Re: [Elecraft] 2T Gen problem

[Jeremy Jones]

Hi Don,

I didn’t have a .01uf capacitor on hand, so I swapped C2 and C6.  The 700Hz 
tone continued to work, while 1900Hz still had nothing.  

Jeremy

> On Nov 1, 2017, at 2:50 PM, Don Wilhelm  wrote:
> 
> Jeremy,
> 
> No, I am saying replace it with another 0.01uF.
> What is suspected is that the one in your 2T-Gen is on the low side of 
> tolerance, and putting in one closer to the nominal value or slightly higher 
> may make it oscillate.
> 
> 73,
> Don W3FPR
> 
> On 11/1/2017 11:45 AM, Jeremy Jones wrote:
>> Don,
>> 
>> C2 is already .01uF.  Are you suggesting I try a .1uF?
>> 
> 

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 with P3 Transmit Monitor

[James Wilson]

I realize that, Bill but, Elecraft also makes a monitor accessory
for the P3. It should be useable with the KPA1500 but
appears not to be the case.

Jim - W4RKS



On Thu, Nov 2, 2017 at 5:54 PM, Nr4c  wrote:

> The ATU is built-in.
>
> Sent from my iPhone
> ...nr4c. bill
>
>
> > On Nov 2, 2017, at 2:14 PM, RIchard Williams via Elecraft <
> elecraft@mailman.qth.net> wrote:
> >
> > James,
> > Am not sure why you need a tuner between the radio and the amp in the
> first place??  As of now, I have my K3S or K3 driving a Alpha 9500.  I
> never have used the tuner in either when driving the amp?  I assume the
> KPA9500 will have a 52 ohm input, and you would not need a tuner.
> > Dick, K8ZTT
> >
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 with P3 Transmit Monitor

[Nr4c]

The ATU is built-in. 

Sent from my iPhone
...nr4c. bill


> On Nov 2, 2017, at 2:14 PM, RIchard Williams via Elecraft 
>  wrote:
> 
> James,
> Am not sure why you need a tuner between the radio and the amp in the first 
> place??  As of now, I have my K3S or K3 driving a Alpha 9500.  I never have 
> used the tuner in either when driving the amp?  I assume the KPA9500 will 
> have a 52 ohm input, and you would not need a tuner.
> Dick, K8ZTT
> 
>  From: James Wilson 
> To: Elecraft  
> Sent: Thursday, November 2, 2017 11:54 AM
> Subject: [Elecraft] KPA1500 with P3 Transmit Monitor
> 
> Looking at a draft of the KPA1500 amplifier, it appears
> that the only place to install  a TxMon or Wattmeter coupler
> is at the  -  output  -  of the built-in tuner.
> 
> At that point, it will always show the SWR of the
> coax feedline, not the SWR that the amplifier "sees" as
> adjusted by the built-in tuner.
> 
> Or, is there a coupler built-in inside the KPA1500 ?
> 
> What am I missing?
> 
> Jim - W4RKS
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to richarddw1...@yahoo.com
> 
> 
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to n...@widomaker.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 with P3 Transmit Monitor

[Ron D'Eau Claire]

Hi James: That's a very, very old and outdated draft. In those earlier
drafts we simply used rough version of the block diagram as a "filler"
illustration. In most, the ATU does not even appear. 

I don't have any control over which drafts are passed around. You might
check with whoever sent you that version for the latest, dated October 16. 

73, Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Wilson
Sent: Thursday, November 2, 2017 1:45 PM
To: Elecraft
Subject: [Elecraft] KPA1500 with P3 Transmit Monitor

Ron D'Eau Claire wrote:

I presume that by "draft" you are looking at a prelim copy of the KPA1500
Owner's manual.
---
Yes, Ron. KAP1500 Owner's Manual Revision A1 (Draft) dated August 9, 2017.

To further simplify its block diagram the signal path is like this:

TRANSCEIVER (external) --> AMPLIFIER --> INTERNAL SWR BRIDGE --> ATU -->
ANTENNA SYSTEM (external)

The SWR briege in the KPA1500 will report the SWR the amplifier "sees" going
into the ATU. As you know, the point of the ATU is to ensure the amplifier
itself is feeding a 52 ohm non-reactive load which is expressed as an SWR in
the link between the amp and the ATU.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html Message
delivered to r...@elecraft.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K3 and Expert 1k

[Don Wilhelm]

Martin,

I have not yet seen a response on the reflector.  I cannot comment on 
the crackling noise, but on the ALC question, the answer is NO ALC.
Although you might want to connect the ALC cable so the amplifier can 
shut down the driving transceiver in case of an amplifier fault, set the 
power level in the K3 so that no ALC is developed in normal operation.


Using the amplifier's ALC to control the drive from the transceiver is a 
recipe for overload and distortion - no matter what claims to the 
contrary might be made by the amplifier manufacturer.


The K3/K3S has a menu setting - PWR SET - that allows the power to be 
set per band which can be useful when driving an amplifier.  See the 
menu listing on page 58 of the K3 manual and also see the manual 
External ALC setup and Per-Band Power Control on page 27.


That may or may not get rid of the noise, but is the proper way to drive 
an amplifier (any amplifier).


73,
Don W3FPR



On 11/2/2017 5:42 AM, Martin wrote:


So is there a recipe for a K3 working together with a Expert 1k?
To ALC or Not to ALC? Max. Power IN? Any settings in the K3? Any 
settings in the amp we overlooked?

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] KPA1500 with P3 Transmit Monitor

[James Wilson]

Ron D'Eau Claire wrote:

I presume that by "draft" you are looking at a prelim copy of the KPA1500
Owner's manual.
---
Yes, Ron. KAP1500 Owner's Manual Revision A1 (Draft)
dated August 9, 2017.

To further simplify its block diagram the signal path is like this:

TRANSCEIVER (external) --> AMPLIFIER --> INTERNAL SWR BRIDGE --> ATU -->
ANTENNA SYSTEM (external)

The SWR briege in the KPA1500 will report the SWR the amplifier "sees" going
into the ATU. As you know, the point of the ATU is to ensure the amplifier
itself is feeding a 52 ohm non-reactive load which is expressed as an SWR in
the link between the amp and the ATU.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 with P3 Transmit Monitor

[Ron D'Eau Claire]

I presume that by "draft" you are looking at a prelim copy of the KPA1500
Owner's manual.

To further simplify its block diagram the signal path is like this:

TRANSCEIVER (external) --> AMPLIFIER --> INTERNAL SWR BRIDGE --> ATU -->
ANTENNA SYSTEM (external) 

The SWR briege in the KPA1500 will report the SWR the amplifier "sees" going
into the ATU. As you know, the point of the ATU is to ensure the amplifier
itself is feeding a 52 ohm non-reactive load which is expressed as an SWR in
the link between the amp and the ATU. 

I doubt if you'll find a way to 'break in' to the link since the SWR and
Power output from the amplifier itself is already a part of the basic
measurements that is reported by the KPA1500.

You are quite right that putting a coupler at the Antenna output of the
KPA1500 (and so the output of the built in ATU) will simply report the SWR
the antenna system (including feeder) presents to the KPA1500. 

Of course if the ATU is in Bypass the internal SWR measurement will show
that of the antenna system since the ATU is no longer in the circuit. That
only occurs when the SWR presented by the antenna system is low enough to
feed directly. 

73, Ron AC7AC

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Wilson
Sent: Thursday, November 2, 2017 10:54 AM
To: Elecraft
Subject: [Elecraft] KPA1500 with P3 Transmit Monitor

Looking at a draft of the KPA1500 amplifier, it appears that the only place
to install  a TxMon or Wattmeter coupler is at the  -  output  -  of the
built-in tuner.

At that point, it will always show the SWR of the coax feedline, not the SWR
that the amplifier "sees" as adjusted by the built-in tuner.

Or, is there a coupler built-in inside the KPA1500 ?

What am I missing?

Jim - W4RKS

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] KX2, N1MM+ and WKUSB

[Chuck Guenther]

I'm having problems setting up my KX2 with N1MM+ for the upcoming ARRL 
CW Sweepstakes contest.  Can only get the WinKey to key using VFO B.  
N1MM+ thinks my KX2 is in Split mode when it is not, and vice versa.


All working correctly using my K3, and the K3 will be my default if I 
can't get the KX2 setup in time.


Any pointers would be appreciated!

73  Chuck Guenther, NI0C

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 with P3 Transmit Monitor

[Bob McGraw K4TAX]

Nah, I read it wrong. 

Bob, K4TAX


Sent from my iPhone

> On Nov 2, 2017, at 1:25 PM, Gordon LaPoint  wrote:
> 
> I must be missing something here.   I don't see where the original poster had 
> anything to do with a tuner between the K3 and the KPA1500.   He wanted to 
> hook his P3 TX monitor input to the output of the KPA1500 amp, before the amp 
> tuner.  Or maybe I misunderstood the original post.
> Gordon - N1MGO
> 
>> On 11/02/2017 02:20 PM, Bob McGraw K4TAX wrote:
>> Most authorities I read and follow strongly suggest one NOT use a tuner 
>> between the radio and the amp.
>> 
>> This "old wives tail" goes back to the time many to most early tube type 
>> grounded grid amps did not have a tuned input.  Seems that hams today choose 
>> to believe and practice old and outdated methodology {largely because 
>> someone said so}  as opposed to learning and using current and correct 
>> methods.
>> 
>> 73
>> 
>> Bob, K4TAX
>> 
>> 
>> 
>>> On 11/2/2017 1:14 PM, RIchard Williams via Elecraft wrote:
>>> James,
>>> Am not sure why you need a tuner between the radio and the amp in the first 
>>> place??  As of now, I have my K3S or K3 driving a Alpha 9500.  I never have 
>>> used the tuner in either when driving the amp?  I assume the KPA9500 will 
>>> have a 52 ohm input, and you would not need a tuner.
>>> Dick, K8ZTT
>>> 
>>>   From: James Wilson 
>>>  To: Elecraft 
>>>  Sent: Thursday, November 2, 2017 11:54 AM
>>>  Subject: [Elecraft] KPA1500 with P3 Transmit Monitor
>>>Looking at a draft of the KPA1500 amplifier, it appears
>>> that the only place to install  a TxMon or Wattmeter coupler
>>> is at the  -  output  -  of the built-in tuner.
>>> 
>>> At that point, it will always show the SWR of the
>>> coax feedline, not the SWR that the amplifier "sees" as
>>> adjusted by the built-in tuner.
>>> 
>>> Or, is there a coupler built-in inside the KPA1500 ?
>>> 
>>> What am I missing?
>>> 
>>> Jim - W4RKS
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft@mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to richarddw1...@yahoo.com
>>> 
>>> 
>>> __
>>> Elecraft mailing list
>>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>>> Help: http://mailman.qth.net/mmfaq.htm
>>> Post: mailto:Elecraft@mailman.qth.net
>>> 
>>> This list hosted by: http://www.qsl.net
>>> Please help support this email list: http://www.qsl.net/donate.html
>>> Message delivered to rmcg...@blomand.net
>> 
>> 
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to gordon.lapo...@gmail.com
> 
> 
> -- 
> Gordon - N1MGO
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to rmcg...@blomand.net
> 


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 with P3 Transmit Monitor

[Gordon LaPoint]

I must be missing something here.   I don't see where the original 
poster had anything to do with a tuner between the K3 and the KPA1500.   
He wanted to hook his P3 TX monitor input to the output of the KPA1500 
amp, before the amp tuner.  Or maybe I misunderstood the original post.

Gordon - N1MGO

On 11/02/2017 02:20 PM, Bob McGraw K4TAX wrote:
Most authorities I read and follow strongly suggest one NOT use a 
tuner between the radio and the amp.


This "old wives tail" goes back to the time many to most early tube 
type grounded grid amps did not have a tuned input.  Seems that hams 
today choose to believe and practice old and outdated methodology 
{largely because someone said so}  as opposed to learning and using 
current and correct methods.


73

Bob, K4TAX



On 11/2/2017 1:14 PM, RIchard Williams via Elecraft wrote:

James,
Am not sure why you need a tuner between the radio and the amp in the 
first place??  As of now, I have my K3S or K3 driving a Alpha 9500.  
I never have used the tuner in either when driving the amp?  I assume 
the KPA9500 will have a 52 ohm input, and you would not need a tuner.

Dick, K8ZTT

   From: James Wilson 
  To: Elecraft 
  Sent: Thursday, November 2, 2017 11:54 AM
  Subject: [Elecraft] KPA1500 with P3 Transmit Monitor
Looking at a draft of the KPA1500 amplifier, it appears
that the only place to install  a TxMon or Wattmeter coupler
is at the  -  output  -  of the built-in tuner.

At that point, it will always show the SWR of the
coax feedline, not the SWR that the amplifier "sees" as
adjusted by the built-in tuner.

Or, is there a coupler built-in inside the KPA1500 ?

What am I missing?

Jim - W4RKS
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to richarddw1...@yahoo.com


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to rmcg...@blomand.net



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to gordon.lapo...@gmail.com



--
Gordon - N1MGO

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] KPA1500 with P3 Transmit Monitor

[James Wilson]

Dick,
I agree completely. Perhaps I was not clear. The P3 coupler normally goes -
not between the K3 and the KPA - but between the KPA and the tuner so that
It shows
the "adjusted" SWR as "seen" by the KPA.

The KPA1500 has a tuner built-into the same case.

Jim - W4RKS

--
Original message:

Am not sure why you need a tuner between the radio and the amp in the first
place??  As of now, I have my K3S or K3 driving a Alpha 9500.  I never have
used the tuner in either when driving the amp?  I assume the KPA9500 will
have a 52 ohm input, and you would not need a tuner.

Dick, K8ZTT
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 with P3 Transmit Monitor

[Bob McGraw K4TAX]

Most authorities I read and follow strongly suggest one NOT use a tuner 
between the radio and the amp.


This "old wives tail" goes back to the time many to most early tube type 
grounded grid amps did not have a tuned input.  Seems that hams today 
choose to believe and practice old and outdated methodology {largely 
because someone said so}  as opposed to learning and using current and 
correct methods.


73

Bob, K4TAX



On 11/2/2017 1:14 PM, RIchard Williams via Elecraft wrote:

James,
Am not sure why you need a tuner between the radio and the amp in the first 
place??  As of now, I have my K3S or K3 driving a Alpha 9500.  I never have 
used the tuner in either when driving the amp?  I assume the KPA9500 will have 
a 52 ohm input, and you would not need a tuner.
Dick, K8ZTT

   From: James Wilson 
  To: Elecraft 
  Sent: Thursday, November 2, 2017 11:54 AM
  Subject: [Elecraft] KPA1500 with P3 Transmit Monitor

Looking at a draft of the KPA1500 amplifier, it appears

that the only place to install  a TxMon or Wattmeter coupler
is at the  -  output  -  of the built-in tuner.

At that point, it will always show the SWR of the
coax feedline, not the SWR that the amplifier "sees" as
adjusted by the built-in tuner.

Or, is there a coupler built-in inside the KPA1500 ?

What am I missing?

Jim - W4RKS
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to richarddw1...@yahoo.com



__

Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to rmcg...@blomand.net



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] KPA1500 with P3 Transmit Monitor

[James Wilson]

Thanks Dick,

I understand that but it seems that the P3 monitor

will only be useful for the waveform display - unless

a connector for the P3 is added to the KPA1500 box.

Certainly not a deal breaker but just an observation.

Looking forward to KPA1500's shipping.

Jim - W4RKS

-

Previous messages:

--

There is a coupler built into the amplifier.  It's necessary to implement
ATU tuning.

The SWR the PA sees is displayed on SWR LEDs on the front panel, on a couple
of LCD "status" pages, and is available via the programming interface, where
it can be observed on the KPA1500 Utility's "operate" page.

73 de Dick, K6KR


-Original Message-
From: elecraft-bounces at mailman.qth.net

[mailto:elecraft-bounces at mailman.qth.net
] On Behalf Of James
Wilson
Sent: Thursday, November 2, 2017 10:54
To: Elecraft http://mailman.qth.net/mailman/listinfo/elecraft>>
Subject: [Elecraft] KPA1500 with P3 Transmit Monitor

Looking at a draft of the KPA1500 amplifier, it appears that the only place
to install  a TxMon or Wattmeter coupler is at the  -  output  -  of the
built-in tuner.

At that point, it will always show the SWR of the coax feedline, not the SWR
that the amplifier "sees" as adjusted by the built-in tuner.

Or, is there a coupler built-in inside the KPA1500 ?

What am I missing?

Jim - W4RKS
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 with P3 Transmit Monitor

[RIchard Williams via Elecraft]

James,
Am not sure why you need a tuner between the radio and the amp in the first 
place??  As of now, I have my K3S or K3 driving a Alpha 9500.  I never have 
used the tuner in either when driving the amp?  I assume the KPA9500 will have 
a 52 ohm input, and you would not need a tuner.
Dick, K8ZTT

  From: James Wilson 
 To: Elecraft  
 Sent: Thursday, November 2, 2017 11:54 AM
 Subject: [Elecraft] KPA1500 with P3 Transmit Monitor
   
Looking at a draft of the KPA1500 amplifier, it appears
that the only place to install  a TxMon or Wattmeter coupler
is at the  -  output  -  of the built-in tuner.

At that point, it will always show the SWR of the
coax feedline, not the SWR that the amplifier "sees" as
adjusted by the built-in tuner.

Or, is there a coupler built-in inside the KPA1500 ?

What am I missing?

Jim - W4RKS
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to richarddw1...@yahoo.com


   
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] KPA1500 with P3 Transmit Monitor

[Dick Dievendorff]

There is a coupler built into the amplifier.  It's necessary to implement
ATU tuning. 

The SWR the PA sees is displayed on SWR LEDs on the front panel, on a couple
of LCD "status" pages, and is available via the programming interface, where
it can be observed on the KPA1500 Utility's "operate" page.

73 de Dick, K6KR


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James Wilson
Sent: Thursday, November 2, 2017 10:54
To: Elecraft 
Subject: [Elecraft] KPA1500 with P3 Transmit Monitor

Looking at a draft of the KPA1500 amplifier, it appears that the only place
to install  a TxMon or Wattmeter coupler is at the  -  output  -  of the
built-in tuner.

At that point, it will always show the SWR of the coax feedline, not the SWR
that the amplifier "sees" as adjusted by the built-in tuner.

Or, is there a coupler built-in inside the KPA1500 ?

What am I missing?

Jim - W4RKS
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html Message
delivered to d...@elecraft.com

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] KPA1500 with P3 Transmit Monitor

[James Wilson]

Looking at a draft of the KPA1500 amplifier, it appears
that the only place to install  a TxMon or Wattmeter coupler
is at the  -  output  -  of the built-in tuner.

At that point, it will always show the SWR of the
coax feedline, not the SWR that the amplifier "sees" as
adjusted by the built-in tuner.

Or, is there a coupler built-in inside the KPA1500 ?

What am I missing?

Jim - W4RKS
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] P3 SVGA macro editor

[K8TE]

Me too!

Additionally, I think it would be great to have the ability to change, save,
and read all settings, similar to K3_Ez.  I've just spent 45 minutes walking
a friend through various P3 settings.  It would have been nice if I could
have e-mail him a file to upload into his P3.

The same would be great for all Elecraft hardware which is electronically
accessible!

73, Bill, K8TE



--
Sent from: http://elecraft.365791.n2.nabble.com/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 encoder shaft and new knob

[Martin Sole]

Thanks Don,

I received only the one felt washer. I'll request the remaining 2 :)

At initial test I had the 'not tuning problem' and fixed it with a shim 
of stiff paper. That was despite the flushest of cutting both on the 
encoder and control boards. That's a tight squeeze in there but all good 
now except for the free-wheeling knob which incidentally is a big 
improvement on the earlier one I think. A nice classy look n feel.


Thanks

Martin, HS0ZED



On 02/11/2017 14:22, Don Wilhelm wrote:

Martin,

How many felt washers did you receive with your K2 kit? - it should 
have been 3.

If you had only one, contact Elecraft support to get the other two.

With the new encoder, you must flush cut (yes right down into the 
solder) not only the leads on the encoder board, but also the Control 
Board in the area where the encoder board could make contact.
It may also be a good idea to add an insulating material like fish 
paper or a piece of plastic between the two boards.


73,
Don W3FPR

On 11/2/2017 6:35 AM, Martin Sole wrote:
I'm in the finishing straight for the build of my nice shiny new K2, 
it's been great fun and I'm looking forward to using it soon.


The new vfo encoder shaft does seem to be a bit too long, either that 
or the hole drilled in the knob is not sufficiently deep enough. I 
suppose the simplest solution is to add extra padding between the 
knob and panel. I'm just a bit concerned it will look a little odd 
with 5mm of wadding in there.


Is there a consensus on a best method to resolve this little dilemma?


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 and KX3 with A/B switch

[Don Wilhelm]

Graziano,

How are you measuring the power output in SSB?  If an external 
wattmeter, you are likely driving it to full PEP power.


I test the SSB operation on each K2 I repair to be certain the PEP is 
the same as the CW response at full power.  I use an oscilloscope to 
determine that.  An external wattmeter will only show about 50 to 60% of 
the full PEP.


Run the SSB C menu parameter to 3:1 and try it.  If you are using an 
electret microphone (Elecraft or Icom), the SSB A parameter at 1 should 
be sufficient, but if using a dynamic microphone, a setting of 2 is good 
for the higher output microphones but 3 may be needed for those with low 
output.


73,
Don W3FPR

On 11/2/2017 7:24 AM, Graziano Roccon wrote:


The K2 have only SSB and CW.
Althoug in CW is the better, in SSB maybe not.

I agree with you that "strangely" the audio from the K2 is nicer despite the 
tight filter, but i still find difficult to push out ALL the watt in SSB.
Comparing the K2 to my other radios, included the K3s, i can see that the K2 
never reach the maximum output power in SSB. I tried different microphone and 
settings, but i always get no more than 60-70% of the maximum power in the best 
conditions.
This is the only point of regret with my beloved K2.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 and KX3 with A/B switch

[Ignacy Misztal]

Thank you for the comments.

The pop goes away with AGC OFF. It also goes away with AGS PLS set OFF.
Perhaps PLS OFF will  be my new default setting, unless in heavy QRN.

Now, I will have easy time partying with K2. BTW, it goes to Z35M, who
should be "Elecraft hero". He made about half a million,QSOs mostly
portable  using K1. To many, he put ZA on the map.See his QRZ web page.

Ignacy, NO9E

On Thu, Nov 2, 2017 at 12:46 AM, Wayne Burdick  wrote:

> Ignacy,
>
> I’ve never noticed the KX3’s AGC pumping, so I suspect something else.
> Small speaker aside, it should sound every bit as good as the analog K2,
> just with additional filtering features (thanks to the KX3’s DSP).
>
> Try turning AGC off. If there really were pumping, this would stop it. If
> it doesn’t stop, there’s something else going on. Do you have NB or NR
> turned on? Also try setting RX SHFT to 8.0 to see if you have noise getting
> into the KX3’s power supply lead. Baseband (RX SHFT=0) would be more
> affected by this in some cases.
>
> 73,
> Wayne
> N6KR
>
>
>
> > On Nov 1, 2017, at 7:17 PM, Ignacy  wrote:
> >
> > I am going to sell my K2 as it is gathering dust since KX3 came on
> board. But
> > for probably the last time I put them on the A/B switch. Here is what I
> have
> > found.
> >
> > 1. K2 has good speaker. KX3 has lousy speaker. Nothing strange as K2 is
> > bigger.
> >
> > For comparisons I attached KX3 to an external amplified speaker.
> >
> > 2. A weak CW signal in K2 is natural and easy copying. You can make it
> sound
> > similar in KX3 by playing PBT and sometimes  engaging APF.
> >
> > 3. in SSB, K2 sounds nice and mellow although the bandwidth is limited.
> KX3
> > sounds tiring because of AGC pumping. I fiddled with HOLD, ATTACH, etc.,
> > with little effect.
> >
> > K2 has to go because it is too big. But it is a fine radio.
> >
> > Has anybody found AGC in KX3 harsh? Any way to do something about it
> other
> > than running RF gain?
> >
> > Ignacy, NO9E
> >
> >
> >
> > --
> > Sent from: http://elecraft.365791.n2.nabble.com/
> > __
> > Elecraft mailing list
> > Home: http://mailman.qth.net/mailman/listinfo/elecraft
> > Help: http://mailman.qth.net/mmfaq.htm
> > Post: mailto:Elecraft@mailman.qth.net
> >
> > This list hosted by: http://www.qsl.net
> > Please help support this email list: http://www.qsl.net/donate.html
> > Message delivered to n...@elecraft.com
>
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 and KX3 with A/B switch

[Graziano Roccon]

Hello,

My KX3 doesn't show the problem you describe, maybe you need to give a look to 
your settings, but you already received some answers from the major experts.
I also own a K2 full optional and i think is the best radio for CW, the K2 have 
the best signal/noise ratio i ever heard and the sound is smooth and natural, 
very pleasant.
I have also a K3s, i love Elecraft rigs, but to me, the more fascinating one 
remain the K2.
I am strong Elecrafter here in Italy, Eric knows this ;-)

I prefer the KX3 outside the shack, is complete and can do everything, from 
phone to cw to digital.
The K2 have only SSB and CW.
Althoug in CW is the better, in SSB maybe not.

I agree with you that "strangely" the audio from the K2 is nicer despite the 
tight filter, but i still find difficult to push out ALL the watt in SSB.
Comparing the K2 to my other radios, included the K3s, i can see that the K2 
never reach the maximum output power in SSB. I tried different microphone and 
settings, but i always get no more than 60-70% of the maximum power in the best 
conditions.
This is the only point of regret with my beloved K2.
Is not very important because i mostly do CW and in CW the K2 is a top 
performer, but i would like to find a solutions before of after.
I can also add that i already done all the adjustent suggested for filters 
tuning and BFO alignments, Gary (from Elecraft) knows how much time we spent on 
it ;-)

Best regards, to all, Graziano IW2NOY (W2NOY)
 

> Il 2 novembre 2017 alle 3.17 Ignacy  ha scritto:
> 
> 
> I am going to sell my K2 as it is gathering dust since KX3 came on board. But
> for probably the last time I put them on the A/B switch. Here is what I have
> found. 
> 
> 1. K2 has good speaker. KX3 has lousy speaker. Nothing strange as K2 is
> bigger. 
> 
> For comparisons I attached KX3 to an external amplified speaker.
> 
> 2. A weak CW signal in K2 is natural and easy copying. You can make it sound
> similar in KX3 by playing PBT and sometimes  engaging APF. 
> 
> 3. in SSB, K2 sounds nice and mellow although the bandwidth is limited. KX3
> sounds tiring because of AGC pumping. I fiddled with HOLD, ATTACH, etc.,
> with little effect.
> 
> K2 has to go because it is too big. But it is a fine radio.
> 
> Has anybody found AGC in KX3 harsh? Any way to do something about it other
> than running RF gain?
> 
> Ignacy, NO9E
> 
> 
> 
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to grazi...@roccon.com
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] K2 encoder shaft and new knob

[Don Wilhelm]

Martin,

How many felt washers did you receive with your K2 kit? - it should have 
been 3.

If you had only one, contact Elecraft support to get the other two.

With the new encoder, you must flush cut (yes right down into the 
solder) not only the leads on the encoder board, but also the Control 
Board in the area where the encoder board could make contact.
It may also be a good idea to add an insulating material like fish paper 
or a piece of plastic between the two boards.


73,
Don W3FPR

On 11/2/2017 6:35 AM, Martin Sole wrote:
I'm in the finishing straight for the build of my nice shiny new K2, 
it's been great fun and I'm looking forward to using it soon.


The new vfo encoder shaft does seem to be a bit too long, either that or 
the hole drilled in the knob is not sufficiently deep enough. I suppose 
the simplest solution is to add extra padding between the knob and 
panel. I'm just a bit concerned it will look a little odd with 5mm of 
wadding in there.


Is there a consensus on a best method to resolve this little dilemma?

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K2 encoder shaft and new knob

[Martin Sole]

I'm in the finishing straight for the build of my nice shiny new K2, 
it's been great fun and I'm looking forward to using it soon.


The new vfo encoder shaft does seem to be a bit too long, either that or 
the hole drilled in the knob is not sufficiently deep enough. I suppose 
the simplest solution is to add extra padding between the knob and 
panel. I'm just a bit concerned it will look a little odd with 5mm of 
wadding in there.


Is there a consensus on a best method to resolve this little dilemma?

Thanks

Martin, HS0ZED


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K3 and Expert 1k

[Martin]

Elecrafters,
my buddy Erwin runs a SPE Expert 1K and a K3. When he transmits through 
the Amp, his signal is clean on his frequency, but one can hear the 
transmission as crackling noise below and above his frequency, even with 
low driving power. Thats the best i can describe it. We sure want to 
find out how to prevent this.

This has been a topic a while ago on this list, but i can't find it.

So is there a recipe for a K3 working together with a Expert 1k?
To ALC or Not to ALC? Max. Power IN? Any settings in the K3? Any 
settings in the amp we overlooked?


Hints welcome.


--

Ohne CW ist es nur CB..

73, Martin DM4iM
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com