I did notice that the post mentioned that his power supply dipped in voltage but as for preventing issues due to low voltage, it's not your voltmeter on the power supply that is the proper indicator. It is the voltage on the input to the K3 that you should be noting. It's available on the menu and displays in the VFO B area on the screen.
Jack BMW Motorcycles Chuck KE9UW [email protected] Sent from my iPad > On Apr 25, 2020, at 9:51 AM, N4ZR <[email protected]> wrote: > > For whatever it may be worth, my K3 is run through a West Mountain RigRunner > 4005i, and the voltmeter on my SEC 1235M doesn't even flicker when I go > key-down at 100 watts. > > I'm wondering if a 25-amp-rated supply (perhaps a little optimistic) might be > to blame. My K3 draws 20.2 amps at 100 watts key down. > > 73, Pete N4ZR > Check out the Reverse Beacon Network > at <http://reversebeacon.net>, now > spotting RTTY activity worldwide. > For spots, please use your favorite > "retail" DX cluster. > >> On 4/25/2020 10:32 AM, Jim Rhodes wrote: >> I had been using a power pole strip to power everything. After seeing some >> discussion on this topic some time ago I found that in the string of 3 >> power pole connections in my setup at the time I was seeing around a 1 volt >> drop in the voltage on the K3 metering between receive and 100 watts >> keydown. That voltage drop was confirmed by my VOM so I wired the rig >> directly to the supply and the voltage drop was less than 0.25 volts. That >> is the way my rigs and VHF/UHF amps will be connected from now on with only >> a fuse inline. The low current stuff will stay on the power pole strip >> where they do just fine lighting up lights and stuff. >> >>> On Sat, Apr 25, 2020, 09:16 Don Schroder <[email protected]> wrote: >>> >>> Bob, >>> >>> Is it safe to run my K2 using Anderson Power Pole connections, and/or >>> RigRunner equipment? >>> >>> For my info, what is the reason for NOT using them? >>> >>> I’m rewiring, and I want to do it right! >>> >>> Gunny, KE0PVQ >>> >>> Sent from Mail<https://go.microsoft.com/fwlink/?LinkId=550986> for >>> Windows 10 >>> >>> From: Gmail<mailto:[email protected]> >>> Sent: Saturday, April 25, 2020 9:03 AM >>> To: Bob McGraw K4TAX<mailto:[email protected]> >>> Cc: [email protected]<mailto:[email protected]> >>> Subject: Re: [Elecraft] K3S poor CW keying further investigation >>> >>> Nuts, just measure the drop between radio and power supply see if it is >>> reasonable. Mine is 0.25 volts when transmitting. I run 14.0 out of supply. >>> Ray >>> W8LYJ >>> >>> Sent from my iPad >>> >>>> On Apr 25, 2020, at 07:48, Bob McGraw K4TAX <[email protected]> wrote: >>>> >>>> As to the RigRunner power pole strip.........PUT IT IN THE TRASH where >>> it belongs. NEVER NEVER NEVER use a power distribution strip to power a >>> 100 watt radio. ALWAYS connect the radio direct to the power supply >>> terminals. NO exceptions! >>>> 73 >>>> >>>> Bob, K4TAX >>>> >>>> >>>>> On 4/25/2020 7:13 AM, Chuck Chandler wrote: >>>>> After more checking, I suspect the internal 100W amp is the common >>> factor >>>>> in the poor keying characteristics I'm seeing and hearing about from my >>>>> rig. I am trying to determine if my power supply is doing it's job. >>>>> >>>>> I'm using a TenTec 963 switching supply rated at 25A continuous. At >>> rest >>>>> the K3S panel display shows 13.6V, with full power key down it dips to >>> 11.5 >>>>> or so. This seems like a lot. I'm running the power cable thru a >>>>> RigRunner Powerpole strip. If I can dig out another power supply from >>> the >>>>> packed boxes I can wire the K3S directly to the supply. >>>>> >>>>> Is 11.5V at key down enough to cause the slow rise time being reported? >>>>> >>>>> 73 de Chuck, WS1L >>>>> >>>> ______________________________________________________________ >>>> Elecraft mailing list >>>> Home: >>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0 >>>> Help: >>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0 >>>> Post: mailto:[email protected] >>>> >>>> This list hosted by: >>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0 >>>> Please help support this email list: >>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0 >>>> Message delivered to [email protected] >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: >>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=ungsv%2Fp%2BttMdFv1pen3cIlx6vdo6lgKCjXn4vvBnIgI%3D&reserved=0 >>> Help: >>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=FSSRNX8wMACqNS%2BQ1XwUQPLzjJH3fCS8HnUiSFvElgk%3D&reserved=0 >>> Post: mailto:[email protected] >>> >>> This list hosted by: >>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2F&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=UUAA8WvEIp3eK5GZeXhlS1iw3IbbbjccJYX9thNdwmo%3D&reserved=0 >>> Please help support this email list: >>> https://eur04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C851d0737e47443117ae408d7e9216b51%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C637234202046704357&sdata=El%2B%2B%2FjuWPWWAcDHpBWYkGsrqtVtvC10pTrCu8QLCTrQ%3D&reserved=0 >>> Message delivered to [email protected] >>> >>> ______________________________________________________________ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:[email protected] >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> Message delivered to [email protected] >> ______________________________________________________________ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:[email protected] >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> Message delivered to [email protected] > ______________________________________________________________ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:[email protected] > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to [email protected] ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [email protected]
