Re: Switch mode PSU

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Re: Switch mode PSU

Iain Haywood
Hi,

Has anyone had any bad experiences using a K3 and a switch mode PSU?.
The SEC-1223 looks great aware some can cause problems..
They say 'Totally noise free', that's some claim..

***
*
--
*Iain G4SGX*
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Re: Switch mode PSU

M0XDF
Iain, I use a Power Mite from Walters & Stanton when not in the shack - is very quiet, both physically and RF wise
73 de M0XDF, K3 #174, P3 #108, KX3 #???

--
It came to me that reform should begin at home, and since that day I have
not had time to remake the world. -Will Durant, historian (1885-1981)

On 10 Sep 2011, at 22:58, Iain Haywood wrote:

> Hi,
>
> Has anyone had any bad experiences using a K3 and a switch mode PSU?.
> The SEC-1223 looks great aware some can cause problems..
> They say 'Totally noise free', that's some claim..

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Re: Switch mode PSU

Chris GM3WOJ
In reply to this post by Iain Haywood
Hello Iain

If running the K3 from home, I would suggest a linear power supply is better than switched-mode,
mainly because a good linear supply should have better regulation, resulting in a cleaner TX signal.

I've used a Watson WM-25 for several years and it is reliable and quiet RF-wise, but at 100W RF output from the K3 the terminal voltage of the PSU drops from 13.8V to about 13.1V.  Add cable and connector losses and the voltage drop at the K3 PA is significant.

I recently purchased an SEC-1223 - it has noticeably better regulation (although still not as good as my large transformer PSU).  I immediately modified the output connectors and added 2 extra decoupling caps across the output. I've recently modified the fan to run continuously, but it is noisy so I'm now going to fit a small switch on the rear panel (Auto/Continuous).

See   http://www.qsl.net/gm3woj/sec1223mod.htm

Of course, not everyone wants to modify a brand-new power supply !

73
Chris
GM3WOJ
www.zk2v.com
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Re: Switch mode PSU

Shel Radin KF0UR
In reply to this post by Iain Haywood
I use the Samlex SEC-1235M with my K3, with no issues or noise detected.

GL,

Shel  KF0UR
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Re: Switch mode PSU

Bruce McLaughlin-2
In reply to this post by M0XDF
I have that power supply, in fact two of them, which I use with the K-3 and
a Flex 5000. If it produces any noise I have never heard it. Both units have
been very reliable and seem to work very well indeed.

Bruce-W8FU

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of David Ferrington,
M0XDF
Sent: Sunday, September 11, 2011 6:43 AM
To: [hidden email]
Cc: Elecraft Reflector
Subject: Re: [Elecraft] Switch mode PSU

Iain, I use a Power Mite from Walters & Stanton when not in the shack - is
very quiet, both physically and RF wise
73 de M0XDF, K3 #174, P3 #108, KX3 #???

--
It came to me that reform should begin at home, and since that day I have
not had time to remake the world. -Will Durant, historian (1885-1981)

On 10 Sep 2011, at 22:58, Iain Haywood wrote:

> Hi,
>
> Has anyone had any bad experiences using a K3 and a switch mode PSU?.
> The SEC-1223 looks great aware some can cause problems..
> They say 'Totally noise free', that's some claim..

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Re: 4W6A Video, count the K3's !

Iain Haywood
In reply to this post by Iain Haywood

Link to 4W6A video via YouTube.

http://www.youtube.com/watch?v=2sIHDCZiwG8&feature=player_embedded 
<http://www.youtube.com/watch?v=2sIHDCZiwG8&feature=player_embedded>

Count the K3's !

Iain G4SGX


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Re: 4W6A Video, count the K3's !

Geoffrey Downs-3
Quite agree Ron, yet this 59/599 thing seems to be deeply ingrained into
dxpeditions and contests these days. Speaking for myself I would far rather
have a true report so I know how I'm getting out to the relevant place at
the relevant time.

73 to all

Geoff
G3UCK

-----Original Message-----
From: Ron D'Eau Claire
Sent: Monday, October 03, 2011 7:05 PM
To: [hidden email]
Subject: Re: [Elecraft] 4W6A Video, count the K3's !

That's great Iain - tnx!

But WHY give someone a "599" report when they have an S1 signal? They made
the contact. They got into the log. That's the goal. Why lie about the
signal strength?

If someone asked about their signal I'd hope they got an honest reply.

(I feel the same way about contests, but the justification there is that a
"signal report" is required by the rules for a valid contact. I've never
seen a rule that it has to be a valid signal report, so it's 599 for anyone
who gets into the log, Hi!)

73,

Ron AC7AC

-----Original Message-----


Link to 4W6A video via YouTube.

http://www.youtube.com/watch?v=2sIHDCZiwG8&feature=player_embedded
<http://www.youtube.com/watch?v=2sIHDCZiwG8&feature=player_embedded>

Count the K3's !

Iain G4SGX

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Re: 4W6A Video, count the K3's !

wayne burdick
Administrator
> WHY give someone a "599" report when they have an S1 signal? They made
> the contact. They got into the log. That's the goal. Why lie about the
> signal strength?

In this context, the signal report has devolved into the equivalent of  
white space. It serves to space the QSOs out far enough to give each  
side a minimal amount of time for logging.

If you'd like to hear honest reports being used, in a context where  
they have meaning, try a QRP contest.

Wayne
N6KR
 
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Re: 4W6A Video, count the K3's !

Tony Estep
In reply to this post by Geoffrey Downs-3
> -----Original Message-----
> From: Ron D'Eau Claire
> ...But WHY give someone a "599" report when they have an S1 signal?....

=========
Ah yes. Actually, it isn't even 599, it's 5nn. If a DXpedition has 50,000
QSOs, you may be sure that every one receives 5nn. There is actually a
reason, of course: it speeds up the run rate. Whether or not that reason is
valid depends on your point of view. It seems absurd to have a QSO whose
entire contents consist of 3 characters that are known in advance, but it's
the way things have evolved. At least one DX mode, JT65, has a different
convention. The exchange is pre-canned, but the reports are valid, expressed
in dBM, and calculated by the software. Whatcha gonna do....?

73,
Tony KT0NY
--
http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352
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Re: 4W6A Video, count the K3's ! and the 599/59 reports

Dick Williams-2
In reply to this post by Geoffrey Downs-3

I think the rationale behind the 599/59 report is in the interest of saving
time and maximizing contacts.  Can you imagine the amount of additional time
that would be required to enter each signal report received in the log;
none the less the number of guys that would request a repeat of the report.
The 599/59 report streamlines the contact, allowing many more contacts per
minute.

That said, I will agree with you for casual contacts,  an honest report
makes a lot more sense and will give you (and the other station) about both
how you each stack up and band conditions.

Dick  K8ZTT

-----Original Message-----
From: [hidden email]
[mailto:[hidden email]] On Behalf Of Geoffrey Downs
Sent: Monday, October 03, 2011 1:19 PM
To: Ron D'Eau Claire; [hidden email]
Subject: Re: [Elecraft] 4W6A Video, count the K3's !

Quite agree Ron, yet this 59/599 thing seems to be deeply ingrained into
dxpeditions and contests these days. Speaking for myself I would far rather
have a true report so I know how I'm getting out to the relevant place at
the relevant time.

73 to all

Geoff
G3UCK

-----Original Message-----
From: Ron D'Eau Claire
Sent: Monday, October 03, 2011 7:05 PM
To: [hidden email]
Subject: Re: [Elecraft] 4W6A Video, count the K3's !

That's great Iain - tnx!

But WHY give someone a "599" report when they have an S1 signal? They made
the contact. They got into the log. That's the goal. Why lie about the
signal strength?

If someone asked about their signal I'd hope they got an honest reply.

(I feel the same way about contests, but the justification there is that a
"signal report" is required by the rules for a valid contact. I've never
seen a rule that it has to be a valid signal report, so it's 599 for anyone
who gets into the log, Hi!)

73,

Ron AC7AC

-----Original Message-----


Link to 4W6A video via YouTube.

http://www.youtube.com/watch?v=2sIHDCZiwG8&feature=player_embedded
<http://www.youtube.com/watch?v=2sIHDCZiwG8&feature=player_embedded>

Count the K3's !

Iain G4SGX

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Re: 4W6A Video, count the K3's !

David Gilbert
In reply to this post by Geoffrey Downs-3

Have you guys actually thought this through??

In most cases, the DX is trying to work as many people as possible as
fast as they can.  Giving you an "accurate" signal report requires them
to decide how strong you are (takes a small amount of time) as well as
manually type into the logger a different number than the default (takes
a lot of time, relatively speaking, to tab and type).  Everyone else in
the pileup is going to be glad you didn't get your "accurate" report.

As for that "accurate" report, in most cases you aren't going to have a
clue what kind of antenna the DX is using or even what direction it may
be pointing at the moment, so signal strength is utterly meaningless.  
The DX isn't "lying" about anything.  You are simply deluding yourself
if you think their report means anything other than that you were
strong/readable enough to get through the pileup, which you should have
recognized by that point anyway.  If you want a number different than
599, make up your own and log it ... it will easily have every bit as as
much relevance under those conditions.

Dave   AB7E



On 10/3/2011 12:18 PM, Geoffrey Downs wrote:

> Quite agree Ron, yet this 59/599 thing seems to be deeply ingrained into
> dxpeditions and contests these days. Speaking for myself I would far rather
> have a true report so I know how I'm getting out to the relevant place at
> the relevant time.
>
> 73 to all
>
> Geoff
> G3UCK
>
> -----Original Message-----
> From: Ron D'Eau Claire
> Sent: Monday, October 03, 2011 7:05 PM
> To: [hidden email]
> Subject: Re: [Elecraft] 4W6A Video, count the K3's !
>
> That's great Iain - tnx!
>
> But WHY give someone a "599" report when they have an S1 signal? They made
> the contact. They got into the log. That's the goal. Why lie about the
> signal strength?
>
> If someone asked about their signal I'd hope they got an honest reply.
>
> (I feel the same way about contests, but the justification there is that a
> "signal report" is required by the rules for a valid contact. I've never
> seen a rule that it has to be a valid signal report, so it's 599 for anyone
> who gets into the log, Hi!)
>
> 73,
>
> Ron AC7AC
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Re: 4W6A Video, count the K3's !

gdaught6
In reply to this post by wayne burdick
Wayne wrote...

> In this context, the signal report has devolved into the equivalent of  
> white space. It serves to space the QSOs out far enough to give each  
> side a minimal amount of time for logging.

To that I'd add that it's not really a signal report at all.  It's a timing and brain
adjustment prosign... "This is what I sound like, and here comes the ACTUAL part of
the exchange that counts".

Just like "QRL?" actually means "I'm about to call CQ on this frequency in 0.1
seconds or so."

73,



George T Daughters, K6GT
CU in the California QSO Party (CQP)
October 1-2, 2011


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Re: 4W6A Video, count the K3's ! and the 599/59 reports

w0mu
In reply to this post by Dick Williams-2
Curious that signal reports comes up today.  I worked 7Z1HL today and
received a 329 report.  He got back a 339 report.

The county hunter folks tend to give more realistic reports on a regular
basis.

In contests they mean nothing.

Mike W0MU

J6/W0MU November 21 - December 1 2011 CQ WW DX CW
W0MU-1 CC Cluster w0mu.net


On 10/3/2011 1:30 PM, Dick Williams wrote:

> I think the rationale behind the 599/59 report is in the interest of saving
> time and maximizing contacts.  Can you imagine the amount of additional time
> that would be required to enter each signal report received in the log;
> none the less the number of guys that would request a repeat of the report.
> The 599/59 report streamlines the contact, allowing many more contacts per
> minute.
>
> That said, I will agree with you for casual contacts,  an honest report
> makes a lot more sense and will give you (and the other station) about both
> how you each stack up and band conditions.
>
> Dick  K8ZTT
>
> -----Original Message-----
> From: [hidden email]
> [mailto:[hidden email]] On Behalf Of Geoffrey Downs
> Sent: Monday, October 03, 2011 1:19 PM
> To: Ron D'Eau Claire; [hidden email]
> Subject: Re: [Elecraft] 4W6A Video, count the K3's !
>
> Quite agree Ron, yet this 59/599 thing seems to be deeply ingrained into
> dxpeditions and contests these days. Speaking for myself I would far rather
> have a true report so I know how I'm getting out to the relevant place at
> the relevant time.
>
> 73 to all
>
> Geoff
> G3UCK
>
> -----Original Message-----
> From: Ron D'Eau Claire
> Sent: Monday, October 03, 2011 7:05 PM
> To: [hidden email]
> Subject: Re: [Elecraft] 4W6A Video, count the K3's !
>
> That's great Iain - tnx!
>
> But WHY give someone a "599" report when they have an S1 signal? They made
> the contact. They got into the log. That's the goal. Why lie about the
> signal strength?
>
> If someone asked about their signal I'd hope they got an honest reply.
>
> (I feel the same way about contests, but the justification there is that a
> "signal report" is required by the rules for a valid contact. I've never
> seen a rule that it has to be a valid signal report, so it's 599 for anyone
> who gets into the log, Hi!)
>
> 73,
>
> Ron AC7AC
>
> -----Original Message-----
>
>
> Link to 4W6A video via YouTube.
>
> http://www.youtube.com/watch?v=2sIHDCZiwG8&feature=player_embedded
> <http://www.youtube.com/watch?v=2sIHDCZiwG8&feature=player_embedded>
>
> Count the K3's !
>
> Iain G4SGX
>
> ______________________________________________________________
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Re: 4W6A Video, count the K3's !

daleputnam
In reply to this post by David Gilbert

Because without an rst, however it is derived, the qsl isn't valid for dxcc.

--...   ...--
Dale - WC7S in Wy
 > From: [hidden email]

> To: [hidden email]; [hidden email]
> Date: Mon, 3 Oct 2011 20:19:22 -0700
> Subject: Re: [Elecraft] 4W6A Video, count the K3's !
>
> Of course I thought it through Dave. In the video you'll hear the DX
> operation say, "I gave him an 599 but he was an S1".
>
> My point was "why bother with a signal report at all if the station doesn't
> ask for it".
>
> Ron AC7AC
>
> -----Original Message-----
>
> Have you guys actually thought this through??
>
> In most cases, the DX is trying to work as many people as possible as
> fast as they can.  Giving you an "accurate" signal report requires them
> to decide how strong you are (takes a small amount of time) as well as
> manually type into the logger a different number than the default (takes
> a lot of time, relatively speaking, to tab and type).  Everyone else in
> the pileup is going to be glad you didn't get your "accurate" report.
>
> As for that "accurate" report, in most cases you aren't going to have a
> clue what kind of antenna the DX is using or even what direction it may
> be pointing at the moment, so signal strength is utterly meaningless.  
> The DX isn't "lying" about anything.  You are simply deluding yourself
> if you think their report means anything other than that you were
> strong/readable enough to get through the pileup, which you should have
> recognized by that point anyway.  If you want a number different than
> 599, make up your own and log it ... it will easily have every bit as as
> much relevance under those conditions.
>
> Dave   AB7E
>
> ______________________________________________________________
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> Post: mailto:[hidden email]
>
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> Please help support this email list: http://www.qsl.net/donate.html
     
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Re: 4W6A Video, count the K3's !

w0mu
I don't believe this is correct.  I could not find anything in the DXCC
rules that say RST is required.  They sure did not care what my signal
report was on the application and I don't think LOTW even cares about
the signal report.

Most awards require an exchange of information and the callsign is
probably the most important piece of information the other side needs to
get.

I guess we use 59 because people would flip out if the DX station just
came back and said W0MU, W1AW and W0ABC you are in the log and that was it.

Mike W0MU

J6/W0MU November 21 - December 1 2011 CQ WW DX CW
W0MU-1 CC Cluster w0mu.net


On 10/3/2011 9:36 PM, Dale Putnam wrote:

> Because without an rst, however it is derived, the qsl isn't valid for dxcc.
>
> --...   ...--
> Dale - WC7S in Wy
>   >  From: [hidden email]
>> To: [hidden email]; [hidden email]
>> Date: Mon, 3 Oct 2011 20:19:22 -0700
>> Subject: Re: [Elecraft] 4W6A Video, count the K3's !
>>
>> Of course I thought it through Dave. In the video you'll hear the DX
>> operation say, "I gave him an 599 but he was an S1".
>>
>> My point was "why bother with a signal report at all if the station doesn't
>> ask for it".
>>
>> Ron AC7AC
>>
>> -----Original Message-----
>>
>> Have you guys actually thought this through??
>>
>> In most cases, the DX is trying to work as many people as possible as
>> fast as they can.  Giving you an "accurate" signal report requires them
>> to decide how strong you are (takes a small amount of time) as well as
>> manually type into the logger a different number than the default (takes
>> a lot of time, relatively speaking, to tab and type).  Everyone else in
>> the pileup is going to be glad you didn't get your "accurate" report.
>>
>> As for that "accurate" report, in most cases you aren't going to have a
>> clue what kind of antenna the DX is using or even what direction it may
>> be pointing at the moment, so signal strength is utterly meaningless.
>> The DX isn't "lying" about anything.  You are simply deluding yourself
>> if you think their report means anything other than that you were
>> strong/readable enough to get through the pileup, which you should have
>> recognized by that point anyway.  If you want a number different than
>> 599, make up your own and log it ... it will easily have every bit as as
>> much relevance under those conditions.
>>
>> Dave   AB7E
>>
>> ______________________________________________________________
>> 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
>    
> ______________________________________________________________
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Re: 4W6A Video, count the K3's !

David Gilbert
In reply to this post by David Gilbert

Simple ... because DXCC and most contest sponsors specifically require
that a signal report be sent and logged by both parties.  Neither cares
whether it was accurate, though, and most of the time it is never
checked.  When was the last time a DXCC card checker asked to see your log?

Dave   AB7E



On 10/3/2011 8:19 PM, Ron D'Eau Claire wrote:

> Of course I thought it through Dave. In the video you'll hear the DX
> operation say, "I gave him an 599 but he was an S1".
>
> My point was "why bother with a signal report at all if the station doesn't
> ask for it".
>
> Ron AC7AC
>
> -----Original Message-----
>
> Have you guys actually thought this through??
>
> In most cases, the DX is trying to work as many people as possible as
> fast as they can.  Giving you an "accurate" signal report requires them
> to decide how strong you are (takes a small amount of time) as well as
> manually type into the logger a different number than the default (takes
> a lot of time, relatively speaking, to tab and type).  Everyone else in
> the pileup is going to be glad you didn't get your "accurate" report.
>
> As for that "accurate" report, in most cases you aren't going to have a
> clue what kind of antenna the DX is using or even what direction it may
> be pointing at the moment, so signal strength is utterly meaningless.
> The DX isn't "lying" about anything.  You are simply deluding yourself
> if you think their report means anything other than that you were
> strong/readable enough to get through the pileup, which you should have
> recognized by that point anyway.  If you want a number different than
> 599, make up your own and log it ... it will easily have every bit as as
> much relevance under those conditions.
>
> Dave   AB7E
>
>
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Re: 4W6A Video, count the K3's !

David Gilbert


I stand corrected ... I also can find no DXCC requirement that a signal
report be sent/ received, or logged.

Dave   AB7E



On 10/3/2011 11:52 PM, David Gilbert wrote:

> Simple ... because DXCC and most contest sponsors specifically require
> that a signal report be sent and logged by both parties.  Neither cares
> whether it was accurate, though, and most of the time it is never
> checked.  When was the last time a DXCC card checker asked to see your log?
>
> Dave   AB7E
>
>
>
> On 10/3/2011 8:19 PM, Ron D'Eau Claire wrote:
>> Of course I thought it through Dave. In the video you'll hear the DX
>> operation say, "I gave him an 599 but he was an S1".
>>
>> My point was "why bother with a signal report at all if the station doesn't
>> ask for it".
>>
>> Ron AC7AC
>>
>> -----Original Message-----
>>
>> Have you guys actually thought this through??
>>
>> In most cases, the DX is trying to work as many people as possible as
>> fast as they can.  Giving you an "accurate" signal report requires them
>> to decide how strong you are (takes a small amount of time) as well as
>> manually type into the logger a different number than the default (takes
>> a lot of time, relatively speaking, to tab and type).  Everyone else in
>> the pileup is going to be glad you didn't get your "accurate" report.
>>
>> As for that "accurate" report, in most cases you aren't going to have a
>> clue what kind of antenna the DX is using or even what direction it may
>> be pointing at the moment, so signal strength is utterly meaningless.
>> The DX isn't "lying" about anything.  You are simply deluding yourself
>> if you think their report means anything other than that you were
>> strong/readable enough to get through the pileup, which you should have
>> recognized by that point anyway.  If you want a number different than
>> 599, make up your own and log it ... it will easily have every bit as as
>> much relevance under those conditions.
>>
>> Dave   AB7E
>>
>>
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>
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> Please help support this email list: http://www.qsl.net/donate.html
>
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