Re: [Elecraft] The Technical Side of Ham Radio

[Ian White]

>The questions might be on the test, but the ANSWERS are wild in the
>world, you know?
>
>Cortland
>KA5S

Thanks - that's a great quote.

73 from Ian GM3SEK


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

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

[Elecraft] 10 MHz Reference Oscillator

[Joel Black]

I may be in need of providing a 10 MHz reference clock to my K3. I know I’d 
need to purchase the K3EXREF board for this. Without having to cobble together 
(I’m not a good “cobbler” of shoes or stuff) too much unless it comes in a kit, 
what are folks using that could be had for relatively low cost?

Although this would be nice to have, 
http://www.jrmiller.demon.co.uk/projects/ministd/frqstd.htm 
, something 
significantly less would be better. At the current exchange rate, this device 
is close to $500.

Thanks,
Joel - W4JBB
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] 10 MHz Reference Oscillator

[David Anderson]

For DIY see:

http://la3za.blogspot.co.uk/2015/10/just-good-enough-10-mhz-reference.html

Ready Built:

There is also the excellent Leo Bodnar GPS unit
Tiny fits in palm of your hand, low power consumption and fast locking. In 
itself a great frequency source that goes up to 800 MHz.

http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=107&products_id=234

On auction sites you may also see 10 MHz GPSDO by BG7TBL from China at 
reasonable prices, along with matching distribution amplifiers. 



73

David Anderson GM4JJJ 

> On 31 Oct 2015, at 12:40, Joel Black  wrote:
> 
> I may be in need of providing a 10 MHz reference clock to my K3. I know I’d 
> need to purchase the K3EXREF board for this. Without having to cobble 
> together (I’m not a good “cobbler” of shoes or stuff) too much unless it 
> comes in a kit, what are folks using that could be had for relatively low 
> cost?
> 
> Although this would be nice to have, 
> http://www.jrmiller.demon.co.uk/projects/ministd/frqstd.htm 
> , something 
> significantly less would be better. At the current exchange rate, this device 
> is close to $500.
> 
> Thanks,
> Joel - W4JBB
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to gm4...@yahoo.co.uk
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] kpa500 doesnt follow k3

[Chortek Bob via Elecraft]

Hi Scott,
I have the same problem and have not been able to solve it
It worked perfectly for a few days and then it developed the symptoms you 
described - plus the auto power select stopped working on the K3 (rig no longer 
goes from high power to low power when the KPA500 is enabled).  I will see what 
suggestions you get.
I may need to send both back to Elecraft to have them look over the equipment.
73,
Bob/AA6VB
  From: NE9U - Jasper 
 To: "Elecraft@mailman.qth.net"  
 Sent: Friday, October 30, 2015 10:23 PM
 Subject: [Elecraft] kpa500 doesnt follow k3
   
Just hooked  a new kpa500 to a k3.  

when switching bands on the k3, the kpa500 doesnt follow.  it does follow when 
i apply power.

the reverse does workif i switch bands on the kpa500, the k3 follows.

tried 2 different auxillary cables...same result with both.

am i missing some setting i need to change?  

scott  ne9u


Sent from Republic Wireless Cray-1
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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


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

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

Re: [Elecraft] kpa500 doesnt follow k3

[Chortek Bob via Elecraft]

Hi Scott,
Sorry.  
As it turns out, after double checking, I have the opposite problem! The KPA500 
follows the K3 just fine but the K3 will not follow the KPA500.  A press of the 
band buttons on the KPA500 has no effect on either the KPA500 or the K3.  
Strange, no?
73,
Bob/AA6VB
  From: Chortek Bob via Elecraft 
 To: NE9U - Jasper ; "Elecraft@mailman.qth.net" 
 
 Sent: Saturday, October 31, 2015 6:50 AM
 Subject: Re: [Elecraft] kpa500 doesnt follow k3
   
Hi Scott,
I have the same problem and have not been able to solve it
It worked perfectly for a few days and then it developed the symptoms you 
described - plus the auto power select stopped working on the K3 (rig no longer 
goes from high power to low power when the KPA500 is enabled).  I will see what 
suggestions you get.
I may need to send both back to Elecraft to have them look over the equipment.
73,
Bob/AA6VB
      From: NE9U - Jasper 
 To: "Elecraft@mailman.qth.net"  
 Sent: Friday, October 30, 2015 10:23 PM
 Subject: [Elecraft] kpa500 doesnt follow k3
  
Just hooked  a new kpa500 to a k3.  

when switching bands on the k3, the kpa500 doesnt follow.  it does follow when 
i apply power.

the reverse does workif i switch bands on the kpa500, the k3 follows.

tried 2 different auxillary cables...same result with both.

am i missing some setting i need to change?  

scott  ne9u


Sent from Republic Wireless Cray-1
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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




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

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

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

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

[Elecraft] 10 MHz Reference Oscillator

[Ron Durie]

These OCXOs are less than 2" cube in size and available on e-Bay from
several dealers.  They cost about $30. 
Search for: MORION MV89A.  My date is 08/18.  This is a 2008 year unit.  My
unit is hermetically sealed with NO adjustment available.  It is a double
oven model, made in St Petersburg.  It is very accurate up to 10 to the -9
or better.  More than enough accuracy for a K3.

I AM USING A MORION MV89A directly into my K3.  It runs on 12v and has
fantastic accuracy for the K3.  It is basically on Frequency from cold start
to as warm as you use it.  You never have to adjust your reference
oscillator in the K3 again.  My MV89A runs on 12v continuously.  It is not
practical, or advisable to turn it off and on with the K3.  From a cold turn
on the MV89A will take up to 40 minutes to get up on, or close to,
frequency.  

The Trimble Thunderbolt is the best option and the most accurate, for a
service bench environment.  I have one running on my service bench.  It
works fine on the K3, however it is over-kill for the K3 and it is complex
with several boxes and a GPS antenna, etc. etc.  

Ron Durie
WB4OOA Elecraft K-Line



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

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

[Elecraft] Has anyone Interfaced a K3S and OM2500A

[charles]

Having no success getting my Flex 6500 to interface with my OM2500A 
using ddutil and assorted null modems and serial to USB adapters.  Think 
of purchasing a K3S since it has a RS232 port that can interface 
directly to the OM2500A without the computer/USB adapter/ddutil stuff.  
Before making the jump, there are some questions I have about about the 
K3S/OM2500A combination:


1. Does anyone out there have a K3S successfully interfaced to a OM2500A 
amp using the RS232 post on the K3S?


2.  Since the K3S has up/down buttons for band changes, does the OM2500A 
reposition the load and tune stepper motors for each band on the way to 
the intended band.  In other words, on a rapid band change from 80m to 
10m, would the OM2500A reposition the tune and load stepper motors for 
40M then 30M, then 20M, then 17M, then 15M, then 12M, before 
repositioning the stepper motors for 10 meters?


3.  If the OM2500A does have to reposition the stepper motors for every 
band on the way to the intended band, is there some workaround using the 
K3S memories to go directly to the desired band without stepping through 
every band on the way to the desired band?


Thanks for the helkp,

Charles  K5UA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] 10 MHz Reference Oscillator

[brian]

Ron,

The MV89A is pretty incredible-- especially for the price.

I think two statements in your posting contradict each other though.
It isn't basically "on frequency" from a cold start.   It drifts 10's of 
Hz until the oven temp and oscillator stabilizes.

The second statement about taking 40 minutes is more accurate.

Upon receipt of mine, there was some calibration needed to have it 
accurate < 1 Hz.


After calibration and warmups of 2 hours to days, the residual drift was 
incredibly low <0.003 Hz/day!


For those who can live with it being powered continuously, it is an 
excellent unit to discipline the K3.


73 DE Brian/K3KO


On 10/31/2015 14:08 PM, Ron Durie wrote:

These OCXOs are less than 2" cube in size and available on e-Bay from
several dealers.  They cost about $30.
Search for: MORION MV89A.  My date is 08/18.  This is a 2008 year unit.  My
unit is hermetically sealed with NO adjustment available.  It is a double
oven model, made in St Petersburg.  It is very accurate up to 10 to the -9
or better.  More than enough accuracy for a K3.

I AM USING A MORION MV89A directly into my K3.  It runs on 12v and has
fantastic accuracy for the K3.  It is basically on Frequency from cold start
to as warm as you use it.  You never have to adjust your reference
oscillator in the K3 again.  My MV89A runs on 12v continuously.  It is not
practical, or advisable to turn it off and on with the K3.  From a cold turn
on the MV89A will take up to 40 minutes to get up on, or close to,
frequency.

The Trimble Thunderbolt is the best option and the most accurate, for a
service bench environment.  I have one running on my service bench.  It
works fine on the K3, however it is over-kill for the K3 and it is complex
with several boxes and a GPS antenna, etc. etc.

Ron Durie
WB4OOA Elecraft K-Line



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

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


-
No virus found in this message.
Checked by AVG - www.avg.com
Version: 2016.0.7163 / Virus Database: 4455/10921 - Release Date: 10/31/15




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

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

Re: [Elecraft] The Technical Side of Ham Radio

[Wes (N7WS)]

That's it.

On 10/30/2015 9:51 PM, Alan wrote:

On 10/30/2015 07:56 PM, Wes (N7WS) wrote:

Before springing for this I would suggest reading the RSGB review.


I found on the Signal Hound web site a copy of a review by G4DDK in September 
2011 RADCOM (Journal of the RSGB).  Is that the one you are referring to?


https://signalhound.com/sigdownloads/SA44B/SA44B-IndependentReview.pdf

The only major complaint he had was that the screen update rate is slow for 
wide sweeps.  (OK for narrow sweeps)  He concluded:


   Overall I was very pleased with the performance of the SA44B.
   If I didn't already possess a good spectrum analyser I could be
   very tempted to buy one of these. The TG44 is perfectly useable and
   has excellent frequency coverage.

(The TG44 is the optional tracking generator.)

Alan N1AL



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

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

Re: [Elecraft] kpa500 doesnt follow k3

[Jim - KE8G]

Hi Bob,
It really sounds like a menu setting has been changed.  Take a look at this:

When driving the KPA500 with an Elecraft K3, use the K3’s per-band power 
control to set the
amplifier output just below the desired peak output on each band. Do not rely 
on ALC to control
the power output (see Using ALC, pg 17). 

At the K3, set CONFIG:POWER SET to Per Band. See
Per-Band Power Control in your K3 Owner’s manual for further details.
If you use the AUX cable interface between the K3 and KPA500 (pg 26), the KPA500
will send the OPER/STBY status to the K3. You can then set two per-band power 
levels at
the K3: one to drive the KPA500 when it is in OPER mode and another for 
pass-through
transmitting when the KPA500 is in STBY. The K3 will automatically furnish your 
preset
power levels as you switch the KPA500 between OPER and STBY.

73 de Jim - KE8G


 Chortek Bob via Elecraft  wrote: 
> Hi Scott,
I have the same problem and have not been able to solve it
It worked perfectly for a few days and then it developed the symptoms you 
described - plus the auto power select stopped working on the K3 (rig no longer 
goes from high power to low power when the KPA500 is enabled).  I will see what 
suggestions you get.
I may need to send both back to Elecraft to have them look over the equipment.
73,
Bob/AA6VB
  From: NE9U - Jasper 
 To: "Elecraft@mailman.qth.net"  
 Sent: Friday, October 30, 2015 10:23 PM
 Subject: [Elecraft] kpa500 doesnt follow k3
   
Just hooked  a new kpa500 to a k3.  

when switching bands on the k3, the kpa500 doesnt follow.  it does follow when 
i apply power.

the reverse does workif i switch bands on the kpa500, the k3 follows.

tried 2 different auxillary cables...same result with both.

am i missing some setting i need to change?  

scott  ne9u


Sent from Republic Wireless Cray-1
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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


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

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to k...@cox.net
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] kpa500 doesnt follow k3

[Chortek Bob via Elecraft]

Hi Jim,
Thanks. That is exactly how I had - and have - it set up, and it worked fine 
for a while and then stopped.
Now, the K3 will no longer go to full power when the amp is in standby and 
reduce power when the KPA500 is enabled. Also, the band buttons on the KPA500 
will no longer work when the K3 is turned on, but will when the K3 is off.  The 
KPA500 will follow band changes on the K3.  
As I said, all was well for a while, but no amount of fidding has corrected the 
problem and none of the suggestions from Elecraft have helped.  It may be some 
hardware has been damaged. The two units may need to go to the mother ship.
Thanks for your help. Any other suggestions are most welcome.
73,
Bob/AA6VB
  From: Jim - KE8G 
 To: NE9U - Jasper ; Chortek Bob  
Cc: Chortek Bob via Elecraft  
 Sent: Saturday, October 31, 2015 8:14 AM
 Subject: Re: [Elecraft] kpa500 doesnt follow k3
   
Hi Bob,
It really sounds like a menu setting has been changed.  Take a look at this:

When driving the KPA500 with an Elecraft K3, use the K3’s per-band power 
control to set the
amplifier output just below the desired peak output on each band. Do not rely 
on ALC to control
the power output (see Using ALC, pg 17). 

At the K3, set CONFIG:POWER SET to Per Band. See
Per-Band Power Control in your K3 Owner’s manual for further details.
If you use the AUX cable interface between the K3 and KPA500 (pg 26), the KPA500
will send the OPER/STBY status to the K3. You can then set two per-band power 
levels at
the K3: one to drive the KPA500 when it is in OPER mode and another for 
pass-through
transmitting when the KPA500 is in STBY. The K3 will automatically furnish your 
preset
power levels as you switch the KPA500 between OPER and STBY.

73 de Jim - KE8G


 Chortek Bob via Elecraft  wrote: 
> Hi Scott,
I have the same problem and have not been able to solve it
It worked perfectly for a few days and then it developed the symptoms you 
described - plus the auto power select stopped working on the K3 (rig no longer 
goes from high power to low power when the KPA500 is enabled).  I will see what 
suggestions you get.
I may need to send both back to Elecraft to have them look over the equipment.
73,
Bob/AA6VB
      From: NE9U - Jasper 
 To: "Elecraft@mailman.qth.net"  
 Sent: Friday, October 30, 2015 10:23 PM
 Subject: [Elecraft] kpa500 doesnt follow k3
  
Just hooked  a new kpa500 to a k3.  

when switching bands on the k3, the kpa500 doesnt follow.  it does follow when 
i apply power.

the reverse does workif i switch bands on the kpa500, the k3 follows.

tried 2 different auxillary cables...same result with both.

am i missing some setting i need to change?  

scott  ne9u


Sent from Republic Wireless Cray-1
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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


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

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

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

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

Re: [Elecraft] 10 MHz Reference Oscillator

[David Anderson]

I should also have linked to the USA importer of the Leo Bodnar unit

http://www.force12inc.com/products/gps-locked-precision-frequency-reference-low-jitter-gps-clock-450-hz-to-800-mhz-output.html

73

David Anderson GM4JJJ 

> On 31 Oct 2015, at 13:38, David Anderson  wrote:
> 
> For DIY see:
> 
> http://la3za.blogspot.co.uk/2015/10/just-good-enough-10-mhz-reference.html
> 
> Ready Built:
> 
> There is also the excellent Leo Bodnar GPS unit
> Tiny fits in palm of your hand, low power consumption and fast locking. In 
> itself a great frequency source that goes up to 800 MHz.
> 
> http://www.leobodnar.com/shop/index.php?main_page=product_info&cPath=107&products_id=234
> 
> On auction sites you may also see 10 MHz GPSDO by BG7TBL from China at 
> reasonable prices, along with matching distribution amplifiers. 
> 
> 
> 
> 73
> 
> David Anderson GM4JJJ 
> 
>> On 31 Oct 2015, at 12:40, Joel Black  wrote:
>> 
>> I may be in need of providing a 10 MHz reference clock to my K3. I know I’d 
>> need to purchase the K3EXREF board for this. Without having to cobble 
>> together (I’m not a good “cobbler” of shoes or stuff) too much unless it 
>> comes in a kit, what are folks using that could be had for relatively low 
>> cost?
>> 
>> Although this would be nice to have, 
>> http://www.jrmiller.demon.co.uk/projects/ministd/frqstd.htm 
>> , something 
>> significantly less would be better. At the current exchange rate, this 
>> device is close to $500.
>> 
>> Thanks,
>> Joel - W4JBB
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to gm4...@yahoo.co.uk
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to gm4...@yahoo.co.uk
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] Has anyone Interfaced a K3S and OM2500A

[Josh Fiden]

1. Does anyone out there have a K3S successfully interfaced to a 
OM2500A amp using the RS232 post on the K3S?

I'm using OM-Power amp with K3 (not "S").


2.  Since the K3S has up/down buttons for band changes, does the 
OM2500A reposition the load and tune stepper motors for each band on 
the way to the intended band.  In other words, on a rapid band change 
from 80m to 10m, would the OM2500A reposition the tune and load 
stepper motors for 40M then 30M, then 20M, then 17M, then 15M, then 
12M, before repositioning the stepper motors for 10 meters?
The amplifier does NOT re-tune for band changes until you tap the key or 
PTT.


You must connect the TX inhibit line between K3 and amplifier. When you 
change bands on K3, OM Power asserts the TX inhibit line to prevent K3 
from transmitting. Once you tap PTT/VOX/key, the amp tunes and releases 
TX inhibit.


73,
Josh W6XU

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

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

Re: [Elecraft] The Technical Side of Ham Radio

[Wes (N7WS)]

I should have added, read the manual too, especially sections 2.2 and 2.3:

http://signalhound.com/sigdownloads/SA44B/SA44B-User-Manual.pdf

This thing has some major limitations that turned me off.

On 10/30/2015 7:56 PM, Wes (N7WS) wrote:

Before springing for this I would suggest reading the RSGB review.


On 10/30/2015 1:59 PM, Jim Brown wrote:

On Fri,10/30/2015 1:13 PM, Alan wrote:
I have a "Signal Hound" USB-SA-44B, which is a 1 Hz to 4.4 GHz spectrum 
analyzer that uses a PC for power and the user interface.  It currently goes 
for $919.  I've been pretty happy with it.


https://signalhound.com/

They also offer an optional USB-TG44A tracking generator for $599, which I 
don't have.


Interesting. What's the dynamic range -- i.e., how much can you display 
on-screen?


73, Jim K9YC




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

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

Re: [Elecraft] The Technical Side of Ham Radio

[Lynn W. Taylor, WB6UUT]

I'll admit that I passed the Extra test by memorizing the questions and 
answers.


The reason: the answers in the wild and the answers on the test did not 
always match.


Since I learned a lot of what was in the real world before going for my 
Extra, it was a problem.


73 -- Lynn

On 10/31/2015 12:33 AM, Ian White wrote:

The questions might be on the test, but the ANSWERS are wild in the
>world, you know?
>
>Cortland
>KA5S

Thanks - that's a great quote.

73 from Ian GM3SEK


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

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

Re: [Elecraft] The Technical Side of Ham Radio

[Alan]

On 10/31/2015 09:32 AM, Wes (N7WS) wrote:

I should have added, read the manual too, especially sections 2.2 and 2.3:

http://signalhound.com/sigdownloads/SA44B/SA44B-User-Manual.pdf

This thing has some major limitations that turned me off.


The limitations are due to the fact that it uses software algorithms 
rather than hardware for image rejection.  Basically it takes two 
measurements with different local oscillator frequencies and figures out 
which spectral components are real and which are images.  It works quite 
well.  Other than slowing down the sweep speed somewhat (for span > 200 
kHz), I have never noticed any effects in normal operation.


The main effect is it doesn't work correctly on transient signals, like 
pulse-modulated or swept.  If you need to measure one of those you can 
always turn off image rejection, at the risk of seeing spurious responses.


Also it can't be used for wideband signals greater than 42 MHz.  Maximum 
resolution bandwidth is 250 kHz, so you can't demodulate an analog TV 
signal (although you can display the spectrum).


But for the types of measurements typically needed for ham radio it acts 
just like a conventional spectrum analyzer.  I doubt you'd ever notice 
the difference.


Alan N1AL




On 10/30/2015 7:56 PM, Wes (N7WS) wrote:

Before springing for this I would suggest reading the RSGB review.


On 10/30/2015 1:59 PM, Jim Brown wrote:

On Fri,10/30/2015 1:13 PM, Alan wrote:

I have a "Signal Hound" USB-SA-44B, which is a 1 Hz to 4.4 GHz
spectrum analyzer that uses a PC for power and the user interface.
It currently goes for $919.  I've been pretty happy with it.

https://signalhound.com/

They also offer an optional USB-TG44A tracking generator for $599,
which I don't have.


Interesting. What's the dynamic range -- i.e., how much can you
display on-screen?

73, Jim K9YC



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

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

Re: [Elecraft] 10 MHz Reference Oscillator

[Edward R Cole]

Back in the 1950's all radios drifted a lot at cold start...that is 
why many let their receivers run continuously.


OCXO = Oven Controlled Xtal Oscillator.  I utilizes an insulated 
enclosure heated above the ambient temperature to provide a very 
stable operating temperature for the xtal oscillator.  Thus they need 
to be at stable operating temp to provide very stable "short-term" 
10-MHz reference signal.  30-40 minutes from cold start is about 
right.  I just run mine 24/7.  Originally I used a RS 1.5A wall cube 
charging a large gell-cell battery for 12v power but after 
discovering bad 120-Hz ripple on the voltage am just using a good 12v 
PS made by Astron.  Short term frequency stability is +/-5 E-12 or in 
non-scientific nomenclature +/- 0.05 Hz.  The long-term stability 
is +/-5 E-5 which is about +/- 5Hz so one must periodically adjust 
(or recalibrate) the OCXO with an accurate frequency.  I find mine 
drifts about 1-Hz over 6-month.


The K3EXREF keeps the K3 with TCXO-3 to about 2 to 3 Hz at 28-MHz 
using a OCXO as reference.  Plenty good enough for just about anyone.


I also use a surplus "Russian" Morion OCXO bought for $45 from 
e-bay.  Recently they are available for much less with double-oven 
design or sine wave versions.  I bought a couple sine-wave OCXO for 
$25 in the last year.


They do require a 5v regulator and multi-turn 100K pot plus a couple 
capacitors and fixed resistors for the frequency control lead of the 
OCXO (about $30 of parts).  I mount my OCXO on a small RS project pc 
board.  Yes it requires some assembly with soldering iron (but no sm 
stuff).  I have a Rubidium reference for calibrating my OCXO...It 
also requires a long warm up.


So if you travel with your K3 a lot then probably a GPSDO is a better 
choice though one also requires them to have a good lock on GPS which 
can take a minute or so for some.


73, Ed - KL7uW
I was a beta-tester on the K3EXREF



From: brian 
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] 10 MHz Reference Oscillator
Message-ID: <5634d307.7070...@nc.rr.com>
Content-Type: text/plain; charset=windows-1252; format=flowed

Ron,

The MV89A is pretty incredible-- especially for the price.

I think two statements in your posting contradict each other though.
It isn't basically "on frequency" from a cold start.   It drifts 10's of
Hz until the oven temp and oscillator stabilizes.
The second statement about taking 40 minutes is more accurate.

Upon receipt of mine, there was some calibration needed to have it
accurate < 1 Hz.

After calibration and warmups of 2 hours to days, the residual drift was
incredibly low <0.003 Hz/day!

For those who can live with it being powered continuously, it is an
excellent unit to discipline the K3.

73 DE Brian/K3KO




73, Ed - KL7UW
http://www.kl7uw.com
"Kits made by KL7UW"
Dubus Mag business:
dubus...@gmail.com

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

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

Re: [Elecraft] 10 MHz Reference Oscillator

[Mel Farrer via Elecraft]

Hi,
I use a Trimble GPS referenced 10 MHz source for shop use and into a video 
distribution amplifier and cable it from the shop to the K3. 

Works great. always on for the test equipment in the shop.
Mel, K6KBE

  From: Edward R Cole 
 To: Elecraft@mailman.qth.net 
 Sent: Saturday, October 31, 2015 10:01 AM
 Subject: Re: [Elecraft] 10 MHz Reference Oscillator
   
Back in the 1950's all radios drifted a lot at cold start...that is 
why many let their receivers run continuously.

OCXO = Oven Controlled Xtal Oscillator.  I utilizes an insulated 
enclosure heated above the ambient temperature to provide a very 
stable operating temperature for the xtal oscillator.  Thus they need 
to be at stable operating temp to provide very stable "short-term" 
10-MHz reference signal.  30-40 minutes from cold start is about 
right.  I just run mine 24/7.  Originally I used a RS 1.5A wall cube 
charging a large gell-cell battery for 12v power but after 
discovering bad 120-Hz ripple on the voltage am just using a good 12v 
PS made by Astron.  Short term frequency stability is +/-5 E-12 or in 
non-scientific nomenclature +/- 0.05 Hz.  The long-term stability 
is +/-5 E-5 which is about +/- 5Hz so one must periodically adjust 
(or recalibrate) the OCXO with an accurate frequency.  I find mine 
drifts about 1-Hz over 6-month.

The K3EXREF keeps the K3 with TCXO-3 to about 2 to 3 Hz at 28-MHz 
using a OCXO as reference.  Plenty good enough for just about anyone.

I also use a surplus "Russian" Morion OCXO bought for $45 from 
e-bay.  Recently they are available for much less with double-oven 
design or sine wave versions.  I bought a couple sine-wave OCXO for 
$25 in the last year.

They do require a 5v regulator and multi-turn 100K pot plus a couple 
capacitors and fixed resistors for the frequency control lead of the 
OCXO (about $30 of parts).  I mount my OCXO on a small RS project pc 
board.  Yes it requires some assembly with soldering iron (but no sm 
stuff).  I have a Rubidium reference for calibrating my OCXO...It 
also requires a long warm up.

So if you travel with your K3 a lot then probably a GPSDO is a better 
choice though one also requires them to have a good lock on GPS which 
can take a minute or so for some.

73, Ed - KL7uW
I was a beta-tester on the K3EXREF



From: brian 
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] 10 MHz Reference Oscillator
Message-ID: <5634d307.7070...@nc.rr.com>
Content-Type: text/plain; charset=windows-1252; format=flowed

Ron,

The MV89A is pretty incredible-- especially for the price.

I think two statements in your posting contradict each other though.
It isn't basically "on frequency" from a cold start.  It drifts 10's of
Hz until the oven temp and oscillator stabilizes.
The second statement about taking 40 minutes is more accurate.

Upon receipt of mine, there was some calibration needed to have it
accurate < 1 Hz.

After calibration and warmups of 2 hours to days, the residual drift was
incredibly low <0.003 Hz/day!

For those who can live with it being powered continuously, it is an
excellent unit to discipline the K3.

73 DE Brian/K3KO




73, Ed - KL7UW
http://www.kl7uw.com
    "Kits made by KL7UW"
Dubus Mag business:
    dubus...@gmail.com

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

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


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

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

Re: [Elecraft] The Technical Side of Ham Radio

[Wes (N7WS)]

On 10/31/2015 9:56 AM, Alan wrote:

 I doubt you'd ever notice the difference.

Alan N1AL


Really?  And you know this how?
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] Aviation Headset and the KX3

[Jack Spitznagel]

George,

Thanks for posting this suggestion. It took a while for me to get a 
"rountuit" and order one of these. I found it for slightly less from 
Aircraft Spruce. I am using the PA-96 adapter with a Sennheiser S1 noise 
cancelling headset that works beautifully for me by assisting my failing 
ears. I probably need to shape the transmit audio a bit, but have had no 
complaints yet.


Jack - KD4IZ

On 9/4/2015 23:55, George Cortez via Elecraft wrote:

Hi GangI love using a Heil headset with the KX3 but wanted to try something 
with a little more build quality.I have my old Bose X Aviation headset from my 
flying days and set them up for the General Aviation plugs. They are really 
comfortable well made and have active noise canceling built in. I have used 
computer headsets with the K3 and the KX3 in the past and they have worked 
fine.I tried this adapter from 
sportys.comhttps://www.sportys.com/pilotshop/general-aviation-twin-plugs-to-pc-headset-adapter.html?___SID=U
It works fine with the KX3 and I get good audio reports. Just remember to 
unplug it after use as the plugs are the power switch for the adapter. Its a 
lot of cable but the adapter is solidly built and looks like it would last a 
good long time. You need to turn on the bias in the KX3 for any pc headset to 
work. Im sure David Clark GA headsets would work as well but I haven't tried 
them yet. Im tired of the old Head clamps anyway.
George NE2I

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

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


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

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

Re: [Elecraft] kpa500 doesnt follow k3

[NE9U - Jasper]

Thanks Jackthe change in KIO3 menu item fixed the problem of my kpa500 and 
kat500 not following the k3.   It was set to trn instead of nor.

ive had two or three guys email me off reflector with same problemmaybe 
this is also why their band switching isnt working.

Thanks and 73

Scott  NE9U



Sent from Republic Wireless Cray-1

> On Oct 31, 2015, at 2:45 AM, Jack Brindle  wrote:
> 
> The KAT500 should also band switch automatically when the K3 changes band. 
> The KAT500 has additional support in the K3, though. It can follow the K3’s 
> frequency and switch to the LC nomination needed for the antenna at that 
> frequency. Go into the K3’s menu, KAT3 setting, and tap the 1 button on the 
> K3 keypad. KAT500Y should flash on the VFOB display to tell you this is 
> enabled. The procedure is described on page 60 of the current K3S manual. 
> Note that the current K3/K3S firmware supports this setting, but it is not 
> described in the K3 manual on the web site, but is described in the K3S 
> manual there. Yes, the K3S and K3 firmware are the same, so we K3 owners get 
> the new features, assuming our radios support them.
> 
> K3 serial 1732 should have proper support for changing the band lines. Very 
> early K3s did not have pull-ups on their BAND lines (actually not needed by 
> the KPA500). Your should have them. The next check is again in the Config 
> menu, turn the VFOA nob to get to the KIO3 setting, then make sure it is set 
> to NOR and not TRN or HF-TRN.
> 
> If that didn’t solve it, and you are comfortable with use a voltmeter to 
> check the BAND lines, then do so. The pinout is described on page 18 of the 
> manual.
> 
> I’ll be around all weekend if you need more help, so don’t hesitate to email 
> me. 
> 
> Jack, W6FB
> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> 
>> Sent from Republic Wireless Cray-1
>> 
>>> On Oct 31, 2015, at 1:41 AM, Jack Brindle  wrote:
>>> 
>>> Did you build this from a kit or purchase it built?
>>> Is there anything else that seems off?
>>> Does the KAT500 change bands when the K3 changes bands?
>>> 
>>> When RADIO=K3, the KPA observes the band lines from the K3 to determine the 
>>> band it should be on. When it sees the band lines change, it will change 
>>> bands.
>>> When it senses RF it does a double-check, and will switch bands again if 
>>> the mefrequency-counted RF does not agree with what the band lines indicate.
>>> 
>>> So at this point we need to determine that the K3 BAND signals are indeed 
>>> switching, and if the cables inside the KP500 are properly seated. This 
>>> would be the cable on the far left when viewing the KPA from the front. If 
>>> it is off, either at the front panel or at the IO board, you might see this 
>>> sort of problem. But I would expect you to see other problems as well.
>>> 
>>> The answers to these questions should provide some light.
>>> 
>>> - Jack, W6FB
>>> 
 On Oct 30, 2015, at 10:44 PM, NE9U - Jasper  wrote:
 
 yes, the k3 recognizes when the kpa500 is turned on.
 
 the cables are e850463.  ( i also have a new kat500i get same result 
 whether i have it or out of line)
 
 radio setting in kpa500 is set to k3
 
 i also updated all firmware yesterday thinking that might helpno 
 change.
 
 scott
 
 
 
 
 Sent from Republic Wireless Cray-1
 
> On Oct 31, 2015, at 12:28 AM, Jack Brindle  wrote:
> 
> Let’s make sure the K3 and KPA are communicating. When you power on the 
> KPA, does the K3 indicate that something changed? It should display
> the KPA power event on the display. If not:
> * what cable are you using between the K3 and the KPA?
> * Check the RADIO setting in the KPA. It should be set to K3.
> 
> Is there anything else connected to the AUX IO ports on either the K3 or 
> KPA?
> 
> - Jack Brindle, W6FB
> Elecraft Engineering
> 
>> 
>> On Oct 30, 2015, at 10:23 PM, NE9U - Jasper  wrote:
>> 
>> Just hooked  a new kpa500 to a k3.  
>> 
>> when switching bands on the k3, the kpa500 doesnt follow.  it does 
>> follow when i apply power.
>> 
>> the reverse does workif i switch bands on the kpa500, the k3 follows.
>> 
>> tried 2 different auxillary cables...same result with both.
>> 
>> am i missing some setting i need to change?  
>> 
>> scott  ne9u
>> 
>> 
>> Sent from Republic Wireless Cray-1
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>> 
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>> Message delivered to jackbrin...@me.com
> 
__
Elecraft mailing list
Home: ht

Re: [Elecraft] 10 MHz Reference Oscillator

[Bob W7AVK]

For evaluation I purchased last spring directly from China one of the 
BG7TBL 10 mhz sine output GPS Defined Oscillators when the price was 
$125.  These very nice units are now being sold from CA for a bit more 
and comes with everything needed, Unit, GPS antenna, power supply. 
http://www.ebay.com/itm/10MHZ-Output-Sine-Wave-GPS-Disciplined-Clock-GPSDO-GPS-Antenna-Power-Supply-US-/261977676713?hash=item3cff161ba9:g:ZJQAAOSwrklVf3wV 



It uses the Russian Morion Double oven crystal oscillators controlled by 
voltage feedback against the  GPS1 pulse per second signal using a very 
long time constant control loop.  If you would like a block drawing 
contact me directly.


I gave the unit to KE5FX, a member of the "Time Nuts" group, who has the 
equipment to evaluate it.  His results are posted at 
http://www.ke5fx.com/gpscomp.htm It was found due to the pulse width 
method of creating the Morion oscillator control voltage this unit was 
operating 2 to 3 times ten to the minus 11 cycles low.   I wouldn't get 
too upset at this as that error would only be 3 hz off at 100 GHZ.


Found the unit works great as a master reference for not only the K3 but 
lab gear like counters and signal generators.


73  Bob  W7AVK
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

[Elecraft] KX3/PX3/KXPA100 USB control harness noise

[Jack Spitznagel]

I am seeing see about a 1 S-unit jump in this noise above the floor in 
quiet band conditions when I use rig control (any program) on a Dell 
laptop. Rig power supply is quiet.


Before I spend a lot of time reinventing things... and trying to figure 
out how to search the archives for something this specific:


Is there someone who has used ferrites to kill hash noise that only 
occurs with this combination of rig, panadapter, and amp setup when the 
Elecraft Utilities or a rig control program is running?


If so what type of ferrite(s) did you use and where did you place them?

Observation: I can knock the noise down by half by putting a "medium 
sized" clip over ferrite (sorry, it says TEAC on it... no model number) 
right at the box on the KXPA100 to KX3 adapter cable.


That may be the best I can do - if so thanks for reading this and not 
telling me to search the archive...


Jack - KD4IZ



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

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

Re: [Elecraft] Has anyone Interfaced a K3S and OM2500A

[Mike K2MK]

Hi Charles,

Not a direct answer to your specific amplifier question but something that
might help.

In the last 7 years I don't think I have used the BAND up/down button on my
K3 more than once or perhaps twice. The numbered keypad is easily set up for
each band either directly on the K3 or K3S or by using the K3 Memory Editor
program. Changing bands is then a simple two button process. First press the
M-V button then press one of the ten numbered key buttons. I have button 1
set for 160 meters, 2 for 80 meters... 0 for 6 meters.

In a similar manner you can then set up each of the four M buttons for band
segments. For example I have M1 set up for the CW portion of the band, M2
for RTTY, M3 for SSB. Again just press M-V then the M button.

And finally, when using a contest or logging program it's very easy to just
type in a frequency on your PC and press enter.

73,
Mike K2MK



charles-2 wrote
> Having no success getting my Flex 6500 to interface with my OM2500A 
> using ddutil and assorted null modems and serial to USB adapters.  Think 
> of purchasing a K3S since it has a RS232 port that can interface 
> directly to the OM2500A without the computer/USB adapter/ddutil stuff.  
> Before making the jump, there are some questions I have about about the 
> K3S/OM2500A combination:
> 
> 1. Does anyone out there have a K3S successfully interfaced to a OM2500A 
> amp using the RS232 post on the K3S?
> 
> 2.  Since the K3S has up/down buttons for band changes, does the OM2500A 
> reposition the load and tune stepper motors for each band on the way to 
> the intended band.  In other words, on a rapid band change from 80m to 
> 10m, would the OM2500A reposition the tune and load stepper motors for 
> 40M then 30M, then 20M, then 17M, then 15M, then 12M, before 
> repositioning the stepper motors for 10 meters?
> 
> 3.  If the OM2500A does have to reposition the stepper motors for every 
> band on the way to the intended band, is there some workaround using the 
> K3S memories to go directly to the desired band without stepping through 
> every band on the way to the desired band?
> 
> Thanks for the helkp,
> 
> Charles  K5UA





--
View this message in context: 
http://elecraft.365791.n2.nabble.com/Has-anyone-Interfaced-a-K3S-and-OM2500A-tp7609813p7609829.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

[Elecraft] K3 has no output Help!

[averill]

My K3 has stopped putting out a CW signal!
Red transmit light comes on.No reading on SWR meter.Rcv. is working fine.VOX is 
turned on.Antennas are OK.
HELP!  Any suggestions?
Randy KK4BNC

Sent from my Verizon 4G LTE Smartphone


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

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

[Elecraft] [K3/S] 500 Hz Roofing Filter

[Don Putnick via Elecraft]

For sale: KFL3A-500  500 Hz, 5-pole cw/data filter $50Price includes USPS 
Priority Mail shipping to USA.Certified check or USPS money order.Please 
contact me off list: Don dot NA6Z at yahoo dot com73 Don NA6Z 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] Has anyone Interfaced a K3S and OM2500A

[George K5KG via Elecraft]

I do 99% of my K3 band switching with the buttons on the KPA-500, even 
if I am not even using the amp, but just have it turned on.  It is a 
very expensive, effortless band switch!


73, George, K5KG

On 10/31/2015 2:45 PM, Mike K2MK wrote:

Hi Charles,

Not a direct answer to your specific amplifier question but something that
might help.

In the last 7 years I don't think I have used the BAND up/down button on my
K3 more than once or perhaps twice. The numbered keypad is easily set up for
each band either directly on the K3 or K3S or by using the K3 Memory Editor
program. Changing bands is then a simple two button process. First press the
M-V button then press one of the ten numbered key buttons. I have button 1
set for 160 meters, 2 for 80 meters... 0 for 6 meters.

In a similar manner you can then set up each of the four M buttons for band
segments. For example I have M1 set up for the CW portion of the band, M2
for RTTY, M3 for SSB. Again just press M-V then the M button.

And finally, when using a contest or logging program it's very easy to just
type in a frequency on your PC and press enter.

73,
Mike K2MK



charles-2 wrote

Having no success getting my Flex 6500 to interface with my OM2500A
using ddutil and assorted null modems and serial to USB adapters.  Think
of purchasing a K3S since it has a RS232 port that can interface
directly to the OM2500A without the computer/USB adapter/ddutil stuff.
Before making the jump, there are some questions I have about about the
K3S/OM2500A combination:

1. Does anyone out there have a K3S successfully interfaced to a OM2500A
amp using the RS232 post on the K3S?

2.  Since the K3S has up/down buttons for band changes, does the OM2500A
reposition the load and tune stepper motors for each band on the way to
the intended band.  In other words, on a rapid band change from 80m to
10m, would the OM2500A reposition the tune and load stepper motors for
40M then 30M, then 20M, then 17M, then 15M, then 12M, before
repositioning the stepper motors for 10 meters?

3.  If the OM2500A does have to reposition the stepper motors for every
band on the way to the intended band, is there some workaround using the
K3S memories to go directly to the desired band without stepping through
every band on the way to the desired band?

Thanks for the helkp,

Charles  K5UA





--
View this message in context: 
http://elecraft.365791.n2.nabble.com/Has-anyone-Interfaced-a-K3S-and-OM2500A-tp7609813p7609829.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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


--
George Wagner, K5KG
Sarasota, FL
941-400-1960

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

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

Re: [Elecraft] K3 has no output Help!

[Bob McGraw - K4TAX]

Check to see that the PWR value is something other than Zero.

73
Bob, K4TAX
K3S - s/n 10163

On 10/31/2015 1:46 PM, aver...@mchsi.com wrote:

My K3 has stopped putting out a CW signal!
Red transmit light comes on.No reading on SWR meter.Rcv. is working fine.VOX is 
turned on.Antennas are OK.
HELP!  Any suggestions?
Randy KK4BNC



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

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

Re: [Elecraft] 10 MHz Reference Oscillator

[David Anderson]

Yes, I bought one as well, along with the matching  8 channel distribution 
amplifier which is equally well made.

There is a review by VK2XAX Tim Tuck of a later model which may have fixed that 
tiny error in phase. 

I also read an interesting article about the 5MHz leakage from the Morion 
Oscillator ( at -50dBc). [The Morion is really a 5MHz OS X with a frequency 
doubler to 10 MHz] and yes, I do know what a double oven is and we are not 
referring to that type of double.

I hope the following link works for Tim's review of the GPDSO

https://drive.google.com/file/d/0B9Oysj7clpT7YTBWSjlfNTI1aTQ/view

73

David Anderson GM4JJJ 

> On 31 Oct 2015, at 18:40, Bob W7AVK  wrote:
> 
> For evaluation I purchased last spring directly from China one of the BG7TBL 
> 10 mhz sine output GPS Defined Oscillators when the price was $125.  These 
> very nice units are now being sold from CA for a bit more and comes with 
> everything needed, Unit, GPS antenna, power supply. 
> http://www.ebay.com/itm/10MHZ-Output-Sine-Wave-GPS-Disciplined-Clock-GPSDO-GPS-Antenna-Power-Supply-US-/261977676713?hash=item3cff161ba9:g:ZJQAAOSwrklVf3wV
>  
> 
> It uses the Russian Morion Double oven crystal oscillators controlled by 
> voltage feedback against the  GPS1 pulse per second signal using a very long 
> time constant control loop.  If you would like a block drawing contact me 
> directly.
> 
> I gave the unit to KE5FX, a member of the "Time Nuts" group, who has the 
> equipment to evaluate it.  His results are posted at 
> http://www.ke5fx.com/gpscomp.htm It was found due to the pulse width method 
> of creating the Morion oscillator control voltage this unit was operating 2 
> to 3 times ten to the minus 11 cycles low.   I wouldn't get too upset at this 
> as that error would only be 3 hz off at 100 GHZ.
> 
> Found the unit works great as a master reference for not only the K3 but lab 
> gear like counters and signal generators.
> 
> 73  Bob  W7AVK
> k
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] 10 MHz Reference Oscillator

[Mel Farrer via Elecraft]

I agree, and when you put the GPS referenced osc against my HP8920 and the old 
HP 5346M on X-Y scope input, the circle hardly moves.
Mel, K6KBE

  From: Bob W7AVK 
 To: 'Elecraft'  
 Sent: Saturday, October 31, 2015 11:40 AM
 Subject: Re: [Elecraft] 10 MHz Reference Oscillator
   
For evaluation I purchased last spring directly from China one of the 
BG7TBL 10 mhz sine output GPS Defined Oscillators when the price was 
$125.  These very nice units are now being sold from CA for a bit more 
and comes with everything needed, Unit, GPS antenna, power supply. 
http://www.ebay.com/itm/10MHZ-Output-Sine-Wave-GPS-Disciplined-Clock-GPSDO-GPS-Antenna-Power-Supply-US-/261977676713?hash=item3cff161ba9:g:ZJQAAOSwrklVf3wV
 


It uses the Russian Morion Double oven crystal oscillators controlled by 
voltage feedback against the  GPS1 pulse per second signal using a very 
long time constant control loop.  If you would like a block drawing 
contact me directly.

I gave the unit to KE5FX, a member of the "Time Nuts" group, who has the 
equipment to evaluate it.  His results are posted at 
http://www.ke5fx.com/gpscomp.htm It was found due to the pulse width 
method of creating the Morion oscillator control voltage this unit was 
operating 2 to 3 times ten to the minus 11 cycles low.  I wouldn't get 
too upset at this as that error would only be 3 hz off at 100 GHZ.

Found the unit works great as a master reference for not only the K3 but 
lab gear like counters and signal generators.

73  Bob  W7AVK
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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


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

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

Re: [Elecraft] K3 has no output Help!

[GRANT YOUNGMAN]

TEST mode??



Grant NQ5T
K3 #2091, KX3 #8342




> On Oct 31, 2015, at 2:04 PM, Bob McGraw - K4TAX  wrote:
> 
> Check to see that the PWR value is something other than Zero.
> 
> 73
> Bob, K4TAX
> K3S - s/n 10163
> 
> On 10/31/2015 1:46 PM, aver...@mchsi.com wrote:
>> My K3 has stopped putting out a CW signal!
>> Red transmit light comes on.No reading on SWR meter.Rcv. is working fine.VOX 
>> is turned on.Antennas are OK.
>> HELP!  Any suggestions?
>> Randy KK4BNC
> 

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

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

Re: [Elecraft] [K3/S] 500 Hz Roofing Filter

[Byron Peebles]

Check you are on the correct antenna.

On 10/31/2015 02:49 PM, Don Putnick via Elecraft wrote:

For sale:Â KFL3A-500 Â 500 Hz, 5-pole cw/data filter $50Price includes USPS 
Priority Mail shipping to USA.Certified check or USPS money order.Please 
contact me off list: Don dot NA6Z at yahoo dot com73 Don NA6ZÂ
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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


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

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

Re: [Elecraft] KX3/PX3/KXPA100 USB control harness noise

[David Anderson]

Jack,

Are you using the Elecraft USB adaptor lead? I ask because initially I was 
intending to use a built in USB to serial COM port in my Digimaster Pro 
interface box for CAT with my KX3, but got terrible noise from its polling. 

Moving to using the Elecraft USB adaptor instead cured that. As a reference 
point I only have the Laptop USB connected to a PX3 and from there to the KX3 
and am using only 144 MHz with an external transverter from 14 MHz.  I didn't 
need any ferrite on that port. I did need some on other USB leads and HDMI 
leads however. 


73

David Anderson GM4JJJ 

> On 31 Oct 2015, at 18:44, Jack Spitznagel  wrote:
> 
> I am seeing see about a 1 S-unit jump in this noise above the floor in quiet 
> band conditions when I use rig control (any program) on a Dell laptop. Rig 
> power supply is quiet.
> 
> Before I spend a lot of time reinventing things... and trying to figure out 
> how to search the archives for something this specific:
> 
> Is there someone who has used ferrites to kill hash noise that only occurs 
> with this combination of rig, panadapter, and amp setup when the Elecraft 
> Utilities or a rig control program is running?
> 
> If so what type of ferrite(s) did you use and where did you place them?
> 
> Observation: I can knock the noise down by half by putting a "medium sized" 
> clip over ferrite (sorry, it says TEAC on it... no model number) right at the 
> box on the KXPA100 to KX3 adapter cable.
> 
> That may be the best I can do - if so thanks for reading this and not telling 
> me to search the archive...
> 
> Jack - KD4IZ
> 
> 
> 
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
> 
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to gm4...@yahoo.co.uk
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] K3 has no output Help!

[Vic Rosenthal 4X6GP/K2VCO]

Check TX INH in the CONFIG menu. It should be OFF unless you are using 
that feature.


No, it's not TEST mode, because the TX light is on.

73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/

On 31 Oct 2015 20:46, aver...@mchsi.com wrote:








My K3 has stopped putting out a CW signal!
Red transmit light comes on.No reading on SWR meter.Rcv. is working fine.VOX is 
turned on.Antennas are OK.
HELP!  Any suggestions?
Randy KK4BNC

Sent from my Verizon 4G LTE Smartphone

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

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

Re: [Elecraft] 10 MHz Reference Oscillator

[Robert Friess]

Where do I find the distribution amplifier?

Bob

On Sat, Oct 31, 2015 at 12:19 PM, Mel Farrer via Elecraft <
elecraft@mailman.qth.net> wrote:

> I agree, and when you put the GPS referenced osc against my HP8920 and the
> old HP 5346M on X-Y scope input, the circle hardly moves.
> Mel, K6KBE
>
>   From: Bob W7AVK 
>  To: 'Elecraft' 
>  Sent: Saturday, October 31, 2015 11:40 AM
>  Subject: Re: [Elecraft] 10 MHz Reference Oscillator
>
> For evaluation I purchased last spring directly from China one of the
> BG7TBL 10 mhz sine output GPS Defined Oscillators when the price was
> $125.  These very nice units are now being sold from CA for a bit more
> and comes with everything needed, Unit, GPS antenna, power supply.
>
> http://www.ebay.com/itm/10MHZ-Output-Sine-Wave-GPS-Disciplined-Clock-GPSDO-GPS-Antenna-Power-Supply-US-/261977676713?hash=item3cff161ba9:g:ZJQAAOSwrklVf3wV
>
>
> It uses the Russian Morion Double oven crystal oscillators controlled by
> voltage feedback against the  GPS1 pulse per second signal using a very
> long time constant control loop.  If you would like a block drawing
> contact me directly.
>
> I gave the unit to KE5FX, a member of the "Time Nuts" group, who has the
> equipment to evaluate it.  His results are posted at
> http://www.ke5fx.com/gpscomp.htm It was found due to the pulse width
> method of creating the Morion oscillator control voltage this unit was
> operating 2 to 3 times ten to the minus 11 cycles low.  I wouldn't get
> too upset at this as that error would only be 3 hz off at 100 GHZ.
>
> Found the unit works great as a master reference for not only the K3 but
> lab gear like counters and signal generators.
>
> 73  Bob  W7AVK
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to farrerfo...@yahoo.com
>
>
>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
> Message delivered to rfri...@usa.net
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

[Elecraft] Elecraft] P3 SVGA Self changing tracking mode

[Richard Schmiedt]

Re the SVGA off center bug. My fix is to put the fixed/tune menu control on a 
function button. Just hit the button after using the center control to reset 
the SVGA back to default. 

Rick
W4GE


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

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

Re: [Elecraft] The Technical Side of Ham Radio

[Phil Kane]

On 10/30/2015 9:48 PM, CR wrote:

> The questions might be on the test, but the ANSWERS are wild in the
> world, you know?

The answers are right there on the paper in front of you.  All you
really have to know is "a", "b", "c", and "d".  Just like any other
multiple-guess exam... :)

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

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

[Elecraft] KPA500 w/ KX3 & K3 & w/ KAT500

[Jim Hooper]

I have configured my K3 and KX3 as shown in “The Elecraft KX3 - Portable: Going 
for the Summit” book that Fred wrote, the 2013 version.I have configured 
cabling as shown in section "9.8 The KX3 and the KPA500”, figure 9.17, which 
shows use of the Keyline Interrupter, RCA cables, E980232 Adapter for the KX3, 
et al, with an RF switch between the K3 and KX3 in order to input either to the 
KAT500/KPA500 pair.   

How do I put the KPA500 into OPER when I have powered off the K3 and switched 
the my KX3?   

Currently, when I turn off the K3, the KPA500 always switches to STBY and I can 
not then switch the KPA500 from STBY back to OPER.I am thinking that there 
might be a setting somewhere? 

Thanks, 
73, 
Hoop
K9QJS 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] 10 MHz Reference Oscillator

[Mel Farrer via Elecraft]

Hi Bob,
Old DYNAIR DA1510A one by four output.  Still see them listed for sale <$50.
Mel, K6KBE

  From: Robert Friess 
 To: Mel Farrer  
Cc: Bob W7AVK ; Elecraft  
 Sent: Saturday, October 31, 2015 1:08 PM
 Subject: Re: [Elecraft] 10 MHz Reference Oscillator
   
Where do I find the distribution amplifier?
Bob


On Sat, Oct 31, 2015 at 12:19 PM, Mel Farrer via Elecraft 
 wrote:

I agree, and when you put the GPS referenced osc against my HP8920 and the old 
HP 5346M on X-Y scope input, the circle hardly moves.
Mel, K6KBE

      From: Bob W7AVK 
 To: 'Elecraft' 
 Sent: Saturday, October 31, 2015 11:40 AM
 Subject: Re: [Elecraft] 10 MHz Reference Oscillator

For evaluation I purchased last spring directly from China one of the
BG7TBL 10 mhz sine output GPS Defined Oscillators when the price was
$125.  These very nice units are now being sold from CA for a bit more
and comes with everything needed, Unit, GPS antenna, power supply.
http://www.ebay.com/itm/10MHZ-Output-Sine-Wave-GPS-Disciplined-Clock-GPSDO-GPS-Antenna-Power-Supply-US-/261977676713?hash=item3cff161ba9:g:ZJQAAOSwrklVf3wV


It uses the Russian Morion Double oven crystal oscillators controlled by
voltage feedback against the  GPS1 pulse per second signal using a very
long time constant control loop.  If you would like a block drawing
contact me directly.

I gave the unit to KE5FX, a member of the "Time Nuts" group, who has the
equipment to evaluate it.  His results are posted at
http://www.ke5fx.com/gpscomp.htm It was found due to the pulse width
method of creating the Morion oscillator control voltage this unit was
operating 2 to 3 times ten to the minus 11 cycles low.  I wouldn't get
too upset at this as that error would only be 3 hz off at 100 GHZ.

Found the unit works great as a master reference for not only the K3 but
lab gear like counters and signal generators.

73  Bob  W7AVK
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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



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

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



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

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

Re: [Elecraft] 10 MHz Reference Oscillator

[David Anderson]

They are on eBay too, sometimes there are bargains the GPSDO and the 
Distribution amp as a bundle. Search for 10 MHz distribution amplifier. Also 
look for BG7TBL the designer.

This is the distribution amp I got in the bundle I bought:

http://www.ebay.com/itm/OXCO-benchmark-frequency-standard-8-port-output-10MHz-Distribution-amplifier-/181744186662?hash=item2a50cc3526:g:gqYAAOSwNSxVUw~z

Note the distribution amp also includes another free running 10 MHz Morion Oven 
Osc as well. It takes over if the Reference input is removed.

73

David Anderson GM4JJJ 

> On 31 Oct 2015, at 20:08, Robert Friess  wrote:
> 
> Where do I find the distribution amplifier?
> 
> Bob
> 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] KPA500 w/ KX3 & K3 & w/ KAT500

[Don Wilhelm]

Hoop,

I do not have that Fred Cady book, but I would think that is intended 
only to switch between the K3 and the KX3 when both the K3 and KX3 are 
powered on.


If you want to operate the KX3 with the K3 powered off, you can remove 
the cable from the K3 ACC connector.


73,
Don W3FPR

On 10/31/2015 4:53 PM, Jim Hooper wrote:

I have configured my K3 and KX3 as shown in “The Elecraft KX3 - Portable: Going for 
the Summit” book that Fred wrote, the 2013 version.I have configured cabling as 
shown in section "9.8 The KX3 and the KPA500”, figure 9.17, which shows use of 
the Keyline Interrupter, RCA cables, E980232 Adapter for the KX3, et al, with an RF 
switch between the K3 and KX3 in order to input either to the KAT500/KPA500 pair.

How do I put the KPA500 into OPER when I have powered off the K3 and switched 
the my KX3?

Currently, when I turn off the K3, the KPA500 always switches to STBY and I can 
not then switch the KPA500 from STBY back to OPER.I am thinking that there 
might be a setting somewhere?




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

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

Re: [Elecraft] The Technical Side of Ham Radio

[Jim Brown]

On Sat,10/31/2015 9:56 AM, Alan wrote:
The main effect is it doesn't work correctly on transient signals, 
like pulse-modulated or swept. 


That suggest that it would not do well measuring a series of dits.

73, Jim K9YC
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

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

Re: [Elecraft] The Technical Side of Ham Radio

[Alan]

On 10/31/2015 04:44 PM, Jim Brown wrote:

On Sat,10/31/2015 9:56 AM, Alan wrote:

The main effect is it doesn't work correctly on transient signals,
like pulse-modulated or swept.


That suggest that it would not do well measuring a series of dits.


It's only an issue with sweeps wider than 200 kHz.

Alan N1AL

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

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