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Another really good reason to come to the Visailia DX convention this weekend...

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Edward A. Dauer

Another really good reason to come to the Visailia DX convention this weekend...

Guess I have to get an electrician to come out and give me another quote on a dedicated 240 VAC line to the shack.

And all new baluns.

And I have to check if the remote antenna switch relays are rated for more than 600 watts; if not, then replace that.

Several hundreds of feet of coax to replace all of the ’58, right?

Ferrite chokes and bypass caps on the external lighting around the house, and on the outside motion detectors.

Anything I’ve left out?

Ted, KN1CBR

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Kevin - K4VD

Re: Another really good reason to come to the Visailia DX convention this weekend...

Ya. Which bank to rob.

:)

Kev K4VD

On Thu, Apr 20, 2017 at 3:01 PM, Dauer, Edward <[hidden email]> wrote:

> Guess I have to get an electrician to come out and give me another quote
> on a dedicated 240 VAC line to the shack.
>
> And all new baluns.
>
> And I have to check if the remote antenna switch relays are rated for more
> than 600 watts; if not, then replace that.
>
> Several hundreds of feet of coax to replace all of the ’58, right?
>
> Ferrite chokes and bypass caps on the external lighting around the house,
> and on the outside motion detectors.
>
> Anything I’ve left out?
>
> Ted, KN1CBR
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
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>
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> Please help support this email list: http://www.qsl.net/donate.html
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Clay Autery

Re: Another really good reason to come to the Visailia DX convention this weekend...

In reply to this post by Edward A. Dauer

Just so you know.... you CAN do all the work yourself, save a bundle,
AND get it constructed precisely the way YOU want it.

All the rest of that just gives you some fun stuff to do....

There is ALWAYS one more thing you can do... ;)

73,

______________________
Clay Autery, KY5G
MONTAC Enterprises
(318) 518-1389

On 4/20/2017 2:01 PM, Dauer, Edward wrote:

> Guess I have to get an electrician to come out and give me another quote on a dedicated 240 VAC line to the shack.
>
> And all new baluns.
>
> And I have to check if the remote antenna switch relays are rated for more than 600 watts; if not, then replace that.
>
> Several hundreds of feet of coax to replace all of the ’58, right?
>
> Ferrite chokes and bypass caps on the external lighting around the house, and on the outside motion detectors.
>
> Anything I’ve left out?
>
> Ted, KN1CBR

Jeff kb2m

Re: Another really good reason to come to the Visailia DX convention this weekend...

In reply to this post by Edward A. Dauer

Not so fast on the 240 VAC line Ted. The single transistor SPE 1.3K will do
1500 watts on 110v. It will be interesting to see if the Elecraft 1500w AMP
turns out to be a single transistor design...

73 Jeff kb2m

-----Original Message-----
From: Dauer, Edward
Sent: Thursday, April 20, 2017 3:01 PM
To: [hidden email]
Subject: [Elecraft] Another really good reason to come to the Visailia DX
convention this weekend...

Guess I have to get an electrician to come out and give me another quote on
a dedicated 240 VAC line to the shack.

And all new baluns.

And I have to check if the remote antenna switch relays are rated for more
than 600 watts; if not, then replace that.

Several hundreds of feet of coax to replace all of the ’58, right?

Ferrite chokes and bypass caps on the external lighting around the house,
and on the outside motion detectors.

Anything I’ve left out?

Ted, KN1CBR

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Edward A. Dauer

Re: Another really good reason to come to the Visailia DX convention this weekend...

It might, but at typical efficiencies 1500W peak output would be a significant draw on the existing 117 VAC wiring – likely over 20 amps. With the K3/KPA500 as it is I get a just perceptible flicker in the room lights when keying. With a dedicated 240 volt line I could also add a cooler for the drinks.

Ted, KN1CBR

On 4/20/17, 1:53 PM, "Jeff" <[hidden email]> wrote:

Not so fast on the 240 VAC line Ted. The single transistor SPE 1.3K will do
1500 watts on 110v. It will be interesting to see if the Elecraft 1500w AMP
turns out to be a single transistor design...

73 Jeff kb2m

-----Original Message-----
From: Dauer, Edward
Sent: Thursday, April 20, 2017 3:01 PM
To: [hidden email]
Subject: [Elecraft] Another really good reason to come to the Visailia DX
convention this weekend...

Guess I have to get an electrician to come out and give me another quote on
a dedicated 240 VAC line to the shack.

And all new baluns.

And I have to check if the remote antenna switch relays are rated for more
than 600 watts; if not, then replace that.

Several hundreds of feet of coax to replace all of the ’58, right?

Ferrite chokes and bypass caps on the external lighting around the house,
and on the outside motion detectors.

Anything I’ve left out?

Ted, KN1CBR

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Clay Autery

Re: Another really good reason to come to the Visailia DX convention this weekend...

A 120VAC/20A circuit is appropriate for a lot of things.... a 1500W HF
amp is not one of them.

Just do the 240 circuit...

http://montac.com/images/shack_power/outlets.jpg
https://www.dropbox.com/s/67hjpy126yr48sg/2016-08-28%2009.51.14.jpg?dl=0
https://www.dropbox.com/s/16iflr76lvwe88c/2016-08-28%2018.19.38.jpg?dl=0
https://www.dropbox.com/s/bkz0k60nzzsg1y0/2016-07-28%2018.29.45.jpg?dl=0
https://www.dropbox.com/s/92jeckuevh9t8j2/2016-07-27%2015.28.52.jpg?dl=0

Twisted pairs, steel conduit from service to sub, sub, to outlets,
240VAC/60A sub-panel, 8 x 120VAC/20A, 2 x 240VAC/15, 2 x 220VAC/20A

Just find an electrician who will inspect/sign off on the work.

______________________
Clay Autery, KY5G

On 4/20/2017 3:14 PM, Dauer, Edward wrote:

> It might, but at typical efficiencies 1500W peak output would be a significant draw on the existing 117 VAC wiring – likely over 20 amps. With the K3/KPA500 as it is I get a just perceptible flicker in the room lights when keying. With a dedicated 240 volt line I could also add a cooler for the drinks.
>
>
>
> Ted, KN1CBR
>
>
> On 4/20/17, 1:53 PM, "Jeff" <[hidden email]> wrote:
>
> Not so fast on the 240 VAC line Ted. The single transistor SPE 1.3K will do
> 1500 watts on 110v. It will be interesting to see if the Elecraft 1500w AMP
> turns out to be a single transistor design...
>
> 73 Jeff kb2m
>

Ron Wilcox

Re: Another really good reason to come to the Visailia DX convention this weekend...

I was lucky when I put in my 240v for my kenwood 922 a couple of years ago,
a very good friend is a licensed electrician, would not let me pay him very
much, it always pays to be nice to everyone you know

Today is a good day to have a Great Day!
73 Ron Wilcox KF7ZN

On Thu, Apr 20, 2017 at 2:42 PM, Clay Autery <[hidden email]> wrote:

> A 120VAC/20A circuit is appropriate for a lot of things.... a 1500W HF
> amp is not one of them.
>
> Just do the 240 circuit...
>
> http://montac.com/images/shack_power/outlets.jpg
> https://www.dropbox.com/s/67hjpy126yr48sg/2016-08-28%2009.51.14.jpg?dl=0
> https://www.dropbox.com/s/16iflr76lvwe88c/2016-08-28%2018.19.38.jpg?dl=0
> https://www.dropbox.com/s/bkz0k60nzzsg1y0/2016-07-28%2018.29.45.jpg?dl=0
> https://www.dropbox.com/s/92jeckuevh9t8j2/2016-07-27%2015.28.52.jpg?dl=0
>
> Twisted pairs, steel conduit from service to sub, sub, to outlets,
> 240VAC/60A sub-panel, 8 x 120VAC/20A, 2 x 240VAC/15, 2 x 220VAC/20A
>
> Just find an electrician who will inspect/sign off on the work.
>
> ______________________
> Clay Autery, KY5G
>
> On 4/20/2017 3:14 PM, Dauer, Edward wrote:
> > It might, but at typical efficiencies 1500W peak output would be a
> significant draw on the existing 117 VAC wiring – likely over 20 amps.
> With the K3/KPA500 as it is I get a just perceptible flicker in the room
> lights when keying. With a dedicated 240 volt line I could also add a
> cooler for the drinks.
> >
> >
> >
> > Ted, KN1CBR
> >
> >
> > On 4/20/17, 1:53 PM, "Jeff" <[hidden email]> wrote:
> >
> > Not so fast on the 240 VAC line Ted. The single transistor SPE 1.3K
> will do
> > 1500 watts on 110v. It will be interesting to see if the Elecraft
> 1500w AMP
> > turns out to be a single transistor design...
> >
> > 73 Jeff kb2m
> >
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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>
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Ronnie Hull

Re: Another really good reason to come to the Visailia DX convention this weekend...

In reply to this post by Kevin - K4VD

Ted, LOL. Don't let the dragons breathe on ya! Lots of Engineer wannabe's out there!

Sent from my iPhone

> On Apr 20, 2017, at 2:18 PM, Kevin - K4VD <[hidden email]> wrote:
>
> Ya. Which bank to rob.
>
> :)
>
> Kev K4VD
>
>> On Thu, Apr 20, 2017 at 3:01 PM, Dauer, Edward <[hidden email]> wrote:
>>
>> Guess I have to get an electrician to come out and give me another quote
>> on a dedicated 240 VAC line to the shack.
>>
>> And all new baluns.
>>
>> And I have to check if the remote antenna switch relays are rated for more
>> than 600 watts; if not, then replace that.
>>
>> Several hundreds of feet of coax to replace all of the ’58, right?
>>
>> Ferrite chokes and bypass caps on the external lighting around the house,
>> and on the outside motion detectors.
>>
>> Anything I’ve left out?
>>
>> Ted, KN1CBR
>>
>> ______________________________________________________________
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:[hidden email]
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to [hidden email]
> ______________________________________________________________
> Elecraft mailing list
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>
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Chuck Chandler

Re: Another really good reason to come to the Visailia DX convention this weekend...

I work at a university. One day I asked around the Physical Plant if any of
the electricians did side jobs. One stopped by that afternoon and I
explained what I wanted. He quoted me a great price and the next day after
work he and another guy showed up. Less than 45 minutes later I plugged in
the amp.

It is amazing how quickly a pro can do the job. Sometimes it's worth the
money.

73 de Chuck, WS1L
On Thu, Apr 20, 2017 at 16:08 Ronnie Hull <[hidden email]> wrote:

> Ted, LOL. Don't let the dragons breathe on ya! Lots of Engineer wannabe's
> out there!
>
> Sent from my iPhone
>
> > On Apr 20, 2017, at 2:18 PM, Kevin - K4VD <[hidden email]> wrote:
> >
> > Ya. Which bank to rob.
> >
> > :)
> >
> > Kev K4VD
> >
> >> On Thu, Apr 20, 2017 at 3:01 PM, Dauer, Edward <[hidden email]>
> wrote:
> >>
> >> Guess I have to get an electrician to come out and give me another quote
> >> on a dedicated 240 VAC line to the shack.
> >>
> >> And all new baluns.
> >>
> >> And I have to check if the remote antenna switch relays are rated for
> more
> >> than 600 watts; if not, then replace that.
> >>
> >> Several hundreds of feet of coax to replace all of the ’58, right?
> >>
> >> Ferrite chokes and bypass caps on the external lighting around the
> house,
> >> and on the outside motion detectors.
> >>
> >> Anything I’ve left out?
> >>
> >> Ted, KN1CBR
> >>
> >> ______________________________________________________________
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> >> Help: http://mailman.qth.net/mmfaq.htm
> >> Post: mailto:[hidden email]
> >>
> >> This list hosted by: http://www.qsl.net
> >> Please help support this email list: http://www.qsl.net/donate.html
> >> Message delivered to [hidden email]
> > ______________________________________________________________
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:[hidden email]
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to [hidden email]
>
> ______________________________________________________________
> Elecraft mailing list
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>
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> Message delivered to [hidden email]

--
Chuck

Sent from my iPhone

Chuck Chandler
[hidden email]
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Jim Brown-10

Re: Another really good reason to come to the Visailia DX convention this weekend...

In reply to this post by Jeff kb2m

The reason for using 240VAC is to reduce the IR drop in the AC line,
which, BTW, is not sinusoidal, but rather pulses that charge the filter
caps at the peaks of each cycle. So the drop in the wire is even greater
than Ohm's law appliced to a sine wave would predict.

73, Jim K9YC

On Thu,4/20/2017 12:53 PM, Jeff wrote:
> The single transistor SPE 1.3K will do 1500 watts on 110v.

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Josh Fiden

KPA1500 240v (was: Another really good reason to come to the Visailia DX convention this weekend...)

That may not be true for the KPA1500. It's pretty common now, especially
in higher power switchers, to include power factor correction (PFC).
Instead of only charging bulk caps at AC peaks when rectifiers are
forward biased, the rectified incoming line hits a boost converter which
smooths out the cap charging rate.

For example, the Meanwell RSP-3000 48V 62A supply, includes PFC and
claims power factor > 0.95. Without PFC, might be PF=0.6 and certainly
operate as you describe with high current peaks, big IR drop & I2R power
losses.

73,
Josh W6XU

On 4/24/2017 8:51 PM, Jim Brown wrote:
> ...is not sinusoidal, but rather pulses that charge the filter caps at
> the peaks of each cycle. So the drop in the wire is even greater than
> Ohm's law applied to a sine wave would predict.

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David Woolley (E.L)

Re: Another really good reason to come to the Visailia DX convention this weekend...

In reply to this post by Jim Brown-10

I don't believe that it is legal to market a power supply that only
draws current on input peaks in either the USA or EU these days. Power
supplies are supposed to spread the current demand over a significant
part of the cycle. I believe this is done by having a relatively low
value capacitor on the mains side and relying on the switching regulator
to compensate for the wide voltage variations across each cycle. I
believe that even applies to wall warts.

This "power factor correction" will not be perfect, so the peak current
will still be more than for a resistive load.

--
David Woolley K2 06123

On 25/04/17 04:51, Jim Brown wrote:
> The reason for using 240VAC is to reduce the IR drop in the AC line,
> which, BTW, is not sinusoidal, but rather pulses that charge the filter
> caps at the peaks of each cycle. So the drop in the wire is even greater
> than Ohm's law appliced to a sine wave would predict.

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Alan Bloom

Re: Another really good reason to come to the Visailia DX convention this weekend...

The IEC 555 standard (later superseded by IEC 61000-3-2) specifies
allowed harmonic distortion in the power supply current of electronic
equipment:

https://en.wikipedia.org/wiki/IEC_61000-3-2

I believe it is mandatory in Europe and some other countries but not the
United States:

http://www.metlabs.com/emc/emc-testing-requirement-for-it-equipment-varies-by-country/

Alan N1AL

On 04/26/2017 04:04 AM, David Woolley wrote:

> I don't believe that it is legal to market a power supply that only
> draws current on input peaks in either the USA or EU these days. Power
> supplies are supposed to spread the current demand over a significant
> part of the cycle. I believe this is done by having a relatively low
> value capacitor on the mains side and relying on the switching regulator
> to compensate for the wide voltage variations across each cycle. I
> believe that even applies to wall warts.
>
> This "power factor correction" will not be perfect, so the peak current
> will still be more than for a resistive load.
>

Jim Brown-10

Re: Another really good reason to come to the Visailia DX convention this weekend...

In reply to this post by David Woolley (E.L)

David,

From my work on the AES Standards Committee, I know that EU and the UK
is far ahead of NA in this regard. There are no such restrictions in NA.

73, Jim K9YC

On Wed,4/26/2017 4:04 AM, David Woolley wrote:
> I don't believe that it is legal to market a power supply that only
> draws current on input peaks in either the USA or EU these days.
> Power supplies are supposed to spread the current demand over a
> significant part of the cycle.

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Jim Brown-10

Re: KPA1500 240v

In reply to this post by Josh Fiden

Thanks, Josh. I wasn't aware of this relatively new development, which
is a very positive thing.

73, Jim K9YC

On Tue,4/25/2017 4:01 PM, Josh Fiden wrote:

> That may not be true for the KPA1500. It's pretty common now,
> especially in higher power switchers, to include power factor
> correction (PFC). Instead of only charging bulk caps at AC peaks when
> rectifiers are forward biased, the rectified incoming line hits a
> boost converter which smooths out the cap charging rate.
>
> For example, the Meanwell RSP-3000 48V 62A supply, includes PFC and
> claims power factor > 0.95. Without PFC, might be PF=0.6 and certainly
> operate as you describe with high current peaks, big IR drop & I2R
> power losses.