Re: [Elecraft] K3S - Locking power output to band and mode.

[Jim - N4ST]

Marv,

I don't think so.
I use the M1-M4 macros to set the mode (CW, Data, USB, LSB) and
simultaneously set the power and bandwidth for that mode.

_ 
73,
Jim - N4ST

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
marvwhee...@nwlink.com
Sent: Sunday, January 21, 2018 22:48
To: Elecraft@mailman.qth.net
Subject: [Elecraft] K3S - Locking power output to band and mode.

Thanks in advance.

 

Is there a way to lock the out put  in each mode> I know there is a menu
item to lock it per band.

 

Thanks, es 73

 

Marv Wheeler

 

Yesterday is history, Tomorrow a mystery, Today a gift.

 

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[Elecraft] K3S - Locking power output to band and mode.

[marvwheeler]

Thanks in advance.

 

Is there a way to lock the out put  in each mode> I know there is a menu
item to lock it per band.

 

Thanks, es 73

 

Marv Wheeler

 

Yesterday is history, Tomorrow a mystery, Today a gift.

 

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Re: [Elecraft] AF Balance

[Carl Clawson]

Yes, but...

I believe the original question was about L/R balance while listening to
the main Rx only. This got kicked around on the wish list years ago as
there are many of us with one weak ear. I don't recall hearing that it was
ever done. Don't need a knob for it ... it could go in a menu because I'd
never change it if I could just make my right ear about an S-Unit louder
when using phones.

Some headsets have a balance knob but my favorite ones don't.

73, Carl WS7L


On Sat, Jan 20, 2018 at 2:26 PM, Don Wilhelm  wrote:

> Ken,
>
> In addition, make sure you have Speakers set to 2.
>
> 73,
> Don W3FPR
>
> On 1/20/2018 4:00 PM, Ken Widelitz wrote:
>
>> Is there a way to balance AF volume on just the main RX. My left ear is
>> shot.
>>
>>
>> 73, Ken, K6LA / VY2TT
>>
>>
>>
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[Elecraft] Elecraft CW Net Report

[kevinr]

Good Evening,

   Never foreshadow a power outage!  This one lasted from well before 
dawn until a few minutes ago.  The high winds overnight blew trees into 
the feeder lines from Bonneville Dam.  Required outage supplies: Coleman 
gas, large package of AA batteries, a Mini Mag-light in my pocket all 
day long.  Oh, and firewood. Instead of starting with magazines I went 
straight to the tensor book and worked problems.  The stillness and 
gloom lends itself to study.  Once my eyes started crossing I switched 
to writing software the old fashioned way - on paper.  Now I get to 
edit, compile, and run them.  Those routines should be faster now.


  Sorry I could not run either net but I don't have sufficient 
alternative power to run the radios at more than a few watts. Hopefully 
the weather will be less inclement next week and the ionosphere fully 
recharged.


73,

 Kevin.  KD5ONS

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[Elecraft] KE7X print book 15% off at Lulu

[Cady, Fred]

www.lulu.com 15% discount on print books until Jan 22 (or 
maybe through Jan22?).  Does not apply to KE7X books carried by Elecraft.

The Lulu code is JAN15.

73,

Fred KE7X

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[Elecraft] T1 ATU parts question

[Scott via Elecraft]

I'm taking a parts inventory and noticed that I've been provided with a 78L06 
instead of an 78L05.   Is this expected or should I contact Elecraft for the 
specified part?

Thanks,Scott N1ST
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Re: [Elecraft] K3 Power Reading/SWR/ALC Problem

[Paul Christensen]

>"From experience, I'd say nearby lightning strikes would be the 
culprit."

Highly unlikely.  Clear skies for days.  No lightning activity here in a long 
time here.  Two years ago, I had a similar problem with static-damaged Schottky 
diodes in an Alpha 9500.  Those diodes are used to sample RF for the amp's EBS 
circuit.  

>"I strongly urge everyone to use protection devices on all 
coax and balanced lines at the point where the feed lines and rotor 
lines enter the house.  I prefer Polyphaser devices."

Already installed and we never disconnect at the remote site.  The site 
conforms to Motorola R56.  No lightning-induced damage in almost 3 years of 
operation in a very lightning-intense location near the Okefenokee Swamp.   
High power Alpha-Delta arc-plug devices are located at the master ground bus 
where all coaxial and control lines enter the station.  Low power (200W) 
Alpha-Delta devices are installed between the K3 and amplifiers.  The 
Alpha-Delta devices use field-replaceable arc-plugs.  Like Polyphaser, these 
devices are intended to mitigate lightning-induced charge, not necessarily 
antenna static charge.  Still, it's possible that one or more of the 
Alpha-Delta arc plugs has failed, leaving the K3 vulnerable to static damage. 

In looking at the K3 SWR bridge circuit, both sides of the Schottky diodes have 
a reasonably low impedance to chassis ground.  One side is slightly less than 
22K-ohm.  However, it may not be low enough. To supplement protection, I may 
add a pi-section 1 mH choke between T3 and the chassis.  It's the same choke 
used as a static drain in the Alpha 89 and 87A amplifiers to prevent 
static-induced PIN diode damage, and the type used at the output of many vacuum 
tube amps to function as a safety device in the event a plate blocking 
capacitor fails in a shorted condition that would otherwise allow high-voltage 
on the output network, transmission line, and antenna.

Although fun to discuss and contemplate fixes, it's conjecture until validated 
and the root-cause may not be related to any of this.

Paul, W9AC

ly failed.

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Re: [Elecraft] K3 Power Reading/SWR/ALC Problem

[Don Wilhelm]

Knut and all,

Yes, BUT...
Lightning is a static charge which *will* produce transients in the 
antenna system.  As will wind static, rain static and snow static. 
Large voltages can build up on the antenna and feedline, and will remain 
until dissipated.  Sort of like a charged capacitor that holds that 
charge until dissipated.  Some of those events can produce very large 
voltages.


So yes, I believe it is a matter of semantics.  Charges of any kind on 
the antenna feedline can cause damage.  The K3 has more protection than 
the K2/KPA100, but that does not make it immune to all events.


Have you ever touched across the terminals of a feedline after a nearby 
lightning event and felt a 'tickle' or even worse?  I have, and it is 
not nice.  A bleeder resistor of 2500 ohms to 50k across the feedline 
will bleed off a static charge in short order.


Even with a lightning suppression device in the feedline, there is still 
a threshold voltage that it responds to.  At voltages less than that 
threshold, the protection device will not be of any assistance in 
bleeding off the charge.


73,
Don W3FPR

On 1/21/2018 4:42 PM, ab2tc wrote:

Hi Don and all,

I really don't understand why static build up on the antenna should be a
problem with the K3. Due to the (good) design of the SWR bridge (a two
transformer design with a voltage transformer right across the output) the
antenna port presents a dead short circuit at DC both in receive and
transmit. I just verified this with an ohm-meter (in receive only - no need
to check in transmit since the SWR bridge is surely present then - don't
want to kill my DMM).

Maybe we are talking semantics here but it appears to me that the cause of
diode damage in the SWR bridge circuit is more likely caused by transients
induced into the antenna system by nearby lightning strikes than static
buildup.


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Re: [Elecraft] K3 digi

[Don Wilhelm]

John,

It may be a matter of choice, but I think having a live microphone when 
operating in digital modes is not a good thing.  I would turn MIC+LIN 
off - the MIC SEL to LINE IN for DATA modes.
The only application where I would use MIC+LINE is if I wanted to use a 
software application in voice modes to transmit audio files from the PC 
as well as from the microphone.


In other words, for Soundcard DATA modes, set MIC SEL to LINE.  It is 
mode dependent.  When MIC SEL is set to LINE, the MIC+LIN is turned to 
off automatically.


You *are* running in DATA A mode, are you not?  If not, change to DATA A 
- compression and RX and TX EQ is set flat, that leaves your SSB 
settings "as is" and you do not have to change them when switching 
between voice and data.  All other aspects of DATA A are like SSB.


73,
Don W3FPR

On 1/21/2018 3:57 PM, John wrote:

Ok now thanks to Bill and Jane Ferry.

"Mic+lin " was off.

Thanks again.


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Re: [Elecraft] K3 Power Reading/SWR/ALC Problem

[Jim Brown]

I strongly agree with Bob's advice, EXCEPT that I've gotten really tired 
of replacing Polyphasers on my high wire dipoles. I've recently switched 
to the arrestors that Array Solutions sells, both because I like the 
circuit better and because the gas discharge tubes are user replaceable.


The Polyphasers are feed-through types mounted to the entry panel. The 
Array Solutions are mounted in a big Hoffman box, for which W6GJB built 
some custom mounting brackets. It's mounted to the wall next to the 
plate with the Polyphasers, with two 2-in PVC conduit stubs going 
through the wall and holes drilled at the bottom of the enclosure for 
coax entry.


73, Jim K9YC

On 1/21/2018 2:14 PM, Bob McGraw K4TAX wrote:
From experience, I'd say nearby lightning strikes would be the 
culprit.   I strongly urge everyone to use protection devices on all 
coax and balanced lines at the point where the feed lines and rotor 
lines enter the house.  I prefer Polyphaser devices.   Don't buy cheap 
or ham fest bargain table crap!  Your radio and your house depends on it.


I don't disconnect antennas nor do I ground antennas.  I protect for 
lightning outside and prefer to choose methods where it will not be 
allowed in the house.    And I'm on a hill and have two towers  which 
are  500 ft above average terrain out to some 35 miles.  I understand 
lightning and what it can do.  As to lightning, mitigation is the 
approach, elimination is not physically possible. 



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Re: [Elecraft] K3 Power Reading/SWR/ALC Problem

[Bob McGraw K4TAX]

From experience, I'd say nearby lightning strikes would be the 
culprit.   I strongly urge everyone to use protection devices on all 
coax and balanced lines at the point where the feed lines and rotor 
lines enter the house.  I prefer Polyphaser devices.   Don't buy cheap 
or ham fest bargain table crap!  Your radio and your house depends on it.


I don't disconnect antennas nor do I ground antennas.  I protect for 
lightning outside and prefer to choose methods where it will not be 
allowed in the house.    And I'm on a hill and have two towers  which 
are  500 ft above average terrain out to some 35 miles.  I understand 
lightning and what it can do.  As to lightning, mitigation is the 
approach, elimination is not physically possible.


73

Bob, K4TAX


On 1/21/2018 3:42 PM, ab2tc wrote:

Hi Don and all,

I really don't understand why static build up on the antenna should be a
problem with the K3. Due to the (good) design of the SWR bridge (a two
transformer design with a voltage transformer right across the output) the
antenna port presents a dead short circuit at DC both in receive and
transmit. I just verified this with an ohm-meter (in receive only - no need
to check in transmit since the SWR bridge is surely present then - don't
want to kill my DMM).

Maybe we are talking semantics here but it appears to me that the cause of
diode damage in the SWR bridge circuit is more likely caused by transients
induced into the antenna system by nearby lightning strikes than static
buildup.

Knut - AB2TC


Don Wilhelm wrote

Paul,

The diodes are the most likely suspect, so replace them first and
re-check.

You are correct that the problem is that the wattmeter is not feeding
the power back to the MCU and the power becomes uncontrolled.

Wattmeter damage is normally a result of static coming in on the antenna
feedline.  If you do not have an means of disconnecting the antenna when
not in use, it would be wise to add that - switching the K3 to a dummy
load would be a good addition too.

73,
Don W3FPR






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Re: [Elecraft] K3 Power Reading/SWR/ALC Problem

[ab2tc]

Hi Don and all,

I really don't understand why static build up on the antenna should be a
problem with the K3. Due to the (good) design of the SWR bridge (a two
transformer design with a voltage transformer right across the output) the
antenna port presents a dead short circuit at DC both in receive and
transmit. I just verified this with an ohm-meter (in receive only - no need
to check in transmit since the SWR bridge is surely present then - don't
want to kill my DMM).

Maybe we are talking semantics here but it appears to me that the cause of
diode damage in the SWR bridge circuit is more likely caused by transients
induced into the antenna system by nearby lightning strikes than static
buildup. 

Knut - AB2TC


Don Wilhelm wrote
> Paul,
> 
> The diodes are the most likely suspect, so replace them first and
> re-check.
> 
> You are correct that the problem is that the wattmeter is not feeding 
> the power back to the MCU and the power becomes uncontrolled.
> 
> Wattmeter damage is normally a result of static coming in on the antenna 
> feedline.  If you do not have an means of disconnecting the antenna when 
> not in use, it would be wise to add that - switching the K3 to a dummy 
> load would be a good addition too.
> 
> 73,
> Don W3FPR
> 





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[Elecraft] K3 digi

[John]

Thanks Don.

It now shows up in the software.

73.

John.



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Re: [Elecraft] K3 digi

[Don Wilhelm]

All,

The Line In level is adjusted with the MIC Gain, and he apparently has 
that working.
Line Out level is a CONFIG menu entry - adjustable from 0 to 30, but 
recommendation is that it not be set higher than 10.


My opinion from the short description is that it is a driver conflict or 
other issue - the output device does not show up in his software.


73,
Don W3FPR

On 1/21/2018 2:22 PM, Bill And Jane Ferry wrote:

Is your "Line Out" turned On? Go to confg  and check.  Then when you adj. Mike 
gain it will say Line Out.

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[Elecraft] K3 digi

[John]

Thanks to all who responded.

73.

John.



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[Elecraft] K3 digi

[John]

Ok now thanks to Bill and Jane Ferry.

"Mic+lin " was off.

Thanks again.

73.

John.



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Re: [Elecraft] K3 digi

[Joe Subich, W4TV]

In audio settings, the audio coded device
shows up on input but does not on output.

The audio CODEC is supported by the native Windows USB Audio Class
driver.  It is independent of the FTDI USB to Serial converter (UART).

If an audio input or output is not visible in the Windows Sound Control
panel, I suggest right clicking on the Recording or Playback window and
checking "Show Disconnected Devices" and "Show Disabled Devices".  Once
you can see the devices, the solution should be obvious.

73,

   ... Joe, W4TV


On 1/21/2018 1:53 PM, John wrote:

I've had my K3 upgraded with the new syn boards at Elecraft

and just tried to run digi.  In audio settings, the audio coded device

shows up on input but does not on output.

Any ideas.

My rig has been to Elecraft twice for other problems that have

not been resolved.

Thanks for any ideas.

73.

John.



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Re: [Elecraft] K3 digi

[Don Wilhelm]

John,

I would suggest downloading and installing the FTDI drivers from the 
FTDI website and see if the output device and input device show up after 
that.


73,
Don W3FPR

On 1/21/2018 1:53 PM, John wrote:

I've had my K3 upgraded with the new syn boards at Elecraft

and just tried to run digi.  In audio settings, the audio coded device

shows up on input but does not on output.

Any ideas.

My rig has been to Elecraft twice for other problems that have

not been resolved.

Thanks for any ideas.

73.

John.



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Re: [Elecraft] K3 Power Reading/SWR/ALC Problem

[Don Wilhelm]

Paul,

The diodes are the most likely suspect, so replace them first and re-check.

You are correct that the problem is that the wattmeter is not feeding 
the power back to the MCU and the power becomes uncontrolled.


Wattmeter damage is normally a result of static coming in on the antenna 
feedline.  If you do not have an means of disconnecting the antenna when 
not in use, it would be wise to add that - switching the K3 to a dummy 
load would be a good addition too.


73,
Don W3FPR

On 1/21/2018 1:39 PM, Paul Christensen wrote:

Dick & Don,

Thanks for confirming.  Although unlikely to be the source of trouble, It
also appears U6 and U8 are in the VFWD and VREF circuit paths.  I'll order
up everything and have it on hand when I replace this week.  It could also
be a passive problem like a marginally-corroded connector, or failed
resistor.

By the way, the problem manifests with high SWR and power set readings that
no longer match anything close to  actual output power into known good
loads.  The SWR reading fluctuates excessively with change in the PWR
control and slight changes in the control quickly lead to 120W power spikes
when the K3 display indicates 15-20W.  This tells me the ALC circuit is not
getting a good forward power sample.  So, it appears the SWR bridge or
surrounding circuitry has partially failed.

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Re: [Elecraft] K3 digi

[Bill And Jane Ferry]

Is your "Line Out" turned On? Go to confg  and check.  Then when you adj. Mike 
gain it will say Line Out.
Hope it helps.
Bill

Sent from my iPhone

> On Jan 21, 2018, at 1:58 PM, John  wrote:
> 
> That is to say CODEC device.
> 
> 
> 
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[Elecraft] K3 digi

[John]

That is to say CODEC device.



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[Elecraft] K3 digi

[John]

I've had my K3 upgraded with the new syn boards at Elecraft

and just tried to run digi.  In audio settings, the audio coded device

shows up on input but does not on output.

Any ideas.

My rig has been to Elecraft twice for other problems that have

not been resolved.

Thanks for any ideas.

73.

John.



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Re: [Elecraft] K3 Power Reading/SWR/ALC Problem

[Paul Christensen]

Dick & Don,

Thanks for confirming.  Although unlikely to be the source of trouble, It
also appears U6 and U8 are in the VFWD and VREF circuit paths.  I'll order
up everything and have it on hand when I replace this week.  It could also
be a passive problem like a marginally-corroded connector, or failed
resistor.  

By the way, the problem manifests with high SWR and power set readings that
no longer match anything close to  actual output power into known good
loads.  The SWR reading fluctuates excessively with change in the PWR
control and slight changes in the control quickly lead to 120W power spikes
when the K3 display indicates 15-20W.  This tells me the ALC circuit is not
getting a good forward power sample.  So, it appears the SWR bridge or
surrounding circuitry has partially failed.  

Paul

-Original Message-
From: d...@elecraft.com [mailto:d...@elecraft.com] 
Sent: Sunday, January 21, 2018 1:18 PM
To: 'Paul Christensen' 
Subject: RE: [Elecraft] K3 Power Reading/SWR/ALC Problem

I don't know where purchasing actually buys the parts, but...

D36 and D37 are BAS70INCT Diode, 70V, SOT23, like Digi-Key BAS70INTR-ND
U16 is LM358, DUAL OP AMP, SOIC8, SMD, like Digi-Key LM358DR2GOSTR-ND

73 de Dick, K6KR


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Christensen
Sent: Sunday, January 21, 2018 08:02
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 Power Reading/SWR/ALC Problem

I have a K3 at a remote site about an hour north of my home so
unfortunately, I cannot quickly investigate an issue that's recently
developed.  After reviewing the K3 schematics, the root cause is likely
isolated to the following parts on the PA board: D36, D37 (BAS70 - Schottky
directional coupler sampling diodes), and/or U16 (LM358 dual op-amp used as
a voltage-follower).  

My question:  are these three parts leaded or SMT/SMD?  Perhaps I'm not
looking hard enough on the Elecraft website but I don't see a detailed
B.O.M. for the K3/K3s.  I want to be ready for replacement without wasting a
two-hour trip to/from the site.  Thanks.

Paul, W9AC

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[Elecraft] KX3 Feature Ask

[Dave AD6A]

If at all possible I'd like the KX3 to have a 10MHz frequency reference input. 
What are the chances? Maybe this is something I could add as a mod?

Cheers es 72,
Dave AD6A

Sent from my  iPhone 7 Plus
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Re: [Elecraft] K3 Power Reading/SWR/ALC Problem

[Don Wilhelm]

Paul,

I have not looked to be certain, but there is a 90% probability that 
they are SMD.


Contact pa...@elecraft.com to obtain the part numbers.  Those are not 
normally Field Replacable parts.


73,
Don W3FPR

On 1/21/2018 11:02 AM, Paul Christensen wrote:

I have a K3 at a remote site about an hour north of my home so
unfortunately, I cannot quickly investigate an issue that's recently
developed.  After reviewing the K3 schematics, the root cause is likely
isolated to the following parts on the PA board: D36, D37 (BAS70 - Schottky
directional coupler sampling diodes), and/or U16 (LM358 dual op-amp used as
a voltage-follower).

My question:  are these three parts leaded or SMT/SMD?  Perhaps I'm not
looking hard enough on the Elecraft website 

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Re: [Elecraft] Power Supply in SP3

[Rose]

Neither place is a good choice if heat rise is considered.

73!

Ken - K0PP

On Jan 21, 2018 10:53, "Alan"  wrote:

On 01/21/2018 07:40 AM, hawley, charles j jr wrote:

> K9JRI wonders if it wouldn't be an idea to put a K3 capable power supply
> in the back of the speaker cabinet?
> Seems like a good idea...
>

It might mess up the acoustics.

If you have a P3, that would be a good place for a power supply for the
K3.  Lots of empty space in the cabinet.

Alan N1AL


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Re: [Elecraft] Power Supply in SP3

[Alan]

On 01/21/2018 07:40 AM, hawley, charles j jr wrote:

K9JRI wonders if it wouldn't be an idea to put a K3 capable power supply in the 
back of the speaker cabinet?
Seems like a good idea...


It might mess up the acoustics.

If you have a P3, that would be a good place for a power supply for the 
K3.  Lots of empty space in the cabinet.


Alan N1AL

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[Elecraft] K3 Power Reading/SWR/ALC Problem

[Paul Christensen]

I have a K3 at a remote site about an hour north of my home so
unfortunately, I cannot quickly investigate an issue that's recently
developed.  After reviewing the K3 schematics, the root cause is likely
isolated to the following parts on the PA board: D36, D37 (BAS70 - Schottky
directional coupler sampling diodes), and/or U16 (LM358 dual op-amp used as
a voltage-follower).  

My question:  are these three parts leaded or SMT/SMD?  Perhaps I'm not
looking hard enough on the Elecraft website but I don't see a detailed
B.O.M. for the K3/K3s.  I want to be ready for replacement without wasting a
two-hour trip to/from the site.  Thanks.

Paul, W9AC

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[Elecraft] Power Supply in SP3

[hawley, charles j jr]

K9JRI wonders if it wouldn't be an idea to put a K3 capable power supply in the 
back of the speaker cabinet?
Seems like a good idea...

Chuck Hawley
 c-haw...@illinois.edu

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Re: [Elecraft] The case of the deaf P3

[ke9uw]

That cable supplied with the early P3 was a known troublesome cable. Best
replaced.



-
Chuck, KE9UW
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Re: [Elecraft] T1 BNC connector

[Don Wilhelm]

Rick,

It is a low profile PC Mount BNC connector.  Elecraft p/n E620075.
See the parts listing in the T1 assembly instructions for a small photo.
It is also used in the KX1.

73,
Don W3FPR

On 1/21/2018 2:17 AM, Rick McGaver wrote:

Is the BNC connector used on the T1 tuner standard pcb mount?
Rick. NK 9G

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