Fewer power supplies (meaning the switching type) have actual terminal
bolts to use with ring connectors. If the supply doesn't have that type
of connector, then what alternatives are there to being able to use one
supply in a station that has more than one high current rig, (even if
they are not used at the same time) since the connectors on most of
these supplies will take at most only one 10-12 gauge cable?
Ron WA2EIO
On 4/25/2020 10:56 AM, Bob McGraw K4TAX wrote:
Jim et al:
Thank you for confirming exactly what I've written and suggested.
TO ALL........PLEASE do not use power strips to supply DC to your
radio from your power supply. ALWAYS connect the radio direct to the
power supply terminals. The power pole and DC distributions strips
are ok for LED lightning and such but NEVER for anything drawing over
about 2 amps. I don't care what the manufacturer says they are
"rated" for. E = I x R. Every connections adds resistance. Do
the math.
73
Bob, K4TAX
On 4/25/2020 9:32 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]
<mailto:[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]
<mailto:[email protected]>>
Sent: Saturday, April 25, 2020 9:03 AM
To: Bob McGraw K4TAX<mailto:[email protected]
<mailto:[email protected]>>
Cc: [email protected]
<mailto:[email protected]><mailto:[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]
<mailto:[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
>>
>
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