I bought another one of those Samsung supplies just for the K3S. Jack BMW Motorcycles Chuck KE9UW [email protected]
Sent from my iPad > On Apr 25, 2020, at 11:55 AM, N4ZR <[email protected]> wrote: > > Thanks, Martin - I take it all back - my radio drops the voltage down to > 11.0 volts at 100 watts key down. I'm really surprised, because I figured > that the breakers in the 4005i wouldn't have so much drop.I'll have to figure > out how best to siamese my power supply output so that it goes both to the > RigRunner and directly to the radio. That'll leave the power supply's fusing > as the only protection for the radio, but I guess that's OK. > > 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 12:24 PM, Martin Sole wrote: >> DISP and rotate vfo B for desired measurement option. >> >> Martin, HS0ZED >> >> >> >>> On 25/04/2020 23:19, N4ZR wrote: >>> That's right - my focus was (perhaps too narrowly) on the behavior of the >>> power supply under load, not on losses in the system. Now if someone can >>> just tell me how to read the voltage at the transceiver - I know there's a >>> menu setting somewhere but my radio is fairly early and the manual doesn't >>> say. >>> >>> 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 11:25 AM, hawley, charles j jr wrote: >>>> 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 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