Re: [Elecraft] Elecraft CW Net Report

[Brian Hunt]

Hi Kevin,
I listened for you on 20m but heard, maybe an ESP dit or two. Roy had a big 
signal here, S9+ when I moved the beam around to him. Heard a few of the other 
check-ins too. Wayne was about S5 and watery with refraction over the hill. 

A dinner party took me away for the 5 o'clock session. 

That's all the news from HMB. See you next week. 

73,
Brian, K0DTJ

> On Sep 23, 2018, at 18:06, kevinr  wrote:
> 
> Good Evening,
> 
> The onset of fall seems to have helped propagation

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[Elecraft] Elecraft CW Net Report

[kevinr]

Good Evening,

    The onset of fall seems to have helped propagation.  I worked a few 
stations I had not heard in a while.  QSB seemed to be included with 
every signal report.  I just gave RST as a range. But copy was good 
enough that an S1 signal was easy.  I only had to turn down one S9 signal.


   The northern stations were reporting cool temperatures and color 
changes.  But even Texas was cool at 71.  Forty meters got more than the 
usual West Coast operators reaching all the way into Texas and 
Kentucky.  Band noise was higher on 20 than on 40 so Kentucky at 319 to 
539 got logged.  Reports I was receiving were usually S3 or better with 
a few folks just barely hearing me. Surprisingly those signals are often 
quite loud to me.  So follow the rhythm of the net and listen to who I 
am working.  Call when you hear my CQ.  I gather stations in groups of 
one, two, or three (sometimes more) and work them in order.



  On 14050.5 kHz at 2200z:

NO8V - John - MI

K6XK - Roy - IA

W7LXN - Myron - AZ

AB9V - Mike - IN


  On 7047 kHz at z:

W6HV - Troy - CA

K6PJV - Dale - CA

W8OV - Dave - TX

N6KR - Wayne - CA

K4TO - Dave - KY

W0CZ - Ken - ND

K6TET - Ted - CA


   Wayne tried on 20 meters but you have to be in Southern California 
before I can work you.  Forty meters was a much better fit.  With 
today's band you were easy copy from your K3s.  I have received a couple 
emails acknowledging your CQ but they weren't able to get either you or 
me.  They gave you an S5 and me a 339.


   Hopefully next week the bands will be as good as or better than this 
week.  If you can't have a loud signal a quiet band really helps.  I 
should drop my antennas and check them before the weather gets bad.


   Until next week 73,

   Kevin.  KD5ONS


-



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[Elecraft] WTB: Elecraft KPA1500

[Chad Wasinger]

Good evening, All -

I'm putting a post out in hopes of finding one of these fine Elecraft 
amplifiers used before I buy new.  I'm not in a rush and would like to have 
something located by November. It must be in excellent condition and have all 
original factory boxes, manuals and cabling.

I can pay via PayPal and will cover the fee's. I'm also open to driving a 
reasonable distance with cash in hand.

Please contact me directly via email if you have one up for sale.

Thanks!
Chad
N0YK
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Re: [Elecraft] please unsubscribe...I am not interested

[K2bew]

You have to unsubscribe yourself same as you subscribed. Follow the link at
the end of the email to the list home.
73,
Tom


On Sun, Sep 23, 2018, 4:28 PM Leland  wrote:

>
>
> Sent from Mail for Windows 10
>
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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[Peter Torry via Elecraft]

Hi John,

The acc cable is used to convey the control signal from the sequencer to 
the K3 so that the TX INH will inhibit the K3 when configured correctly 
and can be used whether or not the band is built in or not.  It may be 
possible to use the ALC output from the sequencer dependent upon its 
level and polarity  but I do not know how that is configured.  If you 
read the section in the manual that describes the inhibit and compare it 
with the sequencer output you should be able to arrange it correctly.


73

Peter

G3SMT


On 23/09/2018 22:03, John Stengrevics wrote:

Hi Peter,

I appreciate what you are saying, but I have no use for an ACC cable.  The K3S 
has 6 meters built in.

I am using the W6PQL amp with the control board.  But, the control board has to 
connect to ALC on the transceiver.  The K3S has no ALC jack.

I have asked Jim, W6PQL, if setting the TX DELAY to 20 milliseconds will 
provide enough time for relays to switch.

73,

John
WA1EAZ


On Sep 23, 2018, at 5:58 PM, Peter Torry  wrote:

Hi John,

Pin 7 of the Acc connector is the transmit inhibit input that is enabled in the 
config menu.  That is the only way to ensure that the K3 remains in Rx until 
the sequencer has completed its cycle. I use this with all my transverters and 
LNAs to ensure their correct sequencing.

It is described in both the manual and the F Caddy book.

As you are using the PQL amplifier I assume that you are also using the PQL 
control board V6 that has an output that may be used for this purpose, just 
check the polarity of the output as it may need inverting.

Good luck with your project

73

Peter

G3SMT



On 23/09/2018 19:54, John Stengrevics wrote:

Hi Peter,

Thanks for the reply.  But, what would I be using an ACC cable for?

73,

John
WA1EAZ


On Sep 23, 2018, at 3:41 PM, Peter Torry  wrote:

Hi John,

I agree with Don's comments as I use a K3 with an amplifier and an LNA in a 
similar configuration to yourself.  I would never use ALC under any 
circumstances to avoid radiating a poor signal. To protect the LNA I use a 
signal from the sequencer in the amplifier to inhibit the K3 from transmitting 
until the sequencer has done its stuff.  Setting the delay on the K3 still 
leaves you at risk as 20ms is too short a time for all the relays to operate 
satisfactorily.  Use pin7 on the acc connector as detailed in the manual on 
transverter control - TX INH.

73

Peter

G3SMT


On 23/09/2018 15:29, John Stengrevics wrote:

Hi Don,

That was timely as I just got off Skype with Jim, W6PQL.  He mentioned that the 
ALC should be held high for some milliseconds to allow for the amp’s relays to 
switch over thereby protecting the LNA.

Since the K3S works differently than most, he suggested that I look for an RF 
Hold-Off setting on the K3S and set it for around 50 milliseconds.  That being 
said, I don’t see that in the manual or in Fred’s book.  Any suggestions?

73,

John
WA1EAZ


On Sep 23, 2018, at 11:12 AM, Don Wilhelm  wrote:

John,

I do not understand how the amplifier or the ALC could protect the LNA.
I assume the LNA is only used on receive, so if you have good sequencing 
between receive and transmit, no damage could occur.
ALC is only applicable to transmit, and Elecraft does not recommend using ALC 
to limit the drive to the amplifier.  Set the power to the amp properly and all 
will be well.
Using ALC to control the exciter power is a bad way to do things, it will only 
lead to distortion and spurious emissions from the amplifier.

73,
Don W3FPR

On 9/23/2018 10:58 AM, John Stengrevics wrote:

My apologies - I should have added that I am using a Downeast Microwave DTR 
relay to take the LNA out of the line when voltage applied to the relay drops 
as a result of transmission.

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Re: [Elecraft] Elecraft CW Net Announcement

[Dave Sublette]

Good sig here  -- Wayne


K4TO

On Sun, Sep 23, 2018 at 6:03 PM Dave Sublette  wrote:

> Copying VA6FAB with a good signal right on top of the net
>
> K4TO
>
> On Sun, Sep 23, 2018 at 6:00 PM Dave Sublette  wrote:
>
>> Me too-- K2 , 5w battery power 160M vertical...
>>
>> Dave, K4TO
>>
>> On Sun, Sep 23, 2018 at 5:59 PM Wayne Burdick  wrote:
>>
>>> Hi Kevin,
>>>
>>> Warming up the gear. I'll see you on 14.050, conditions permitting.
>>>
>>> Wayne
>>> N6KR
>>>
>>>
>>>
>>> > On Sep 22, 2018, at 8:23 PM, kevinr  wrote:
>>> >
>>> > Good Evening,
>>> >
>>> >While scouting out trees to thin I found a number of new elk
>>> trails.  One poor alder tree had very little bark on the lower four feet of
>>> its trunk.  They like the alder thickets when they grow larger than about
>>> six inches in diameter.  The lower branches die off and a nice sleeping
>>> area forms.  It's also a good place for cedar and hemlock to get a start.
>>> Douglas fir likes a lot of sun so they compete for openings in the canopy.
>>> Cedar and hemlock like it moister and well shaded when they sprout.
>>> >
>>> >There was a period of solar wind activity this week so there are
>>> some ions floating around.  Maybe there will be enough of them left for the
>>> nets.  I am going to move the forty meter net frequency a bit higher to
>>> 7047 kHz.  This may eliminate some of the QRM.  If that doesn't work I'll
>>> need to find something else to try.  Luckily the bands are pretty quiet
>>> other than the thunderstorms over the plains.
>>> >
>>> > Please join us tomorrow on:
>>> >
>>> > 14050 kHz at 2200z Sunday (3 PM PDT Sunday)
>>> >   7047 kHz at z Monday (5 PM PDT Sunday)
>>> >
>>> > 73,
>>> > Kevin. KD5ONS
>>>
>>>
>>> __
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>>> Message delivered to k...@arrl.net
>>>
>>
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Re: [Elecraft] Elecraft CW Net Announcement

[Dave Sublette]

Copying VA6FAB with a good signal right on top of the net

K4TO

On Sun, Sep 23, 2018 at 6:00 PM Dave Sublette  wrote:

> Me too-- K2 , 5w battery power 160M vertical...
>
> Dave, K4TO
>
> On Sun, Sep 23, 2018 at 5:59 PM Wayne Burdick  wrote:
>
>> Hi Kevin,
>>
>> Warming up the gear. I'll see you on 14.050, conditions permitting.
>>
>> Wayne
>> N6KR
>>
>>
>>
>> > On Sep 22, 2018, at 8:23 PM, kevinr  wrote:
>> >
>> > Good Evening,
>> >
>> >While scouting out trees to thin I found a number of new elk
>> trails.  One poor alder tree had very little bark on the lower four feet of
>> its trunk.  They like the alder thickets when they grow larger than about
>> six inches in diameter.  The lower branches die off and a nice sleeping
>> area forms.  It's also a good place for cedar and hemlock to get a start.
>> Douglas fir likes a lot of sun so they compete for openings in the canopy.
>> Cedar and hemlock like it moister and well shaded when they sprout.
>> >
>> >There was a period of solar wind activity this week so there are
>> some ions floating around.  Maybe there will be enough of them left for the
>> nets.  I am going to move the forty meter net frequency a bit higher to
>> 7047 kHz.  This may eliminate some of the QRM.  If that doesn't work I'll
>> need to find something else to try.  Luckily the bands are pretty quiet
>> other than the thunderstorms over the plains.
>> >
>> > Please join us tomorrow on:
>> >
>> > 14050 kHz at 2200z Sunday (3 PM PDT Sunday)
>> >   7047 kHz at z Monday (5 PM PDT Sunday)
>> >
>> > 73,
>> > Kevin. KD5ONS
>>
>>
>> __
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>
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[Elecraft] Fwd: Re: Using A 6 Meter LNA & Amplifier with the K3S

[Peter Torry via Elecraft]

Hi John,

Pin 7 of the Acc connector is the transmit inhibit input that is enabled
in the config menu.  That is the only way to ensure that the K3 remains
in Rx until the sequencer has completed its cycle. I use this with all
my transverters and LNAs to ensure their correct sequencing.

It is described in both the manual and the F Caddy book.

As you are using the PQL amplifier I assume that you are also using the
PQL control board V6 that has an output that may be used for this
purpose, just check the polarity of the output as it may need inverting.

Good luck with your project

73

Peter

G3SMT



On 23/09/2018 19:54, John Stengrevics wrote:

Hi Peter,

Thanks for the reply.  But, what would I be using an ACC cable for?

73,

John
WA1EAZ


On Sep 23, 2018, at 3:41 PM, Peter Torry  wrote:

Hi John,

I agree with Don's comments as I use a K3 with an amplifier and an LNA in a 
similar configuration to yourself.  I would never use ALC under any 
circumstances to avoid radiating a poor signal. To protect the LNA I use a 
signal from the sequencer in the amplifier to inhibit the K3 from transmitting 
until the sequencer has done its stuff.  Setting the delay on the K3 still 
leaves you at risk as 20ms is too short a time for all the relays to operate 
satisfactorily.  Use pin7 on the acc connector as detailed in the manual on 
transverter control - TX INH.

73

Peter

G3SMT


On 23/09/2018 15:29, John Stengrevics wrote:

Hi Don,

That was timely as I just got off Skype with Jim, W6PQL.  He mentioned that the 
ALC should be held high for some milliseconds to allow for the amp’s relays to 
switch over thereby protecting the LNA.

Since the K3S works differently than most, he suggested that I look for an RF 
Hold-Off setting on the K3S and set it for around 50 milliseconds.  That being 
said, I don’t see that in the manual or in Fred’s book.  Any suggestions?

73,

John
WA1EAZ


On Sep 23, 2018, at 11:12 AM, Don Wilhelm  wrote:

John,

I do not understand how the amplifier or the ALC could protect the LNA.
I assume the LNA is only used on receive, so if you have good sequencing 
between receive and transmit, no damage could occur.
ALC is only applicable to transmit, and Elecraft does not recommend using ALC 
to limit the drive to the amplifier.  Set the power to the amp properly and all 
will be well.
Using ALC to control the exciter power is a bad way to do things, it will only 
lead to distortion and spurious emissions from the amplifier.

73,
Don W3FPR

On 9/23/2018 10:58 AM, John Stengrevics wrote:

My apologies - I should have added that I am using a Downeast Microwave DTR 
relay to take the LNA out of the line when voltage applied to the relay drops 
as a result of transmission.

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Re: [Elecraft] Elecraft CW Net Announcement

[Dave Sublette]

Me too-- K2 , 5w battery power 160M vertical...

Dave, K4TO

On Sun, Sep 23, 2018 at 5:59 PM Wayne Burdick  wrote:

> Hi Kevin,
>
> Warming up the gear. I'll see you on 14.050, conditions permitting.
>
> Wayne
> N6KR
>
>
>
> > On Sep 22, 2018, at 8:23 PM, kevinr  wrote:
> >
> > Good Evening,
> >
> >While scouting out trees to thin I found a number of new elk trails.
> One poor alder tree had very little bark on the lower four feet of its
> trunk.  They like the alder thickets when they grow larger than about six
> inches in diameter.  The lower branches die off and a nice sleeping area
> forms.  It's also a good place for cedar and hemlock to get a start.
> Douglas fir likes a lot of sun so they compete for openings in the canopy.
> Cedar and hemlock like it moister and well shaded when they sprout.
> >
> >There was a period of solar wind activity this week so there are some
> ions floating around.  Maybe there will be enough of them left for the
> nets.  I am going to move the forty meter net frequency a bit higher to
> 7047 kHz.  This may eliminate some of the QRM.  If that doesn't work I'll
> need to find something else to try.  Luckily the bands are pretty quiet
> other than the thunderstorms over the plains.
> >
> > Please join us tomorrow on:
> >
> > 14050 kHz at 2200z Sunday (3 PM PDT Sunday)
> >   7047 kHz at z Monday (5 PM PDT Sunday)
> >
> > 73,
> > Kevin. KD5ONS
>
>
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Re: [Elecraft] Elecraft CW Net Announcement

[Wayne Burdick]

Hi Kevin,

Warming up the gear. I'll see you on 14.050, conditions permitting.

Wayne
N6KR



> On Sep 22, 2018, at 8:23 PM, kevinr  wrote:
> 
> Good Evening,
> 
>While scouting out trees to thin I found a number of new elk trails.  One 
> poor alder tree had very little bark on the lower four feet of its trunk.  
> They like the alder thickets when they grow larger than about six inches in 
> diameter.  The lower branches die off and a nice sleeping area forms.  It's 
> also a good place for cedar and hemlock to get a start.  Douglas fir likes a 
> lot of sun so they compete for openings in the canopy.  Cedar and hemlock 
> like it moister and well shaded when they sprout.
> 
>There was a period of solar wind activity this week so there are some ions 
> floating around.  Maybe there will be enough of them left for the nets.  I am 
> going to move the forty meter net frequency a bit higher to 7047 kHz.  This 
> may eliminate some of the QRM.  If that doesn't work I'll need to find 
> something else to try.  Luckily the bands are pretty quiet other than the 
> thunderstorms over the plains.
> 
> Please join us tomorrow on:
> 
> 14050 kHz at 2200z Sunday (3 PM PDT Sunday)
>   7047 kHz at z Monday (5 PM PDT Sunday)
> 
> 73,
> Kevin. KD5ONS


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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[Jim Brown]

On 9/23/2018 1:35 PM, ANDY DURBIN wrote:

The KPA500 doesn't work that way so I'd be surprised if the KPA1500 did.


Some amps have more protection than others. Some have none. :)

73, Jim K9YC

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[Elecraft] KPA -1500 fixed!

[Roger D Johnson]

I had to revert to WinXP in order to change the port assignment for the FTDI
adapter. After I finally established comms, the firmware loaded and all seems
fine now.

Just wondering why I had the "low gain ratio" error with v1.78?

73 all, Roger
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[Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[ANDY DURBIN]

"The ONLY good use of ALC between rig and amp is to protect the amp from a 
failure in the antenna system. "


The KPA500 doesn't work that way so I'd be surprised if the KPA1500 did. For 
the KPA500 a badly mismatched load will trip the reflected power fault without 
making any change to the ALC voltage. I know this because ALC voltage is 
included in my logger data set and I have several logger records for Fault 09. 
(It's not that I'm really careless about antenna switching. FL09 was a 
deliberate test case for evaluating a KPA500 firmware defect.)


73,

Andy k3wyc
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[Elecraft] please unsubscribe...I am not interested

[Leland]

Sent from Mail for Windows 10

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[Elecraft] KPA1500

[Roger D Johnson]

I think I've bricked my KPA1500! Yesterday I installed v1.78 of the firmware.
Today I was calling a dx station on 20m and I kept getting a "low gain ratio"
error message. I thought it might be the new firmware so decided to go back
to v1.64. I downloaded the hex file from Elecraft and somewhere along the line
things went astray. I had an firmware loading indication on the display but it
was static. I looked through the manual for some sort of reset proceedure but
found nothing. I thought that killing the power and a restart might cure it.
Now, the amp comes on with fans at full blast and front panel buttons do 
nothing!

Help!

73, Roger


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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[Jim Brown]

On 9/23/2018 8:12 AM, Don Wilhelm wrote:
Using ALC to control the exciter power is a bad way to do things, it 
will only lead to distortion and spurious emissions from the amplifier.


RIGHT! The ONLY good use of ALC between rig and amp is to protect the 
amp from a failure in the antenna system. To do that, set output power 
from the rig to get the desired output level.


73, Jim K9YC

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Re: [Elecraft] New Website

[Ron Genovesi]

Hmmm Do you think!

 Ron Genovesi
   N3ETA
Sent from my iPhone

> On Sep 23, 2018, at 9:38 AM, Gordon LaPoint  wrote:
> 
> No, it will be direct drive electric.
> 73,  Gordon - N1MGO
> 
>> On 9/23/2018 7:38 AM, Charlie T wrote:
>> Bands must be dead if all we can find to talk about are the pro's & con's of
>> a new website design..
>> 
>> Hey, eventually, I'll have to learn how to drive an automatic (CVT?)
>> automobile instead of a cog-swapper.
>> 
>> 73, Charlie k3ICH
>> 
>> 
>> 
>> 
>> 
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Re: [Elecraft] New Website

[Gordon LaPoint]

No, it will be direct drive electric.
73,  Gordon - N1MGO

On 9/23/2018 7:38 AM, Charlie T wrote:

Bands must be dead if all we can find to talk about are the pro's & con's of
a new website design..

Hey, eventually, I'll have to learn how to drive an automatic (CVT?)
automobile instead of a cog-swapper.

73, Charlie k3ICH





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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[John Stengrevics]

Hi Don,

Ordinarily, the W6PQL amp’s control board does this via ALC on the exciter.  
But, since that is not an option with the K3S, setting TX DELAY on the K3S to 
20 milliseconds should do the trick.  That is what Jim, W6PQL, suggested I do.

I have been using the W6PQL amp with the K3S without any problems heretofore.

73,

John
WA1EAZ

> On Sep 23, 2018, at 12:17 PM, Don Wilhelm  wrote:
> 
> John,
> 
> There is TX Inhibit that will prevent RF from the K3 until that signal is 
> dropped.
> Of course, it requires a signal from the amplifier or sequencer to indicate 
> that it is ready for RF.
> 
> Trying to use ALC for that purpose is not a good idea.
> Does the amplifier control the high on ALC, or is that left to the exciter to 
> implement?
> 
> 73,
> Don W3FPR
> 
> On 9/23/2018 11:29 AM, John Stengrevics wrote:
>> Hi Don,
>> 
>> That was timely as I just got off Skype with Jim, W6PQL.  He mentioned that 
>> the ALC should be held high for some milliseconds to allow for the amp’s 
>> relays to switch over thereby protecting the LNA.
>> 
>> Since the K3S works differently than most, he suggested that I look for an 
>> RF Hold-Off setting on the K3S and set it for around 50 milliseconds.  That 
>> being said, I don’t see that in the manual or in Fred’s book.  Any 
>> suggestions?
>> 
>> 73,
>> 
>> John
>> WA1EAZ
>> 
>>> On Sep 23, 2018, at 11:12 AM, Don Wilhelm  wrote:
>>> 
>>> John,
>>> 
>>> I do not understand how the amplifier or the ALC could protect the LNA.
>>> I assume the LNA is only used on receive, so if you have good sequencing 
>>> between receive and transmit, no damage could occur.
>>> ALC is only applicable to transmit, and Elecraft does not recommend using 
>>> ALC to limit the drive to the amplifier.  Set the power to the amp properly 
>>> and all will be well.
>>> Using ALC to control the exciter power is a bad way to do things, it will 
>>> only lead to distortion and spurious emissions from the amplifier.
>>> 
>>> 73,
>>> Don W3FPR
>>> 
>>> On 9/23/2018 10:58 AM, John Stengrevics wrote:
 My apologies - I should have added that I am using a Downeast Microwave 
 DTR relay to take the LNA out of the line when voltage applied to the 
 relay drops as a result of transmission.
>> 
> 

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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[Don Wilhelm]

John,

There is TX Inhibit that will prevent RF from the K3 until that signal 
is dropped.
Of course, it requires a signal from the amplifier or sequencer to 
indicate that it is ready for RF.


Trying to use ALC for that purpose is not a good idea.
Does the amplifier control the high on ALC, or is that left to the 
exciter to implement?


73,
Don W3FPR

On 9/23/2018 11:29 AM, John Stengrevics wrote:

Hi Don,

That was timely as I just got off Skype with Jim, W6PQL.  He mentioned that the 
ALC should be held high for some milliseconds to allow for the amp’s relays to 
switch over thereby protecting the LNA.

Since the K3S works differently than most, he suggested that I look for an RF 
Hold-Off setting on the K3S and set it for around 50 milliseconds.  That being 
said, I don’t see that in the manual or in Fred’s book.  Any suggestions?

73,

John
WA1EAZ


On Sep 23, 2018, at 11:12 AM, Don Wilhelm  wrote:

John,

I do not understand how the amplifier or the ALC could protect the LNA.
I assume the LNA is only used on receive, so if you have good sequencing 
between receive and transmit, no damage could occur.
ALC is only applicable to transmit, and Elecraft does not recommend using ALC 
to limit the drive to the amplifier.  Set the power to the amp properly and all 
will be well.
Using ALC to control the exciter power is a bad way to do things, it will only 
lead to distortion and spurious emissions from the amplifier.

73,
Don W3FPR

On 9/23/2018 10:58 AM, John Stengrevics wrote:

My apologies - I should have added that I am using a Downeast Microwave DTR 
relay to take the LNA out of the line when voltage applied to the relay drops 
as a result of transmission.




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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[John Stengrevics]

Hi John,

Aha!  I see that now.  OK, I will follow the instruction in Fred’s book to set 
this.

Thanks & 73,

John
WA1EAZ

> On Sep 23, 2018, at 11:53 AM, John Simmons  wrote:
> 
> I think it is called TX DELAY. I know the setting is in there.
> 
> -John NI0K
> 
> John Stengrevics wrote on 9/23/2018 10:29 AM:
>> Hi Don,
>> 
>> That was timely as I just got off Skype with Jim, W6PQL.  He mentioned that 
>> the ALC should be held high for some milliseconds to allow for the amp’s 
>> relays to switch over thereby protecting the LNA.
>> 
>> Since the K3S works differently than most, he suggested that I look for an 
>> RF Hold-Off setting on the K3S and set it for around 50 milliseconds.  That 
>> being said, I don’t see that in the manual or in Fred’s book.  Any 
>> suggestions?
>> 
>> 73,
>> 
>> John
>> WA1EAZ
>> 
>>> On Sep 23, 2018, at 11:12 AM, Don Wilhelm  wrote:
>>> 
>>> John,
>>> 
>>> I do not understand how the amplifier or the ALC could protect the LNA.
>>> I assume the LNA is only used on receive, so if you have good sequencing 
>>> between receive and transmit, no damage could occur.
>>> ALC is only applicable to transmit, and Elecraft does not recommend using 
>>> ALC to limit the drive to the amplifier.  Set the power to the amp properly 
>>> and all will be well.
>>> Using ALC to control the exciter power is a bad way to do things, it will 
>>> only lead to distortion and spurious emissions from the amplifier.
>>> 
>>> 73,
>>> Don W3FPR
>>> 
>>> On 9/23/2018 10:58 AM, John Stengrevics wrote:
 My apologies - I should have added that I am using a Downeast Microwave 
 DTR relay to take the LNA out of the line when voltage applied to the 
 relay drops as a result of transmission.
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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[John Simmons]

I think it is called TX DELAY. I know the setting is in there.

-John NI0K

John Stengrevics wrote on 9/23/2018 10:29 AM:

Hi Don,

That was timely as I just got off Skype with Jim, W6PQL.  He mentioned that the 
ALC should be held high for some milliseconds to allow for the amp’s relays to 
switch over thereby protecting the LNA.

Since the K3S works differently than most, he suggested that I look for an RF 
Hold-Off setting on the K3S and set it for around 50 milliseconds.  That being 
said, I don’t see that in the manual or in Fred’s book.  Any suggestions?

73,

John
WA1EAZ


On Sep 23, 2018, at 11:12 AM, Don Wilhelm  wrote:

John,

I do not understand how the amplifier or the ALC could protect the LNA.
I assume the LNA is only used on receive, so if you have good sequencing 
between receive and transmit, no damage could occur.
ALC is only applicable to transmit, and Elecraft does not recommend using ALC 
to limit the drive to the amplifier.  Set the power to the amp properly and all 
will be well.
Using ALC to control the exciter power is a bad way to do things, it will only 
lead to distortion and spurious emissions from the amplifier.

73,
Don W3FPR

On 9/23/2018 10:58 AM, John Stengrevics wrote:

My apologies - I should have added that I am using a Downeast Microwave DTR 
relay to take the LNA out of the line when voltage applied to the relay drops 
as a result of transmission.

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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[John Stengrevics]

Hi Don,

That was timely as I just got off Skype with Jim, W6PQL.  He mentioned that the 
ALC should be held high for some milliseconds to allow for the amp’s relays to 
switch over thereby protecting the LNA.

Since the K3S works differently than most, he suggested that I look for an RF 
Hold-Off setting on the K3S and set it for around 50 milliseconds.  That being 
said, I don’t see that in the manual or in Fred’s book.  Any suggestions?

73,

John
WA1EAZ

> On Sep 23, 2018, at 11:12 AM, Don Wilhelm  wrote:
> 
> John,
> 
> I do not understand how the amplifier or the ALC could protect the LNA.
> I assume the LNA is only used on receive, so if you have good sequencing 
> between receive and transmit, no damage could occur.
> ALC is only applicable to transmit, and Elecraft does not recommend using ALC 
> to limit the drive to the amplifier.  Set the power to the amp properly and 
> all will be well.
> Using ALC to control the exciter power is a bad way to do things, it will 
> only lead to distortion and spurious emissions from the amplifier.
> 
> 73,
> Don W3FPR
> 
> On 9/23/2018 10:58 AM, John Stengrevics wrote:
>> My apologies - I should have added that I am using a Downeast Microwave DTR 
>> relay to take the LNA out of the line when voltage applied to the relay 
>> drops as a result of transmission.

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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[Don Wilhelm]

John,

I do not understand how the amplifier or the ALC could protect the LNA.
I assume the LNA is only used on receive, so if you have good sequencing 
between receive and transmit, no damage could occur.
ALC is only applicable to transmit, and Elecraft does not recommend 
using ALC to limit the drive to the amplifier.  Set the power to the amp 
properly and all will be well.
Using ALC to control the exciter power is a bad way to do things, it 
will only lead to distortion and spurious emissions from the amplifier.


73,
Don W3FPR

On 9/23/2018 10:58 AM, John Stengrevics wrote:

My apologies - I should have added that I am using a Downeast Microwave DTR 
relay to take the LNA out of the line when voltage applied to the relay drops 
as a result of transmission.


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Re: [Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[John Stengrevics]

My apologies - I should have added that I am using a Downeast Microwave DTR 
relay to take the LNA out of the line when voltage applied to the relay drops 
as a result of transmission.

73,

John
WA1EAZ
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[Elecraft] Using A 6 Meter LNA & Amplifier with the K3S

[John Stengrevics]

I am installing an LNA at the feed point of my 6 meter antenna.  I also drive a 
W6PQL amplifier.

My reading of the manual, and Fred Cady’s book, suggests that no external ALC 
is necessary to protect the LNA.  Can someone using a similar set-up confirm 
this?  Or, suggest a procedure to follow if my interpretation is incorrect?

Thanks,

John
WA1EAZ
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Re: [Elecraft] New Website

[Charlie T]

Bands must be dead if all we can find to talk about are the pro's & con's of
a new website design..

Hey, eventually, I'll have to learn how to drive an automatic (CVT?)
automobile instead of a cog-swapper.

73, Charlie k3ICH





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