[Elecraft] K3: Use of LP-Pan & Roofing filter interaction

[Edward R Cole]

Looking into refining my use of the LP-Pan on the 1st IF of the 
K3.  One artifact is that the spectrum of the IF has a gain dip at 
the center frequency which apparently is due to interaction of the 
2.8 KHz roofing filter that is also loading the IF.

I am wondering if I might be able to program the K3 to use an open 
xtal filter position when I am using the LP-Pan?  I do not use any of 
the K3 beyond the IF so loss of use is not an issue; all signal 
processing is via the LP-Pan and a Delta44 soundcard to the sw 
running in my computer.  I might have to add a resistor to provide 
proper impedance loading for proper gain levels to appear at the IF output.

The dip in gain of the spectrum makes that frequency unusable in my 
application so looking for solutions (that are not invasive to the 
radio).  One option is inserting a pin diode switch to isolate the 
roofing filter bank but that requires some RF designing and precise 
surgery on the RF board.

73, Ed - KL7UW

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Re: [Elecraft] KAT500

[Fred Jensen]

At Pacificon, I cornered one of my contest buddies, Bob, K6XX, an 
Elecraft employee, about my KAT500.  Well ... actually ... he cornered 
me about SOTA and the summit he lives on, we do know each other fairly 
well.  I asked him if the first KAT500 had shipped.  He said "Yes."  I 
said, "And, it was mine?".  He said, "Only in your dreams!".  I really 
love you Bob. :-)  But, in reality,

They made a redesign based on field testing ... and thank you Elecraft 
for that.  It's now in production, yours and mine will come.  I looked 
at a production model, it has all the gozintas and gozoutas that I was 
looking for.  It'll come, they all have.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org

On 10/15/2012 12:45 PM, Jim Brown wrote:
> I was told by folks in the Elecraft booth that they had begun shipping
> production units. I'm pretty sure that things will start slowly and
> build over time.


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Re: [Elecraft] 9 and 15 Pin Y Connectors

[Don Wilhelm]

Bob,

I don't have a source, but I need to give you some information regarding 
the 9 pin connector.

The 9 pin 'Y' may give you problems.  RS-232 signalling is for point to 
point communications only.  If there are two drivers on a signal line, 
they will interfere with each other (even if idle).
In other words, if there is anything connected to pins 3, 4 or 7 in the 
device on the far side of the "Y" connector, it will interfere with 
communications between the K3 and the computer (Microham Digikeyer).

In other words, you cannot connect another device that normally drives 
an RS-232 interface.
Anything that is connected to the "Y" must be 'listen only'

73,
Don W3FPR

On 10/15/2012 8:02 PM, Bob Garrett wrote:
> Greetings Listers,
>
>
>
> I'm getting ready to configure my K3 with my THP amplifier, Microham
> DigiKeyer II and my K3 Pod with is a speech box for us blind hams.  I know
> connecting more than one device to a 9 and/or 15 pin port is a slippery
> slope however, I need to do it and will figure out the conflicts along the
> way.
>

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Re: [Elecraft] 9 and 15 Pin Y Connectors

[Joe Subich, W4TV]

Note: you can not use a full DB9 splitter with microHAM interface
and the K3.  You must use a "listen only" Y - one that connects
the "foreign" device to only the data *from* the K3.  The data
lines *to* the K3 can connect only to the microHAM interface (or
computer).

73,

... Joe, W4TV


On 10/15/2012 8:51 PM, Phil&Debbie wrote:
> Bob – I get most of my cables and splitters from
> www.cablewholesale.com.  Here’s a link to a DB9 splitter:
>
> www.cablewholesale.com/specs/db9-splitter/30d1-27208.htm
>
> And here’s a link to a DB15HD splitter:
>
> www.cablewholesale.com/specs/vga-splitter-cable/10h1-27708.htm
>
> These splitters have all pins connected through.
>
> Phil – AD5X
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Re: [Elecraft] 9 and 15 Pin Y Connectors

Bob – I get most of my cables and splitters from www.cablewholesale.com.  
Here’s a link to a DB9 splitter:

www.cablewholesale.com/specs/db9-splitter/30d1-27208.htm

And here’s a link to a DB15HD splitter:

www.cablewholesale.com/specs/vga-splitter-cable/10h1-27708.htm

These splitters have all pins connected through.

Phil – AD5X
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[Elecraft] 9 and 15 Pin Y Connectors

[Bob Garrett]

Greetings Listers,

 

I'm getting ready to configure my K3 with my THP amplifier, Microham
DigiKeyer II and my K3 Pod with is a speech box for us blind hams.  I know
connecting more than one device to a 9 and/or 15 pin port is a slippery
slope however, I need to do it and will figure out the conflicts along the
way.  

 

Does anyone have a source for good quality 9 and 15 pin Y connectors?
Please let me know and thanks in advance for your help.  73, Bob K3UL

 

 

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[Elecraft] Wonderful endorsement

[Paul VanOveren]

Both of the current dxpeditions TT8TT, Chad and 3B9SP, Rodriques Island, are/am 
using Elecraft K3’s and KPA 500’s. And my K3, KPA500 and P3 have them in my log 
several times...

NF8J
Paul VanOveren 
Alto, Mi
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[Elecraft] Success with KX3 transmit Bias calibration test

[Mike Weir]

I had received some emails from Gary and Vic at Elecraft today regarding my 
failure to complete the transmit bias test on the KX3. The trouble turned out 
to be my power supply to the KX3 was not putting out the current needed to run 
the test. I was needing in the ball park of 3 amps from the supply that 
apparently it was not giving. I hooked the KX3 up to the Astron supply  and the 
test ran textbook perfect. Thanks to all for there ideas and support. 
MikeVE3WDM 
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[Elecraft] K3 / P3 Sold and thank you.

[W0WOI]

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Re: [Elecraft] K3 RS232 Query

[Don Wilhelm]

John,

You will not need to connect any more pins, but you can try putting a 
jumper between pins 7 and 8 at the computer end of the cable.  No 
guarantee that it will help, that depends on whether your application 
tries to do handshaking, but it certainly will not hurt anything.

You did not state that you closed and restarted Winlog32 after you 
changed the com ports.  You might even want to try a computer restart.

73,
Don W3FPR

On 10/15/2012 5:07 PM, john petters wrote:
> Hi Dick,
> Just connected the USB adaptor to the serial lead on com 8, where it is,
> and opened Winlog32 OK with full control.
> Disconnected USB and plugged the serial lead into Com 1 and re-set the
> programme to Com 1 and it will display the the frequency as I spin the
> VFO, but I cannot control the K3 with the computer. I'm using the three
> wires as specified in the manual. Pins 2, 3 & 5. Do I need to connect
> the other two pins?
> Haven't got any other serial devices I can try, but no reason to believe
> the Com ports should be faulty.
>

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Re: [Elecraft] K3 RS232 Query

[iain macdonnell - N6ML]

John,

Your description is rather confusing... were you using the same
home-made cable with the USB adapter as you are now trying to use with
COM1? If so, it suggests that your COM1 is defective.

73,

~iain / N6ML



On Mon, Oct 15, 2012 at 2:07 PM, john petters
 wrote:
>
>
>
>
>
> Hi Dick,
> Just connected the USB adaptor to the serial lead on com 8, where it is,
> and opened Winlog32 OK with full control.
> Disconnected USB and plugged the serial lead into Com 1 and re-set the
> programme to Com 1 and it will display the the frequency as I spin the
> VFO, but I cannot control the K3 with the computer. I'm using the three
> wires as specified in the manual. Pins 2, 3 & 5. Do I need to connect
> the other two pins?
> Haven't got any other serial devices I can try, but no reason to believe
> the Com ports should be faulty.
> 73
> John
> On 14/10/2012 22:34, Dick Dievendorff wrote:
>> Can another program find the K3 using your lead.  serial port speed issue? 
>> Do Com1 and 2 work with any other devices?  Are the com ports OK in the 
>> Windows device manager?
>>
>> Dick, K6KR
>
> --
> John Petters
> www.traditional-jazz.com
> Amateur Radio Station G3YPZ
>
> --
> John Petters
> www.traditional-jazz.com
> Amateur Radio Station G3YPZ
>
>
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Re: [Elecraft] KAT500

[Bill Harris]

Any plans to come out with a remote AT?When will the KTA500 be on your 
"Products" page?
73 de Bill-w7kxb


  
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Re: [Elecraft] K3 RS232 Query

[Dick Dievendorff]

No, it's just the three pins, RxD on 2, RxD on 3, and signal ground on 5.

If you can read IF unsolicited data from the K3 but it does not respond to
commands, perhaps TxD is not wiggling?If the K3 configuration menu is
set to AUTOINF = AUTO 1 then the K3 will send an IF packet on VFO A change
without requiring a command.

Can the K3 Utility connect to the K3 with your cable?  

http://www.db9-pinout.com/

Could you borrow a straight-thru 9-pin serial cable to help isolate the
problem?

73 de Dick, K6KR



-Original Message-
From: John Petters [mailto:jdpett...@btinternet.com] 
Sent: Monday, October 15, 2012 2:06 PM
To: Dick Dievendorff
Cc: john petters; Elecraft
Subject: Re: [Elecraft] K3 RS232 Query


Hi Dick,
Just connected the USB adaptor to the serial lead on com 8, where it is, and
opened Winlog32 OK with full control.
Disconnected USB and plugged the serial lead into Com 1 and re-set the
programme to Com 1 and it will display the the frequency as I spin the VFO,
but I cannot control the K3 with the computer. I'm using the three wires as
specified in the manual. Pins 2, 3 & 5. Do I need to connect the other two
pins?
Haven't got any other serial devices I can try, but no reason to believe the
Com ports should be faulty.
73
John
On 14/10/2012 22:34, Dick Dievendorff wrote:
> Can another program find the K3 using your lead.  serial port speed issue?
Do Com1 and 2 work with any other devices?  Are the com ports OK in the
Windows device manager?
> 
> Dick, K6KR

--
John Petters
www.traditional-jazz.com
Amateur Radio Station G3YPZ

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Re: [Elecraft] K3 RS232 Query

[john petters]

Hi Dick,
Just connected the USB adaptor to the serial lead on com 8, where it is,
and opened Winlog32 OK with full control.
Disconnected USB and plugged the serial lead into Com 1 and re-set the
programme to Com 1 and it will display the the frequency as I spin the
VFO, but I cannot control the K3 with the computer. I'm using the three
wires as specified in the manual. Pins 2, 3 & 5. Do I need to connect
the other two pins?
Haven't got any other serial devices I can try, but no reason to believe
the Com ports should be faulty.
73
John
On 14/10/2012 22:34, Dick Dievendorff wrote:
> Can another program find the K3 using your lead.  serial port speed issue? Do 
> Com1 and 2 work with any other devices?  Are the com ports OK in the Windows 
> device manager?
> 
> Dick, K6KR

-- 
John Petters
www.traditional-jazz.com
Amateur Radio Station G3YPZ

-- 
John Petters
www.traditional-jazz.com
Amateur Radio Station G3YPZ


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Re: [Elecraft] KAT500

[Eric Swartz - WA6HHQ, Elecraft]

Hi Bob,

I apologize for the confusion on  this. You are only 1 day later, as the 
Friday phone orders were entered after the Friday Dayton orders.  Your 
order will ship before the Saturday orders. The introduction and first 
sales of the KAT500 on Friday for Dayton attendees was the Dayton 'special'.

If Vicki said what you said below, she was mistaken. (I'd ask her, but 
Vicki is no longer with the company.) We were not planning on taking 
phone orders that Friday, but some heard about it from Dayton attendees 
and they overloaded the staff here by calling that day. To say it was a 
crazy Day for the sales team here is an understatement ;-)

Also note: HTML clipboard We are only shipping KAT500-F factory 
assembled orders for the first two weeks as we finalize the kit assembly 
manual. (As is our normal process, we use feedback from field testers 
and our in-house assembly staff to improve the assembly manual during 
that period.)

We are ramping up production as fast as is practical. Please be patient 
with us as we go through the first several weeks of ramp-up. We're all 
working hard to get these out as quickly as possible without sacrificing 
quality.

73,

Eric
---
www.elecraft.com

On 10/15/2012 12:46 PM, Bob wrote:
> Hopefully that is not the case!   On the 1st day of Dayton they also took 
> phone
> orders.
> At that time I was given my "official" time and was told I would be entered 
> into
> the queue
> by time of order placement.
>
> So now I'm 3 days down in the queue?I surely hope not.  Who said the
> original terms
> were changed.   I was given my time of order from Vicki on May18th.
>
> 73,
> Bob
> K2TK
>
>
>
> On 10/15/2012 3:06 PM, N5GE wrote:
>> Yes it is.
>>
>> Those who purchased at Dayton will get theirs first, then the rest of
>> us, according to the ladies at E Shipping...
>>
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Re: [Elecraft] K2 Finals - Chronic Blow-Outs

[John Magliacane]

Hi Ray.

One possibility might be improper assembly of the transceiver that is causing 
the transistors to not mate properly with the heatsink on the bottom chassis.

Been there... done that.  :-)

Here's the story behind repeated 2SC1969 failures in my K2 back in 2003, and 
the mechanics behind the cause:

http://mailman.qth.net/pipermail/elecraft/2003-September/023145.html

http://mailman.qth.net/pipermail/elecraft/2003-September/023307.html

There were never any over-current issues, and it took several transistor 
replacements before I realized the problem was due to the incorrect placement 
of the lock washers associated with the 2-D fasteners.

Good luck!


73, de John, KD2BD

--
Visit John on the Web at:

http://www.qsl.net/kd2bd/

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Re: [Elecraft] KAT500

[Bob]

Hopefully that is not the case!   On the 1st day of Dayton they also took phone 
orders.
At that time I was given my "official" time and was told I would be entered 
into 
the queue
by time of order placement.

So now I'm 3 days down in the queue?I surely hope not.  Who said the 
original terms
were changed.   I was given my time of order from Vicki on May18th.

73,
Bob
K2TK



On 10/15/2012 3:06 PM, N5GE wrote:
> Yes it is.
>
> Those who purchased at Dayton will get theirs first, then the rest of
> us, according to the ladies at E Shipping...
>
> Amateur Radio Operator N5GE
> ARRL Lifetime Member
> QCWA Lifetime Member
>
> On Mon, 15 Oct 2012 11:37:22 -0700 (PDT), GI4FZD 
> wrote:
>
>> Now that it is the 15th October is the KAT500 shipping?
>> cheers
>> Paul
>> GI4FZD
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Re: [Elecraft] KAT500

[Jim Brown]

I was told by folks in the Elecraft booth that they had begun shipping 
production units. I'm pretty sure that things will start slowly and 
build over time.

73, Jim K9YC
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Re: [Elecraft] Astron SS-30M Power Supply

[Craig Smith]

The Astron SS-30M has been sold.

73  Craig  AC0DS

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Re: [Elecraft] KAT500

[N5GE]

Yes it is.

Those who purchased at Dayton will get theirs first, then the rest of
us, according to the ladies at E Shipping...

Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

On Mon, 15 Oct 2012 11:37:22 -0700 (PDT), GI4FZD 
wrote:

>Now that it is the 15th October is the KAT500 shipping?
>cheers
>Paul
>GI4FZD

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[Elecraft] Elecraft CW Net Report for October 14th & 15th, 2012

[kevinr]

Good Afternoon,
Both bands were a little weak yesterday.  However, there was a 
little discussion about Pacificon and Elecraft along with the usual 
wishing for rain :)  Luckily most folks got a little so the land is not 
so parched.  Here it seems not to be soaking in but rather simply 
running off.  After so long it will take a while for the ground to wet 
properly :)
I had read earlier today that there some geomagnetic storming going 
on lately but there was not much noise on either band. A few clicks of 
lightning pumped the AGC for a second but losing a letter here and there 
is OK.  Once the QSB gets rapid I shut off the AGC so I can copy a 
little better.  Between auroral flutter from the north and lightning 
strikes from the Midwest cross continent copy gets tough.

On to the lists =>

   On 14049.5 kHz at 2200z:
W0CZ - Ken - ND - K3 - 457
K0DTJ - Brian - CA - K3 - 4113
NO8V - John - MI - K3 - 820
W8OV - Dave - TX - K3 - 3139

   On 7045.5 kHz at 0200z:
W0CZ - Ken - ND - K3 - 457
K0DTJ - Brian - CA - K3 - 4113
K9ZTV - Kent - MO - K3 - 21
W8OV - Dave - TX - K3 - 3139
N0TA - John - CO - K3 - 994

   I hope you are all enjoying the transition to autumn. Time to button 
up for winter. Get all the antenna repair work done and the wood stacked 
and covered.  Then I can spend a cozy winter snowed in on a mountain.  
But, then again, we may have a warm, wet one this year.
Until next week stay well,
   73,
  Kevin.  KD5ONS

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Re: [Elecraft] KAT500

[GI4FZD]

Yes I saw that one had shipped, was that the only one?
Did anybody else get notified?
Cheers
Paul
GI4FZD




--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KAT500-tp7558017p7564166.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] KAT500

[iain macdonnell - N6ML]

On Mon, Oct 15, 2012 at 11:37 AM, GI4FZD  wrote:
> Now that it is the 15th October is the KAT500 shipping?

Apparently; http://elecraft.365791.n2.nabble.com/KAT500-td7564028.html

73,

~iain / N6ML
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Re: [Elecraft] KAT500

[GI4FZD]

Now that it is the 15th October is the KAT500 shipping?
cheers
Paul
GI4FZD



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Re: [Elecraft] SVGA Keyboard compatibility

[Dale Boresz]

Just another data point, but the Logitech MK360 wireless USB keyboard 
and mouse combo from Walmart works FB here (see link below). Not using 
the mouse of course, but the keyboard and mouse combo may be used 
elsewhere if desired.

< http://www.walmart.com/ip/Logitech-Wireless-Combo-MK360/17300885 >

I am not the one who discovered this particular version; someone else on 
the list did (sorry, I cannot remember who it was), but thanks to that 
individual!

73, Dale
WA8SRA

On 10/15/2012 2:04 PM, Paul Saffren N6HZ wrote:
> Hi Glen,
>
> I am not sure about the Microsoft wireless keyboard, does it have mouse with
> it?  The USB on the SVGA does not support composite keyboards, in other
> words, those with mice.   The Logitech K360 wireless works really good and I
> think you can still find them at Staples for around $15 each.
>
> 73,
>
> Paul
>
>
>
>
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> View this message in context: 
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Re: [Elecraft] SVGA Keyboard compatibility

[Paul Saffren N6HZ]

Hi Glen, 

I am not sure about the Microsoft wireless keyboard, does it have mouse with
it?  The USB on the SVGA does not support composite keyboards, in other
words, those with mice.   The Logitech K360 wireless works really good and I
think you can still find them at Staples for around $15 each. 

73, 

Paul




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Re: [Elecraft] BNC connector

[Jim Brown]

On 10/15/2012 10:02 AM, John wrote:
> Instead of using a balun, can a male BNC to dual binding posts adaptor be 
> used to connect a random length wire and counterpoise to the K1?

SURE!  It's even the right way to do it. In a typical battery portable 
operation, there's no good reason to use a common mode choke or any form 
of "balun."

The only situation in which a good ferrite choke could be useful is when 
the rig is somehow earth-referenced, as it could be when used at home 
running on mains power, or with the chassis tied to earth ground.  In 
that situation, the feedline could pick up noise and couple it to the 
antenna, and the choke prevents that.

73, Jim K9YC
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[Elecraft] SVGA Keyboard compatibility

[GLEN BROWN]

Just installed the new SVGA firmware and it's great!
The only problem I have so far is that it doesn't work with my Microsoft
wireless keyboard, which uses a little USB wireless device on the computer
(P3) side.
This keyboard still works FB with the computer, but is dead to the P3.  The
P3 is ok with a wired USB keyboard.
Has anybody else seen this problem?
Glen W6GJB
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Re: [Elecraft] KX3 I/Q to soundcard isolation

[Jim Brown]

On 10/15/2012 9:10 AM, N6363LLL wrote:
> There are big differences between interfacing a PC to the KX3 I/Q port
> compared to the needs of digital modes that use the headphone and mic audio
> connections.  The I/Q port requires a flat bandpass to at least 48Khz.

The noise some are experiencing sounds like a Pin One Problem in the 
computer, the rig, or both. Two cures, use both, but do #1 first, 
because it's simpler and cheaper.  NO TRANSFORMER IS REQUIRED.

1) Bond from the chassis of the computer/sound card to the chassis of 
the rig with short fat copper.  For more on this see 
http://audiosystemsgroup.com/HamInterfacing.pdf

2) Use a serious multi-turn ferrite choke on the audio cable, using the 
measured data in Appendix Oneof http://audiosystemsgroup.com/RFI-Ham.pdf 
as a guide.  Use Fair-Rite #31 or #43, depending the bands where you are 
hearing noise.  Put the choke on the audio cable(s), NOT on the bonding 
wire.

3) Another important point.  High futility cables often have lousy 
shields (and often no shield at all, only a wire connecting the shield 
contacts). I build my own audio cables using RG58 or RG174 and audio 
connectors that I buy from Full Compass in Madison, WI. See the 
above-cited references for part numbers.

73, Jim K9YC


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[Elecraft] BNC connector

[John]

Instead of using a balun, can a male BNC to dual binding posts adaptor be used 
to connect a random length wire and counterpoise to the K1?  I recently 
purchased a K1 and really like it. 73, John

Sent from my iPad
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Re: [Elecraft] K3 firmware 4.51 - I want to go back one version

[Dick Dievendorff]

You probably still it in your firmware folder.  Using the Windows Explorer,
navigate to your firmware folder, and delete hmcu0451.hex, or rename
hmcu0451.hex to hmcu0451.savehex

Then click "Check Versions Now" and the K3 Utility will find the highest
version MCU # (examining only hmcu.hex files) in the folder as
"available". You can then "send all firmware" to go down one MCU level.

73 de Dick, K6KR


-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Watkins
Sent: Friday, October 12, 2012 8:24 PM
To: Post Elecraft
Subject: [Elecraft] K3 firmware 4.51 - I want to go back one version

Help!  Don't like what I am seeing with 4.51..for now just need to go
back one version.

Where can I find the previous version to load?

Thanks, John
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Re: [Elecraft] KX3 I/Q to soundcard isolation

[Barry LaZar]

Jeff et al,
 I think I've been misreading things. I just sent you a note, but I 
was thinking the problem was on the computer side. I just checked my 
setup with no antenna input. There is a low level whine, but it 
disappears when I connect up the antenna. I suspect I will detect it 
again on 15 or 10 meters until I turn on the preamp.

 My earlier comments were based on using the I&Q data with NaP3 and 
using the computer's speakers for audio out. Except for some refresh 
noise, which I noted in a private note to you, there is no noise problem.

 At this point, I'm not sure what the lash up is. When using the 
KX3's I&Q, I turn down/off the radio's audio and do EVERYTHING on my 
laptop. I do use the line in to my laptop when I want to use the radio 
as intended but want greater audio than is available from the radio's 
speaker. What am I missing??

73,
Barry
K3NDM


On 10/15/2012 8:40 AM, Jeff Herr wrote:
> When I connect to my asus laptop I get a flood of noise.in the radio.
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Giampiero Raschetti
> Sent: Sunday, October 14, 2012 22:02
> To: Barry LaZar
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KX3 I/Q to soundcard isolation
>
> I  do connect KX3 I&Q directly into my MacBookPro stereo in-line without any
> additional isolation too and it works great without any problem at all
> running under a parallels desktop virtual machine.
> Is there any special reason to isolate this line ?
>
> 73, iw2esl / Giampiero
>
>
> Sent from my iPad
>
> On Oct 14, 2012, at 11:08 PM, Barry LaZar  wrote:
>
>> Jeff,
>>   I don't know what problem you're having, but I run without any
>> additional isolation with no problem. I go directly from my KX3 I&Q
>> out to my soundcard. Try it and see if you really need to go to the extra
> grief.
>>
>> 73,
>> Barry
>> K3NDM
>>
>> On 10/14/2012 4:43 PM, Jeff Herr wrote:
>>> I need to provide electrical isolation between the I/Q output and my
>>> mic/line input.
>>> Since this is a 2 channel output I need 2 channel (stereo) isolation.
>>>
>>> Is there a commercial product anyone can point out to do this?
>>>
>>> If not then I must choose a couple of audio transformers and wire
>>> them up to do the job.
>>> Would someone care to make a recommendation?
>>>
>>> Here is the DigiKey audio transformer page for easy reference
>>> http://www.digikey.com/product-search/en/transformers/audio/786564
>>>
>>>
>>>
>>> Jeff Herr  WW6L
>>> 4636 Kelton Way
>>> Sacramento,CA 95838
>>> 916.925.6089
>>> her...@comcast.net
>>>
>>>
>>>
>>>
>>>
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Re: [Elecraft] KX3 I/Q to soundcard isolation

[N6363LLL]

Hello All,

There are big differences between interfacing a PC to the KX3 I/Q port
compared to the needs of digital modes that use the headphone and mic audio
connections.  The I/Q port requires a flat bandpass to at least 48Khz.  If
you decide to use isolation transformers for the I/Q port, they must be very
high quality and support wide bandwidth.  If you use an external soundcard
for the I/Q port, you must use a high quality soundcard that meets pro audio
standards for noise, etc.  See the data on the N8LP website about soundcards
suitable for I/Q use.  Your laptop might have a high quality stereo input
soundcard and it's worth trying that first.

For the digital modes, a Rigblaster, Microham interface, US Navigator
interface, RigExpert, SignalLink, etc. isolate monophonic low bandwidth
audio going in both directions.  They are not suitable for use on the I/Q
port.

Steve Silverman  KB3SII  ... .. ..



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[Elecraft] FS: Astron SS-30M Power Supply

[Craig Smith]

I have for sale my Astron SS-30M power supply in perfect condition.  This is 
ideal for powering a K3 class 100 watt rig, and provides 30 amps in amateur 
class service and 25 amps continuous duty.  Metering of both output voltage and 
current.   I bought this new in 2006 and it has since performed flawlessly in 
my K3 CW contesting setup.   Quiet both electrically and acoustically.   

This unit has been modded to include amber LED backlighting of both meters.  
This provides attractive lighting so that the meter readings are visible in a 
dark environment.   Light color is a good match to the K3 display.

Your purchase includes the original Astron documentation and box.

Price is $130 which includes USPS Priority Mail shipping to you USA address.  
PayPal only, please.

If interested, please contact me directly via email: craig (at) 
powersmith (dot) net


73  Craig  AC0DS




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[Elecraft] Acom 1000 Amp for sale or trade

[l s]

I have an Acom 1000 mint condition with a nos GU7B spare tube
that I would like to trade for a K3 transceiver or sell for $2600.
Prefer a local or within reasonable driving distance transaction.

Tnx & 73

Lou KI6UM
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[Elecraft] K3 firmware 4.51 - I want to go back one version

[John Watkins]

Help!  Don't like what I am seeing with 4.51..for now just need to go back 
one version.

Where can I find the previous version to load?

Thanks, John
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[Elecraft] Sell K3 / P3

[W0WOI]

Selling factory assembled K3 s/n 541, P3 w/SVGA, KUSB, PR-6,
KAT3, KXV3, 400 and 1800 Hz filters, Elecraft, KE7X and Nifty  manuals.
 
Current factory mods installed at Elecraft, software current, excellent  
cosmetic and operating condition from non-smoking environment of its original  
and only owner.  No haggle $2500 and off reflector to _W0WOI@aol.com_ 
(mailto:w0...@aol.com)  or  515-386-2262
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[Elecraft] KXBC3 Error Code

[Reed]

After installing the KBXC3 charger board I get in A VFO d=002 & B VFO 
ERR BC3 when trying to enter the time.  Firmware is 1.22. Tried 
re-seating the board and re-installed firmware, but didn't fix the 
error.  The hour digit blinks once and when moving A VFO is when I get 
the error.  Wondering if anyone else is having this problem?

Reed  W4JZ
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[Elecraft] KX3 - KXBC3 install

[Art Bross]

Installed my KXBC3 battery charger board last night in #1435 and all is well. 
No error codes and time set OK as well as alarm set OK and worked. I used 
spacer and screw from included hardware but mounting screws from old board. Set 
to WWV and after 24hr, seconds are still right on.

Art

KC7GF


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[Elecraft] Efficiency of speech processing in KX3

[Ignacy]

In the past I extolled virtues of speech processing in KX3 but it seems that
this was premature. 

In a number of SSB QSOs, KX3 was not too strong despite setting COMP to the
max and MIC GAIN to a few bars. Many marginal QSOs in portable situation
where an extra few db would help quite a bit. 

LP100 has a measurement of avg to peak power. K3, my standard of comparison,
can approach -7db. KX3 does between -11 and -13db. Strangely, K2 was better
at -9db.
In comparisons, K2 sounded stronger than KX3.  So KX3 has an extra potential
of 4-6db.

So speech processor in KX3 appears to be unfinished. Not much difference
between CMP settings of 20 and 30 (max). In contrast, K3 sounds good at COMP
of 20, has contest/DX quality at about 28, and anything above 30 is way too
much.

Any comments?

K3 with earlier release of firmware also had a weak speech processor. After
a fix to firmware, K3 is now a very efficient SSB radio. 

Ignacy, NO9E






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Re: [Elecraft] KX3 I/Q to soundcard isolation

[Giampiero Raschetti]

Do you have this flood of noise in any laptop power condition or only when
operating while battery are charging and no noise when running with battery
power alone ?


On Mon, Oct 15, 2012 at 2:40 PM, Jeff Herr  wrote:

> When I connect to my asus laptop I get a flood of noise.in the radio.
>
> -Original Message-
> From: elecraft-boun...@mailman.qth.net
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Giampiero Raschetti
> Sent: Sunday, October 14, 2012 22:02
> To: Barry LaZar
> Cc: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] KX3 I/Q to soundcard isolation
>
> I  do connect KX3 I&Q directly into my MacBookPro stereo in-line without
> any
> additional isolation too and it works great without any problem at all
> running under a parallels desktop virtual machine.
> Is there any special reason to isolate this line ?
>
> 73, iw2esl / Giampiero
>
>
> Sent from my iPad
>
> On Oct 14, 2012, at 11:08 PM, Barry LaZar  wrote:
>
> > Jeff,
> >  I don't know what problem you're having, but I run without any
> > additional isolation with no problem. I go directly from my KX3 I&Q
> > out to my soundcard. Try it and see if you really need to go to the extra
> grief.
> >
> >
> > 73,
> > Barry
> > K3NDM
> >
> > On 10/14/2012 4:43 PM, Jeff Herr wrote:
> >> I need to provide electrical isolation between the I/Q output and my
> >> mic/line input.
> >> Since this is a 2 channel output I need 2 channel (stereo) isolation.
> >>
> >> Is there a commercial product anyone can point out to do this?
> >>
> >> If not then I must choose a couple of audio transformers and wire
> >> them up to do the job.
> >> Would someone care to make a recommendation?
> >>
> >> Here is the DigiKey audio transformer page for easy reference
> >> http://www.digikey.com/product-search/en/transformers/audio/786564
> >>
> >>
> >>
> >> Jeff Herr  WW6L
> >> 4636 Kelton Way
> >> Sacramento,CA 95838
> >> 916.925.6089
> >> her...@comcast.net
> >>
> >>
> >>
> >>
> >>
> >> __
> >> Elecraft mailing list
> >> Home: http://mailman.qth.net/mailman/listinfo/elecraft
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> >
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>


-- 
Giampiero Raschetti
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Re: [Elecraft] KX3 I/Q to soundcard isolation

[Jeff Herr]

When I connect to my asus laptop I get a flood of noise.in the radio.

-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Giampiero Raschetti
Sent: Sunday, October 14, 2012 22:02
To: Barry LaZar
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] KX3 I/Q to soundcard isolation

I  do connect KX3 I&Q directly into my MacBookPro stereo in-line without any
additional isolation too and it works great without any problem at all
running under a parallels desktop virtual machine.
Is there any special reason to isolate this line ?

73, iw2esl / Giampiero


Sent from my iPad

On Oct 14, 2012, at 11:08 PM, Barry LaZar  wrote:

> Jeff,
>  I don't know what problem you're having, but I run without any 
> additional isolation with no problem. I go directly from my KX3 I&Q 
> out to my soundcard. Try it and see if you really need to go to the extra
grief.
> 
> 
> 73,
> Barry
> K3NDM
> 
> On 10/14/2012 4:43 PM, Jeff Herr wrote:
>> I need to provide electrical isolation between the I/Q output and my 
>> mic/line input.
>> Since this is a 2 channel output I need 2 channel (stereo) isolation.
>> 
>> Is there a commercial product anyone can point out to do this?
>> 
>> If not then I must choose a couple of audio transformers and wire 
>> them up to do the job.
>> Would someone care to make a recommendation?
>> 
>> Here is the DigiKey audio transformer page for easy reference
>> http://www.digikey.com/product-search/en/transformers/audio/786564
>> 
>> 
>> 
>> Jeff Herr  WW6L
>> 4636 Kelton Way
>> Sacramento,CA 95838
>> 916.925.6089
>> her...@comcast.net
>> 
>> 
>> 
>> 
>> 
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Re: [Elecraft] KX3 KXBC3 Error Code

[hawley, charles j jr]

Mine went well too. I updated to the latest version first. I did charge for 
about 4 hours and the 2400 mah NiMH came up to 11.7 vdc. The next day I went to 
charge again just to see, and the charger posted an err which was because the 
battery voltage was already high I believe. That err occurs if they are already 
charged.
So all as expected. 

Sent from my iPad

On Oct 14, 2012, at 11:37 PM, "Mark Hogan"  wrote:

> I installed mine tonight, added the standoff and lock washer from the
> original board.  All went well, no error message time was kept, I was
> already charged so I didn't try a charge cycle..
> 
> Mark Hogan N5OBC KX3 #31
> 
> 
> On Sunday, October 14, 2012, Wayne Burdick wrote:
> 
>> **
>> 
>> 
>> This pretty much has to be a firmware bug at the MCU. So far we
>> haven't been able to duplicate it, but we'll dig into it first thing
>> tomorrow.
>> 
>> 73,
>> Wayne
>> N6KR
>> 
>> On Oct 14, 2012, at 8:31 PM, Reed wrote:
>> 
>>> After installing the KXBC3 charger board I get in A VFO d=002 & B VFO
>>> ERR BC3 when trying to enter the time. Firmware is 1.22. Tried
>>> re-seating the board and re-installed firmware, but didn't fix the
>>> error. The hour digit blinks once and while turning A VFO is when the
>>> error occurs. Wondering if anyone else is having this problem?
>>> 
>>> Reed W4JZ
>>> 
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> -- 
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Re: [Elecraft] K3 intermittent low power issue

[K9IR]

Hi Mike--
 
Just saw your reply (in my spam folder!) after returning from a 2 week 
vacation; thanks very much. I ended up working via email with Elecraft support, 
but unfortunately we couldn't resolve it, so the rig currently is in CA for 
repair ;-). I will be very curious to learn from them why the power issue 
occurred.
 
73 Paula K9IR

From: N8XPQ [via Elecraft] 
To: K9IR  
Sent: Thursday, October 4, 2012 4:19 PM
Subject: Re: K3 intermittent low power issue


Have you checked the connections of the KPA3 100w amplifier module. I have a 
friend that was experiencing a similar issue, and discovered that the module 
had become unseated somewhat causing intermittent RF power output issues. I 
hope this helps. 

best of luck Mike N8XPQ 


If you reply to this email, your message will be added to the discussion 
below:http://elecraft.365791.n2.nabble.com/K3-intermittent-low-power-issue-tp7563274p7563703.html
 
To unsubscribe from K3 intermittent low power issue, click here.
NAML



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[Elecraft] Wanted: Elecraft K3 and P3 Options KTCX03-1, K144XV and P3SVGA card

[spitze1]

Hi friends!

I am looking for some used Elecraft Options to complete my setup:

1. KTCX03-1 TCXO 0.5 PPM High Stability Oscillator
2. K144XV Internal 2M 10 watt Xcvr
3. P3SVGA card

Drop me an email if you have something above for sale ;-)

Tnx

73s Alex NH7VW (OE6ASF, HB9TSF)



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Re: [Elecraft] KX3 Question

[Holger Schurig]

No, you can't do this with the "mini loop" antenna, you need a good &
strong signal source. Please read all the gory details at:

http://www.elecraft.com/manual/RX%20sideband%20null%20procedures%20rev%20A1.pdf

Works only with MCU 1.22 firmware.


73, DH3HS



P.S: Dear Elecraft webmaster: spaces in filenames suck!  Thos %20 are
not pleasing the eye ...  :-)
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