[Elecraft] [K3] DVR feature request for next firmware release

[Fabio IZ4AFW / NZ1W]

Hi guys,
   during contests I often use the K3 DVR in the auto-repeat mode.
I'd like to suggest an improvement, i.e. the possibility to adjust the
delay not in seconds but in tenths of a second.
That would allow a more precise repeat timer... sometimes you need to set
for example 2.5 seconds of delay, because 2 could be too fast and 3 too
slow.

Just my 2 cents for the next firmware release of a great radio!

Thanks,
Ciao 73
Fabio
  IZ4AFW / IO4W / NZ1W
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Re: [Elecraft] CW Skimmer/Soundcard Connection

[Arie Kleingeld PA3A]

Hi Mark,

Yes, if the skimmer is hooked up via audio, that's what will be decoded.
Line-out here is set to 10. Ok  in my case.

Experiment a bit withe the soundcard volume/level settings and it will 
work for you.


73
Arie PA3A

pastor...@verizon.net schreef op 10-4-2014 1:15:

Good Evening, I have just hooked up the Line Out on the back of the K3 to the 
Input of my Soundblaster USB Card. In the K3 Manual it talks about the Config. 
Line Out to set the level. What number should I be setting mine at? Also, I 
assume that if I use my filters that it will limit the number of signals that 
CW Skimmer will hear. Any help would be greatly apprreciated. Mark Griffin, KB3Z



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[Elecraft] Softrock Lite-40

[walter renner]

   Thanks to all that replied to my add, The Softrock Lite-40 has been sold.

 

Kusrst  K0ARO
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Re: [Elecraft] Configuring: KX3 --> KPA500 --> KAT500

[Phil Hystad]

I probably looked in the index and found nothing.  Something like that needs to 
be in the index.  I almost always use an index before looking at the table of 
contents when I search for something.  I am a believer in that an index is a 
rich information source (or should be) and should contain a lot more 
information than just page number look up such as cross references, 
associations, and even new information when it fits the content.

phil


On Apr 9, 2014, at 9:31 PM, Jim Bennett  wrote:

> It be on page 147 in my book. Figure 9.17 shows a complete 
> K3-->KPA500-->KAT500 setup. This is exactly how I've got mine set up. Nothing 
> in the index, but it is in the TOC in the front. :-)
> 
> Jim / W6JHB
> 
> 
> On   Wednesday, Apr 9, 2014, at  Wednesday, 9:25 PM, Phil Wheeler wrote:
> 
>> Surprising, because I couldn't find any mention of the KPA500 in his K3 book 
>> by searching the pdf version. Maybe I did a typo.
>> 
>> 73, Phil W7OX
>> 
>> On 4/9/14, 8:55 PM, Phil Hystad wrote:
>>> Jim,
>>> 
>>> I think you mentioned the Cady KX3 book to me on a previous similar 
>>> message.  If not, it was someone else.  But, at that time, I searched for 
>>> the diagram and could not find it.  Upon the message below I searched 
>>> again, page by page.  Finally found it.  Now, I looked in the 
>>> table-of-contents but for some strange reason I never saw that section on 
>>> the KX3 and KPA500.
>>> 
>>> I do have a Diamond CX-210 two-position switch.  I have a bunch of those in 
>>> my shack, also one 3 position.
>>> 
>>> 73, phil, K7PEH
>>> 
>>> 
>>> On Apr 9, 2014, at 7:29 PM, Jim Bennett  wrote:
>>> 
 phil,
 
 I'm doing exactly that - I have a KX3 and a K3 that share a KPA500, 
 KAT500, and several antennas. I went by the diagram in Fred Cady's book on 
 the KX3. Works like a charm. I can get up to 250 watts out with the KX3 
 driving the amp at 12 watts. And, no, I do not disconnect anything when I 
 want to use the KX3 with the amp and tuner. Just make sure that (1) the K3 
 is powered off if you are using the KX3, and (2) your coax switch 
 connecting the two radios to the amp has very good isolation. I'm using a 
 two position Daiwa coax switch at the moment.
 
 Let me know if you need more info. I've been using this configuration for 
 a few months now.
 
 Jim / W6JHB
 
 
 On   Wednesday, Apr 9, 2014, at  Wednesday, 4:23 PM, Phil Hystad wrote:
 
> I am planning on configuring my KX3 to use the KPA500 and the KAT500.  
> Has anyone done this and what did you need to do?  I already know how to 
> hook up the KX3 to the KPA500 but would like to hear from someone using 
> all three together.  In particular, connections between KPA500 and KAT500.
> 
> Also, follow up question -- if you have a configuration where you switch 
> KX3 and K3 driving the KPA500+KAT500 do you disconnect any K3 involved 
> AUX cables?  I presume you would run with the K3 powered off if you are 
> driving with a KX3.
> 
> Thanks,
> 
> 73, phil, K7PEH
>> 
> 

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Re: [Elecraft] Rotten Signals

[GRANT YOUNGMAN]

Part of the problem, I think, is that people have simply forgotten how to 
monitor their own signal, or never bothered to learn how.  It doesn’t matter if 
you’re using the latest DSP wizbang SSB radio or a Central Electronics 10A to 
transmit.  Listening to yourself on an IF level “audio” monitor, won’t tell you 
if you’re overdriving and flat topping in the amp.  Not likely that a P3 
monitor function — if it only displays signals from the K3 DSP — will help much 
in that regard either.  Compression and processing don’t necessarily cause a 
wide signal — but of course since the knob is there, if a little bit is good, 
then a whole lot MUST BE better .. or at least that’s clearly the view of many.

Every station needs a scope, and the only way to guarantee a clean signal (even 
if the K3 or radio du jour is generating a perfectly clean one in it’s DSP) is 
to use it properly to evaluate the RF going into the antenna, after the very 
last stage of that extra special 10KW contest amp … 

Grant NQ5T


On Apr 10, 2014, at 12:09 AM, Jim Brown  wrote:

> On 4/9/2014 6:56 PM, Milverton M. Swire wrote:
>> all the over active ALC, sprinkled with copious amount of Compression and 
>> marinated with an excessive amount of mic gain on any given contest weekend?
> 
> I put about 24 hours into WPX SSB a week or so ago, and the number of AWFUL 
> signals nearly outnumbered the number of clean ones. At least two dozen 
> times, I had to tell callers their audio was so bad that I couldn't copy 
> them. In every case, mic gain was turned up FAR, FAR too high, and so was 
> compression. There were dozens of stations calling CQ with audio so bad that 
> I couldn't copy their calls, let alone try to make an exchange.
> 
> This is PURELY a matter of STUPIDITY on the part of the operator (and perhaps 
> an unsportsmanly intent to produce splatter to keep other stations away from 
> their sidebands), and there's no excuse for it. Most modern rigs have a 
> monitor function lets the operator listen to his transmitted audio, and I'd 
> bet that many of those who sound the worst have another rig that the COULD 
> use to listen to their own RF signal.
> 
> 73, Jim K9YC

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Re: [Elecraft] Rotten Signals

[Eric Swartz WA6HHQ - Elecraft]

Time to close the thread in the interest of improving list Signal to noise 
ratio.

73,
Eric
List Moderator
elecraft.com
_..._

> On Apr 10, 2014, at 6:49 AM, GRANT YOUNGMAN  wrote:
> 
> Part of the problem, I think, is that people have simply forgotten how to 
> monitor their own signal, or never bothered to learn how.  
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[Elecraft] [P3] fatal error

[George Dubovsky]

OK, I just spent 2 hours as W1AW/4 on 40 cw and everything was working
fine. I changed bands and the P3 displayed:

FATAL ERROR
In: ddc_set_coef()
span=0

Press any active key to escape

But all keys are dead, so no escape from the black screen of death. Power
down/up does no change the message. Does anyone know what I'm up against
here? Oh, this P3 has the SVGA board installed which I am not using.

73,

geo - n4ua
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[Elecraft] [KX1] 1st QSO on KX1 #2794

[Matt VK2RQ]

I just made my first contact on my new KX1 with a VK5 about 700 miles away who 
was running a K3 -- the KX1 is indeed a very nice rig.

Initially I was getting about 2.7 W out on 40m and 3.2W out on 20m (13.8V 
supply, 50 ohm dummy load). I read in the manual that the output on 20m should 
normally be less that on 40m, and this can be achieved by compressing turns on 
the L2 inductor to adjust the LPF. I found that compressing turns on L2 reduced 
the output power on both bands, but 20m was still more output than 40m. By 
compressing the turns on the L1 inductor as well, 40m is now around 1.9W, and 
20m is around 1.8W, so overall power is reduced, but the 20m output is now 
below the 40m output. In the KXB3080 module kit which I haven't built yet, I 
think there are some resistors that can be swapped in for R11 and R30 to bring 
output power back up a bit. Is there anything else I can check to make sure the 
LPF is set up properly?

73, Matt VK2RQ


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[Elecraft] Curious -- why is KXFL3 roofing filter an option on KX3 ?

[Phil Hystad]

I have a curiosity question.  Why is the KXFL3 roofing filter an option on the 
KX3?  I mean, why is it not a built-in feature of the KX3?  First, I already 
own a KX3 with the KXFL3 filter so I am not asking this in order to choose to 
buy or not.  Caveat:  I am also a neophyte (philistine, ignorant, or 
troglodyte) in this sort of radio technology and still in learner mode.

But, it seems to me that the KXFL3 roofing filter is almost required with a 
radio as nice as the KX3.  Without it, as I understand the function, any 
crowded band interval like a pileup or close-in CW signals and such would 
render a KX3 (without the roofing filter) with less than the usual Elecraft 
stellar RX performance.

My guess, and this is only a wild guess, is that maybe the option leads this 
space open to future improved roofing filters?  Or, maybe even leave it open to 
a 3rd party market supplied filter (although, I think this filter is 
particularly different from other typical 3rd party filters).

73, phil, K7PEH



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Re: [Elecraft] Curious -- why is KXFL3 roofing filter an option on KX3 ?

[Wayne Burdick]

Hi Phil,

The roofing filter module (KXFL3) is expensive for us to manufacture because of 
the extremely tight tolerances on the capacitors (0.1% in some cases). They 
have to be matched by hand. 

We didn't want to pass this cost on to all KX3 users, since many of them don't 
require the roofing filters. Even without them, the KX3's receiver performance 
would fall into the top 6 or so radios as measured by Sherwood Engineering 
(http://www.sherweng.com/table.html).

73,
Wayne
N6KR


On Apr 10, 2014, at 7:56 AM, Phil Hystad  wrote:

> I have a curiosity question.  Why is the KXFL3 roofing filter an option on 
> the KX3?  I mean, why is it not a built-in feature of the KX3?  First, I 
> already own a KX3 with the KXFL3 filter so I am not asking this in order to 
> choose to buy or not.  Caveat:  I am also a neophyte (philistine, ignorant, 
> or troglodyte) in this sort of radio technology and still in learner mode.
> 
> But, it seems to me that the KXFL3 roofing filter is almost required with a 
> radio as nice as the KX3.  Without it, as I understand the function, any 
> crowded band interval like a pileup or close-in CW signals and such would 
> render a KX3 (without the roofing filter) with less than the usual Elecraft 
> stellar RX performance.
> 
> My guess, and this is only a wild guess, is that maybe the option leads this 
> space open to future improved roofing filters?  Or, maybe even leave it open 
> to a 3rd party market supplied filter (although, I think this filter is 
> particularly different from other typical 3rd party filters).
> 
> 73, phil, K7PEH



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[Elecraft] K3 and LDG Tuner question

[David Cole]

Hello all,

Now that the K3 is ordered, (6 more days till I get it, and counting), I
am getting things ready for it.  

I have an LDG AT-1000 PRO II tuner I used on my Icom Pro 3, post amp. 

There was a nice cable for the Icom, so that all I had to do was to hit
the tune button on the Icom, and it would force the LDG into tune mode,
using the Icom as a signal source...  Is there such a feature that can
be implemented on the K3 with the LDG AT-1000 PRO II tuner?

-- 
Thanks and 73's,
For equipment, and software setups and reviews see:
www.nk7z.net
for MixW support see;
http://groups.yahoo.com/neo/groups/mixw/info
for Dopplergram information see:
http://groups.yahoo.com/neo/groups/dopplergram/info
for MM-SSTV see:
http://groups.yahoo.com/neo/groups/MM-SSTV/info



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Re: [Elecraft] Curious -- why is KXFL3 roofing filter an option on KX3 ?

[Phil Hystad]

I figured cost was likely the main reason but then when I bought the KX3.  I do 
have another question on the KX3 but I need to study the technical aspects of 
the question first and maybe I can answer it myself (it has to do with the 
mixer).

phil


On Apr 10, 2014, at 8:02 AM, Wayne Burdick  wrote:

> Hi Phil,
> 
> The roofing filter module (KXFL3) is expensive for us to manufacture because 
> of the extremely tight tolerances on the capacitors (0.1% in some cases). 
> They have to be matched by hand. 
> 
> We didn't want to pass this cost on to all KX3 users, since many of them 
> don't require the roofing filters. Even without them, the KX3's receiver 
> performance would fall into the top 6 or so radios as measured by Sherwood 
> Engineering (http://www.sherweng.com/table.html).
> 
> 73,
> Wayne
> N6KR
> 
> 
> On Apr 10, 2014, at 7:56 AM, Phil Hystad  wrote:
> 
>> I have a curiosity question.  Why is the KXFL3 roofing filter an option on 
>> the KX3?  I mean, why is it not a built-in feature of the KX3?  First, I 
>> already own a KX3 with the KXFL3 filter so I am not asking this in order to 
>> choose to buy or not.  Caveat:  I am also a neophyte (philistine, ignorant, 
>> or troglodyte) in this sort of radio technology and still in learner mode.
>> 
>> But, it seems to me that the KXFL3 roofing filter is almost required with a 
>> radio as nice as the KX3.  Without it, as I understand the function, any 
>> crowded band interval like a pileup or close-in CW signals and such would 
>> render a KX3 (without the roofing filter) with less than the usual Elecraft 
>> stellar RX performance.
>> 
>> My guess, and this is only a wild guess, is that maybe the option leads this 
>> space open to future improved roofing filters?  Or, maybe even leave it open 
>> to a 3rd party market supplied filter (although, I think this filter is 
>> particularly different from other typical 3rd party filters).
>> 
>> 73, phil, K7PEH
> 
> 
> 

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Re: [Elecraft] Curious -- why is KXFL3 roofing filter an option on KX3 ?

[XE3/K5ENS]

Wayne,

So is the KX3's receiver performance as measured by Sherwood Engineering
with the optional filter?

Keith Ennis



--
View this message in context: 
http://elecraft.365791.n2.nabble.com/Curious-why-is-KXFL3-roofing-filter-an-option-on-KX3-tp7586967p7586971.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] Curious -- why is KXFL3 roofing filter an option on KX3 ?

[Wayne Burdick]

He measured it both ways. Both numbers are in the chart.

Wayne
N6KR

On Apr 10, 2014, at 8:29 AM, XE3/K5ENS  wrote:

> Wayne,
> 
> So is the KX3's receiver performance as measured by Sherwood Engineering
> with the optional filter?
> 
> Keith Ennis
> 
> 
> 
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/Curious-why-is-KXFL3-roofing-filter-an-option-on-KX3-tp7586967p7586971.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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[Elecraft] W6SFM 2014 Spring Bug Roundup event (An event for Bug Key users around the world!)

[ARRL - N6MQL]

*W6SFM On-Air BUG ROUNDUP - Saturday May 17th 2014*

*Objective: *
This 12-hour event is not a contest; rather it is a time dedicated to 
celebrating our CW and Bug key heritage. Participants are encouraged to 
get on the air and simply make enjoyable, conversational CW QSOs using a 
Bug style key as the sending instrument. There are no points scored in 
this event, and all who participate are winners.


Once the event has concluded, logs can be submitted to the W6SFM by way 
of the link provided on the clubs Bug Roundup web page. Nominal 
prizes/certificates will be awarded to: the person who had the most QSOs 
during the 12 hour period; and the person who worked the most 
interesting amount of bug types.


*Bands *(Suggested Freq.)
*10 meters* - 28.040 - 28.050 MHz
*15 meters* - 21.040 - 21.050 MHz
*20 meters* - 14.040 - 14.050 MHz
*40 meters* -7.040 - 7.050 MHz
*80 meters* -3.540 - 3.550 MHz

*Dates*
W6SFM Bug Roundup is held twice annually.
- Every 3rd Saturday in May from 1700 UTC though Sunday 0500 UTC
- Every 3rd Saturday in November from 1800 UTC through Sunday 0600 UTC


Thank you for your participation and we hope you enjoy the event. 73

For more information on this exciting event please visit the W6SFM Bug 
Roundup website page by clicking HERE 
(http://www.w6sfm.com/Bug_Roundup.html) 


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Re: [Elecraft] Rotten Signals

[george fritkin]

What a station needs is a good, considerate operator. 
 
George, W6GF
On Thursday, April 10, 2014 7:05 AM, GRANT YOUNGMAN  wrote:
  
Part of the problem, I think, is that people have simply forgotten how to 
monitor their own signal, or never bothered to learn how.  It doesn’t matter if 
you’re using the latest DSP wizbang SSB radio or a Central Electronics 10A to 
transmit.  Listening to yourself on an IF level “audio” monitor, won’t tell you 
if you’re overdriving and flat topping in the amp.  Not likely that a P3 
monitor function — if it only displays signals from the K3 DSP — will help much 
in that regard either.  Compression and processing don’t necessarily cause a 
wide signal — but of course since the knob is there, if a little bit is good, 
then a whole lot MUST BE better .. or at least that’s clearly the view of many.

Every station needs a scope, and the only way to guarantee a clean signal (even 
if the K3 or radio du jour is generating a perfectly clean one in it’s DSP) is 
to use it properly to evaluate the RF going into the antenna, after the very 
last stage of that extra special 10KW contest amp … 

Grant NQ5T



On Apr 10, 2014, at 12:09 AM, Jim Brown  wrote:

> On 4/9/2014 6:56 PM, Milverton M. Swire wrote:
>> all the over active ALC, sprinkled with copious amount of Compression and 
>> marinated with an excessive amount of mic gain on any given contest weekend?
> 
> I put about 24 hours into WPX SSB a week or so ago, and the number of AWFUL 
> signals nearly outnumbered the number of clean ones. At least two dozen 
> times, I had to tell callers their audio was so bad that I couldn't copy 
> them. In every case, mic gain was turned up FAR, FAR too high, and so was 
> compression. There were dozens of stations calling CQ with audio so bad that 
> I couldn't copy their calls, let alone try to make an exchange.
> 
> This is PURELY a matter of STUPIDITY on the part of the operator (and perhaps 
> an unsportsmanly intent to produce splatter to keep other stations away from 
> their sidebands), and there's no excuse for it. Most modern rigs have a 
> monitor function lets the operator listen to his transmitted audio, and I'd 
> bet that many of those who sound the worst have another rig that the COULD 
> use to listen to their own RF signal.
> 
> 73, Jim K9YC

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Re: [Elecraft] Curious -- why is KXFL3 roofing filter an option on KX3 ?

[Jim Bennett]

Hi Phil -

I've had my KX3 since Christmas of last year. Also have a fairly well 
decked-out K3. My KX3 does NOT have the optional KXFL3 roofing filter. However, 
in the time that I've had the KX3 and been able to compare it's receive 
performance to that of the K3 - I have to say that I don't see any need (in my 
case) for the added expense. Granted, I don't do that much contesting, although 
I have dipped my toes into a couple here and there, as I was trying to pick off 
a few states to close out my 5BWAS. I've also used the KX3 in a number of 
fairly big pileups and the little rig has performed very well. It would be nice 
to have two of them, just to be able to compare having or not having the 
roofing filter. I know that you can "turn it on or off" in the menu but that 
might not be a valid way to compare.

Anyway, I'm quite pleased with the receive performance of my KX3 w/o the filter.

Jim / W6JHB


On   Thursday, Apr 10, 2014, at  Thursday, 7:56 AM, Phil Hystad wrote:

> I have a curiosity question.  Why is the KXFL3 roofing filter an option on 
> the KX3?  I mean, why is it not a built-in feature of the KX3?  First, I 
> already own a KX3 with the KXFL3 filter so I am not asking this in order to 
> choose to buy or not.  Caveat:  I am also a neophyte (philistine, ignorant, 
> or troglodyte) in this sort of radio technology and still in learner mode.
> 
> But, it seems to me that the KXFL3 roofing filter is almost required with a 
> radio as nice as the KX3.  Without it, as I understand the function, any 
> crowded band interval like a pileup or close-in CW signals and such would 
> render a KX3 (without the roofing filter) with less than the usual Elecraft 
> stellar RX performance.
> 
> My guess, and this is only a wild guess, is that maybe the option leads this 
> space open to future improved roofing filters?  Or, maybe even leave it open 
> to a 3rd party market supplied filter (although, I think this filter is 
> particularly different from other typical 3rd party filters).
> 
> 73, phil, K7PEH
> 
> 
> 
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Re: [Elecraft] [P3] fatal error

[Alan Bloom]

Try doing the Parameter Initialization (see Troubleshooting section of 
P3 Owner's Manual.)  Basically you hold the LABELS key while turning on 
the power with the POWER key.


Alan N1AL


On 04/10/2014 07:27 AM, George Dubovsky wrote:

OK, I just spent 2 hours as W1AW/4 on 40 cw and everything was working
fine. I changed bands and the P3 displayed:

FATAL ERROR
In: ddc_set_coef()
span=0

Press any active key to escape

But all keys are dead, so no escape from the black screen of death. Power
down/up does no change the message. Does anyone know what I'm up against
here? Oh, this P3 has the SVGA board installed which I am not using.

73,

geo - n4ua
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[Elecraft] K2ssb

[John Cooper]

My k2ssb when u put in transmit the led bargraph doesn't light up as u talk.  
Tried switching to alc mode where it lights backwards still nothing.  My 
wattmeter shows I'm getting out though.  If it matters I have the last led in 
the bargraph set for zero beat.  It works on recieve just fine.  The op1 
filters work great but I seem to have lost my cw filters 2-4 they were fine 
before adding ssb option.  

John WT5Y


Sent from my Cricket smartphone
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Re: [Elecraft] Configuring: KX3 --> KPA500 --> KAT500

[Phil Wheeler]

It may depend on the edition you have. I have the 
2nd edition and page 147 relates to the KRX3 
subreceiver.


Phil W7OX

On 4/10/14, 6:26 AM, Phil Hystad wrote:
I probably looked in the index and found 
nothing.  Something like that needs to be in the 
index.  I almost always use an index before 
looking at the table of contents when I search 
for something.  I am a believer in that an index 
is a rich information source (or should be) and 
should contain a lot more information than just 
page number look up such as cross references, 
associations, and even new information when it 
fits the content.


phil


On Apr 9, 2014, at 9:31 PM, Jim Bennett 
mailto:w6...@mac.com>> wrote:


It be on page 147 in my book. Figure 9.17 shows 
a complete K3-->KPA500-->KAT500 setup. This is 
exactly how I've got mine set up. Nothing in 
the index, but it is in the TOC in the front. :-)


Jim / W6JHB


On   Wednesday, Apr 9, 2014, at  Wednesday, 
9:25 PM, Phil Wheeler wrote:


Surprising, because I couldn't find any 
mention of the KPA500 in his K3 book by 
searching the pdf version. Maybe I did a typo.


73, Phil W7OX

On 4/9/14, 8:55 PM, Phil Hystad wrote:

Jim,

I think you mentioned the Cady KX3 book to me on a previous similar message.  
If not, it was someone else.  But, at that time, I searched for the diagram and 
could not find it.  Upon the message below I searched again, page by page.  
Finally found it.  Now, I looked in the table-of-contents but for some strange 
reason I never saw that section on the KX3 and KPA500.

I do have a Diamond CX-210 two-position switch.  I have a bunch of those in my 
shack, also one 3 position.

73, phil, K7PEH


On Apr 9, 2014, at 7:29 PM, Jim Bennett  wrote:


phil,

I'm doing exactly that - I have a KX3 and a K3 that share a KPA500, KAT500, and 
several antennas. I went by the diagram in Fred Cady's book on the KX3. Works 
like a charm. I can get up to 250 watts out with the KX3 driving the amp at 12 
watts. And, no, I do not disconnect anything when I want to use the KX3 with 
the amp and tuner. Just make sure that (1) the K3 is powered off if you are 
using the KX3, and (2) your coax switch connecting the two radios to the amp 
has very good isolation. I'm using a two position Daiwa coax switch at the 
moment.

Let me know if you need more info. I've been using this configuration for a few 
months now.

Jim / W6JHB


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Re: [Elecraft] Curious -- why is KXFL3 roofing filter an option on KX3 ?

[Phil Wheeler]

I'd not have the KX3 without that option. But 
perhaps it would be just fine if not working CW.


Same with the K3: Some do buy it with only the 
standard 2.7 KHz filter, and no CW filters.


Phil W7OX

On 4/10/14, 7:56 AM, Phil Hystad wrote:

I have a curiosity question.  Why is the KXFL3 roofing filter an option on the 
KX3?  I mean, why is it not a built-in feature of the KX3?  First, I already 
own a KX3 with the KXFL3 filter so I am not asking this in order to choose to 
buy or not.  Caveat:  I am also a neophyte (philistine, ignorant, or 
troglodyte) in this sort of radio technology and still in learner mode.

But, it seems to me that the KXFL3 roofing filter is almost required with a 
radio as nice as the KX3.  Without it, as I understand the function, any 
crowded band interval like a pileup or close-in CW signals and such would 
render a KX3 (without the roofing filter) with less than the usual Elecraft 
stellar RX performance.

My guess, and this is only a wild guess, is that maybe the option leads this 
space open to future improved roofing filters?  Or, maybe even leave it open to 
a 3rd party market supplied filter (although, I think this filter is 
particularly different from other typical 3rd party filters).

73, phil, K7PEH


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Re: [Elecraft] Curious -- why is KXFL3 roofing filter an option on KX3 ?

[Phil Hystad]

Jim,

I don't do a lot of contesting but often will reply to contesting stations if 
they are DX or if they are from an unusual place for me (e.g. Rhode Island).  
But, with DX, and in particular when a DX station is popular such as the 
DXpeditions (e.g. TX6G) they will have a pileup (and, often operating split).  
I operate CW on all of these kinds of contacts so filtering to me is indeed 
important.  So, without thinking of the price, I bought the filter for the KX3 
in order to get the best they have to offer.

I have yet to chase any kind of DXCC or WAS award certificate.  I have no room 
on my walls for certificates so having such a thing means nothing to me as I 
know that I have worked all states for example (with the exception of Rhode 
Island but Rhode Island is smaller than some counties so I will pick that up if 
I decide to count counties).

phil


On Apr 10, 2014, at 8:48 AM, Jim Bennett  wrote:

> Hi Phil -
> 
> I've had my KX3 since Christmas of last year. Also have a fairly well 
> decked-out K3. My KX3 does NOT have the optional KXFL3 roofing filter. 
> However, in the time that I've had the KX3 and been able to compare it's 
> receive performance to that of the K3 - I have to say that I don't see any 
> need (in my case) for the added expense. Granted, I don't do that much 
> contesting, although I have dipped my toes into a couple here and there, as I 
> was trying to pick off a few states to close out my 5BWAS. I've also used the 
> KX3 in a number of fairly big pileups and the little rig has performed very 
> well. It would be nice to have two of them, just to be able to compare having 
> or not having the roofing filter. I know that you can "turn it on or off" in 
> the menu but that might not be a valid way to compare.
> 
> Anyway, I'm quite pleased with the receive performance of my KX3 w/o the 
> filter.
> 
> Jim / W6JHB
> 
> 
> On   Thursday, Apr 10, 2014, at  Thursday, 7:56 AM, Phil Hystad wrote:
> 
>> I have a curiosity question.  Why is the KXFL3 roofing filter an option on 
>> the KX3?  I mean, why is it not a built-in feature of the KX3?  First, I 
>> already own a KX3 with the KXFL3 filter so I am not asking this in order to 
>> choose to buy or not.  Caveat:  I am also a neophyte (philistine, ignorant, 
>> or troglodyte) in this sort of radio technology and still in learner mode.
>> 
>> But, it seems to me that the KXFL3 roofing filter is almost required with a 
>> radio as nice as the KX3.  Without it, as I understand the function, any 
>> crowded band interval like a pileup or close-in CW signals and such would 
>> render a KX3 (without the roofing filter) with less than the usual Elecraft 
>> stellar RX performance.
>> 
>> My guess, and this is only a wild guess, is that maybe the option leads this 
>> space open to future improved roofing filters?  Or, maybe even leave it open 
>> to a 3rd party market supplied filter (although, I think this filter is 
>> particularly different from other typical 3rd party filters).
>> 
>> 73, phil, K7PEH
>> 
>> 
>> 
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Re: [Elecraft] Softrock Lite-40

[Bob W7AVK]

At one time was going to use a Softrock lite-40 with my K3 to get the X 
Y audio channels required for various computer applications. Ended up 
getting an LP-Pan so never obtained the required crystal and completed 
the project.


For Sale, Original professional built Softrock lite-40 dongle, plug and 
play ready to 40 meters.Includes a crystal for 30 meters.


Asking $45 which includes postage.   Paypal OK

73  Bob  W7AVK
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Re: [Elecraft] Curious -- why is KXFL3 roofing filter an option on KX3 ?

[Phil Hystad]

Phil,

I concur -- in my second reply to Wayne, I truncated the first sentence (I 
think it was the first) and the result was not very meaningful.  I had 
originally written something like "...but then when I bought the KX3 I ignored 
the price as I really wanted the KX3".

I cut that out because I didn't want to let Wayne think that I would buy 
anything at any price -- well, maybe I would almost but I did really want the 
KX3 for portable ops.  Now, I am wondering if I should keep my KX1.  Oh, I will 
keep it but it is not being used anymore.

phil


On Apr 10, 2014, at 9:01 AM, Phil Wheeler  wrote:

> I'd not have the KX3 without that option. But perhaps it would be just fine 
> if not working CW.
> 
> Same with the K3: Some do buy it with only the standard 2.7 KHz filter, and 
> no CW filters.
> 
> Phil W7OX
> 
> On 4/10/14, 7:56 AM, Phil Hystad wrote:
>> I have a curiosity question.  Why is the KXFL3 roofing filter an option on 
>> the KX3?  I mean, why is it not a built-in feature of the KX3?  First, I 
>> already own a KX3 with the KXFL3 filter so I am not asking this in order to 
>> choose to buy or not.  Caveat:  I am also a neophyte (philistine, ignorant, 
>> or troglodyte) in this sort of radio technology and still in learner mode.
>> 
>> But, it seems to me that the KXFL3 roofing filter is almost required with a 
>> radio as nice as the KX3.  Without it, as I understand the function, any 
>> crowded band interval like a pileup or close-in CW signals and such would 
>> render a KX3 (without the roofing filter) with less than the usual Elecraft 
>> stellar RX performance.
>> 
>> My guess, and this is only a wild guess, is that maybe the option leads this 
>> space open to future improved roofing filters?  Or, maybe even leave it open 
>> to a 3rd party market supplied filter (although, I think this filter is 
>> particularly different from other typical 3rd party filters).
>> 
>> 73, phil, K7PEH
> 
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Re: [Elecraft] K3 and LDG Tuner question

[Dennis Moore]

I use LDG tuners here with my K3. No interface cable is needed, just the 
RF between the K3 and the LDG. When the LDG senses RF it will start to 
tune. Press and hold XMIT to start the tune process, tap it again when 
the LDG finds a match. I have both a 100 and 600 watt tuner, I always 
reduce the power out from the K3 before tuning although with these 
tuners I suspect it's not really necessary. The K3 reduces power on its 
own when the SWR is too high and will bring it back up by itself when 
the SWR falls below 3:1, so at least you're not slamming the LDG with 
high power when the match is way off.


73, Dennis NJ6G

On 4/10/2014 8:11 AM, David Cole wrote:

Hello all,

Now that the K3 is ordered, (6 more days till I get it, and counting), I
am getting things ready for it.

I have an LDG AT-1000 PRO II tuner I used on my Icom Pro 3, post amp.

There was a nice cable for the Icom, so that all I had to do was to hit
the tune button on the Icom, and it would force the LDG into tune mode,
using the Icom as a signal source...  Is there such a feature that can
be implemented on the K3 with the LDG AT-1000 PRO II tuner?



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Re: [Elecraft] Configuring: KX3 --> KPA500 --> KAT500

[Phil Hystad]

Phil,

The Cady book being referenced here is the KX3 book which is still first 
edition only as far as I know.  The K3 book is now in second edition.

phil

On Apr 10, 2014, at 8:53 AM, Phil Wheeler  wrote:

> It may depend on the edition you have. I have the 2nd edition and page 147 
> relates to the KRX3 subreceiver.
> 
> Phil W7OX
> 
> On 4/10/14, 6:26 AM, Phil Hystad wrote:
>> I probably looked in the index and found nothing.  Something like that needs 
>> to be in the index.  I almost always use an index before looking at the 
>> table of contents when I search for something.  I am a believer in that an 
>> index is a rich information source (or should be) and should contain a lot 
>> more information than just page number look up such as cross references, 
>> associations, and even new information when it fits the content.
>> 
>> phil
>> 
>> 
>> On Apr 9, 2014, at 9:31 PM, Jim Bennett  wrote:
>> 
>>> It be on page 147 in my book. Figure 9.17 shows a complete 
>>> K3-->KPA500-->KAT500 setup. This is exactly how I've got mine set up. 
>>> Nothing in the index, but it is in the TOC in the front. :-)
>>> 
>>> Jim / W6JHB
>>> 
>>> 
>>> On   Wednesday, Apr 9, 2014, at  Wednesday, 9:25 PM, Phil Wheeler wrote:
>>> 
 Surprising, because I couldn't find any mention of the KPA500 in his K3 
 book by searching the pdf version. Maybe I did a typo.
 
 73, Phil W7OX
 
 On 4/9/14, 8:55 PM, Phil Hystad wrote:
> Jim,
> 
> I think you mentioned the Cady KX3 book to me on a previous similar 
> message.  If not, it was someone else.  But, at that time, I searched for 
> the diagram and could not find it.  Upon the message below I searched 
> again, page by page.  Finally found it.  Now, I looked in the 
> table-of-contents but for some strange reason I never saw that section on 
> the KX3 and KPA500.
> 
> I do have a Diamond CX-210 two-position switch.  I have a bunch of those 
> in my shack, also one 3 position.
> 
> 73, phil, K7PEH
> 
> 
> On Apr 9, 2014, at 7:29 PM, Jim Bennett  wrote:
> 
>> phil,
>> 
>> I'm doing exactly that - I have a KX3 and a K3 that share a KPA500, 
>> KAT500, and several antennas. I went by the diagram in Fred Cady's book 
>> on the KX3. Works like a charm. I can get up to 250 watts out with the 
>> KX3 driving the amp at 12 watts. And, no, I do not disconnect anything 
>> when I want to use the KX3 with the amp and tuner. Just make sure that 
>> (1) the K3 is powered off if you are using the KX3, and (2) your coax 
>> switch connecting the two radios to the amp has very good isolation. I'm 
>> using a two position Daiwa coax switch at the moment.
>> 
>> Let me know if you need more info. I've been using this configuration 
>> for a few months now.
>> 
>> Jim / W6JHB
> 

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Re: [Elecraft] Configuring: KX3 --> KPA500 --> KAT500

[Phil Wheeler]

That's the confusion. I thought you meant the K3 
book (which seems a more logical place to have 
something, anything, on the KPA500). Now that I 
look I see the KX3 book does discuss using the KPA500.


73, Phil W7OX

On 4/10/14, 9:25 AM, Phil Hystad wrote:

Phil,

The Cady book being referenced here is the KX3 
book which is still first edition only as far as 
I know.  The K3 book is now in second edition.


phil

On Apr 10, 2014, at 8:53 AM, Phil Wheeler 
mailto:w...@socal.rr.com>> 
wrote:


It may depend on the edition you have. I have 
the 2nd edition and page 147 relates to the 
KRX3 subreceiver.


Phil W7OX

On 4/10/14, 6:26 AM, Phil Hystad wrote:
I probably looked in the index and found 
nothing.  Something like that needs to be in 
the index.  I almost always use an index 
before looking at the table of contents when I 
search for something.  I am a believer in that 
an index is a rich information source (or 
should be) and should contain a lot more 
information than just page number look up such 
as cross references, associations, and even 
new information when it fits the content.


phil


On Apr 9, 2014, at 9:31 PM, Jim Bennett 
mailto:w6...@mac.com>> wrote:


It be on page 147 in my book. Figure 9.17 
shows a complete K3-->KPA500-->KAT500 setup. 
This is exactly how I've got mine set up. 
Nothing in the index, but it is in the TOC in 
the front. :-)


Jim / W6JHB


On   Wednesday, Apr 9, 2014, at  Wednesday, 
9:25 PM, Phil Wheeler wrote:


Surprising, because I couldn't find any 
mention of the KPA500 in his K3 book by 
searching the pdf version. Maybe I did a typo.


73, Phil W7OX


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Re: [Elecraft] Configuring: KX3 --> KPA500 --> KAT500

[Phil Hystad]

The KPA500/KAT500 is a new book that Cady is producing and it will also have 
sections on configuring with KX3 (and, other transceivers of course).  I think 
the KX3 book though is more appropriate for connecting the KPA500/KAT500 with 
the KX3 as the connection strategy for the K3 is already covered in the KPA500 
guide and the KAT500 guide.

The main reason for new information on the KX3 and the reason for my question 
though is that I was not sure of how to do the connection setup when both the 
KPA500 and KAT500 are used together with the KX3 and also whether this could be 
done in a switched manner with the K3 and in this particular case the real 
unknown to me was dealing with the aux cable connections used with the K3.

phil, K7PEH


On Apr 10, 2014, at 9:40 AM, Phil Wheeler  wrote:

> That's the confusion. I thought you meant the K3 book (which seems a more 
> logical place to have something, anything, on the KPA500). Now that I look I 
> see the KX3 book does discuss using the KPA500.
> 
> 73, Phil W7OX
> 
> On 4/10/14, 9:25 AM, Phil Hystad wrote:
>> Phil,
>> 
>> The Cady book being referenced here is the KX3 book which is still first 
>> edition only as far as I know.  The K3 book is now in second edition.
>> 
>> phil
>> 
>> On Apr 10, 2014, at 8:53 AM, Phil Wheeler  wrote:
>> 
>>> It may depend on the edition you have. I have the 2nd edition and page 147 
>>> relates to the KRX3 subreceiver.
>>> 
>>> Phil W7OX
>>> 
>>> On 4/10/14, 6:26 AM, Phil Hystad wrote:
 I probably looked in the index and found nothing.  Something like that 
 needs to be in the index.  I almost always use an index before looking at 
 the table of contents when I search for something.  I am a believer in 
 that an index is a rich information source (or should be) and should 
 contain a lot more information than just page number look up such as cross 
 references, associations, and even new information when it 
 fits the content.
 
 phil
 
 
 On Apr 9, 2014, at 9:31 PM, Jim Bennett  wrote:
 
> It be on page 147 in my book. Figure 9.17 shows a complete 
> K3-->KPA500-->KAT500 setup. This is exactly how I've got mine set up. 
> Nothing in the index, but it is in the TOC in the front. :-)
> 
> Jim / W6JHB
> 
> 
> On   Wednesday, Apr 9, 2014, at  Wednesday, 9:25 PM, Phil Wheeler wrote:
> 
>> Surprising, because I couldn't find any mention of the KPA500 in his K3 
>> book by searching the pdf version. Maybe I did a typo.
>> 
>> 73, Phil W7OX
> 

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[Elecraft] KAT500 Utility 1.14.4.10 beta test version available on our FTP site

[Dick Dievendorff]

We have placed a new beta KAT500 Utility (Windows version) on our FTP site.

 

When the KAT500 has been configured for "sleep when idle", configuration
changes were difficult. The new version wakes up the sleeping
microcontroller more reliably.

 

Additionally, the Erase Antenna Tuner Memory function has been moved from a
tab on the Edit Configuration property page to a dialog invoked directly
from a button on the Configuration page.

 

ftp://ftp.elecraft.com/tmp/KAT500/KAT500Utility/KAT500_Utility_Setup_1_14_4_
10.exe

 

You may need to refresh your browser's cache; the file was added just this
morning.

 

73 de Dick, K6KR



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Re: [Elecraft] [P3] fatal error

[George Dubovsky]

Parameter Initialization fixed it! Thank you, Alan.

73,

geo - n4ua


On Thu, Apr 10, 2014 at 11:50 AM, Alan Bloom  wrote:

> Try doing the Parameter Initialization (see Troubleshooting section of P3
> Owner's Manual.)  Basically you hold the LABELS key while turning on the
> power with the POWER key.
>
> Alan N1AL
>
>
>
> On 04/10/2014 07:27 AM, George Dubovsky wrote:
>
>> OK, I just spent 2 hours as W1AW/4 on 40 cw and everything was working
>> fine. I changed bands and the P3 displayed:
>>
>> FATAL ERROR
>> In: ddc_set_coef()
>> span=0
>>
>> Press any active key to escape
>>
>> But all keys are dead, so no escape from the black screen of death. Power
>> down/up does no change the message. Does anyone know what I'm up against
>> here? Oh, this P3 has the SVGA board installed which I am not using.
>>
>> 73,
>>
>> geo - n4ua
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Re: [Elecraft] Configuring: KX3 --> KPA500 --> KAT500

[Mike Reublin]

Download the .pdf version of the manual(s). They're searchable.

73, Mike NF4L

> On 4/10/14, 6:26 AM, Phil Hystad wrote:
>> I probably looked in the index and found nothing.  Something like that needs 
>> to be in the index.  I almost always use an index before looking at the 
>> table of contents when I search for something.  I am a believer in that an 
>> index is a rich information source (or should be) and should contain a lot 
>> more information than just page number look up such as cross references, 
>> associations, and even new information when it fits the content.
>> 
>> phil
>> 
>> 


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[Elecraft] [KX3] SWR Reading Instability Follow-up

[Gary Hawkins]

Firstly thanks to everyone for your input on potential causes of SWR 
reading instability with my KX3.  Since there were so many possibilities 
(antenna, heating, radio, etc.) I knew I needed to go back to basics and 
initially test the radio with a dummy load on the bench.  Well, I 
managed to recreate the issue and have documented my findings in a short 
4 min video, http://youtu.be/cwxk4E01IfM


In short the problem appears to be associated with the KX3 reporting of 
SWR in SSB mode.  My radio is configured as follows: uC 01.79, dSP 
01.27.  As this issue has only recently developed (last month or so), 
and while I can't be 100% sure, I think it may have occurred after I 
upgraded to this firmware version.


I'll be contacting the folks at Elecraft to get their opinion on this.

73's Gary K6YOA
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Re: [Elecraft] [KX3] SWR Reading Instability Follow-up

[VaibhaV Sharma]

I have noticed the same thing on my KX3 as well.

Can you redo the 1-2-1-2 test with FM?

You did the SSB test only with 1-2-1-2 but the FM test with XMIT full power
and no variation in power with speech.

-- 
VaibhaV



On Thu, Apr 10, 2014 at 11:06 AM, Gary Hawkins  wrote:

> Firstly thanks to everyone for your input on potential causes of SWR
> reading instability with my KX3.  Since there were so many possibilities
> (antenna, heating, radio, etc.) I knew I needed to go back to basics and
> initially test the radio with a dummy load on the bench.  Well, I managed
> to recreate the issue and have documented my findings in a short 4 min
> video, http://youtu.be/cwxk4E01IfM
>
> In short the problem appears to be associated with the KX3 reporting of
> SWR in SSB mode.  My radio is configured as follows: uC 01.79, dSP 01.27.
>  As this issue has only recently developed (last month or so), and while I
> can't be 100% sure, I think it may have occurred after I upgraded to this
> firmware version.
>
> I'll be contacting the folks at Elecraft to get their opinion on this.
>
> 73's Gary K6YOA
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Re: [Elecraft] [KX3] SWR Reading Instability Follow-up

[Phil Wheeler]

I never watch SWR in SSB, but CMP and ALC.

73, Phil W7OX

On 4/10/14, 11:51 AM, VaibhaV Sharma wrote:

I have noticed the same thing on my KX3 as well.

Can you redo the 1-2-1-2 test with FM?

You did the SSB test only with 1-2-1-2 but the FM test with XMIT full power
and no variation in power with speech.



On Thu, Apr 10, 2014 at 11:06 AM, Gary Hawkins 
 wrote:



Firstly thanks to everyone for your input on potential causes of SWR
reading instability with my KX3.  Since there were so many possibilities
(antenna, heating, radio, etc.) I knew I needed to go back to basics and
initially test the radio with a dummy load on the bench.  Well, I managed
to recreate the issue and have documented my findings in a short 4 min
video,http://youtu.be/cwxk4E01IfM

In short the problem appears to be associated with the KX3 reporting of
SWR in SSB mode.  My radio is configured as follows: uC 01.79, dSP 01.27.
  As this issue has only recently developed (last month or so), and while I
can't be 100% sure, I think it may have occurred after I upgraded to this
firmware version.

I'll be contacting the folks at Elecraft to get their opinion on this.

73's Gary K6YOA

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Re: [Elecraft] K2ssb

[Don Wilhelm]

John,

On your audio and lack of bargraph indication - yes, the bargraph should 
go up to about where the requested power is set on voice peaks.
Set your SSBC setting to 3-1 and try again.  If you are using an 
electret microphone (Elecraft MH2 or ProSet-K2) you must have the bias 
resistor between mic jack pin 6 and pin 1 (5.6k).
If you are using a dynamic microphone, the bias resistor must be removed 
to prevent current flow through the mic element.


For high output electret mics, it is usually sufficient to set SSBA to 
1, but low output dynamic mics (read Heil as well as professional mics) 
have quite low output.  In that case, set the SSBA to 2 or even 3.  If 
you have a very low output microphone, you may need to add a mic preamp.


If your CW and narrow SSB filter response is down since adding the KSB2, 
I would suggest a thorough check of the diode orientation and soldering 
of every component around the KSB2 filter area.


Check the amplitude of the headphone audio using a steady signal into 
the antenna and the K2 in CW mode.  The Spectrogram display is a good 
indicator of relative amplitude.  The CW signal amplitude should be the 
same as the OP1 filter response.


73,
Don W3FPR

On 4/10/2014 11:51 AM, John Cooper wrote:

My k2ssb when u put in transmit the led bargraph doesn't light up as u talk.  
Tried switching to alc mode where it lights backwards still nothing.  My 
wattmeter shows I'm getting out though.  If it matters I have the last led in 
the bargraph set for zero beat.  It works on recieve just fine.  The op1 
filters work great but I seem to have lost my cw filters 2-4 they were fine 
before adding ssb option.

John WT5Y


Sent from my Cricket smartphone
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Re: [Elecraft] [KX3] SWR Reading Instability Follow-up

[Mark Petiford]

Re:  Can you redo the 1-2-1-2 test with FM?

I just duplicated the original test with my KX3 (FW 1.94/1.28) and got the same 
results.  I repeated the "1-2-1-2" voice test and the SWR remained stable as it 
did in AM as well. 

It looks almost like the KX3 is calculating the SWR using a good current value 
for forward power (dropping off to zero as the voice trails off between 
syllables or words) but using a stale value (not updated often enough) for 
reflected power.  When the forward power goes to zero or near zero as it does 
on SSB between syllables, it doesn't take much reflected power to give you the 
appearance of high SWR if you are using a stale reflected power value.  In AM 
and FM, the carries remains relatively high stabilizing the calculation by 
never letting forward power drop to, or near, zero between voice syllables.  

Of course, it could also be related to the time constants in the hardware, but 
now I am speculating too much...and being a hardware guy, I love to blame 
things on the software guys!  ;-)

Mark
KE6BB
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Re: [Elecraft] [KX3] SWR Reading Instability Follow-up

[Mark Petiford]

The second sentence, first paragraph should have read:

  "I repeated the "1-2-1-2" voice test ON FM and the SWR remained stable as it 
did in AM as well."

Mark
KE6BB
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Re: [Elecraft] [KX3] SWR Reading Instability Follow-up

[VaibhaV Sharma]

Thanks for repeating the tests.

I started paying close attention to the SWR meter after I got the Alex
Loop. The antenna has a very narrow window where the SWR is low (receive
noise high). I try not to use the ATU with the loop. Even touching the loop
capacitor dial changes its behavior and it is often hard to calibrate it
for a low SWR while watching the SWR meter.

The KX3 SWR indication hopefully is only a UI issue. Is there a way to
stream SWR and other data off the radio so one can watch what the radio
sees?

-- 
VaibhaV Sharma
W7VAI



On Thu, Apr 10, 2014 at 1:26 PM, Mark Petiford  wrote:

> Re: Can you redo the 1-2-1-2 test with FM?
>
> I just duplicated the original test with my KX3 (FW 1.94/1.28) and got the
> same results. I repeated the "1-2-1-2" voice test and the SWR remained
> stable as it did in AM as well.
>
> It looks almost like the KX3 is calculating the SWR using a good current
> value for forward power (dropping off to zero as the voice trails off
> between syllables or words) but using a stale value (not updated often
> enough) for reflected power. When the forward power goes to zero or near
> zero as it does on SSB between syllables, it doesn't take much reflected
> power to give you the appearance of high SWR if you are using a stale
> reflected power value. In AM and FM, the carries remains relatively high
> stabilizing the calculation by never letting forward power drop to, or
> near, zero between voice syllables.
>
> Of course, it could also be related to the time constants in the hardware,
> but now I am speculating too much...and being a hardware guy, I love to
> blame things on the software guys! ;-)
>
> Mark
> KE6BB
>
>
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Re: [Elecraft] [KX3] SWR Reading Instability Follow-up

[Nr4c]

I suspect that VSWR tests should be done with constant carrier CW, and not with 
a fluctuating signal as SSB. 

Sent from my iPhone
...nr4c. bill


> On Apr 10, 2014, at 4:26 PM, Mark Petiford  wrote:
> 
> Re:  Can you redo the 1-2-1-2 test with FM?
> 
> I just duplicated the original test with my KX3 (FW 1.94/1.28) and got the 
> same results.  I repeated the "1-2-1-2" voice test and the SWR remained 
> stable as it did in AM as well. 
> 
> It looks almost like the KX3 is calculating the SWR using a good current 
> value for forward power (dropping off to zero as the voice trails off between 
> syllables or words) but using a stale value (not updated often enough) for 
> reflected power.  When the forward power goes to zero or near zero as it does 
> on SSB between syllables, it doesn't take much reflected power to give you 
> the appearance of high SWR if you are using a stale reflected power value.  
> In AM and FM, the carries remains relatively high stabilizing the calculation 
> by never letting forward power drop to, or near, zero between voice 
> syllables.  
> 
> Of course, it could also be related to the time constants in the hardware, 
> but now I am speculating too much...and being a hardware guy, I love to blame 
> things on the software guys!  ;-)
> 
> Mark
> KE6BB
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Re: [Elecraft] [KX3] SWR Reading Instability Follow-up

[Fred Jensen]

With magnetic loops becoming more popular, it probably bears commenting: 
 The AlexLoop [and clones] is a resonant transformer and *must* be at 
resonance to work.  This means No ATU's, ever.  At resonance, the 
coupling between primary and secondary is very high and mine works very 
well.  Off resonance, it becomes an MDL [magnetic dummy load].  A friend 
couldn't get his to work and when I saw him set it up, he was adjusting 
quickly for a moderate SWR and then letting the ATU match it.


Yes, mine is a bit touchy on 40 meters.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

On 4/10/2014 1:56 PM, VaibhaV Sharma wrote:


I started paying close attention to the SWR meter after I got the Alex
Loop. The antenna has a very narrow window where the SWR is low (receive
noise high). I try not to use the ATU with the loop.


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Re: [Elecraft] [KX3] SWR Reading Instability Follow-up

[Don Wilhelm]

Mark's analysis was 'right on'.  Due to the varying nature of the SSB RF 
waveform and the workings of digital sampling, it is impossible for the 
forward power and reverse power to be sampled at exactly the same 
instant (one of the limitations of digital sampling intervals).
So, if the reverse power happens to be sampled at a time the RF is high, 
and the forward power is sampled when the RF is low, a higher SWR than 
actually exists will be computed (and displayed).


The solution is to check the SWR when in TUNE (set TUN PWR to a sane 
value) and adjust the Alexloop using that input and SWR indication. Then 
when operating SSB, either ignore the SWR indication or switch to 
display ALC and Compression which should be more meaningful.


73,
Don W3FPR

On 4/10/2014 4:56 PM, VaibhaV Sharma wrote:

Thanks for repeating the tests.

I started paying close attention to the SWR meter after I got the Alex
Loop. The antenna has a very narrow window where the SWR is low (receive
noise high). I try not to use the ATU with the loop. Even touching the loop
capacitor dial changes its behavior and it is often hard to calibrate it
for a low SWR while watching the SWR meter.

The KX3 SWR indication hopefully is only a UI issue. Is there a way to
stream SWR and other data off the radio so one can watch what the radio
sees?



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Re: [Elecraft] [KX1] 1st QSO on KX1 #2794

[Matt VK2RQ]

I just realised, the question of optimising the L1 and L2 inductors in the LPF 
for the basic radio is a bit academic anyway, since those inductors will be 
replaced when I install the KXB3080 module. Thanks also to those who replied 
off-list.

73,
Matt VK2RQ

> On 11 Apr 2014, at 12:46 am, Matt VK2RQ  wrote:
> 
> I just made my first contact on my new KX1 with a VK5 about 700 miles away 
> who was running a K3 -- the KX1 is indeed a very nice rig.
> 
> Initially I was getting about 2.7 W out on 40m and 3.2W out on 20m (13.8V 
> supply, 50 ohm dummy load). I read in the manual that the output on 20m 
> should normally be less that on 40m, and this can be achieved by compressing 
> turns on the L2 inductor to adjust the LPF. I found that compressing turns on 
> L2 reduced the output power on both bands, but 20m was still more output than 
> 40m. By compressing the turns on the L1 inductor as well, 40m is now around 
> 1.9W, and 20m is around 1.8W, so overall power is reduced, but the 20m output 
> is now below the 40m output. In the KXB3080 module kit which I haven't built 
> yet, I think there are some resistors that can be swapped in for R11 and R30 
> to bring output power back up a bit. Is there anything else I can check to 
> make sure the LPF is set up properly?
> 
> 73, Matt VK2RQ
> 
> 
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Re: [Elecraft] [KX1] 1st QSO on KX1 #2794

[Don Wilhelm]

Matt,

Yes, you will be replacing L1 and L2 with the KXB3080 Low Pass Filter 
board.  Take great care when assembling and installing that board 
because most builders' problems stem from that board.  Follow the 
instructions exactly, there is little room for "creative building".


With the KXB3080 installed, you can expect the greatest power output to 
be on 80 and 30 meters.  If that is in excess of 3.8 watts, the other 
bands should be able to be brought into range (greater than 3.0 watts 
with a 13.8 volt power source) by 'monkeying' with the turns 
spreading/compressing of L1 and L2.


My usual expectation is for 3.5 watts or greater on all bands with a 
13.8 volt power source, but that exceeds specs.  The KX1 Power Mod that 
is supplied with the KXB3080 may be required, but do not expect the 
power to exceed 5 watts (which under some SWR conditions may exceed the 
voltage ratings of the capacitors in the Low Pass Filter.


73,
Don W3FPR

On 4/10/2014 6:18 PM, Matt VK2RQ wrote:

I just realised, the question of optimising the L1 and L2 inductors in the LPF 
for the basic radio is a bit academic anyway, since those inductors will be 
replaced when I install the KXB3080 module. Thanks also to those who replied 
off-list.

73,
Matt VK2RQ


On 11 Apr 2014, at 12:46 am, Matt VK2RQ  wrote:

I just made my first contact on my new KX1 with a VK5 about 700 miles away who 
was running a K3 -- the KX1 is indeed a very nice rig.

Initially I was getting about 2.7 W out on 40m and 3.2W out on 20m (13.8V 
supply, 50 ohm dummy load). I read in the manual that the output on 20m should 
normally be less that on 40m, and this can be achieved by compressing turns on 
the L2 inductor to adjust the LPF. I found that compressing turns on L2 reduced 
the output power on both bands, but 20m was still more output than 40m. By 
compressing the turns on the L1 inductor as well, 40m is now around 1.9W, and 
20m is around 1.8W, so overall power is reduced, but the 20m output is now 
below the 40m output. In the KXB3080 module kit which I haven't built yet, I 
think there are some resistors that can be swapped in for R11 and R30 to bring 
output power back up a bit. Is there anything else I can check to make sure the 
LPF is set up properly?

73, Matt VK2RQ



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[Elecraft] [KX3] CMP restricts transmitted bandwidth

[d...@lightstream.net]

New KX3 owner here. While setting it up for SSB, I expected the
compression to work similarly to that of the K3. On the K3, the
compression level does not affect the bandwidth of the transmitted audio,
but it definitely does on the KX3.

With the KX3, if the CMP level is set to "0", the transmit bandwidth
(according to the K3/P3 I'm using to monitor the output of the KX3) is
about 2.8 KHz, which I would expect (extending from about 100 Hz to
2.9Khz). However, as soon as the CMP is increased to anything above "0",
the bandwidth is constrained to about 2.45 KHz (extending from 250 Hz to
about 2.7 KHz).

Have I missed a setup parameter somewhere, or is this the intended behavior?

Dale,
WA8SRA

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Re: [Elecraft] [KX3] SWR Reading Instability Follow-up

[Lynn W. Taylor, WB6UUT]

My only question here is WHY?

I think Mark is on the right track.  It could also be that between 
syllables, and during "quieter" times in speech we're simply not seeing 
enough RF to get off the bottom bits of the A/D converter.


Either way, looking at a wildly varying transmitter output and trying to 
somehow "track" true SWR probably lies beyond what the electronics is 
meant to do reliably.


I don't think this is poor design either: I think it fails to accurately 
measure SWR below some very low power level and we should not expect it 
to do so.


Trying to capture a stream of inaccurate data is not going to produce a 
useful result.


73 -- Lynn

On 4/10/2014 1:56 PM, VaibhaV Sharma wrote:

Is there a way to
stream SWR and other data off the radio so one can watch what the radio
sees?

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[Elecraft] Eneloop 2500 mah batteries

[lane zeitler]

Just received my Sanyo eneloop 2500 mAH rechargeable batteries niMH 
cells..will start the charge cycle when I get home from work tonight. How 
long should I charge them for...this will be the first charge and I have not 
used the radio yet at all with these new batteries. 

Also, if I keep the xmit power down to about 3watts what kind of operation time 
can I expect with casual SSB xmissions? Any thoughts on this are appreciated, 
thanks.

LCDR Lane Zeitler
Ku7i
JH1JCM
Forward Deployed 
US Naval Hospital 
Yokosuka Japan
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Re: [Elecraft] Eneloop 2500 mah batteries

[Walter Underwood]

16 hours is a full charge, but Eneloops come with a fair amount of charge. I'd 
go with 8 hours. The charger will stop as soon as it detects the cells 
beginning to heat up. You'll see the message "NOT 0 - 40C", if I remember 
correctly.

wunder
K6WRU

On Apr 10, 2014, at 6:27 PM, lane zeitler  wrote:

> Just received my Sanyo eneloop 2500 mAH rechargeable batteries niMH 
> cells..will start the charge cycle when I get home from work tonight. How 
> long should I charge them for...this will be the first charge and I have not 
> used the radio yet at all with these new batteries. 
> 
> Also, if I keep the xmit power down to about 3watts what kind of operation 
> time can I expect with casual SSB xmissions? Any thoughts on this are 
> appreciated, thanks.
> 
> LCDR Lane Zeitler
> Ku7i
> JH1JCM
> Forward Deployed 
> US Naval Hospital 
> Yokosuka Japan
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--
Walter Underwood
wun...@wunderwood.org



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Re: [Elecraft] KAT500 Utility 1.14.4.10 beta test version available on our FTP site

[Stan Gibbs, KR7C]

With the new utility, I am still seeing incorrect responses from commands
when the oscillator sleep is enabled.  The oscillator does start after one
"an;" command, but the correct "AN1;" response does not occur until I send
two more "an;" commands.

I would expect to see the correct response after the first "an;" command, as
happens when the idle sleep is disabled.





-
73, Stan - KR7C
--
View this message in context: 
http://elecraft.365791.n2.nabble.com/KAT500-Utility-1-14-4-10-beta-test-version-available-on-our-FTP-site-tp7586987p7587005.html
Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] KAT500 Utility 1.14.4.10 beta test version available on our FTP site

[Dick Dievendorff]

Are you entering these commands from the command tester?   It takes almost 50 
msec to wake up the microcontroller and several serial characters will arrive 
and are lost in that time. If you are entering commands from the command 
tester, it's better to turn off idle sleep. I have a command macro button set 
up with SL0;SL; to accomplish this.

The operate page works OK, right?

73 de Dick, K6KR



> On Apr 10, 2014, at 21:11, "Stan Gibbs, KR7C"  wrote:
> 
> With the new utility, I am still seeing incorrect responses from commands
> when the oscillator sleep is enabled.  The oscillator does start after one
> "an;" command, but the correct "AN1;" response does not occur until I send
> two more "an;" commands.
> 
> I would expect to see the correct response after the first "an;" command, as
> happens when the idle sleep is disabled.
> 
> 
> 
> 
> 
> -
> 73, Stan - KR7C
> --
> View this message in context: 
> http://elecraft.365791.n2.nabble.com/KAT500-Utility-1-14-4-10-beta-test-version-available-on-our-FTP-site-tp7586987p7587005.html
> Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] Eneloop 2500 mah batteries

[Mark Petiford]

Lane,Walter hit the nail on the head.  The KXBC3 will not overcharge your 
cells, and its thermal sensors will shut down the charge cycle if the cells 
reach their temperature limit, 0 to 40 deg. C as Walter mentioned.  Charging 
will resume once they cool down.  New cells shouldn't need much charging, but a 
4 or 8 hour top-off won't hurt them.  A 16 hr. charge won't hurt them either, 
but you will waste a lot of energy in heat since any energy that cannot be 
absorbed for charging because the cells are fully charged is converted to heat. 
 It can get a little scary because the KX3 gets pretty warm as the cells reach 
full charge, but the KXBC3 is a solid conservative constant current design for 
2000 mah or larger NiMH cells.  You will eventually learn to trust it.  
MarkKE6BB
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