[Elecraft] K3S poor CW keying further investigation
Jim Rhodes
jimk0xu at gmail.com
Sat Apr 25 10:32:31 EDT 2020
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 <donanddeena at hotmail.com> 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:anyone1545 at gmail.com>
> Sent: Saturday, April 25, 2020 9:03 AM
> To: Bob McGraw K4TAX<mailto:rmcgraw at blomand.net>
> Cc: Elecraft at mailman.qth.net<mailto:Elecraft at mailman.qth.net>
> 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 <rmcgraw at blomand.net> 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:Elecraft at mailman.qth.net
> >
> > 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 anyone1545 at gmail.com
> ______________________________________________________________
> 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:Elecraft at mailman.qth.net
>
> 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 donanddeena at hotmail.com
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft at mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to jimk0xu at gmail.com
More information about the Elecraft
mailing list