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 <donandde...@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:anyone1...@gmail.com>
Sent: Saturday, April 25, 2020 9:03 AM
To: Bob McGraw K4TAX<mailto:rmcg...@blomand.net>
Cc: Elecraft@mailman.qth.net<mailto:Elecraft@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 <rmcg...@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
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