> first and mostly on 80m but just happened on 10m. Two separate antennas.
>> I have put ferrite on everything in and out of the UPS. I have changed
>> physical location and put it on a different AC outlet.
>> Any thoughts?
>> *W7ZR* ex:5C5Z, CN2ZR, K2JSP, W6SBZ, W7KXR, K9ZIJ, W9KNF, W0KDF, W0MQU,
>> J68ZR, KC6ZR, PJ4/W7ZR, KH2,W7ZR, KH6/W7ZR, V31ZR, VK4AAZ, XE2DV
>> *Be joyful in hope, patient in affliction, faithful in prayer*
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