Re: [Elecraft] K3S driving an Alpha 86

[DC]

I have used a K3 with an Alpha 76, 78 and 77DX.

On 12/6/2019 8:08 PM, Bob McGraw K4TAX wrote:

Sorry Vic, I had a different manufacturer manual in front of me trying to 
assist another ham with his radio and amp connection.

Bob, K4TAX


Sent from my iPhone


On Dec 6, 2019, at 9:45 PM, Victor Rosenthal 4X6GP  wrote:


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Re: [Elecraft] K3S driving an Alpha 86

[Bob McGraw K4TAX]

Sorry Vic, I had a different manufacturer manual in front of me trying to 
assist another ham with his radio and amp connection. 

Bob, K4TAX


Sent from my iPhone

> On Dec 6, 2019, at 9:45 PM, Victor Rosenthal 4X6GP  
> wrote:
> 
> 
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Re: [Elecraft] K3S driving an Alpha 86

[Victor Rosenthal 4X6GP]

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Re: [Elecraft] K3S driving an Alpha 86

[Bob McGraw K4TAX]

What are the keying requirements of the Alpha?   The values of voltage 
and current should be in the Alpha manual.  Then are those requirements 
in the range as defined on page 28 of the Tentec Omni VII manual, 
paragraph IMPORTANT NOTICE.    From this information you should be able 
to determine YES or NO.


73

Bob, K4TAX


On 12/6/2019 8:19 PM, Bill Weaver wrote:
  
  
Will a K3S key an Alpha 86 direct without an intermediate relay? I'm trying to set up my system quickly for the ARRL 160 and hoping to get a quick answer.
  

  
Thanks and 73,
  
Bill WE5P
  

  
  

  
  
  
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[Elecraft] K3S driving an Alpha 86

[Bill Weaver]

 
 
Will a K3S key an Alpha 86 direct without an intermediate relay? I'm trying to 
set up my system quickly for the ARRL 160 and hoping to get a quick answer.
 

 
Thanks and 73,
 
Bill WE5P
 

 
 

 
 
 
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Re: [Elecraft] K3S accessories availability, moving forward

[Don Wilhelm]

Parts are different from options (assemblies).
Parts from Elecraft will continue to be available as long as the parts 
are not obsolete, but the options will not after the stock is exhausted. 
 The options are assemblies of parts.


73,
Don W3FPR

On 12/6/2019 8:04 PM, hawley, charles j jr wrote:

BMW Motorcycles keeps many parts for more than 50 years. I once ordered a set 
of springs for a 1960 BMW and BMW parts in Germany sent one and ordered the 
second one from an outside vendor...which means they had it made.
There's more value to supplying parts for obsolete products than what the 
accounts see.

Jack BMW Motorcycles
Chuck KE9UW
c-haw...@illinois.edu

Sent from my iPad


On Dec 6, 2019, at 2:31 PM, Bob McGraw K4TAX  wrote:

Ed explained it quite well.   I would add that when a product is discontinued 
usually the options, being also considered as product, will go away as well.   
This does not imply that repair parts are discontinued.   It is often confusing 
to users when a product is not longer available that service parts of the same 
items are available.  Usually one has a product model number and the other has 
a service part number.

After a product is obsoleted, where I previously worked, we planned service 
parts supports for some 7 or so years.  There is no legal requirement for a 
company to do this with consumer type products.   Often we missed the 
projection and ran out early.  In some cases it was the customers that ordered 
an excessive number of service parts {so they could have spares} and this drew 
down the projected service parts inventory.And then too, the accountants 
came around asking what is all of this on the shelves for the last 5 years with 
no usage?   Get rid of the inventory as it is costing the company money. 
The customer looses either way.

73

Bob, K4TAX



On 12/6/2019 1:00 PM, Edward R Cole wrote:
Don explained it well; Elecraft support appears to continue for the K3, K3S.  
Obtaining new options apparently has a shorter life-span.


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[Elecraft] KPA1500 firmware 2.38 is now available

[Andy Durbin]

"Geez, couldn't have just posted the link?"

Well that's not any better because Elecraft seems to have used a page structure 
that does not change the URL.  Navigate to the page of interest and copy the 
URL but that URL takes you to the parent page.  Not a very clever design.

The update details are:

02.38 12/2/2019

  *   Bug fix: fan speed was reduced too quickly during cool-down
  *   Switch to STBY if BAND CHANGE->STBY is enabled and the frequency (from 
XCVR or TX count) is below the amp's frequency range
  *   Reduce reflected power fault events when band or ATU settings change
  *   Reduce turn-off delay when XCVR KEY is used
  *   Wait longer after band change to inform K3 that KPA1500 has switched to 
STBY when BANDCHANGE->STBY is YES
  *   Skip ATU HiSWR retune if the current bin contains only the ATU setting 
that matches the ATU relays
  *   Added ^DA command to display current ATU frequency, relay settings, and 
bypass SWR. Get with ^DA; response is like
^DA10128 AN1 Side TX 280 nH (L05) 571 pF (C36) SWR Bypass 4.0;
  *   Add Tech Mode FAN SPEED DWELL menu item and ^DW command to set the time 
fans stay at a given speed after crossing a cool-down temperature threshold.
  *   Add Tech Mode BOOT BLOCK VERSION menu item and ^BV command to display the 
boot block firmware version.. ^BV; response is like ^BV01.06;"

Andy, k3wyc
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Re: [Elecraft] K3S accessories availability, moving forward

[Ted Edwards W3TB]

I don't know how long accessories will be available.
I had not gotten around to the sub-receiver, but I ordered one over the
weekend and it came today.  Glad

On Fri, Dec 6, 2019 at 7:06 PM hawley, charles j jr 
wrote:

> BMW Motorcycles keeps many parts for more than 50 years. I once ordered a
> set of springs for a 1960 BMW and BMW parts in Germany sent one and ordered
> the second one from an outside vendor...which means they had it made.
> There's more value to supplying parts for obsolete products than what the
> accounts see.
>
> Jack BMW Motorcycles
> Chuck KE9UW
> c-haw...@illinois.edu
>
> Sent from my iPad
>
> > On Dec 6, 2019, at 2:31 PM, Bob McGraw K4TAX 
> wrote:
> >
> > Ed explained it quite well.   I would add that when a product is
> discontinued usually the options, being also considered as product, will go
> away as well.   This does not imply that repair parts are discontinued.
>  It is often confusing to users when a product is not longer available that
> service parts of the same items are available.  Usually one has a product
> model number and the other has a service part number.
> >
> > After a product is obsoleted, where I previously worked, we planned
> service parts supports for some 7 or so years.  There is no legal
> requirement for a company to do this with consumer type products.   Often
> we missed the projection and ran out early.  In some cases it was the
> customers that ordered an excessive number of service parts {so they could
> have spares} and this drew down the projected service parts inventory.
> And then too, the accountants came around asking what is all of this on the
> shelves for the last 5 years with no usage?   Get rid of the inventory as
> it is costing the company money. The customer looses either way.
> >
> > 73
> >
> > Bob, K4TAX
> >
> >
> >> On 12/6/2019 1:00 PM, Edward R Cole wrote:
> >> Don explained it well; Elecraft support appears to continue for the K3,
> K3S.  Obtaining new options apparently has a shorter life-span.
> >>
> >>
> >
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-- 
73 de Ted Edwards, W3TB and GØPWW

and thinking about operating CW:
"Do today what others won't,
so you can do tomorrow what others can't."
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Re: [Elecraft] K3S accessories availability, moving forward

[hawley, charles j jr]

BMW Motorcycles keeps many parts for more than 50 years. I once ordered a set 
of springs for a 1960 BMW and BMW parts in Germany sent one and ordered the 
second one from an outside vendor...which means they had it made.
There's more value to supplying parts for obsolete products than what the 
accounts see.

Jack BMW Motorcycles
Chuck KE9UW
c-haw...@illinois.edu

Sent from my iPad

> On Dec 6, 2019, at 2:31 PM, Bob McGraw K4TAX  wrote:
> 
> Ed explained it quite well.   I would add that when a product is discontinued 
> usually the options, being also considered as product, will go away as well.  
>  This does not imply that repair parts are discontinued.   It is often 
> confusing to users when a product is not longer available that service parts 
> of the same items are available.  Usually one has a product model number and 
> the other has a service part number.
> 
> After a product is obsoleted, where I previously worked, we planned service 
> parts supports for some 7 or so years.  There is no legal requirement for a 
> company to do this with consumer type products.   Often we missed the 
> projection and ran out early.  In some cases it was the customers that 
> ordered an excessive number of service parts {so they could have spares} and 
> this drew down the projected service parts inventory.And then too, the 
> accountants came around asking what is all of this on the shelves for the 
> last 5 years with no usage?   Get rid of the inventory as it is costing the 
> company money. The customer looses either way.
> 
> 73
> 
> Bob, K4TAX
> 
> 
>> On 12/6/2019 1:00 PM, Edward R Cole wrote:
>> Don explained it well; Elecraft support appears to continue for the K3, K3S. 
>>  Obtaining new options apparently has a shorter life-span.
>> 
>> 
> 
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Re: [Elecraft] KPA1500 firmware 2.38 is now available

[Jim Brown]

On 12/6/2019 3:32 PM, Dick Dievendorff wrote:

Changes in 02.38 are also described on our web site:  Elecraft.com, and work
your way thru "Support", "Firmware/Software", "Amplifier Firmware and
Software", KPA1500.


Geez, couldn't have just posted the link?

https://elecraft.com/pages/firmware-software

73, Jim K9YC
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[Elecraft] Feature density of portable transceivers: K1 vs. KX2

[Wayne Burdick]

A morning break in the rain today in the Bay Area allowed me to sneak out for 
some field operation with the KX2. While using every weapon in the KX2's 
arsenal, I thought about how to best convey just how feature-dense this radio 
is. 

To appreciate it, you really need to hold the rig in your hand and try it out. 
Since that's not always an option for a potential user, the next best thing 
might be to create an engineering metric. 

Granted, "features per cubic inch" (feature density) isn't exactly science, but 
it is useful for comparing portable transceivers, where both size and 
versatility really matter.

Here's one possible formula:

   F_in = ( bands + modes + internal_options + other_significant_features ) / 
in^3

Fuzzy? Well...yeah. Nonetheless, here's what happens if we apply this to our 
legacy 4-band K1 transceiver and the KX2.

*

K1:

   bands: 4   (owner's choice of HF bands)
   modes: 1   (CW)
   options:   3   (battery, ATU, noise blanker)
   other: 3   (keyer, CW messages, variable-BW xtal filter)

   F = ( 4 + 1 + 3 + 3 ) / 64 in^3 = 0.17 features per cubic inch

KX2:

   bands: 9   (80, 60, 40, 30, 20, 17, 15, 12, 10 m)
   modes: 5   (CW, SSB, AM, FM, DATA)
   options:   5   (mic, battery, ATU, paddle, real-time clock, 100 W amp)
   other: 35  (keyer, CW messages, int. mic, DVR, speech compression, VOX,
   IF DSP (SDR), switchable preamp, switchable attenuator,
   audio peaking filter (APF, for CW),
   RTTY decode/encode, PSK31 decode/encode, CW/data auto-tune,
   fully adjustable AGC slope/threshold/decay, RF gain & AF 
limiter, 
   dual watch, variable-passband filters, passband shift,
   noise blanking, noise reduction, audio effects, RX/TX EQ,
   dual VFOs, split, wide-range RIT/XIT, cross-mode (SSB/CW),
   CW/data logging, 4 user-programmable functions, Amp-hour 
tracking,
   scanning, freq. memories, direct frequency entry,
   full remote control interface, freq. up/down buttons (on 
mic),
   measurement of PWR/SWR/ALC/CMP/supply voltage/supply current,
   adjustable carrier-operated relay)

   F = ( 9 + 5 + 5 + 36 ) / 26 = 2.1 features per cubic inch

*

By this metric, the KX2 packs about 12 times as much "punch" as a K1. (As a 
principal designer of both radios, I have to admit this is a bit alarming. In 
2001 we felt the K1 was pretty much state of the art for small CW rigs.) 

Of course, holding the KX2 in your hand, then actually putting it on the air, 
provides a much more satisfying comparison.

Calculation of feature density of the KX3 is left as an exercise for the reader 
:)

73,
Wayne
N6KR




 
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[Elecraft] KPA1500 firmware 2.38 is now available

[Dick Dievendorff]

We've updated the "production" firmware for KPA1500 to version 02.38.

 

To get this version:

 

Start the KPA1500 Utility. Choose the "Firmware" tab.  Click "Copy New Files
from Elecraft".  This should bring the new firmware and release notes onto
your PC's disk.  View the Release notes with the KPA1500 Utility Help -
KPA1500 Firmware Release notes menu item. Then click "Send Firmware to
KPA1500" to actually send firmware in the amplifier.

 

Changes in 02.38 are also described on our web site:  Elecraft.com, and work
your way thru "Support", "Firmware/Software", "Amplifier Firmware and
Software", KPA1500.  

 

73 de Dick, K6KR

 

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Re: [Elecraft] AX-1 whip antenna

[Lyn Norstad]

With only 6 feet of coax between the rig and the antenna, you've probably
done about all you can do.  Proximity is your main problem now.

I'd look at the possibility of getting your antenna outside, even if you
need to disguise it somehow.

Lyn
WØLEN


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jobst Vandrey
Sent: Friday, December 06, 2019 3:16 PM
To: Steve Hull
Cc: Elecraft Reflector
Subject: Re: [Elecraft] AX-1 whip antenna

Sorry - I don't have very short jumpers available right now for that test -
the actual setup has 2 feet of coax between the antenna and the isolation
transformer followed by 4 feet of coax to the K3 connector.  This
configuration  works fine when testing in FT8 mode at 20 watts on 20 meters
and also on 40 meters (when using the AEX1 extender).

Jobst
AC0LP

On Fri, Dec 6, 2019 at 3:27 PM Steve Hull  wrote:

> I wonder what would happen if you moved the 1:1 choke to the other end of
> your feedline (closer to your K3)?
>
> -Steve
>
> On Fri, Dec 6, 2019, 11:41 AM Jobst Vandrey  wrote:
>
>> I have been trying to come up with a antenna for use in an apartment with
>> only limited success.  I have now set up the Elecraft AX-1 antenna and it
>> seems to play well with my K3 indoors with the antenna  placed in a
window
>> supported by a folding camera tripod.
>>
>> One caveat is that there seems to be significant feedline RF so a 1:1
>> isolation transformer near the antenna feed point is an absolute
>> requirement.  Without the transformer, even 1 watt transmissions  caused
>> various nasty computer gremlins when using digital modes.
>>
>> My apartment no longer needs to be a maze of wires and switches - many
>> thanks to Elecraft for this excellent product.
>>
>> Jobst
>> AC0LP
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>>
>
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Re: [Elecraft] [K2] USB version for USB to serial adapter

[Neil Zampella]

I purchased a serial to USB adapter from Amazon that had the FTDI
chipset, and have had no problems with CAT control to the rig. I've
added a link to Amazon for that adapter, its only $12 but it works well.

https://www.amazon.com/gp/product/B00BUZ0K68/ref=ppx_yo_dt_b_asin_title_o09_s00?ie=UTF8=1

On 12/6/2019 10:45 AM, NJMike wrote:

I want to connect my Windows 10 tablet to my K2.  I have the KIO2 module
installed and I have built the K2 serial cable.  I have read the relevant
material on the Elecraft website about avoiding the Prolific chipset.  The
USB port on my tablet is 3.0.  My question is this - can I use any version
of USB (1.1, 2.0, 3.0) to serial adapter to connect the tablet to the K2
cable or is one better than the others?

Thanks,
Mike



--
Sent from: http://elecraft.365791.n2.nabble.com/


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Re: [Elecraft] AX-1 whip antenna

[Jim Brown]

Of course there is considerable feedline RF -- the feedline is acting as 
a counterpoise, carrying return current from the antenna.


The problem is that the AX-1 is intended for use hand-portable rigs like 
the KX3 running battery power CW/SSB. Your attempted use of it as a 
fixed antenna and with an attached computer is an un-natural act. :)


The solution to your problem has multiple components. First, add wires 
to the coax shield at the antenna to act as a counterpoise. Second, add 
a SERIOUS common mode choke at the feedpoint to keep RF off the coax.

http://k9yc.com/2018Cookbook.pdf
Third, carefully bond together the chassis of every piece of equipment 
in the shack that is interconnected.

http://k9yc.com/GroundingAndAudio.pdf

An even better solution is to use one or more antenna better suited to 
your setup. A quarter-wave wire connected to the center conductor and 
another connected to the shield makes a fine antenna; if your K3 has the 
tuner, an antenna cut for 30M will work on 20 and 40; one cut for 20 
will work on 30 and 17. A choke is needed at the feedpoint (where those 
two wires are connected).


All the wiring in your station acts as a receiving antenna for the 
equipment, so when your transmitting antenna is close to that wiring, it 
WILL act as a receiving antenna and dump it into your equipment. The 
solution to that is 1) bonding, as noted above AND 2) ferrite chokes on 
that wiring in you station. For those chokes, follow the recommendations 
on pages 9-10 of this applications note.

http://k9yc.com/KillingReceiveNoise.pdf

Finally, if you don't already own them, buy a copy of the ARRL Handbook 
and the ARRL Antenna Book and study the relevant sections on antennas. 
Both are updated every 2-4 years, but the changes are a small fraction 
of the content, so a used copy is plenty good enough. Ask around your 
local ham club -- it's very likely you'll find a ham willing to sell one.


73, Jim K9YC

On 12/6/2019 12:27 PM, Steve Hull wrote:

I wonder what would happen if you moved the 1:1 choke to the other end of
your feedline (closer to your K3)?

-Steve

On Fri, Dec 6, 2019, 11:41 AM Jobst Vandrey  wrote:


I have been trying to come up with a antenna for use in an apartment with
only limited success.  I have now set up the Elecraft AX-1 antenna and it
seems to play well with my K3 indoors with the antenna  placed in a window
supported by a folding camera tripod.

One caveat is that there seems to be significant feedline RF so a 1:1
isolation transformer near the antenna feed point is an absolute
requirement.  Without the transformer, even 1 watt transmissions  caused
various nasty computer gremlins when using digital modes.

My apartment no longer needs to be a maze of wires and switches - many
thanks to Elecraft for this excellent product.

Jobst
AC0LP
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Re: [Elecraft] AX-1 whip antenna

[Jobst Vandrey]

Sorry - I don't have very short jumpers available right now for that test -
the actual setup has 2 feet of coax between the antenna and the isolation
transformer followed by 4 feet of coax to the K3 connector.  This
configuration  works fine when testing in FT8 mode at 20 watts on 20 meters
and also on 40 meters (when using the AEX1 extender).

Jobst
AC0LP

On Fri, Dec 6, 2019 at 3:27 PM Steve Hull  wrote:

> I wonder what would happen if you moved the 1:1 choke to the other end of
> your feedline (closer to your K3)?
>
> -Steve
>
> On Fri, Dec 6, 2019, 11:41 AM Jobst Vandrey  wrote:
>
>> I have been trying to come up with a antenna for use in an apartment with
>> only limited success.  I have now set up the Elecraft AX-1 antenna and it
>> seems to play well with my K3 indoors with the antenna  placed in a window
>> supported by a folding camera tripod.
>>
>> One caveat is that there seems to be significant feedline RF so a 1:1
>> isolation transformer near the antenna feed point is an absolute
>> requirement.  Without the transformer, even 1 watt transmissions  caused
>> various nasty computer gremlins when using digital modes.
>>
>> My apartment no longer needs to be a maze of wires and switches - many
>> thanks to Elecraft for this excellent product.
>>
>> Jobst
>> AC0LP
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Re: [Elecraft] QRQ + and the K4 question

[K9MA]

With AGC-F set to 200, "new" QSK, tnd the new synthesizers, I can just 
barely hear between the dots at 24 wpm. (non-QRQ mode).


That's the only thing a miss about my old FT-1000D. No one misses the 
key clicks.


73,
Scott K9MA

On 12/6/2019 12:26, Wayne Burdick wrote:

The K3 can only hear between words above about 10 wpm, and QRQ mode doesn't 
help much.

This depends on how the K3 is configured. There are two QSK settings (see 
CONFIG:CW WGHT menu entry), and with one of them, along with proper adjustment 
of AGC, it's possible to hear between dots at well over 20 WPM. The new 
synthesizer (KSYN3A) also improved QSK times.



--
Scott  K9MA

k...@sdellington.us

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Re: [Elecraft] AX-1 whip antenna

[Bob McGraw K4TAX]

In most applications there should be 2 RF chokes.  The first RF choke 
should be at the antenna feed point, and a 2nd RF choke at the radio.  I 
find that Jim, K9YC has done excellent work in this regard.   This is a 
case where many hams and balun companies only go at the problem "half 
baked".    Thus if one is using a balun at the top side, one needs to be 
used at the bottom side as well.  In this case the word "balun" is 
implying a 1:1 RF choke.


73

Bob, K4TAX


On 12/6/2019 2:27 PM, Steve Hull wrote:

I wonder what would happen if you moved the 1:1 choke to the other end of
your feedline (closer to your K3)?

-Steve




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Re: [Elecraft] K3S accessories availability, moving forward

[Bob McGraw K4TAX]

Ed explained it quite well.   I would add that when a product is 
discontinued usually the options, being also considered as product, will 
go away as well.   This does not imply that repair parts are 
discontinued.   It is often confusing to users when a product is not 
longer available that service parts of the same items are available.  
Usually one has a product model number and the other has a service part 
number.


After a product is obsoleted, where I previously worked, we planned 
service parts supports for some 7 or so years.  There is no legal 
requirement for a company to do this with consumer type products.   
Often we missed the projection and ran out early.  In some cases it was 
the customers that ordered an excessive number of service parts {so they 
could have spares} and this drew down the projected service parts 
inventory.    And then too, the accountants came around asking what is 
all of this on the shelves for the last 5 years with no usage?   Get rid 
of the inventory as it is costing the company money. The customer 
looses either way.


73

Bob, K4TAX


On 12/6/2019 1:00 PM, Edward R Cole wrote:
Don explained it well; Elecraft support appears to continue for the 
K3, K3S.  Obtaining new options apparently has a shorter life-span.





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Re: [Elecraft] AX-1 whip antenna

[Steve Hull]

I wonder what would happen if you moved the 1:1 choke to the other end of
your feedline (closer to your K3)?

-Steve

On Fri, Dec 6, 2019, 11:41 AM Jobst Vandrey  wrote:

> I have been trying to come up with a antenna for use in an apartment with
> only limited success.  I have now set up the Elecraft AX-1 antenna and it
> seems to play well with my K3 indoors with the antenna  placed in a window
> supported by a folding camera tripod.
>
> One caveat is that there seems to be significant feedline RF so a 1:1
> isolation transformer near the antenna feed point is an absolute
> requirement.  Without the transformer, even 1 watt transmissions  caused
> various nasty computer gremlins when using digital modes.
>
> My apartment no longer needs to be a maze of wires and switches - many
> thanks to Elecraft for this excellent product.
>
> Jobst
> AC0LP
> __
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Re: [Elecraft] HI CUR error on 6M

[IK4EWX]

Have you tried to insert the K3 ATU and see if it solved?

Ian IK4EWX



--
Sent from: http://elecraft.365791.n2.nabble.com/
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Re: [Elecraft] K3 Parts For Sale

[ockmrzr]

I recently purchased a used K3 and decided to upgrade it.  I now have a few
spare parts I would like to sell.

 

2x - KSYN3 synthesizer module

1x - KIO3A (3 board set) I/O interface

1x - KXV3A Transverter Interface

1x - KFL3A-500, 500 Hz CW/DATA Roofing Filter

2x - KFL3A-1.8, 1.8 kHz Roofing Filter

 

If you are interested in purchasing any or all, please email me directly at
n...@arrl.net   for details.

 

73 de Bruce, N7TY

Yuma, AZ

www.qsl.net/n7ty  

 

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Re: [Elecraft] TCXO drift and calibration

[John Stengrevics]

Gary,

I had the same problem.  After 3 years, I had to replace the TCXO which had 
clearly become defective.

I still need to recalibrate periodically.

I don’t operate HF, so hearing WWV is sometimes difficult.  A good way to 
calibrate is to have a local, who is dead-on calibrated, send CQ on FT8.  You 
can adjust the ref cal to get it right.

73,

John
WA1EAZ 

> On Dec 6, 2019, at 2:24 PM, Edward R Cole  wrote:
> 
> To add a little to what Wes said:
> 
> The K3 TCXO rest freq is 49,380 KHz.  It is a temperature corrected 
> oscillator so will still drift with radio warm up but less than a 
> non-compensated oscillator.So best to calibrate after at least 30-minutes 
> warmup.  If you have the 100w model K3, there will be some temperature drift 
> when transmitting (varies with mode and frequency band).
> 
> I have the EXREF installed with the TCXO-03 and that holds my 50-MHz signal 
> within 3 Hz.  But if you check the TCXO frequency (CONFIG: REF CAL) you will 
> see the frequency drift.  Mine seems to top out at about 49.380.090 and then 
> hold within a few .001.
> 
> The EXREF takes the need for periodic re-calibration away.  But your 10-MHz 
> reference needs to be very accurate/stable.  I use a surplus OCXO that needs 
> re-calib about every 4-6 months (usually only 1-Hz drift).  My OCXO runs 24/7 
> to avoid warm up drift.
> 
> Hope that helps.
> 
> 73, Ed  - KL7UW
> 
> From: "Gary Peterson" 
> To: 
> Subject: [Elecraft] TCXO drift and calibration
> Message-ID: 
> Content-Type: text/plain;   charset="iso-8859-1"
> 
> Last February, I purchased a factory assembled K3S including a 1 ppm TCXO.  
> The transceiver is serial number 11803 and the firmware was updated on May 
> 5th of this year.
> 
> Last July, I noticed that many of the signals on 50.125 MHz sounded as if 
> they were a bit off frequency as they were higher pitched.  This led me to 
> believe that the reference oscillator may have drifted, possibly due to 
> crystal aging.
> 
> Subsequently, I used method 2 and WWV, as described on page 53 of the 
> Elecraft K3S manual.  The REF CAL frequency was lowered from 49.999.996 to 
> 49.379.448.  That seemed to make the signals on the 6 meter calling frequency 
> sound like they should.
> 
> A few days ago, I caught a six meter opening and signals on 50.125 sounded 
> higher pitched again.  I repeated the reference oscillator calibration again, 
> using method 2.  Now, the REF CAL frequency is set to 49.379.110.  I have not 
> had the opportunity to hear any six meter signals, since I changed the 
> reference oscillator.
> 
> I am wondering if the REF CAL frequency change that I have seen in less than 
> a year is normal, or whether I have a TCXO problem.
> 
> Any thoughts would be most appreciated.  Thanks in advance for any time taken 
> to reply.
> 
> Gary, K0CX
> Rapid City, SD
> 
> 
> 73, Ed - KL7UW
>  http://www.kl7uw.com
> Dubus-NA Business mail:
>  dubus...@gmail.com 
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Re: [Elecraft] TCXO drift and calibration

[Edward R Cole]

To add a little to what Wes said:

The K3 TCXO rest freq is 49,380 KHz.  It is a temperature corrected 
oscillator so will still drift with radio warm up but less than a 
non-compensated oscillator.So best to calibrate after at least 
30-minutes warmup.  If you have the 100w model K3, there will be some 
temperature drift when transmitting (varies with mode and frequency band).


I have the EXREF installed with the TCXO-03 and that holds my 50-MHz 
signal within 3 Hz.  But if you check the TCXO frequency (CONFIG: REF 
CAL) you will see the frequency drift.  Mine seems to top out at 
about 49.380.090 and then hold within a few .001.


The EXREF takes the need for periodic re-calibration away.  But your 
10-MHz reference needs to be very accurate/stable.  I use a surplus 
OCXO that needs re-calib about every 4-6 months (usually only 1-Hz 
drift).  My OCXO runs 24/7 to avoid warm up drift.


Hope that helps.

73, Ed  - KL7UW

From: "Gary Peterson" 
To: 
Subject: [Elecraft] TCXO drift and calibration
Message-ID: 
Content-Type: text/plain;   charset="iso-8859-1"

Last February, I purchased a factory assembled K3S including a 1 ppm 
TCXO.  The transceiver is serial number 11803 and the firmware was 
updated on May 5th of this year.


Last July, I noticed that many of the signals on 50.125 MHz sounded 
as if they were a bit off frequency as they were higher 
pitched.  This led me to believe that the reference oscillator may 
have drifted, possibly due to crystal aging.


Subsequently, I used method 2 and WWV, as described on page 53 of the 
Elecraft K3S manual.  The REF CAL frequency was lowered from 
49.999.996 to 49.379.448.  That seemed to make the signals on the 6 
meter calling frequency sound like they should.


A few days ago, I caught a six meter opening and signals on 50.125 
sounded higher pitched again.  I repeated the reference oscillator 
calibration again, using method 2.  Now, the REF CAL frequency is set 
to 49.379.110.  I have not had the opportunity to hear any six meter 
signals, since I changed the reference oscillator.


I am wondering if the REF CAL frequency change that I have seen in 
less than a year is normal, or whether I have a TCXO problem.


Any thoughts would be most appreciated.  Thanks in advance for any 
time taken to reply.


Gary, K0CX
Rapid City, SD


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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Re: [Elecraft] K3S accessories availability, moving forward

[Edward R Cole]

Don explained it well; Elecraft support appears to continue for the 
K3, K3S.  Obtaining new options apparently has a shorter life-span.


If I were shelling out new dollars at this point I would get the K4 
vs K3S so seems a logical shift in emphasis.  I am happy with my 
circa-2010 K3, KX3, KXPA100.  At my point in life, long-term 
investments seem illogical.  Though if money were no issue I'd pick 
up a K4 and KPA500...and maybe a sports car with obligatory blonde 
accessory - haha


But as someone else pointed out, I did upgrade my k3 with two synth 
boards and the gen purpose bw filter (to use 630m).


BTW the old synth boards are on the "dusty shelf" (in plastic bags) 
and available free to anyone paying for shipping.


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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[Elecraft] USB to Serial Adapters

[Steve & Anne Ray]

While I have not had any problems with the USB to Serial Adapter with my K2,
I did have problems with the USB ports on another computer, not my ham
station computer.   I had a printer, mouse, scanner and keyboard on USB from
the computer, this computer did not have a USB to Serial Adapter.
Everything worked fine except the scanner.  When I disconnected the printer,
the scanner worked fine.  I bought a powered splitter for USB and solved the
problem allowing all the devices to work correctly. 73, Steve K4JPN

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Re: [Elecraft] QRQ + and the K4 question

[Wayne Burdick]

> On Dec 6, 2019, at 9:47 AM, K9MA  wrote:
> 
> A related question: Will the latency and turn-around time of the K4 be fast 
> enough for true QSK operation?

Yes. Since the K4's signal processing for CW is primarily in the time domain, 
it has a distinct advantage over those that batch-process signals using FFTs 
and IFFTs (frequency domain). 


> The K3 can only hear between words above about 10 wpm, and QRQ mode doesn't 
> help much.

This depends on how the K3 is configured. There are two QSK settings (see 
CONFIG:CW WGHT menu entry), and with one of them, along with proper adjustment 
of AGC, it's possible to hear between dots at well over 20 WPM. The new 
synthesizer (KSYN3A) also improved QSK times.

73,
Wayne
N6KR




> 
> 73,
> Scott K9MA
> 
> 
> On 12/6/2019 09:13, Wayne Burdick wrote:
>> As an SDR, the K4 has no need to shift an oscillator between RX and TX mode. 
>> So there’s no need for “QRQ mode.”
>> 
>> Wayne
>> N6KR
>> 
>> 
>> elecraft.com
>> 
>>> On Dec 6, 2019, at 3:58 AM, Steven G. Steltzer  wrote:
>>> 
>>> Will the K4 do away with the annoyance of the RIT/XIT turning off QRQ+ mode?
>>> 
>>> Thanks,
>>> Steve, WF3T
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> 
> 
> -- 
> Scott  K9MA
> 
> k...@sdellington.us
> 
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Re: [Elecraft] [K2] USB version for USB to serial adapter

[Phil Kane]

On 12/6/2019 7:45 AM, NJMike wrote:

> My question is this - can I use any version of USB (1.1, 2.0, 3.0) to
> serial adapter to connect the tablet to the K2 cable or is one better
> than the others?

My experience with "mix and match" USB ports and devices caused a bit of
problems.  My external backup drive is in a USB-3 housing, and I
connected it to one of my Dell tower's USB-3 port with a USB-3-rated
cable.  I experienced quite a number of  failures to recognize the drive
at backup time. After replacing both the drive disk and housing, the
results were the  same.  When I moved the cable to one of the computer's
USB-2 port, the problem went away.

The upshot of all this is, to paraphrase an otherwise forgettable MIT
professor of many decades ago "this USB not the same as that USB - I
only did that to con-fuse you".

I'll let Don and the rest of the experts here give more accurate answers.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] QRQ + and the K4 question

[K9MA]

A related question: Will the latency and turn-around time of the K4 be 
fast enough for true QSK operation? The K3 can only hear between words 
above about 10 wpm, and QRQ mode doesn't help much.


73,
Scott K9MA


On 12/6/2019 09:13, Wayne Burdick wrote:

As an SDR, the K4 has no need to shift an oscillator between RX and TX mode. So 
there’s no need for “QRQ mode.”

Wayne
N6KR


elecraft.com


On Dec 6, 2019, at 3:58 AM, Steven G. Steltzer  wrote:

Will the K4 do away with the annoyance of the RIT/XIT turning off QRQ+ mode?

Thanks,
Steve, WF3T
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--
Scott  K9MA

k...@sdellington.us

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Re: [Elecraft] [K2] USB version for USB to serial adapter

[Don Wilhelm]

Mike,

One of the potential problems is that the K2 works at 4800 baud, which 
by current standards is slow.


The problem is that some USB to serial adapters do not like to run at 
that slow speed.  I have tested the Elecraft KUSB with my K2, and I also 
can state the my 4 port Edgeport USB to serial converter works well.

I have also used a Keyspan adapter.

If you can arrange a "return if it does not work" arrangement with the 
place where you buy it, that would be beneficial.

You can use a USB 1.1 or 2.0 or 3.0 adapter.

73,
Don W3FPR

On 12/6/2019 10:45 AM, NJMike wrote:

I want to connect my Windows 10 tablet to my K2.  I have the KIO2 module
installed and I have built the K2 serial cable.  I have read the relevant
material on the Elecraft website about avoiding the Prolific chipset.  The
USB port on my tablet is 3.0.  My question is this - can I use any version
of USB (1.1, 2.0, 3.0) to serial adapter to connect the tablet to the K2
cable or is one better than the others?

Thanks,
Mike



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[Elecraft] AX-1 whip antenna

[Jobst Vandrey]

I have been trying to come up with a antenna for use in an apartment with
only limited success.  I have now set up the Elecraft AX-1 antenna and it
seems to play well with my K3 indoors with the antenna  placed in a window
supported by a folding camera tripod.

One caveat is that there seems to be significant feedline RF so a 1:1
isolation transformer near the antenna feed point is an absolute
requirement.  Without the transformer, even 1 watt transmissions  caused
various nasty computer gremlins when using digital modes.

My apartment no longer needs to be a maze of wires and switches - many
thanks to Elecraft for this excellent product.

Jobst
AC0LP
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Re: [Elecraft] [K2] USB version for USB to serial adapter

[Buck]

There were many counterfeit chips so the patent holders put code in 
their drivers to disable the counterfeits.  The USB version (1, 2 or 3) 
does not matter.  You want to get a genuine converter.  Best way to 
guarantee that is to buy your converter cable from a reputable source. 
Elecraft sells one. So does MFJ.  I am sure there are others.  Just 
don't get some cheap knock-off from the Internet.


Buck, k4ia
Honor Roll
8BDXCC
EasyWayHamBooks.com

On 12/6/2019 10:45 AM, NJMike wrote:

I want to connect my Windows 10 tablet to my K2.  I have the KIO2 module
installed and I have built the K2 serial cable.  I have read the relevant
material on the Elecraft website about avoiding the Prolific chipset.  The
USB port on my tablet is 3.0.  My question is this - can I use any version
of USB (1.1, 2.0, 3.0) to serial adapter to connect the tablet to the K2
cable or is one better than the others?

Thanks,
Mike



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Re: [Elecraft] Replaced Module Value

[hawley, charles j jr]

Of course it varies. I think right now, the value of the earlier modules in the 
K3 are not worth much, but if someone needs an item to restore function to a K3 
and the cupboard is bare at Elecraft, then the value goes up. I would just hang 
on to them if someone doesn't have a good reason to need one for postage.

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

 Amateur Radio, KE9UW
 aka Jack, BMW Motorcycles


From: elecraft-boun...@mailman.qth.net  on 
behalf of Wilson Lamb 
Sent: Friday, December 6, 2019 8:12 AM
To: elecraft@mailman.qth.net 
Subject: [Elecraft] Replaced Module Value

I bought a used K3 (works fine) with updated synth and transverter interface.
I was politely told that the interface module was worth the cost of postage.
Are the original synths worth anything?
Wilson
W4BOH
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[Elecraft] [K2] USB version for USB to serial adapter

[NJMike]

I want to connect my Windows 10 tablet to my K2.  I have the KIO2 module
installed and I have built the K2 serial cable.  I have read the relevant
material on the Elecraft website about avoiding the Prolific chipset.  The
USB port on my tablet is 3.0.  My question is this - can I use any version
of USB (1.1, 2.0, 3.0) to serial adapter to connect the tablet to the K2
cable or is one better than the others?

Thanks,
Mike



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Re: [Elecraft] K3S accessories availability, moving forward

[john]

The K3S and accessories becoming obsolete seems to be uncharastic of  
Elecraft. I own three K3s's, one is pretty stock however I am not  
ready to add options to it now. I thought that all of my K3s's would  
be upgradable as technology improved or when I wanted to add more  
features, just as was done with the original K3.  The K2 was never  
obsoleted so I certainly did not expect that to happen with the  
current K3S transceiver. I think it's a poor financial plan to borrow  
money for accessories that you may want in the future.


John KK9A


Don Wilhelm donwilh at embarqmail.com
Thu Dec 5 17:22:30 EST 2019

Mike,

The filters definitely, they are the same ones used in the K4.
The 2nd RX and 2m option may or may not be available.  They are building
no more, so whenever stock is depleted, they will be gone.

You might want to consider putting them on a credit card and pay it off
monthly.

73,
Don W3FPR

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Re: [Elecraft] QRQ + and the K4 question

[Wayne Burdick]

As an SDR, the K4 has no need to shift an oscillator between RX and TX mode. So 
there’s no need for “QRQ mode.”

Wayne
N6KR


elecraft.com

> On Dec 6, 2019, at 3:58 AM, Steven G. Steltzer  wrote:
> 
> Will the K4 do away with the annoyance of the RIT/XIT turning off QRQ+ mode? 
> 
> Thanks,
> Steve, WF3T
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[Elecraft] Replaced Module Value

[Wilson Lamb]

I bought a used K3 (works fine) with updated synth and transverter interface.
I was politely told that the interface module was worth the cost of postage.
Are the original synths worth anything?
Wilson
W4BOH
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[Elecraft] K3

[jstoneback via Elecraft]

Thanks for the K3 Utility info. Does anyone have a 500 Hz filter to 
spare?73,Jim K4AXF K3 #4936Sent from my Boost Mobile Phone.
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[Elecraft] QRQ + and the K4 question

[Steven G. Steltzer]

Will the K4 do away with the annoyance of the RIT/XIT turning off QRQ+ mode? 

Thanks,
Steve, WF3T
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Re: [Elecraft] K3S accessories availability, moving forward

[Victor Rosenthal 4X6GP]

Mike,

There is one K3S option that you should definitely add to a K3 if you 
like CW: the updated synthesizer (2 of them if you have the 
subreceiver). It makes a great deal of difference if you send CW at more 
than about 30 wpm. There is a QRQ mode that helps, but it has downsides. 
Of course the improved receiver IMD and phase noise performance is also 
helpful if you are a contester.


73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/

On 06/12/2019 1:08, Mike Smith VE9AA wrote:
Thanks Don. I am sitting on the fence what course of action to take. 
I'd really like to find a K3 (non S) in Canada, but there are not too

many around. Barring that, a K3 in the USA from someone I know (ie:
trust).  Also difficult, but not impossible.

I don't really need an "S" nor a K4, as 90% of what I do is just
contest for fun.  I have a pair of IC-7410's in my SO2R setup and an
older but loaded K3 which I only use as a travel/expedition type rig,
but tossing around the idea of making the main setup a "pair of K3's"
(plural, not "S",. hi)

Thanks for the info/advice.  Always appreciate your no nonsense words
and great work.

73 de Mike VE9AA

Mike, Coreen & Corey Keswick Ridge, NB

-Original Message- From: Don Wilhelm
[mailto:donw...@embarqmail.com] Sent: December 5, 2019 6:23 PM To:
Mike Smith VE9AA; Elecraft@mailman.qth.net Subject: Re: [Elecraft]
K3S accessories availability, moving forward

Mike,

The filters definitely, they are the same ones used in the K4. The
2nd RX and 2m option may or may not be available.  They are building 
no more, so whenever stock is depleted, they will be gone.


You might want to consider putting them on a credit card and pay it
off monthly.

73, Don W3FPR

On 12/5/2019 5:09 PM, Mike Smith VE9AA wrote:

If I was to purchase a new (barebones) K3S today, what are the
chances the 2nd receiver module, filters, 2m module and whatever
else are going to be available a year from now (when I can afford
more) ?


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