I don't understand this Joe. The KPA500 has an internal PS. A separate
Astron PS serves no purpose for the amp. Do you mean both the amp and
the rig+PS are on the same circuit?
Gus Hansen
KB0YH
On 3/29/2018 6:47 PM, Joe K2UF wrote:
I have been using my KPA500 for over 7 years using an Astr
: [Elecraft] KPA500 power supply
I am ready to order a KPA500 and wonder if anyone out there has regretted
operating one from 115-volt service.
Thanks and 73,
Dennis, at the moment CT9/N7DH
Sent from my iPhone
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[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brian F. Wruble
Sent: Thursday, March 29, 2018 8:38 PM
To: Dennis Haarsager
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 power supply
I use 115. Works fine. It is a very robust device. 73 de Brian W3BW
On Thu, Mar 29, 2018 at 2:19
I use 115. Works fine. It is a very robust device. 73 de Brian W3BW
On Thu, Mar 29, 2018 at 2:19 AM Dennis Haarsager
wrote:
> I am ready to order a KPA500 and wonder if anyone out there has regretted
> operating one from 115-volt service.
>
> Thanks and 73,
> Dennis, at the moment CT9/N7DH
>
>
On 3/29/2018 5:03 AM, David Bunte wrote:
I have operated mine from my 120 volt service in my shack for years with no
issues at all. Most folks I have talked to about it do as well. One friend
used his on 240 and I could detect no difference in performance.
I run mine on 240V in the shack and on
From: elecraft-boun...@mailman.qth.net [elecraft-boun...@mailman.qth.net] on
behalf of Dennis Haarsager [haarsa...@gmail.com]
Sent: Thursday, March 29, 2018 1:17 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] KPA500 power supply
I am ready to order a KPA500 and wonder if anyone out ther
at an optimal condition
beyond +/- 5%
73
Frank
W3LPL
- Original Message -
From: "Joe Subich, W4TV"
To: elecraft@mailman.qth.net
Sent: Thursday, March 29, 2018 1:40:55 PM
Subject: Re: [Elecraft] KPA500 power supply
> (not sure why we call it 220, 'cuz i t
-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Wes Stewart
Sent: Thursday, March 29, 2018 7:41 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 power supply
Not a problem.
Wes N7WS
On 3/28/2018 11:17 PM, Dennis Haarsager wrote:
I am
rsday, March 29, 2018 2:18 AM
To: Elecraft@mailman.qth.net
Subject: [Elecraft] KPA500 power supply
I am ready to order a KPA500 and wonder if anyone out there has regretted
operating one from 115-volt service.
Thanks and 73,
Dennis, at the moment CT9/N7DH
Sent from my i
Stewart
Sent: Thursday, March 29, 2018 7:41 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA500 power supply
Not a problem.
Wes N7WS
On 3/28/2018 11:17 PM, Dennis Haarsager wrote:
> I am ready to order a KPA500 and wonder if anyone out there has regretted
> operating one from 11
> (not sure why we call it 220, 'cuz i think it's actually 230v)
Because the original standard was 110/220V ... as power consumption has
increased and distribution utilities have attempted to reduce losses it
crept up to 112/224, then 115/230, 117/234 and now runs 120/240 in many
locations.
73,
As others have commented, the amp works just fine on 110v. In my case,
every dit and dah resulted in a slight but noticeable dimming of the lights
in my shack and an adjoining room. After putting in a dedicated 220V
circuit, (not sure why we call it 220, 'cuz i think it's actually 230v) no
dimmin
Not a problem.
Wes N7WS
On 3/28/2018 11:17 PM, Dennis Haarsager wrote:
I am ready to order a KPA500 and wonder if anyone out there has regretted
operating one from 115-volt service.
Thanks and 73,
Dennis, at the moment CT9/N7DH
_
Dennis -
I have operated mine from my 120 volt service in my shack for years with no
issues at all. Most folks I have talked to about it do as well. One friend
used his on 240 and I could detect no difference in performance.
I think you will be VERY happy eitherway.
Dave - K9FN
On Thu, Mar 29,
I am ready to order a KPA500 and wonder if anyone out there has regretted
operating one from 115-volt service.
Thanks and 73,
Dennis, at the moment CT9/N7DH
Sent from my iPhone
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Hi Everyone - This thread was closed earlier this week.
73
Eric
List moderator etc.
/elecraft.com/
On 2/1/2017 4:25 PM, Kevin wrote:
It's been that way with PC's and Mac's for 15 years.
Your PC is not truly "off" when you hit the power switch. That is the ATX
specification. To start a PC all
John,
Because after power off, the fans are powered by the charge in the
KPA500 capacitors discharging, I do not think that is a requirement -
but not a bad idea in any case.
73,
Don W3FPR
On 2/1/2017 7:53 PM, John Marvin wrote:
I know this thread is supposed to be closed now, and hopefully
I know this thread is supposed to be closed now, and hopefully this
would be obvious, but you should also wait for the fans to stop before
"pulling the plug". You should always turn the KPA500 off with the
switch (or the KPA utility) first, wait for the fans to stop, then you
can use the back s
It's been that way with PC's and Mac's for 15 years.
Your PC is not truly "off" when you hit the power switch. That is the
ATX specification. To start a PC all that happens is the shorting of two
pins on the motherboard with the switch. There is power on the
motherboard until you reach behind
Dave,
Perhaps you want to turn on your amp manually each time. But what you
may have missed is that 7 watts is doing more than just detecting
whether the power switch on the front is used or not. When the KPA500 is
"off" the RS-232 connection on the back is still live, and there is a
processo
Guys - this is getting beat to death and to be honest, a few of the comments
have strayed outside of our 'keep it respectful' list guidelines.
Let's close the thread at this time.
73,
Eric
/elecraft.com/
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Home:
"Incredibly wasteful" - Seems like a little bit of an overstatement.
That's only 4.968 Kilowatt-Hours a month assuming it is idling 24/7 for
30 days.
For me, that'd be about $0.49 in electricity. At $0.22 a KW-Hr, it'd
still be under a buck per month.
If this is still "incredibly wasteful" then
AD6A wrote:
I thought that maybe there was a supercap or backup battery that kept the
button's electronics alive to perform the ON button function (like TV's
have in them).
Am I missing something?
Didn't it take power to to charge that supercap or backup battery?
Is there really a difference b
Leave it to an environmentalist (I'll spare the engineers) to advocate
the spending of thousands of dollars in redesigning something that can
be fixed with a quick trip to a local hardware store for a $25 (or less)
master kill-switch.
Kent, K9ZTV
There is one thing about the way it works th
Charlie k3ICH
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Guy
Olinger K2AV
Sent: Wednesday, February 01, 2017 7:37 AM
To: Dave AD6A ; Elecraft Reflector
Subject: Re: [Elecraft] KPA500 Power Supply Environmental/Ergonomic Issue
While wit
While without reference to quantities I certainly agree with the sentiment,
but to be focused on a night light level power is kind of like swatting at
gnats while pidgeons are flying around in the kitchen.
Does your attic insulation need replacing. Are all of the light fixtures in
your house conve
Mine has been OFF for a one week vacation once in three or four years since I
built it. I have a nite light that consumes more power.
Sent from my iPhone
...nr4c. bill
> On Jan 31, 2017, at 10:45 PM, Dave AD6A wrote:
>
> I recently added a KPA500 kit for my home station. It went together jus
quot;.
73, Ron AC7AC
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Dave
AD6A
Sent: Tuesday, January 31, 2017 7:45 PM
To: 'Elecraft Reflector'
Subject: [Elecraft] KPA500 Power Supply Environmental/Ergonomic Issue
I recently added a KPA500
I recently added a KPA500 kit for my home station. It went together just
fine, and overall I love it.
There is one thing about the way it works that bugs the engineer and
environmentalist in me.
Before I bought the PA, I thought I'd be able to turn it on/off entirely
using the ON button on the
bject: Re: [Elecraft] KPA500 power supply
Since we are in monsoon season here in AZ - if any storm is in area or
predicted - I disconnect everything - both at tower and at shack wall.
I noticed this morning that when I plug the KPA500 back in -(its on a 240
circuit all by itself) I hear w
Since we are in monsoon season here in AZ - if any storm is in area or
predicted - I disconnect everything - both at tower and at shack wall.
I noticed this morning that when I plug the KPA500 back in -(its on a 240
circuit all by itself) I hear what appears to be an initial transformer
mag
FYI
When I received my KPA500 kit, one of the three U3 leads on the Power Supply
Module was very brittle and broke when I tried to reposition the heat
spreader during installation. I obtained a new U3 and installed it. The
amplifier did not work when the new U3 was installed, and the heat spread
Glad you figured it out Brian. Note that at the bottom of page 7 in the
Owner's manual, immediately after you choose the tap and before you test the
tap setting for the correct voltage, the last step says:
"Replace the top cover before proceeding. An interlock switch prevents
operating the amplifi
Just "finished" building the KPA500 kit and ran the "Test the power supply
voltage." on page 7 of the owner's manual. The result of the HV test is that
the LCD indicates the voltage to be .1, nowhere near the 65-85 indicated as
required.
I've double checked:
- Fuse Block Voltage Selection is set t
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