Re: [Elecraft] Portable Ops with KX3 along with KXPA100

[Bill Frantz]

FWIW, we had problems with noise from a Generac ix 800 (800 
watts) generator when we were running a special event station. 
It just covered the P3 with noise.


73 Bill AE6JV



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CA 95032


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Re: [Elecraft] Portable Ops with KX3 along with KXPA100

[w7aqk]

Any currently available Honda generator would certainly be adequate--even 
the EU1000 model.  I've run similar setups to what you describe from several 
different Hondas.  My own generator is a Yamaha 2400 watt model, but it's 
more than I need for just that.  In the past I've even used a small 600 watt 
Honda, and that worked O.K. too.


With Honda you are probably looking at the highest "dollar per watt" cost. 
The Yamaha is somewhat less, but a very good generator.  It's not quite as 
quiet (ambient noise vs. RFI) though, but only slightly less.  There are 
lots of alternatives out there, and some that have Honda engines.  The real 
issue may be RFI, and you just have to check that out first if you can.


Personally, I'd recommend something larger than a 1KW generator if you want 
to use it for camping, etc.  It's surprising how many small appliances can 
require a fairly high amount of power.  A coffee pot often requires 1200 
watts or more  That's why I opted for the Yamaha 2400 watt model.  In my 
case, I have a small travel trailer that I use for camping outings, and it 
has a 15000 BTU air conditioner.  A Honda EU2000 won't quite handle that, 
but the Yamaha will!  So, you have to think about the maximum requirement 
you are apt to have, and the ham rig probably won't be it!


Dave W7AQK


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Re: [Elecraft] Running stations with k3

[Walter Underwood]

Analog filters have phase delay. That would be stronger with a narrower filter. 
Also, the on-off CW signal has sidebands (the harmonics of the square wave). 
Maybe a narrower filter sounds “softer”? I have no idea what “full-bodied CW” 
means, of course.

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Sep 20, 2016, at 8:24 PM, WILLIE BABER  wrote:
> 
> It wasn't my term.  But I think "full-bodied" cw means a slightly wider I-F 
> to establish background noise that some ops want to hear, particularly if  
> the receiver has exceptional gain distribution and in-band IMD, which the 
> latest Icoms do have.  This gives articulation to cw signal outs of a quiet 
> back ground of noise, and so long as you are not dealing with an 
> exceptionally strong signal nearby, hard-wired fast agc can give relative 
> strength to the competing signals.  Then, a good cw op can pick out stations 
> actually easier than with a 400hz filter where RIT becomes more necessary.  
> Of course on the Icom radio there is no choice but to do this because 3khz  
> is the narrowest setting, though you could ask for more DSP filtering.   
> 
> So, here again, is what I mean:  set you K3 for 2.7khz and I-F DSP at 500hz 
> and tune in a s-9 signal.  Now engage your narrow cw filter (I can do 400hz, 
> 250hz, and 200hz).  Listen to the I-F back ground noise decrease relative to 
> the signal.  Notice too that  2.7 hz with 500hz of DSP sounds more 
> "full-bodied" than 400hz, 250hz, 200hz.   Of course, this is all good when 
> you are trying to hear a weak signal anyway as opposed to running a pileup of 
> stations.
> 
> My point is (or was in the discussion about this) if you like running 
> stations with an Icom you can enjoy running them in the same way with K3. But 
> what has to happen to the Icom radio when a signal like the one Guy describes 
> gets within the 3 khz roofing filter?  
> 
> On the k3 you can engage a 200 hz filter and carry on the east coast -EU 
> battle  If there is an advantage to contesting in Idaho it is that EU 
> stations from over the pole are seldom over s-9 and don't blink, you will 
> miss the EU opening, hi.  However,  I have seen east coast signals nearly peg 
> the meter of k3 a few times in 300z cwt.  
> 
> 73, Will, wj9b
> KX1, k2, so2r K3/P3
> 
> 
> CWops #1085
> CWA Advisor levels II and III
> http://cwops.org/
> 
> 
> On Tue, 9/20/16, Ron D'Eau Claire  wrote:
> 
> Subject: Re: [Elecraft] Running stations with k3
> To: "'F5vjc'" , "'Guy Olinger K2AV'" 
> 
> Cc: "'Elecraft Reflector Reflector'" 
> Date: Tuesday, September 20, 2016, 6:03 PM
> 
> A very long time ago
> (1950's) we called 'em "California
> Kilowatts" knowing
> that their driver
> stages were running a kilowatt at least and then the big
> amp following... 
> 
> On A.M. (not so much SSB then) 100% modulation
> was a starter. 150% produced
> a nice splatter
> that told everyone across the band that you were "on
> the
> air". The same with CW using very
> square wave keying that announced your
> presence over many kc/s with clicks that
> allowed everyone to read your call
> and know
> that "Big Al" (or whomever) was on his key. 
> 
> They seemed rampant on 75 and
> 20 meters. 
> 
> So the
> geography has shifted, but not the crazy interests of some
> operators.
> 
> 
> BTW, if you are interested in a 15 kW H.F. amp
> check out the "Tsunami":
> 
> http://ta5fa.blogspot.com/2013/03/15kw-hf-rf-amplifier-tube.html
> 
> I'm sure that some
> operators would use it to drive a "big" final amp,
> Hi! We
> can hope they don't find a way.
> 
> 
> 73, Ron AC7AC
> 
> 
> 
> -Original Message-
> From: Elecraft [mailto:elecraft-boun...@mailman.qth.net]
> On Behalf Of F5vjc
> Sent: Tuesday, September
> 20, 2016 3:01 PM
> To: Guy Olinger K2AV
> Cc: Elecraft Reflector Reflector
> Subject: Re: [Elecraft] Running stations with
> k3
> 
> This is the degeneration
> of Amateur radio, yes really, it's true.  These
> signals from Eu are invariably the dirtiest
> worst you will ever hear on the
> bands,
> spewing crap all over the band.
> 
> Below...
> 
> 
> "The "full body" (whatever that
> means) CW technique will NOT work in a DX
> test I've been in (Will knows where) with
> that 45 over S9 Italian station
> running 15
> kW and a 4 element beam on 40m pointed at the US when the
> band is
> wide open, and who has parked 400 Hz
> above or below me, AND I am trying to
> copy
> an S0 (if even that strong) basement noodle antenna QRP
> station."
> 
> 73 F5VJC
> 
> 
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> Help: http://mailman.qth.net/mmfaq.htm
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> Please help support this email list: 

Re: [Elecraft] Running stations with k3

[WILLIE BABER]

It wasn't my term.  But I think "full-bodied" cw means a slightly wider I-F to 
establish background noise that some ops want to hear, particularly if  the 
receiver has exceptional gain distribution and in-band IMD, which the latest 
Icoms do have.  This gives articulation to cw signal outs of a quiet back 
ground of noise, and so long as you are not dealing with an exceptionally 
strong signal nearby, hard-wired fast agc can give relative strength to the 
competing signals.  Then, a good cw op can pick out stations actually easier 
than with a 400hz filter where RIT becomes more necessary.  Of course on the 
Icom radio there is no choice but to do this because 3khz  is the narrowest 
setting, though you could ask for more DSP filtering.   

So, here again, is what I mean:  set you K3 for 2.7khz and I-F DSP at 500hz and 
tune in a s-9 signal.  Now engage your narrow cw filter (I can do 400hz, 250hz, 
and 200hz).  Listen to the I-F back ground noise decrease relative to the 
signal.  Notice too that  2.7 hz with 500hz of DSP sounds more "full-bodied" 
than 400hz, 250hz, 200hz.   Of course, this is all good when you are trying to 
hear a weak signal anyway as opposed to running a pileup of stations.

My point is (or was in the discussion about this) if you like running stations 
with an Icom you can enjoy running them in the same way with K3. But what has 
to happen to the Icom radio when a signal like the one Guy describes gets 
within the 3 khz roofing filter?  

On the k3 you can engage a 200 hz filter and carry on the east coast -EU battle 
 If there is an advantage to contesting in Idaho it is that EU stations from 
over the pole are seldom over s-9 and don't blink, you will miss the EU 
opening, hi.  However,  I have seen east coast signals nearly peg the meter of 
k3 a few times in 300z cwt.  

73, Will, wj9b
KX1, k2, so2r K3/P3


CWops #1085
CWA Advisor levels II and III
http://cwops.org/


On Tue, 9/20/16, Ron D'Eau Claire  wrote:

 Subject: Re: [Elecraft] Running stations with k3
 To: "'F5vjc'" , "'Guy Olinger K2AV'" 

 Cc: "'Elecraft Reflector Reflector'" 
 Date: Tuesday, September 20, 2016, 6:03 PM
 
 A very long time ago
 (1950's) we called 'em "California
 Kilowatts" knowing
 that their driver
 stages were running a kilowatt at least and then the big
 amp following... 
 
 On A.M. (not so much SSB then) 100% modulation
 was a starter. 150% produced
 a nice splatter
 that told everyone across the band that you were "on
 the
 air". The same with CW using very
 square wave keying that announced your
 presence over many kc/s with clicks that
 allowed everyone to read your call
 and know
 that "Big Al" (or whomever) was on his key. 
 
 They seemed rampant on 75 and
 20 meters. 
 
 So the
 geography has shifted, but not the crazy interests of some
 operators.
 
 
 BTW, if you are interested in a 15 kW H.F. amp
 check out the "Tsunami":
 
 http://ta5fa.blogspot.com/2013/03/15kw-hf-rf-amplifier-tube.html
 
 I'm sure that some
 operators would use it to drive a "big" final amp,
 Hi! We
 can hope they don't find a way.
 
 
 73, Ron AC7AC
 
 
 
 -Original Message-
 From: Elecraft [mailto:elecraft-boun...@mailman.qth.net]
 On Behalf Of F5vjc
 Sent: Tuesday, September
 20, 2016 3:01 PM
 To: Guy Olinger K2AV
 Cc: Elecraft Reflector Reflector
 Subject: Re: [Elecraft] Running stations with
 k3
 
 This is the degeneration
 of Amateur radio, yes really, it's true.  These
 signals from Eu are invariably the dirtiest
 worst you will ever hear on the
 bands,
 spewing crap all over the band.
 
 Below...
 
 
 "The "full body" (whatever that
 means) CW technique will NOT work in a DX
 test I've been in (Will knows where) with
 that 45 over S9 Italian station
 running 15
 kW and a 4 element beam on 40m pointed at the US when the
 band is
 wide open, and who has parked 400 Hz
 above or below me, AND I am trying to
 copy
 an S0 (if even that strong) basement noodle antenna QRP
 station."
 
 73 F5VJC
 
 
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[Elecraft] K3S and FSQcall

[n7wwa via Elecraft]

Anyone using the K3S and FSQcall.  I can get the audiocodecs to load from the
K3S to FSQcall but can't get the rig to key up and transmit.  I checked the
CAT file and set it to correct com port and baud rate but no joy.  Any
suggestions?
n7wwa



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[Elecraft] K3S - Storing Configurations for Operating Conditions

[MaverickNH]

So, having gotten my K3S configured to run WSJT-X/WSPR-2 Mode, what way(s)
can I use to store the configuration so that I can simply store and recall
the configuration rather than working all the menus and buttons, after going
off on other settings? I'll read the manual until I fall asleep tonight...

Thanks, Bret/N4SRN



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Re: [Elecraft] OT: K2

[Don Wilhelm]

Will,

Thank you for your fine words.  They are appreciated.  I continue to 
help where I can.


73,
Don W3FPR

On 9/20/2016 8:39 PM, WILLIE BABER wrote:

Hello Don,

You may never  know how many folks you have helped-out who are K2 owners.  As I 
mentioned in an earlier post, I didn't finish my K2/100 until very recently, 
serial number 0086.four years after I retired!  So, as you know, I had to 
do lots of mods. I think I got  them all.

Your posts got me through several issues, including the keying wave-form mod, 
alignment of the crystal filter (I used the newer crystals based on your post 
about  this--a big difference in my case), the power output instability problem 
(which led me to the Elecraft mod on this).and some more stuff I don't 
recall now.  I don't think there was one issue that I searched on that didn't 
include a response from you.  All your advice was dead on, too.

Anyone wanting to build K2 has a resource on this reflector in your advice. 
Thanks  for all your advice and easy to follow instructions.

I guess K2 is a legacy radio but it will out perform all those up-conversion 
radios, hands down.  Sweet sound too.  You may never need a K3!

73, Will, wj9b
Kx1, K2, so2r K3/P3





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Re: [Elecraft] OT: K2

[WILLIE BABER]

Hello Don,

You may never  know how many folks you have helped-out who are K2 owners.  As I 
mentioned in an earlier post, I didn't finish my K2/100 until very recently, 
serial number 0086.four years after I retired!  So, as you know, I had to 
do lots of mods. I think I got  them all. 

Your posts got me through several issues, including the keying wave-form mod, 
alignment of the crystal filter (I used the newer crystals based on your post 
about  this--a big difference in my case), the power output instability problem 
(which led me to the Elecraft mod on this).and some more stuff I don't 
recall now.  I don't think there was one issue that I searched on that didn't 
include a response from you.  All your advice was dead on, too. 

Anyone wanting to build K2 has a resource on this reflector in your advice. 
Thanks  for all your advice and easy to follow instructions.

I guess K2 is a legacy radio but it will out perform all those up-conversion 
radios, hands down.  Sweet sound too.  You may never need a K3!

73, Will, wj9b
Kx1, K2, so2r K3/P3


CWops #1085
CWA Advisor levels II and III
http://cwops.org/


On Tue, 9/20/16, Don Wilhelm  wrote:

 Subject: Re: [Elecraft] OT: K2
 To: elecraft@mailman.qth.net
 Date: Tuesday, September 20, 2016, 4:34 PM
 
 Eric,
 
 I do repairs, alignment and calibration and upgrades of the
 Elecraft 
 legacy gear (K2, K1, KX1 and XV series transverters), and I
 am as busy 
 as I want to be (sometimes more than I want to be).
 So there is still a lot of interest in that gear, but you
 are right, 
 most of the posts are about the K3, KX3 and KX2.
 Non-the-less, there are frequent posts about the legacy
 gear. Many of 
 the older posts about "how to do ..." are no longer seen,
 but those 
 questions do pop up occasionally.
 
 Many of the K2, K1 and KX1 posts come from folks who have
 purchased a 
 used transceiver.  In many cases, they did not get all
 the associated 
 pieces (counter probe for the K2, connecting cables for the
 KAT100, 
 power cables, etc.) so those new owners need assistance, and
 they do 
 often post to the reflector.
 
 73,
 Don W3FPR
 
 On 9/20/2016 2:35 PM, Eric J wrote:
 > I had recently stopped monitoring the reflector as I
 only have a K1 and
 > two K2's. Everything is K3 and subject lines rarely
 reflect that anymore
 > so it's hard to filter them. But I had a K2 problem and
 rejoined. Got a
 > response with solution within an hour! And discovered
 that I miss the OT
 > discussions from a unique bunch of experts. Most of the
 OTs are
 > interesting and more relevant to a non-KX/K3 owner. So
 I'm back to
 > monitoring only OTs. hi.
 >
 > The new products don't fill any need in my hamming that
 isn't satisfied
 > by the K2, but the ongoing development of the state of
 ham art at
 > Elecraft is extraordinary to see.
 >
 > Eric KE6US
 >
 > On 9/19/2016 8:05 PM, Ron D'Eau Claire wrote:
 >> P.S. Us K2 owners are rather quiet these days. I
 suspect few are still
 >> monitoring the reflector. I miss the many questions
 about soldering,
 >> testing, setting up an antenna, etc. But time, and
 products, moves on..
 >>
 >
 __
 > Elecraft mailing list
 > Home: http://mailman.qth.net/mailman/listinfo/elecraft
 > Help: http://mailman.qth.net/mmfaq.htm
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 > This list hosted by: http://www.qsl.net
 > Please help support this email list: http://www.qsl.net/donate.html
 > Message delivered to donw...@embarqmail.com
 >
 
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Re: [Elecraft] Running stations with k3

[Ron D'Eau Claire]

A very long time ago (1950's) we called 'em "California Kilowatts" knowing
that their driver stages were running a kilowatt at least and then the big
amp following... 

On A.M. (not so much SSB then) 100% modulation was a starter. 150% produced
a nice splatter that told everyone across the band that you were "on the
air". The same with CW using very square wave keying that announced your
presence over many kc/s with clicks that allowed everyone to read your call
and know that "Big Al" (or whomever) was on his key. 

They seemed rampant on 75 and 20 meters. 

So the geography has shifted, but not the crazy interests of some operators.


BTW, if you are interested in a 15 kW H.F. amp check out the "Tsunami":

http://ta5fa.blogspot.com/2013/03/15kw-hf-rf-amplifier-tube.html

I'm sure that some operators would use it to drive a "big" final amp, Hi! We
can hope they don't find a way. 

73, Ron AC7AC



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of F5vjc
Sent: Tuesday, September 20, 2016 3:01 PM
To: Guy Olinger K2AV
Cc: Elecraft Reflector Reflector
Subject: Re: [Elecraft] Running stations with k3

This is the degeneration of Amateur radio, yes really, it's true.  These
signals from Eu are invariably the dirtiest worst you will ever hear on the
bands, spewing crap all over the band.

Below...


"The "full body" (whatever that means) CW technique will NOT work in a DX
test I've been in (Will knows where) with that 45 over S9 Italian station
running 15 kW and a 4 element beam on 40m pointed at the US when the band is
wide open, and who has parked 400 Hz above or below me, AND I am trying to
copy an S0 (if even that strong) basement noodle antenna QRP station."

73 F5VJC


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Re: [Elecraft] K3 - am I locked into a specific microcode level

[Don Wilhelm]

Jim,

Go ahead and update your K3 with the latest level firmware!
K3 Utility has the capability to interrogate your K3 and determine which 
modules are to be loaded.
Yes, there are K3S unique firmware modules, but K3 Utility sorts all 
that out so you get the latest for your K3 configuration.
The firmware is "backwards compatible" - the K3 is not obsolete nor "old 
school".
Elecraft would not remove firmware upgrade support without notice - 
consider that the legacy gear is still being supported - the K2, K1, and 
KX1 - that is witness to the Elecraft support for all customers, new or 
old.  The first K2s were produced in 1998 and are still going strong and 
even those first K2s are capable of being upgraded with mod kits to be 
equal to the latest K2 being shipped (with some minor exceptions).  I 
think this is an example of the kind of support you will receive from 
Elecraft in the future.


73,
Don W3FPR

On 9/20/2016 11:47 AM, Jim Miller wrote:

I have not installed any of the K3S lookalike modules but was up to date
with all the mods until then.  I remember seeing that I could not load some
level unless I had the new synth boards.  I suspect I cannot load any more
code updates after that.

Does the code yet recognize where I am and load the latest code applicable
to my level?

Am I locked into a "latest level for my machine"?



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Re: [Elecraft] OT: K2

[Don Wilhelm]

Eric,

I do repairs, alignment and calibration and upgrades of the Elecraft 
legacy gear (K2, K1, KX1 and XV series transverters), and I am as busy 
as I want to be (sometimes more than I want to be).
So there is still a lot of interest in that gear, but you are right, 
most of the posts are about the K3, KX3 and KX2.
Non-the-less, there are frequent posts about the legacy gear. Many of 
the older posts about "how to do ..." are no longer seen, but those 
questions do pop up occasionally.


Many of the K2, K1 and KX1 posts come from folks who have purchased a 
used transceiver.  In many cases, they did not get all the associated 
pieces (counter probe for the K2, connecting cables for the KAT100, 
power cables, etc.) so those new owners need assistance, and they do 
often post to the reflector.


73,
Don W3FPR

On 9/20/2016 2:35 PM, Eric J wrote:

I had recently stopped monitoring the reflector as I only have a K1 and
two K2's. Everything is K3 and subject lines rarely reflect that anymore
so it's hard to filter them. But I had a K2 problem and rejoined. Got a
response with solution within an hour! And discovered that I miss the OT
discussions from a unique bunch of experts. Most of the OTs are
interesting and more relevant to a non-KX/K3 owner. So I'm back to
monitoring only OTs. hi.

The new products don't fill any need in my hamming that isn't satisfied
by the K2, but the ongoing development of the state of ham art at
Elecraft is extraordinary to see.

Eric KE6US

On 9/19/2016 8:05 PM, Ron D'Eau Claire wrote:

P.S. Us K2 owners are rather quiet these days. I suspect few are still
monitoring the reflector. I miss the many questions about soldering,
testing, setting up an antenna, etc. But time, and products, moves on..


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[Elecraft] For sale K3-100 factory built and updated mods with ATU

[Bill]

I want to purchase a K3s and will have filters moved along with other
add-ons. This lightly used K3 will include the tuner and  mods added to the
original unit. I have the documentation and we can work with the factory to
help you decide if you would like to add additional updates at your own
expense.  You can have the factory add your equipment which save you money
as I will be paying to remove what I wish to keep, like second receiver and
my filters, recorder and two meter module.  I will also included the 6 meter
preamp.  I will have the factory do the work and thoroughly check the K3
before selling and will pay for shipping from the factory once complete.
You can add more equipment and add-ons at your expense. If interested, I
will send you a list of what has been done and what will be done to make
your purchase a super great one.  Please contact me off reflector for more
details. The benefit: you get a factory built and updated basic K3 which is
a fabulous radio.  Scanned copies of orginial equipment and later factory
updates will be provided on request.  

Bill
K9YEQ

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Re: [Elecraft] K3s USB com port issue

[Don Wilhelm]

Howard,

How is the K3S RS-232 menu parameter configured.
If you are using the internal USB port in the K3S, it should be set to "USB"
If you are using an external USB to serial adapter, set the parameter to 
38400.


The COM port that is assigned by your PC should be the one you need to use.
A side-note - if you always plug to the same computer USB port, that COM 
port number should stay the same, but if you plug into a different USB 
port, the COM number will likely change.  Such is the state of things 
with the computer OS and we have to live with it.


For the PTT, the same COM port can be used for both rig control and 
PTT.  Set the K2 CONFIG menu PTT-KEY parameter to agree with your 
application - PTT will be driven with either RTS or DTR - the 
application and the K3 must agree on which one is used.


73,
Don W3FPR

On 9/20/2016 5:25 PM, Howard Sherer wrote:

I am running a K3s and the issue is with the USB com port. First, the com
port assignment is com 27 which seems strange for my simple PC set up. I
have tried to go into the Windows control panel and change it to a lower #
available port, but it will not take, but this is not the issue.



My problem is that the com port will sometimes be recognized by the K3
utility or other programs as either 9600 or 38400 baud on a totally random
basis. If I connect at 9600 the K3s will after a while change its port rate
to 38400 and I have to close the program that I am using and re start it at
38400. This will work fine for a while until the K3s then resets it baud
rate again to 9600 and I have to re start the program that I am using.



Using programs like WSJT-X which now has rig control is very frustrating
and I usually just turn off the rig control and use the com 27 only for ptt
control. I have even had issues while using WSJT-X and the rig control,
that will change the K3s com port to a new baud rate between Rx & Tx
transitions.



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Re: [Elecraft] K3s USB com port issue

[tomb18]

HiWhy not set the baud rate in the k3s to 38300  and be done with it?It's a 
menu option under rs232.Just set it and your software to 38400 and you will 
never worry about ut again.73 Tom va2fsq.com 

Sent from my Samsung Galaxy smartphone.
 Original message From: Howard Sherer  Date: 
2016-09-20  5:25 PM  (GMT-05:00) To: elecraft  
Subject: [Elecraft] K3s USB com port issue 
I have delayed posting this as I was hoping that I would see the same issue
posted by another user.



I am running a K3s and the issue is with the USB com port. First, the com
port assignment is com 27 which seems strange for my simple PC set up. I
have tried to go into the Windows control panel and change it to a lower #
available port, but it will not take, but this is not the issue.



My problem is that the com port will sometimes be recognized by the K3
utility or other programs as either 9600 or 38400 baud on a totally random
basis. If I connect at 9600 the K3s will after a while change its port rate
to 38400 and I have to close the program that I am using and re start it at
38400. This will work fine for a while until the K3s then resets it baud
rate again to 9600 and I have to re start the program that I am using.



Using programs like WSJT-X which now has rig control is very frustrating
and I usually just turn off the rig control and use the com 27 only for ptt
control. I have even had issues while using WSJT-X and the rig control,
that will change the K3s com port to a new baud rate between Rx & Tx
transitions.



Are there any suggestions out there? I only have a PC in the shack and
can’t try another PC. Is this a K3 issue of something with my PC?



Thanks,

Howard AE3T
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Re: [Elecraft] Running stations with k3

[F5vjc]

This is the degeneration of Amateur radio, yes really, it's true.  These
signals from Eu are invariably the dirtiest worst you will ever hear on the
bands, spewing crap all over the band.

Below...


"The "full body" (whatever that means) CW technique will NOT work in a DX
test I've been in (Will knows where) with that 45 over S9 Italian station
running 15 kW and a 4 element beam on 40m pointed at the US when the band
is wide open, and who has parked 400 Hz above or below me, AND I am trying
to copy an S0 (if even that strong) basement noodle antenna QRP station."

73 F5VJC

On 20 September 2016 at 20:45, Guy Olinger K2AV  wrote:

> The killer for that wide roofer approach is that loud enough stations can
> pump the hardware AGC before the signal gets to the DSP.
>
> The "full body" (whatever that means) CW technique will NOT work in a DX
> test I've been in (Will knows where) with that 45 over S9 Italian station
> running 15 kW and a 4 element beam on 40m pointed at the US when the band
> is wide open, and who has parked 400 Hz above or below me, AND I am trying
> to copy an S0 (if even that strong) basement noodle antenna QRP station.
>
> I want the skirts of the roofing filter and the DSP to COINCIDE and when I
> hit the edge of the 450 or 350 Hz, I want the skirts do a VERY sharp dive
> to oblivion. This gives me a 450 kHz running bandwidth and a 350 running
> bandwidth, which I can shift in 10 Hz steps, dropping a signal on the edge
> about 10 dB per 10 Hz step.
>
> This way I get the same excellent selectivity with a K3 that I had with my
> MP with cascaded INRAD filters in the 8 and 455 IF's. K3 is not superior to
> the MP in selectivity or audio quality, but the K3 front end and low noise
> opened up a new layer on 40 meters, going down past the DL and OK basement
> noodle QRP stations and exposing the RUSSIAN basement noodle QRP stations.
>
> We thought that was band crap listening to the MP, but turned out to be RX
> IMD, RX noise crap generated by the MP. Finally exposed by not being there
> in the K3.
>
> If my skirts do NOT dive maximally, then the 15 kW Italian is going to pump
> the K3's hardware AGC and make copy of my basement noodle QRP stations
> impossible.
>
> I do know those (so far all in the western US) who insist that the DSP
> selectivity is all they need. They might be right, out where they are.
>
> Idaho is not exactly the land of monster signals. If one really wants to do
> "full body CW" out there, a 700 Hz roofer would be a better choice to be in
> front of the DSP. Do you really want your AGC pumped by the next two or
> three stations above and below your frequency?
>
> I've spent my time with radios with too-wide high IF selectivity. NEVER
> AGAIN.
>
> Besides, having the steep diving combined selectivity converts key clicks
> to spikes, which the K3 NB and AGC circuits handle splendidly, allowing key
> click elimination, another K3 advantage trying to keep a run frequency 400
> Hz from a 45 over S9 15 kW Italian station.
>
> You think I'm kidding about 15 kW and 4 elements on 40m? Think again. Not
> kidding about 45 over 9 on a calibrated K3 S meter either. Though we *were*
> listening on a five element wide spaced (190 feet end to end) 40m quad.
>
> 73, Guy K2AV
>
>
>
> On Mon, Sep 19, 2016 at 9:21 PM, WILLIE BABER 
> wrote:
>
> > Hello All,
> >
> > I did M/M with a big station in the NW running Icom 7700.  Needless to
> say
> > comparison between K3 (one was on site) versus Icom radios came into
> > discussion during rest periods.  Yes, the Icom 7700 played quite well,
> > giving what some called "full-body" cw and easy to pick-out-stations
> while
> > running them.
> >
> > I like all radios...well almost all of them.  Having said that, you can
> > easily get "full-body" cw and better running of station if you simulate
> the
> > front-end of the Icom radio using K3.  To do this, set the first I-F
> filter
> > to ssb bandwidth (2.7khz) and then use the DSP to deliver 500 hz
> passband.
> > You will hear stations that are within the 2.7khz window but not quite on
> > your frequency (similar to 7700) while running stations, and without
> having
> > to fool so often with RIT.
> >
> > Once you go to 400 hz  in the first  I-F of K3 you are in serious high
> > dynamic range territory...better have a k-pod on RIT and forget about
> > "full-body" cw, which requires a wider first I-F.  Of course when you
> need
> > a narrow first I-F you can have several of them in K3.
> >
> > My two cents.
> >
> > 73, Will, wj9b
> >
> > CWops #1085
> > CWA Advisor levels II and III
> > http://cwops.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

[Elecraft] K3s USB com port issue

[Howard Sherer]

I have delayed posting this as I was hoping that I would see the same issue
posted by another user.



I am running a K3s and the issue is with the USB com port. First, the com
port assignment is com 27 which seems strange for my simple PC set up. I
have tried to go into the Windows control panel and change it to a lower #
available port, but it will not take, but this is not the issue.



My problem is that the com port will sometimes be recognized by the K3
utility or other programs as either 9600 or 38400 baud on a totally random
basis. If I connect at 9600 the K3s will after a while change its port rate
to 38400 and I have to close the program that I am using and re start it at
38400. This will work fine for a while until the K3s then resets it baud
rate again to 9600 and I have to re start the program that I am using.



Using programs like WSJT-X which now has rig control is very frustrating
and I usually just turn off the rig control and use the com 27 only for ptt
control. I have even had issues while using WSJT-X and the rig control,
that will change the K3s com port to a new baud rate between Rx & Tx
transitions.



Are there any suggestions out there? I only have a PC in the shack and
can’t try another PC. Is this a K3 issue of something with my PC?



Thanks,

Howard AE3T
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Re: [Elecraft] Running stations with k3

[Jim Brown]

For one thing, you would hear more clicks with the broader filter. You 
would, of course, also hear MORE signals.


73, Jim K9YC

On Tue,9/20/2016 2:08 PM, Matt Murphy wrote:

Can anyone explain why zero beat CW would sound more "full bodied" with a
2.7 KHz IF than with, say, a 400 Hz IF bandwidth?



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Re: [Elecraft] Anti-static Pads

[Richard Fjeld]

G=1/R as I remember it.

Yes, I wanted to reply to Alan's method, but I have been away.  I wanted 
to re-read it to see if he allowed time to determine if a cap was leaky 
first.  It was a clever idea.  I have two Simpson's so I should be able 
to duplicate the test, if I can round up exposed metal pans.

I bought my anti-static mat online.  I'm at a loss concerning specs.  I 
file everything, but after doing so for more than 50 years, things 
aren't found quickly.  I don't remember receiving specs, either.

Static discharge is an on-going concern for me. I humidify in the 
winter, and try to stay around 40%.  I keep a grounded wrist-band around 
a tin breath mint container on the table beside my recliner for watching 
TV.  When I stand up, I touch the tin to discharge myself. Otherwise, I 
zap my video equipment. Humidifying helps, but it's no guarantee.

At my workbench, I have a four outlet metal box that is grounded so that 
I can touch it regularly to bleed off any static build-up.  I can be 
'sure' that it is grounded, but I have to 'trust' that my wrist strap 
and anti-static mat are.   Maybe I'm a 'belt and suspenders' type of guy.

Dick, n0ce



On 9/20/2016 12:41 PM, Fred Jensen wrote:
> Simplest way I know: Conductivity = 1 / Resistance. All you need is a 
> slide rule. :-)  But seriously,
>
> Alan's method ... charge a capacitor to a known voltage, discharge it 
> through the mat to a lower voltage measuring how long it takes, and 
> use the RC time constant to calculate the resistance ... is about the 
> simplest and maybe the most ingenious.
>
> 73,
>
> Fred K6DGW
> - Sparks NV DM09dn

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Re: [Elecraft] Running stations with k3

[Matt Murphy]

Interesting!

Can anyone explain why zero beat CW would sound more "full bodied" with a
2.7 KHz IF than with, say, a 400 Hz IF bandwidth?  It would seem that the
CW signal was typically narrower than either one, so there would not be any
information lost on a zero beat signal.

Is there some sort of audio harmonic that exists only when the IF bandwidth
is sufficiently wide?   Or could the wider bandwidth effectively change the
perceived audio impact of AGC (depending on band noise)?

Is there a measurement of the distortion introduced by an IF filter across
both the signal *and* the noise?  I think noise sounds better (smoother?)
with a wider IF filter bandwidth.  Of course, the purpose of the narrower
filter is to reduce IMD from nearby signals, not to make noise sound
pleasant.

I'm curious if anyone has thoughts or insights about any of the above...

73,
Matt NQ6N


On Tue, Sep 20, 2016 at 11:45 AM, Guy Olinger K2AV 
wrote:

> The killer for that wide roofer approach is that loud enough stations can
> pump the hardware AGC before the signal gets to the DSP.
>
> The "full body" (whatever that means) CW technique will NOT work in a DX
> test I've been in (Will knows where) with that 45 over S9 Italian station
> running 15 kW and a 4 element beam on 40m pointed at the US when the band
> is wide open, and who has parked 400 Hz above or below me, AND I am trying
> to copy an S0 (if even that strong) basement noodle antenna QRP station.
>
> I want the skirts of the roofing filter and the DSP to COINCIDE and when I
> hit the edge of the 450 or 350 Hz, I want the skirts do a VERY sharp dive
> to oblivion. This gives me a 450 kHz running bandwidth and a 350 running
> bandwidth, which I can shift in 10 Hz steps, dropping a signal on the edge
> about 10 dB per 10 Hz step.
>
> This way I get the same excellent selectivity with a K3 that I had with my
> MP with cascaded INRAD filters in the 8 and 455 IF's. K3 is not superior to
> the MP in selectivity or audio quality, but the K3 front end and low noise
> opened up a new layer on 40 meters, going down past the DL and OK basement
> noodle QRP stations and exposing the RUSSIAN basement noodle QRP stations.
>
> We thought that was band crap listening to the MP, but turned out to be RX
> IMD, RX noise crap generated by the MP. Finally exposed by not being there
> in the K3.
>
> If my skirts do NOT dive maximally, then the 15 kW Italian is going to pump
> the K3's hardware AGC and make copy of my basement noodle QRP stations
> impossible.
>
> I do know those (so far all in the western US) who insist that the DSP
> selectivity is all they need. They might be right, out where they are.
>
> Idaho is not exactly the land of monster signals. If one really wants to do
> "full body CW" out there, a 700 Hz roofer would be a better choice to be in
> front of the DSP. Do you really want your AGC pumped by the next two or
> three stations above and below your frequency?
>
> I've spent my time with radios with too-wide high IF selectivity. NEVER
> AGAIN.
>
> Besides, having the steep diving combined selectivity converts key clicks
> to spikes, which the K3 NB and AGC circuits handle splendidly, allowing key
> click elimination, another K3 advantage trying to keep a run frequency 400
> Hz from a 45 over S9 15 kW Italian station.
>
> You think I'm kidding about 15 kW and 4 elements on 40m? Think again. Not
> kidding about 45 over 9 on a calibrated K3 S meter either. Though we *were*
> listening on a five element wide spaced (190 feet end to end) 40m quad.
>
> 73, Guy K2AV
>
>
>
> On Mon, Sep 19, 2016 at 9:21 PM, WILLIE BABER 
> wrote:
>
> > Hello All,
> >
> > I did M/M with a big station in the NW running Icom 7700.  Needless to
> say
> > comparison between K3 (one was on site) versus Icom radios came into
> > discussion during rest periods.  Yes, the Icom 7700 played quite well,
> > giving what some called "full-body" cw and easy to pick-out-stations
> while
> > running them.
> >
> > I like all radios...well almost all of them.  Having said that, you can
> > easily get "full-body" cw and better running of station if you simulate
> the
> > front-end of the Icom radio using K3.  To do this, set the first I-F
> filter
> > to ssb bandwidth (2.7khz) and then use the DSP to deliver 500 hz
> passband.
> > You will hear stations that are within the 2.7khz window but not quite on
> > your frequency (similar to 7700) while running stations, and without
> having
> > to fool so often with RIT.
> >
> > Once you go to 400 hz  in the first  I-F of K3 you are in serious high
> > dynamic range territory...better have a k-pod on RIT and forget about
> > "full-body" cw, which requires a wider first I-F.  Of course when you
> need
> > a narrow first I-F you can have several of them in K3.
> >
> > My two cents.
> >
> > 73, Will, wj9b
> >
> > CWops #1085
> > CWA Advisor levels II and III
> > http://cwops.org/
> > 

[Elecraft] I'll ask again

[Wes Stewart]

Could we please have VOX settings remembered by mode?

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Re: [Elecraft] [KX3] OT: AC wiring, grounds

[Jim Brown]

On Tue,9/20/2016 9:24 AM, Alan wrote:
I recently have been having extensive electrical renovation done on my 
early 60s era house.  We found wires spliced in the middle of a wall 
(3 different places), wrong wire sizes, a dead bat in the main meter 
panel, and my favorite:  a 220V circuit with each phase on a separate 
single breaker, which weren't even the same amperage!  :=) 


On Tue,9/20/2016 12:51 PM, Edward R Cole wrote:
My previous house was a homestead house built in 1955. 


The house I owned in Chicago was built before 1900 (after the great 
Chicago fire).  It was a "2-flat" with an undeveloped attic. When I 
bought it, it had knob and tube wiring, and pipe for gas lights, some of 
which was still active (connected to gas lines). Other gas lines were 
used to carry wiring to overhead lighting.


I hired electricians to bring the wiring up to code, installing a lot of 
EMT (steel thin-wall conduit), with separate conduit systems for power 
and low voltage wiring.


The house I bought in W6 had multiple wiring errors, some quite serious. 
I found only one bad outlet, but grounding for the main electrical 
service was a nightmare. "Ground" for the service entrance was a #14 
wire running 40-50 ft to a hose outlet, which was connected by PVC pipe 
to the water system. In other words, no ground at all. There's a 
detached garage with a "mother-in-law" apartment that is fed from the 
house. 240VAC with neutral and ground were carried to a panel in that 
building. A #14 bare copper ran up from the panel to the attic, across 
the building, then down to a ground rod, with the cable zig-zagging down 
the wall to tuck closely into a window frame and seams in the siding. 
I'd guess this wire was at least 60 ft long.  That was the only ground. 
In that second building, 240V was fed to a well and to appliances; 120V 
convenience outlets were wired between one leg of 240 (good) and ground 
(BAD!). BTW -- NONE of these problems were noted by the "inspector" we 
hired before buying the house.


It's worth studying my power and grounding tutorials, then carefully 
poking around your home. http://k9yc.com/GroundingAndAudio.pdf


73, Jim K9YC

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Re: [Elecraft] [KX3] OT: AC wiring, grounds

[Edward R Cole]

My previous house was a homestead house built in 1955.  It had three 
different foundations, a nearly flat roof, and the back half of the 
house wired with two conductor wiring (no U ground outlets).  I 
bought it in 1996 and FHA gave me a waver on the wiring and also a 
non-standard indoor door opening.  I did got thru the house to clear 
ground faults and found one dead outlet with wires burned away.  I 
trimmed/taped them and place a blank cover on that outlet.  Bathroom 
had no ground-fault outlets (another code violation) which I disabled 
to get wiring to pass inspection.  We sold it and moved in 2006.


Its because of these potential (no pun) errors in wiring that I do 
not recommend connecting your antistatic devices to the green safety 
ckt of the house wiring.  Absolute ground is not necessary; only that 
there is not voltage potential between components being 
installed.  Why I also suggest unhooking dc power leads to any PS 
during sensitive component work.


If you start checking outlets you may be in for surprise how few are 
correctly installed.  A simple plug in the outlet ckt tester will 
show ground faults (from Lowes or Home Depot for $12).  Best purchase 
for determining if outlets are hot.


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

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Re: [Elecraft] Portable Ops with KX3 along with KXPA100

[Jim Brown]

If you are in a very quiet location with antennas close to the Honda and 
haven't brought other noise sources to pollute your environment, you 
WILL want a serious common mode choke on the AC line. We use Honda 2000i 
with K3/KPA500 for our county expedition to a rare county for CQP 
(California QSO Party).  Noise sources include computers, monitors, wall 
warts, battery chargers, portable refrigerators, etc. We use no SMPS 
wall warts, and choke everything.


The length of AC cable between the Honda and the choke should be as 
short as possible. To get more turns through the choke, make a short 
jumper with the thinnest practical cable and use it to wind the choke. 
#14 indoor wiring cable or #14 appliance cable are a good choice. Wind 
the choke before installing the second connector. Follow the guidelines 
in Chapter 7 of k9yc.com/RFI-Ham.pdf for coax the size as the power 
cable you're using. Use larger diameter and close spaced turns to move 
the resonance lower.


73, Jim K9YC

On Tue,9/20/2016 11:53 AM, David Bunte wrote:

N9FN and I have operated portable in various state QSO parties using his
Honda EU2000 with no RF noise we could detect. We often used his KPA500 and
that generator handled it quite well.



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Re: [Elecraft] Portable Ops with KX3 along with KXPA100

[David Bunte]

Phil -

N9FN and I have operated portable in various state QSO parties using his
Honda EU2000 with no RF noise we could detect. We often used his KPA500 and
that generator handled it quite well.

The Honda 1KW unit is lighter and would certainly handle the gear you are
talking about.  I have heard reports that "some" folks experienced RFI with
that unit, and even some with the EU2000 but I believe any such problems
can probably be mitigated by physical separation and chokes. We are usually
about 20 feet from the generator and cannot hear it running from that
distance.

Best of luck.

Dave - K9FN

On Sep 20, 2016 12:50 PM, "Phil Hystad"  wrote:

> I use my KX3 primarily for operating portable at various locations,
> usually outside but not always.  Sometimes, I do have grid supplied power,
> most other times I do not.  Usually I operate using two LiFePo batteries
> which usually gives me all the QRP power I need for a few hours.
>
> But, I am considering QRO which to me means 100 watts and therefore I am
> thinking of buying a KXPA100.  But, where to plug in when there is no
> outlet.
>
> I could get more beefy LiFePo batteries but I am also considering a small
> portable generator.  I could use power from my pickup truck and I have done
> that before but I am not always within power cord length from the truck.
> So, I am thinking of a generator.
>
> Ideally I would like one that is RFI quiet and I have no idea if they
> exist as I have never operated off of a generator.  Something small (1 KW)
> and highly portable.
>
> Therefore:  can someone who has used such generators give a recommendation
> and also comment on whether RFI is a problem or not with these portable
> generators.  For example, Honda makes a 1600 watt model that looks
> reasonable (EU2000i).
>
> Thanks.
>
> 73, phil, K7PEH
>
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Re: [Elecraft] Running stations with k3

[Guy Olinger K2AV]

The killer for that wide roofer approach is that loud enough stations can
pump the hardware AGC before the signal gets to the DSP.

The "full body" (whatever that means) CW technique will NOT work in a DX
test I've been in (Will knows where) with that 45 over S9 Italian station
running 15 kW and a 4 element beam on 40m pointed at the US when the band
is wide open, and who has parked 400 Hz above or below me, AND I am trying
to copy an S0 (if even that strong) basement noodle antenna QRP station.

I want the skirts of the roofing filter and the DSP to COINCIDE and when I
hit the edge of the 450 or 350 Hz, I want the skirts do a VERY sharp dive
to oblivion. This gives me a 450 kHz running bandwidth and a 350 running
bandwidth, which I can shift in 10 Hz steps, dropping a signal on the edge
about 10 dB per 10 Hz step.

This way I get the same excellent selectivity with a K3 that I had with my
MP with cascaded INRAD filters in the 8 and 455 IF's. K3 is not superior to
the MP in selectivity or audio quality, but the K3 front end and low noise
opened up a new layer on 40 meters, going down past the DL and OK basement
noodle QRP stations and exposing the RUSSIAN basement noodle QRP stations.

We thought that was band crap listening to the MP, but turned out to be RX
IMD, RX noise crap generated by the MP. Finally exposed by not being there
in the K3.

If my skirts do NOT dive maximally, then the 15 kW Italian is going to pump
the K3's hardware AGC and make copy of my basement noodle QRP stations
impossible.

I do know those (so far all in the western US) who insist that the DSP
selectivity is all they need. They might be right, out where they are.

Idaho is not exactly the land of monster signals. If one really wants to do
"full body CW" out there, a 700 Hz roofer would be a better choice to be in
front of the DSP. Do you really want your AGC pumped by the next two or
three stations above and below your frequency?

I've spent my time with radios with too-wide high IF selectivity. NEVER
AGAIN.

Besides, having the steep diving combined selectivity converts key clicks
to spikes, which the K3 NB and AGC circuits handle splendidly, allowing key
click elimination, another K3 advantage trying to keep a run frequency 400
Hz from a 45 over S9 15 kW Italian station.

You think I'm kidding about 15 kW and 4 elements on 40m? Think again. Not
kidding about 45 over 9 on a calibrated K3 S meter either. Though we *were*
listening on a five element wide spaced (190 feet end to end) 40m quad.

73, Guy K2AV



On Mon, Sep 19, 2016 at 9:21 PM, WILLIE BABER  wrote:

> Hello All,
>
> I did M/M with a big station in the NW running Icom 7700.  Needless to say
> comparison between K3 (one was on site) versus Icom radios came into
> discussion during rest periods.  Yes, the Icom 7700 played quite well,
> giving what some called "full-body" cw and easy to pick-out-stations while
> running them.
>
> I like all radios...well almost all of them.  Having said that, you can
> easily get "full-body" cw and better running of station if you simulate the
> front-end of the Icom radio using K3.  To do this, set the first I-F filter
> to ssb bandwidth (2.7khz) and then use the DSP to deliver 500 hz passband.
> You will hear stations that are within the 2.7khz window but not quite on
> your frequency (similar to 7700) while running stations, and without having
> to fool so often with RIT.
>
> Once you go to 400 hz  in the first  I-F of K3 you are in serious high
> dynamic range territory...better have a k-pod on RIT and forget about
> "full-body" cw, which requires a wider first I-F.  Of course when you need
> a narrow first I-F you can have several of them in K3.
>
> My two cents.
>
> 73, Will, wj9b
>
> CWops #1085
> CWA Advisor levels II and III
> http://cwops.org/
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Re: [Elecraft] K3 - am I locked into a specific microcode level

[Nr4c]

Everything is backwards compatible. Features you don't have just won't work. 

Sent from my iPhone
...nr4c. bill


> On Sep 20, 2016, at 11:47 AM, Jim Miller  wrote:
> 
> I have not installed any of the K3S lookalike modules but was up to date
> with all the mods until then.  I remember seeing that I could not load some
> level unless I had the new synth boards.  I suspect I cannot load any more
> code updates after that.
> 
> 
> 
> Does the code yet recognize where I am and load the latest code applicable
> to my level?
> 
> 
> 
> Am I locked into a "latest level for my machine"?  
> 
> 
> 
> What is that level?  
> 
> 
> 
> Can I still get it if I am not totally up to date?
> 
> 
> 
> Love my machine - I (me, myself, only me, etc.) have made over 1
> contacts in the last 5 years of W6P Special Event 9 days periods and I am
> not a contest person.  This is my favorite event of all.  I actually cannot
> get on my radio very often and not for very long but do everything I can to
> play with my K3 as W6P during Route 66 On-The-Air.
> 
> 
> 
> 73, Jim KG0KP, K3 1442 since new
> 
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[Elecraft] OT: K2

[Eric J]

I had recently stopped monitoring the reflector as I only have a K1 and 
two K2's. Everything is K3 and subject lines rarely reflect that anymore 
so it's hard to filter them. But I had a K2 problem and rejoined. Got a 
response with solution within an hour! And discovered that I miss the OT 
discussions from a unique bunch of experts. Most of the OTs are 
interesting and more relevant to a non-KX/K3 owner. So I'm back to 
monitoring only OTs. hi.

The new products don't fill any need in my hamming that isn't satisfied 
by the K2, but the ongoing development of the state of ham art at 
Elecraft is extraordinary to see.

Eric KE6US

On 9/19/2016 8:05 PM, Ron D'Eau Claire wrote:
> P.S. Us K2 owners are rather quiet these days. I suspect few are still
> monitoring the reflector. I miss the many questions about soldering,
> testing, setting up an antenna, etc. But time, and products, moves on..
>

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Re: [Elecraft] Portable Ops with KX3 along with KXPA100

[Nr4c]

It runs on 13.8 volts. Any portable supply will work if it supports a standard 
100 watt transceiver like a K3 or TS 480. 


Sent from my iPhone
...nr4c. bill


> On Sep 20, 2016, at 12:48 PM, Phil Hystad  wrote:
> 
> I use my KX3 primarily for operating portable at various locations, usually 
> outside but not always.  Sometimes, I do have grid supplied power, most other 
> times I do not.  Usually I operate using two LiFePo batteries which usually 
> gives me all the QRP power I need for a few hours.
> 
> But, I am considering QRO which to me means 100 watts and therefore I am 
> thinking of buying a KXPA100.  But, where to plug in when there is no outlet.
> 
> I could get more beefy LiFePo batteries but I am also considering a small 
> portable generator.  I could use power from my pickup truck and I have done 
> that before but I am not always within power cord length from the truck.  So, 
> I am thinking of a generator.
> 
> Ideally I would like one that is RFI quiet and I have no idea if they exist 
> as I have never operated off of a generator.  Something small (1 KW) and 
> highly portable.
> 
> Therefore:  can someone who has used such generators give a recommendation 
> and also comment on whether RFI is a problem or not with these portable 
> generators.  For example, Honda makes a 1600 watt model that looks reasonable 
> (EU2000i).
> 
> Thanks.
> 
> 73, phil, K7PEH
> 
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Re: [Elecraft] Anti-static Pads

[Fred Jensen]

Simplest way I know: Conductivity = 1 / Resistance.  All you need is a 
slide rule. :-)  But seriously,


Alan's method ... charge a capacitor to a known voltage, discharge it 
through the mat to a lower voltage measuring how long it takes, and use 
the RC time constant to calculate the resistance ... is about the 
simplest and maybe the most ingenious.


73,

Fred K6DGW
- Sparks NV DM09dn

- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org

On 9/19/2016 8:32 PM, Richard Fjeld wrote:

I stand corrected.  I didn't realize the resistance was that great.

I need to think of a simple way to determine conductivity rather than
 measuring the resistance.

Thanks for the answers.

Dick, n0ce

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Re: [Elecraft] [KX3] OT: AC wiring, grounds

[Fred Jensen]

Perils of an old house.  Ours in Auburn CA was started in the mid-20's, 
added onto by everyone who lived there, including us ... twice.  With 
sheetrock gone, we found the reason why doors wouldn't close and windows 
were stuck--headers over them were spliced in the middle.


Barn out next to the pasture had 120V outlets with exposed wiring.  Feed 
from house was 2 aerial wires, 240V between them.  Finally figured out 
that the neutral was "ground," as in dirt.  The two "phase" conductors 
were spliced into separate 120V breakers in the service entrance.


73,

Fred K6DGW
- Sparks NV DM09dn

- Northern California Contest Club
- CU in the Cal QSO Party 1-2 Oct 2016
- www.cqp.org

On 9/20/2016 9:24 AM, Alan wrote:

I recently have been having extensive electrical renovation done on my
early 60s era house.  We found wires spliced in the middle of a wall (3
different places), wrong wire sizes, a dead bat in the main meter panel,
and my favorite:  a 220V circuit with each phase on a separate single
breaker, which weren't even the same amperage!  :=)

Alan N1AL


On 09/20/2016 08:43 AM, Ken G Kopp kengk...@gmail.com [KX3] wrote:



My house ... built mid-60's ... had "modern" 3-wire receptacles
throughout ... and was wired with single conductor "knob and tube"
wiring.  To add to the difficulty, the boxes were mounted halfway
between the studs on 1 x 3 boards.  Terrible rework required!


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[Elecraft] Portable Ops with KX3 along with KXPA100

[Phil Hystad]

I use my KX3 primarily for operating portable at various locations, usually 
outside but not always.  Sometimes, I do have grid supplied power, most other 
times I do not.  Usually I operate using two LiFePo batteries which usually 
gives me all the QRP power I need for a few hours.

But, I am considering QRO which to me means 100 watts and therefore I am 
thinking of buying a KXPA100.  But, where to plug in when there is no outlet.

I could get more beefy LiFePo batteries but I am also considering a small 
portable generator.  I could use power from my pickup truck and I have done 
that before but I am not always within power cord length from the truck.  So, I 
am thinking of a generator.

Ideally I would like one that is RFI quiet and I have no idea if they exist as 
I have never operated off of a generator.  Something small (1 KW) and highly 
portable.

Therefore:  can someone who has used such generators give a recommendation and 
also comment on whether RFI is a problem or not with these portable generators. 
 For example, Honda makes a 1600 watt model that looks reasonable (EU2000i).

Thanks.

73, phil, K7PEH

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Re: [Elecraft] K3s DSP headroom

[Jim Brown]

This is very good advice.  My TXEQ settings are similar -- I'm using 
more low cut and about half as much HF boost.


My friend Fred, K6DGW, has severe hearing loss, probably a result of his 
military service. Knowing my experience in pro audio, he asked my advice 
for his K3. I recommended RXEQ settings with extreme low cut below about 
800 Hz and extreme boost above that frequency. He says it works well for 
him. His hearing loss is so severe that he probably would not hear 
distortion if it were present.


73, Jim K9YC

On Tue,9/20/2016 6:26 AM, Joe Subich, W4TV wrote:

On 9/20/2016 7:59 AM, brian wrote:
> I seem to recall this advice (from Elecraft?):

Use the attenuation sides of the equalizers and not the gain side if
at all possible.


Yes, this came from Lyle, KK7P who designed the DSP.

> This begs the question.  If gain is bad to use, then why is it (up to
> +16 db) included as a choice.  Why not limit it to some small value?

His commend was not to use large values of boost across the passband.
one band of significant boost should not be an issue unless it is in
the middle of the passband.  For example, I have experimented with
some rather aggressive high frequency boost profiles (-16, -16, -6,
0, 0, 6, 10, 12) without apparent problem but aggressive mid-range
boost (-16, -16, 0, 10, 10, 10, 13, 15, 16) results in obvious
distortion. 



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Re: [Elecraft] [KX3] OT: AC wiring, grounds

[Alan]

I recently have been having extensive electrical renovation done on my 
early 60s era house.  We found wires spliced in the middle of a wall (3 
different places), wrong wire sizes, a dead bat in the main meter panel, 
and my favorite:  a 220V circuit with each phase on a separate single 
breaker, which weren't even the same amperage!  :=)


Alan N1AL


On 09/20/2016 08:43 AM, Ken G Kopp kengk...@gmail.com [KX3] wrote:



My house ... built mid-60's ... had "modern" 3-wire receptacles
throughout ... and was wired with single conductor "knob and tube"
wiring.  To add to the difficulty, the boxes were mounted halfway
between the studs on 1 x 3 boards.  Terrible rework required!

No idea how it passed inspection for the loan!  (;-)

73

K0PP


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Re: [Elecraft] K3 - am I locked into a specific microcode level

[Jack Brindle]

This is not true. The K3/K3S firmware is designed to determine which modules 
are installed in your K3/K3S and
use what it finds. There is no “lock-in”, you can use the latest code in your 
K3 (as I and many others do). To
put it another way, we did not obsolete the K3. It is  great radio and 
continues to improve with each firmware
release.

Jack Brindle, W6FB

> On Sep 20, 2016, at 8:47 AM, Jim Miller  wrote:
> 
> I have not installed any of the K3S lookalike modules but was up to date
> with all the mods until then.  I remember seeing that I could not load some
> level unless I had the new synth boards.  I suspect I cannot load any more
> code updates after that.
> 
> 
> 
> Does the code yet recognize where I am and load the latest code applicable
> to my level?
> 
> 
> 
> Am I locked into a "latest level for my machine"?  
> 
> 
> 
> What is that level?  
> 
> 
> 
> Can I still get it if I am not totally up to date?
> 
> 
> 
> Love my machine - I (me, myself, only me, etc.) have made over 1
> contacts in the last 5 years of W6P Special Event 9 days periods and I am
> not a contest person.  This is my favorite event of all.  I actually cannot
> get on my radio very often and not for very long but do everything I can to
> play with my K3 as W6P during Route 66 On-The-Air.
> 
> 
> 
> 73, Jim KG0KP, K3 1442 since new
> 
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[Elecraft] K3 - am I locked into a specific microcode level

[Jim Miller]

I have not installed any of the K3S lookalike modules but was up to date
with all the mods until then.  I remember seeing that I could not load some
level unless I had the new synth boards.  I suspect I cannot load any more
code updates after that.

 

Does the code yet recognize where I am and load the latest code applicable
to my level?

 

Am I locked into a "latest level for my machine"?  

 

What is that level?  

 

Can I still get it if I am not totally up to date?

 

Love my machine - I (me, myself, only me, etc.) have made over 1
contacts in the last 5 years of W6P Special Event 9 days periods and I am
not a contest person.  This is my favorite event of all.  I actually cannot
get on my radio very often and not for very long but do everything I can to
play with my K3 as W6P during Route 66 On-The-Air.

 

73, Jim KG0KP, K3 1442 since new

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[Elecraft] OT: AC wiring, grounds

[Ken G Kopp]

My house ... built mid-60's ... had "modern" 3-wire receptacles throughout
... and was wired with single conductor "knob and tube" wiring.  To add to
the difficulty, the boxes were mounted halfway between the studs on 1 x 3
boards.  Terrible rework required!

No idea how it passed inspection for the loan!  (;-)

73

K0PP
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[Elecraft] KPA500 Max Pwr in StandBy

[Jack Satterfield]

I just read in the KPA500 manual not to exceed 100W in StandBy mode

Woops.I sometimes run 150W to 200W digital when connecting to Winlink with
KPA500 in StandBy

I won't do it again will limit to 100W However, curious if anyone know why
the limitation to 100 watts?

 

Thanks,

Jack

W4GRJ

 

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[Elecraft] Ref: Noise on K3 When keyed

[Louis Ives]

Thanks to all who replied to my call for help on my problem with noise on 
transmit on my upgraded K-3.  I found the problem to be the way my external 
speaker was connected.  The new KI03B board didn't like the way I had it 
connected, I guess.  I still do not understand why it did't work the way I had 
it but when checking the new manual for the K3s I saw the way to connect and 
problem gone.  Thanks again!

PSent from my iPad
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Re: [Elecraft] DSP/Audio upgrade for K3

[Bruce Beford]

The FAQ for the K3s indicated that these K3S DSP boards "May be available
later in 2016..." for use as a retrofit to the K3. I think key word there
being "may". I would expect that once production needs are fully met and
excess becomes available they will be offered as an upgrade for the K3. I
also expect it will be fairly expensive, as this is not just a simple update
to the original K3 DSP board as the older upgrade was.

73,
Bruce N1RX


Grant wrote:
"The K3DSPUPGD is the Rev D upgrade for earlier K3's, which I've had for a
long time (well, actually a Rev C with the LPF board).

The upgrade I'm referring to is the the K3S DSP board (with updated audio
amps for reduced IMD).  When the K3S was announced, the indication was that
this newer board would be made available to K3 owners as an upgrade."

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Re: [Elecraft] Anti-static Pads

[Fred Moore]

The person who needs a piece of you mind is the Electrical Inspector who
didn't do his job Fred


On 9/20/16 10:37 AM, Terry Schieler wrote:
> Don wrote,
>
>  your house.  You can use a banana plug in the round pin of an electrical 
> receptacle, but before you trust it, get one of the receptacle testers and 
> make sure that green wire ground is intact - some are not.>
>
> I built a new home in 1996.  After living there a few years I noticed an 
> intermittent issue with an outlet on the first floor.  Upon opening up the 
> outlet box I discovered the green "safety ground" coiled up, disconnected in 
> the back of the box.  I fixed that.  Then I used a receptacle tester to 
> confirm the other outlets.  All the outlets but three on the first floor had 
> the disconnected green wire stuffed into the back of the box.  I spent a 
> weekend making them safe again.  All outlets in the rest of the house were 
> fine.  
> Hearing my experience, most people say "man I hope you gave your builder a 
> piece of your mind".  I was unable to do that as he was in federal prison at 
> the time... for fraud.  Every dog has his day.
>
> Check your receptacles.  
>
> Terry, WØFM
>
>
>
> -Original Message-
> From: Don Wilhelm [mailto:donw...@embarqmail.com] 
> Sent: Monday, September 19, 2016 3:59 PM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Anti-static Pads
>
> Hi all,
>
> While I can state that Ron's comment about the K2 is typically true, the 
> static tolerance of thru-hole ICs and transistors is lower than it was back 
> in 1998 or even 2006 (OK, I picked those years as a guess).  Many DIP mounted 
> devices are really SMD devices with DIP leads and can be as static sensitive 
> as the devices in the K3 and KX3.
> Despite the "touch grounded metal" instruction in the K2 manual, I do see 
> some repairs come in with failed firmware ICs, and rarely, but not zero, some 
> 'normal' ICs on a new build.
> My best guess is that those parts were damaged due to a static charge.
> Whether the builder did not follow the "touch a metal ground" or not I cannot 
> tell, all I know is that it failed.
>
> When possible, use an anti-static mat and wrist strap when handling ICs and 
> transistors, especially during periods of low humidity.  Do not work on 
> carpet without them and do not wear nylon clothing - and don't shuffle your 
> feet on the floor while working.
> The minimum should be a wrist strap connected to the green-wire ground in 
> your house.  You can use a banana plug in the round pin of an electrical 
> receptacle, but before you trust it, get one of the receptacle testers and 
> make sure that green wire ground is intact - some are not.
>
>
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-- 
Fred Moore
email: f...@fmeco.com
   f...@safes.com
phone:  321-217-8699

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Re: [Elecraft] Anti-static Pads

[Terry Schieler]

Don wrote,



I built a new home in 1996.  After living there a few years I noticed an 
intermittent issue with an outlet on the first floor.  Upon opening up the 
outlet box I discovered the green "safety ground" coiled up, disconnected in 
the back of the box.  I fixed that.  Then I used a receptacle tester to confirm 
the other outlets.  All the outlets but three on the first floor had the 
disconnected green wire stuffed into the back of the box.  I spent a weekend 
making them safe again.  All outlets in the rest of the house were fine.  
Hearing my experience, most people say "man I hope you gave your builder a 
piece of your mind".  I was unable to do that as he was in federal prison at 
the time... for fraud.  Every dog has his day.

Check your receptacles.  

Terry, WØFM



-Original Message-
From: Don Wilhelm [mailto:donw...@embarqmail.com] 
Sent: Monday, September 19, 2016 3:59 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Anti-static Pads

Hi all,

While I can state that Ron's comment about the K2 is typically true, the static 
tolerance of thru-hole ICs and transistors is lower than it was back in 1998 or 
even 2006 (OK, I picked those years as a guess).  Many DIP mounted devices are 
really SMD devices with DIP leads and can be as static sensitive as the devices 
in the K3 and KX3.
Despite the "touch grounded metal" instruction in the K2 manual, I do see some 
repairs come in with failed firmware ICs, and rarely, but not zero, some 
'normal' ICs on a new build.
My best guess is that those parts were damaged due to a static charge.
Whether the builder did not follow the "touch a metal ground" or not I cannot 
tell, all I know is that it failed.

When possible, use an anti-static mat and wrist strap when handling ICs and 
transistors, especially during periods of low humidity.  Do not work on carpet 
without them and do not wear nylon clothing - and don't shuffle your feet on 
the floor while working.
The minimum should be a wrist strap connected to the green-wire ground in your 
house.  You can use a banana plug in the round pin of an electrical receptacle, 
but before you trust it, get one of the receptacle testers and make sure that 
green wire ground is intact - some are not.


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[Elecraft] Pig Knob Sold

[Dave Cole]

Hi,
The Pig Knob has sold pending funds...
-- 
73's, and thanks,
Dave (NK7Z)
For software/hardware reviews see:
http://www.nk7z.net

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Re: [Elecraft] DSP/Audio upgrade for K3

[w4sc]

The upgrade DSP (K3DSPUPGD) is not the board being referenced.  

Here is link to the information as to status and boards offered for use in K3.

http://www.elecraft.com/manual/K3S-FAQ%20rev%20C9.pdf

Ben W4SC
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Re: [Elecraft] K3s DSP headroom

[Joe Subich, W4TV]

On 9/20/2016 7:59 AM, brian wrote:
> I seem to recall this advice (from Elecraft?):

Use the attenuation sides of the equalizers and not the gain side if
at all possible.


Yes, this came from Lyle, KK7P who designed the DSP.

> This begs the question.  If gain is bad to use, then why is it (up to
> +16 db) included as a choice.  Why not limit it to some small value?

His commend was not to use large values of boost across the passband.
one band of significant boost should not be an issue unless it is in
the middle of the passband.  For example, I have experimented with
some rather aggressive high frequency boost profiles (-16, -16, -6,
0, 0, 6, 10, 12) without apparent problem but aggressive mid-range
boost (-16, -16, 0, 10, 10, 10, 13, 15, 16) results in obvious
distortion.

73,

   ... Joe, W4TV

On 9/20/2016 7:59 AM, brian wrote:

I seem to recall this advice (from Elecraft?):
Use the attenuation sides of the equalizers and not the gain side if at
all possible.

This begs the question.  If gain is bad to use, then why is it (up to
+16 db) included as a choice.  Why not limit it to some small value?

It would seem this area is ripe for some real measurements.

73 de Brian/K3KO

On 9/20/2016 11:02 AM, Ramon Tristani wrote:

Important question. Could the designer from Elecraft please answer?



Sent from my iPhone


On Sep 20, 2016, at 6:12 AM, f1gwr  wrote:

Question for the K3s DSP programmer(s):

After reading the "audio" thread and trying to optimize my audio
equalizer, my questions are: what is the headroom over the 0 dB
equalizer? Or does the DSP has its own normalizer/AGC to avoid overload?

Found a satisfactory setting, with maximum values being set to 0 dB
in the voice band (300-3 k), and consequently have to turn the volume
halfway in a calm room (audio preset= high).

My concerns are:
- not clipping the AF while overflowing the DSP, namely registers
during calculations.
- getting enough AF gain so to have sufficient audio power especially
in noisy environments.

Said in another way what is in practice the maximum safe gain
settable in the equalizer?

VY 73,
Christian F1GWR in JN38SN
K3s groupie
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Re: [Elecraft] Noise when K-3 keyed

[Bill]

Monitors, Supplies, poorly constructed LED light supplies (built into bulbs)
in my personal experience are great sources of noise.  I find them easy to
figure out using my P3 when the level is low and then one by one eliminated
potential sources.  An LED lit TV used as a monitor is one of the low level
issues I have found.

73,
K9YEQ



-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken
Arck
Sent: Sunday, September 18, 2016 9:13 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Noise when K-3 keyed

I had the same problem - turned out to be noise from the computer (I was
using the USB CODEC for audio in/out to the computer).

Ken


At 06:41 PM 9/18/2016, Fred Jensen wrote:
>OK, this reply is to the list, lots of very smart and experienced folks
there.
>
>Let's see what others come up with given that additional info.  It 
>sounds to me like most if not all of the usual suspects are ruled out.
>
>73,
>
>Fred K6DGW
>Sparks NV USA
>Washoe County DM09dn
>
>On 9/18/2016 6:27 PM, Louis Ives wrote:
>>Thanks for the reply. The noise is there in all modes and I am using 
>>Vox but the noise is there even when I key with foot ptt.  I 
>>completely disconnected from the antenna system with same results. I 
>>tried with dummy load with same results. The noise almost sounds like 
>>what you would get with noise generator or other injected noise.
>>
>>>On Sep 18, 2016, at 9:12 PM, Fred Jensen 
>>>wrote:
>>>
>>>Hmmm ... first thought would be RF in undesirable places.
>>>
>>>1.  How are you asserting PTT?  Foot or other switch, or VOX?
>>>
>>>2.  If it's not VOX, is it really as soon as you press the switch, or 
>>>does it start as soon as you talk [which can often be almost 
>>>simultaneous]?  FWIW:  I once had a colleague who couldn't master 
>>>"point and click."  His mode was click and then point at what he 
>>>wanted.  Push then Talk totally eluded him. :-)
>>>
>>>3.  What happens in CW mode?
>>>
>>>The K3 makes no RF in TX test, a big clue.  Give us a few more 
>>>tidbits of info, like your antenna situation, actions into a dummy 
>>>load if you have one, etc.  I'm sure you'll get a lot of help here.
>>>
>>>73,
>>>
>>>Fred K6DGW Sparks NV USA Washoe County DM09dn
>
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--
President and CTO - Arcom Communications Makers of repeater controllers and
accessories.
http://www.arcomcontrollers.com/
Authorized Dealers for Kenwood and Telewave and we offer complete repeater
packages!
AH6LE/R - IRLP Node 3000
http://www.irlp.net
"We don't just make 'em. We use 'em!"

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Re: [Elecraft] DSP/Audio upgrade for K3

[GRANT YOUNGMAN]

The K3DSPUPGD is the Rev D upgrade for earlier K3’s, which I’ve had for a long 
time (well, actually a Rev C with the LPF board).

The upgrade I’m referring to is the the K3S DSP board (with updated audio amps 
for reduced IMD).  When the K3S was announced, the indication was that this 
newer board would be made available to K3 owners as an upgrade.

Grant


> On Sep 20, 2016, at 3:37 AM, Barry Simpson  wrote:
> 
> Hi Grant
> 
> It is the K3DSPUPGD board. It is buried away but only on the Spare Parts and 
> Mod Kits page on the Elecraft website. I got one a few months ago when I 
> upgraded my K3 with all the other new boards as well.
> 
> 
> 
> On 20 September 2016 at 10:19, GRANT YOUNGMAN  > wrote:

> Anyone ever heard a fact or rumor (or conspiracy theory related to 
> chemtrails) about what happened to the early advertised DSP board upgrade for 
> the K3 that included the new low distortion AF amp in the K3S??
> 
> It was announced as one of the upgrades that would be available for the K3.  
> Apparently still buried under the cone of silence … but it would be nice to 
> have some definitive answer from Elecraft one way or the other.
> 
> Grant NQ5T
> K3 #2091, KX3 #8342
> 

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Re: [Elecraft] K3s DSP headroom

[brian]

I seem to recall this advice (from Elecraft?):
Use the attenuation sides of the equalizers and not the gain side if at 
all possible.


This begs the question.  If gain is bad to use, then why is it (up to 
+16 db) included as a choice.  Why not limit it to some small value?


It would seem this area is ripe for some real measurements.

73 de Brian/K3KO

On 9/20/2016 11:02 AM, Ramon Tristani wrote:

Important question. Could the designer from Elecraft please answer?



Sent from my iPhone


On Sep 20, 2016, at 6:12 AM, f1gwr  wrote:

Question for the K3s DSP programmer(s):

After reading the "audio" thread and trying to optimize my audio equalizer, my 
questions are: what is the headroom over the 0 dB equalizer? Or does the DSP has its own 
normalizer/AGC to avoid overload?

Found a satisfactory setting, with maximum values being set to 0 dB in the 
voice band (300-3 k), and consequently have to turn the volume halfway in a 
calm room (audio preset= high).

My concerns are:
- not clipping the AF while overflowing the DSP, namely registers during 
calculations.
- getting enough AF gain so to have sufficient audio power especially in noisy 
environments.

Said in another way what is in practice the maximum safe gain settable in the 
equalizer?

VY 73,
Christian F1GWR in JN38SN
K3s groupie
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Re: [Elecraft] K3s DSP headroom

[Ramon Tristani]

Important question. Could the designer from Elecraft please answer?



Sent from my iPhone

> On Sep 20, 2016, at 6:12 AM, f1gwr  wrote:
> 
> Question for the K3s DSP programmer(s):
> 
> After reading the "audio" thread and trying to optimize my audio equalizer, 
> my questions are: what is the headroom over the 0 dB equalizer? Or does the 
> DSP has its own normalizer/AGC to avoid overload?
> 
> Found a satisfactory setting, with maximum values being set to 0 dB in the 
> voice band (300-3 k), and consequently have to turn the volume halfway in a 
> calm room (audio preset= high).
> 
> My concerns are:
> - not clipping the AF while overflowing the DSP, namely registers during 
> calculations.
> - getting enough AF gain so to have sufficient audio power especially in 
> noisy environments.
> 
> Said in another way what is in practice the maximum safe gain settable in the 
> equalizer?
> 
> VY 73,
> Christian F1GWR in JN38SN
> K3s groupie
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[Elecraft] K3s DSP headroom

[f1gwr]

Question for the K3s DSP programmer(s):

After reading the "audio" thread and trying to optimize my audio equalizer, my 
questions are: what is the headroom over the 0 dB equalizer? Or does the DSP 
has its own normalizer/AGC to avoid overload?

Found a satisfactory setting, with maximum values being set to 0 dB in the 
voice band (300-3 k), and consequently have to turn the volume halfway in a 
calm room (audio preset= high).

My concerns are:
- not clipping the AF while overflowing the DSP, namely registers during 
calculations.
- getting enough AF gain so to have sufficient audio power especially in noisy 
environments.

Said in another way what is in practice the maximum safe gain settable in the 
equalizer?

VY 73,
Christian F1GWR in JN38SN
K3s groupie
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Re: [Elecraft] Audio Ground Loop Isolation XFRMR?

[Edward R Cole]

I bought an ac line isolation transformer for my workbench at work 
some years ago.  The building had a horrendous ac line noise and 
ground faults which mgmt was not willing to pay to correct, so this 
got the test equipment grounds isolated to avoid discharges into open 
ckts when using test probes or solder iron.  Certainly not an ideal situation.


You should not use this solution at home (dangerous).  Fix your 
grounding system, instead.


Re: antistatic pads: best to use one in doubt.  But I would not 
connect anything to the green wire system.  I have antistatic solder 
station so know its safe, and always work on unpowered ckts - 
disconnected equipment wiring from PS.


That being said I have done considerable repair and assembly without 
a pad but using just a wrist strap.  Sometimes not even that.  I've 
gotten to know which devices one does not risk and those that appear 
more durable.  But I keep the devices in their antistatic bags until 
they are installed.  I touch my tools to chassis ground before 
picking the device up and immediately place the device into position 
for soldering - minimize handling, if possible.  RF power devices 
"seem" more durable than small-signal devices (but they are more 
expensive).  Always use antistatic pad/straps when installing preamp devices.


I detest synthetic clothes so that is not an issue -cotton for 
me.  Be careful of wool clothing.  I'm also lucky because our climate 
is usually humid.  Only in deep winter extreme cold will lower 
humidity to levels where you draw sparks from everything you touch - 
not a good time to build anything.  But if you sit down use 
antistatic devices and not get up walking around during your 
sensitive work it should be OK.  Best advice is to limit the duration 
of exposure for the device - beating the odds.


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

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Re: [Elecraft] XG3 Calibration from 10MHz Standard?

[Edward R Cole]

I've used the XG3 as signal source for testing/aligning VHF to mw 
gear and do not worry about its accuracy/stability.  Instead I use my 
EIP538 counter which is good to 26.5 GHz using either the internal 
TCXO or my Rb source into the counter reference port.  At turn-on the 
XG3 drifts quite a bit but after 20-min or so is slow enough for 
aligning Rx front ends.  I have some heated xtal signal sources that 
act the same way but operate at mw frequencies.


Its a fine piece of test equipment for its size/cost and generates 
useful signals up to 1296-MHz.  Above 200-MHz the output level is 
uncalibrated as you are using a harmonic of the output which will be 
lower level.  So not real accurate for testing receiver MDS, still it 
can make a ballpark test of a receiver (is it good, mediocre, or 
bad).  For HF thru 2m quite good for measurements.


If you do not have a counter its harder to check its frequency.  Good 
suggestions have already been made.  EIP538 is one of the best $500 
investments I've made.  HP141T is another.


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

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Re: [Elecraft] OT - JT65 on 2m

[Udo Langenohl - DK5YA]

Kjeld,

here's what you were looking for.

http://www.iaru-r1.org/index.php/spectrum-and-band-plans/vhf/2-meter

144.489 is a bad choice since this is the beacon allocation in Europe 
and region 1. Try 144.170 instead and find the DX guys at the ON4KST 
chat for skeds.


http://www.on4kst.com/chat/start.php

73 Udo, DK5YA

Am 19.09.2016 um 15:28 schrieb Kjeld Holm:

Dear Elecrafters,
After having a lot of DX and fun with WSJT-X on HF using JT65 I was about to
look for the possibilities of activating my 2m transverter in my K3.
WSJT-X suggests 144.489 but on the internet there are a lot of other
frequencies listed among others 144.076, 144.116, 144.160 and 144.120 MHz.
Having just a 4-element horizontal Yagi I will rather ask for advice than
spending a lot of time on empty frequencies.
Vy 73 de OZ1CCM, Kjeld


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Re: [Elecraft] DSP/Audio upgrade for K3

[Barry Simpson]

Hi Grant

It is the K3DSPUPGD board. It is buried away but only on the Spare Parts
and Mod Kits page on the Elecraft website. I got one a few months ago when
I upgraded my K3 with all the other new boards as well.

73

Barry Simpson  VK2BJ

On 20 September 2016 at 10:19, GRANT YOUNGMAN  wrote:

> Anyone ever heard a fact or rumor (or conspiracy theory related to
> chemtrails) about what happened to the early advertised DSP board upgrade
> for the K3 that included the new low distortion AF amp in the K3S??
>
> It was announced as one of the upgrades that would be available for the
> K3.  Apparently still buried under the cone of silence … but it would be
> nice to have some definitive answer from Elecraft one way or the other.
>
> Grant NQ5T
> K3 #2091, KX3 #8342
>
>
>
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