Tap DISC and rotate the B knob for various including voltage readout Jack BMW Motorcycles Chuck KE9UW [email protected]
Sent from my iPad > On Apr 25, 2020, at 11:19 AM, N4ZR <[email protected]> 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 >>>>>> Post: mailto:[email protected] >>>>>> 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