Re: [Elecraft] Seeking comments on Ham Expo from participants

[Adrian]

I add to request for the K4 Q video if available please ?

The expo revealed some great K4 features previously unknown to myself. 
Would love to see the Q ?



Thankyou

Adrian Fewster



On 22/8/20 12:32 pm, Grant Youngman wrote:

I thought the Expo was excellent overall. I visited all of the booths, and 
watched maybe 80% of the presentations, both during the live event and 
afterwards.  Couldn’t have cared less about trying to earn points and winning a 
prize.  And of course the Elecraft events.

It was unique.   And except for not having a BA boneyard to wander through and 
take too much of my money, the best fest I attended this summer.  Well, it was 
the ONLY fest I attended :-)

Your presentation on the 3D KX2 design, was thoroughly enjoyable and very interesting.  
Eric’s appearances— all three of the them — on the K4,  were informative.  I do wish 
the Q after Eric’s official Expo presentation had been posted to the web, and 
perhaps more so,  both of the extended 90 minute Q on the K4.  I learned 
something new in each of them.

I had some issues with the expo software itself, which I referred to the 
organizers as feedback in the questionnaire I received afterwards.  But they 
were largely minor, and mostly just navigation issues.

I’m looking forward to the coming one of these next year.  Mostly, I’m looking 
forward to my K4 :-)

Grant NQ5T




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Re: [Elecraft] Seeking comments on Ham Expo from participants

[Grant Youngman]

I thought the Expo was excellent overall. I visited all of the booths, and 
watched maybe 80% of the presentations, both during the live event and 
afterwards.  Couldn’t have cared less about trying to earn points and winning a 
prize.  And of course the Elecraft events.

It was unique.   And except for not having a BA boneyard to wander through and 
take too much of my money, the best fest I attended this summer.  Well, it was 
the ONLY fest I attended :-)

Your presentation on the 3D KX2 design, was thoroughly enjoyable and very 
interesting.  Eric’s appearances— all three of the them — on the K4,  were 
informative.  I do wish the Q after Eric’s official Expo presentation had 
been posted to the web, and perhaps more so,  both of the extended 90 minute 
Q on the K4.  I learned something new in each of them.

I had some issues with the expo software itself, which I referred to the 
organizers as feedback in the questionnaire I received afterwards.  But they 
were largely minor, and mostly just navigation issues.

I’m looking forward to the coming one of these next year.  Mostly, I’m looking 
forward to my K4 :-)

Grant NQ5T





> On Aug 21, 2020, at 7:47 PM, Wayne Burdick  wrote:
> 
> Hi all,
> 
> I'd like to write up a summary of the recent [virtual] Ham Expo, especially 
> for the benefit of those who weren't able to make it. Perhaps they'll get a 
> chance later this year or next March -- both likely, as the Expo was quite a 
> success overall.
> 
> It was, shall we say, unique...I'd love to hear about your experiences, good, 
> bad, or in-between. Ideas for future expos are also welcome, whether 
> Elecraft-specific or applicable to the event as a whole.
> 
> This feedback will also be invaluable for the team that put on the expo, 
> including my good friend Eric Guth, 4Z1UG. (Don't let my acquaintance with 
> Eric inhibit your free expression...he's pure teflon.)
> 
> Thanks again to all who dropped by our booth.
> 
> Wayne
> N6KR

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Re: [Elecraft] Seeking comments on Ham Expo from participants

[Wayne Burdick]

Agreed on all points. OK if I distill this down and share it with Margaret and 
Eric? (Both Erics, actually.)

Wayne


elecraft.com

> On Aug 21, 2020, at 5:51 PM, Keith Onishi  wrote:
> 
> Hello Wayne,
> 
> I participated 2 Elecraft live sessions, the 1st K4 demo and QA and KX2 3D 
> modeling. Both were really excellent.
> I first guessed the K4 demo and QA session was a prepared demonstration plus 
> some QA, but it did not. The demo were as parts of the answer to 
> participants’ questions. It was as if I were watching and listening to an 
> engineer answering questions in front of K4 at Elecraft booth in a convention 
> like Dayton. So, the information provided at the session was very interested 
> and useful.
> The KX2 3D modeling session was what I have never seen before. No other radio 
> manufacturers have provided such in depth information on the radio design. 
> The session was more than I expected.
> 
> Thank you very much for Providing such nice sessions.
> 
> 73 de JH3SIF 
> 
> Kiichiro (Keith) Onishi
> Sent from iPad
> 
>> 2020/08/22 8:50、Wayne Burdick のメール:
>> 
>> Hi all,
>> 
>> I'd like to write up a summary of the recent [virtual] Ham Expo, especially 
>> for the benefit of those who weren't able to make it. Perhaps they'll get a 
>> chance later this year or next March -- both likely, as the Expo was quite a 
>> success overall.
>> 
>> It was, shall we say, unique...I'd love to hear about your experiences, 
>> good, bad, or in-between. Ideas for future expos are also welcome, whether 
>> Elecraft-specific or applicable to the event as a whole.
>> 
>> This feedback will also be invaluable for the team that put on the expo, 
>> including my good friend Eric Guth, 4Z1UG. (Don't let my acquaintance with 
>> Eric inhibit your free expression...he's pure teflon.)
>> 
>> Thanks again to all who dropped by our booth.
>> 
>> Wayne
>> N6KR
>> 
>> 
>> 
>> 
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Re: [Elecraft] Seeking comments on Ham Expo from participants

[Keith Onishi]

Hello Wayne,

I participated 2 Elecraft live sessions, the 1st K4 demo and QA and KX2 3D 
modeling. Both were really excellent.
I first guessed the K4 demo and QA session was a prepared demonstration plus 
some QA, but it did not. The demo were as parts of the answer to participants’ 
questions. It was as if I were watching and listening to an engineer answering 
questions in front of K4 at Elecraft booth in a convention like Dayton. So, the 
information provided at the session was very interested and useful.
The KX2 3D modeling session was what I have never seen before. No other radio 
manufacturers have provided such in depth information on the radio design. The 
session was more than I expected.

Thank you very much for Providing such nice sessions.

73 de JH3SIF 

Kiichiro (Keith) Onishi
Sent from iPad

> 2020/08/22 8:50、Wayne Burdick のメール:
> 
> Hi all,
> 
> I'd like to write up a summary of the recent [virtual] Ham Expo, especially 
> for the benefit of those who weren't able to make it. Perhaps they'll get a 
> chance later this year or next March -- both likely, as the Expo was quite a 
> success overall.
> 
> It was, shall we say, unique...I'd love to hear about your experiences, good, 
> bad, or in-between. Ideas for future expos are also welcome, whether 
> Elecraft-specific or applicable to the event as a whole.
> 
> This feedback will also be invaluable for the team that put on the expo, 
> including my good friend Eric Guth, 4Z1UG. (Don't let my acquaintance with 
> Eric inhibit your free expression...he's pure teflon.)
> 
> Thanks again to all who dropped by our booth.
> 
> Wayne
> N6KR
> 
> 
> 
> 
> __
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Re: [Elecraft] OT: RF interference from grow lights (maybe).

[Mark Musick]

Hi Phil,
Having worked for Duke Energy/Cinergy/PSI Energy for 35 years in operations, 
system planning, substation design and the rate department doing rate design I 
can tell you there is no revenue lose due to energy losses. It is all rolled 
into the rates. So, all customers pay for system losses.
However, you are correct that it is to the utilities advantage to find and 
correct these situations. Here in Indiana, the Indiana Utility Regulatory 
Commission (IURC) looks at the system losses in rate cases and reviews steps 
taken to mitigate system losses.
System losses is one of many things included in the cost of service study 
presented to the commission when requesting a rate increase. The commission has 
questioned system losses in the past when they seemed out of line with previous 
lose figures given to them.

73,
Mark, WB9CIF

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Phil Kane
Sent: Friday, August 21, 2020 18:31
To: ab2tc 
Cc: Elecraft Reflector 
Subject: Re: [Elecraft] OT: RF interference from grow lights (maybe).

On 8/21/2020 10:36 AM, ab2tc wrote:

> Thanks for your response and I did receive several private E-mails as well.
> It sounds like a phone call to the power company should be my next 
> move. If I just could find a way to get to a live person without going 
> through a million automated responses and interminable waits!

In another life when I was with the San Francisco office of the FCC, I used to 
refer IX calls to Pacific Gas & Electric in California and my contact there was 
Jim Gillespie in General Construction.  Jim was a great help, and I used to kid 
him that if this was too much work for him he could always go back to washing 
insulators!  His counterpart at Southern California Edison was also well-known 
as an IX-finder.  We're all retired from IX-chasing now and I wouldn't have any 
idea who to refer such calls to today.

As Ken Brown (W2KB) has pointed out over the years, it's to the advantage of 
the utility to find and fix such leaks (if that is the
problem) because it loses money to have energy delivered to a non-paying load.

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

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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[Elecraft] Seeking comments on Ham Expo from participants

[Wayne Burdick]

Hi all,

I'd like to write up a summary of the recent [virtual] Ham Expo, especially for 
the benefit of those who weren't able to make it. Perhaps they'll get a chance 
later this year or next March -- both likely, as the Expo was quite a success 
overall.

It was, shall we say, unique...I'd love to hear about your experiences, good, 
bad, or in-between. Ideas for future expos are also welcome, whether 
Elecraft-specific or applicable to the event as a whole.

This feedback will also be invaluable for the team that put on the expo, 
including my good friend Eric Guth, 4Z1UG. (Don't let my acquaintance with Eric 
inhibit your free expression...he's pure teflon.)

Thanks again to all who dropped by our booth.

Wayne
N6KR




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Re: [Elecraft] OT: RF interference from grow lights (maybe).

[JP Douglas]

A friend of mine had same issues a couple of years ago here in Maine, turned 
out it was marijuana growers using non approved chinese grow lights brought in 
illegally through Canada and being sold in Portland, ME.
We put an end to that, the FCC deputised my friend...even got in the Portland 
newspaper.
73 de Jose Douglas KB1TCD

Sent from my iPad

> On Aug 21, 2020, at 2:31 PM, Phil Kane  wrote:
> 
> On 8/21/2020 10:36 AM, ab2tc wrote:
> 
>> Thanks for your response and I did receive several private E-mails as well.
>> It sounds like a phone call to the power company should be my next move. If
>> I just could find a way to get to a live person without going through a
>> million automated responses and interminable waits!
> 
> In another life when I was with the San Francisco office of the FCC, I
> used to refer IX calls to Pacific Gas & Electric in California and my
> contact there was Jim Gillespie in General Construction.  Jim was a
> great help, and I used to kid him that if this was too much work for him
> he could always go back to washing insulators!  His counterpart at
> Southern California Edison was also well-known as an IX-finder.  We're
> all retired from IX-chasing now and I wouldn't have any idea who to
> refer such calls to today.
> 
> As Ken Brown (W2KB) has pointed out over the years, it's to the
> advantage of the utility to find and fix such leaks (if that is the
> problem) because it loses money to have energy delivered to a non-paying
> load.
> 
> 73 de K2ASP - Phil Kane
> Elecraft K2/100   s/n 5402
> 
> From a Clearing in the Silicon Forest
> Beaverton (Washington County) Oregon
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Re: [Elecraft] Topband: Rohn 25 Vertical questions.

[Augie "Gus" Hansen]

Wish me well -- I'm evac from fires, and don't know if I still have a 
station. K6XX fears that his is gone.
73, Jim K9YC 


Such a tragic situation. Best wishes to you, to Bob, and all others in 
the affected areas. Your personal safety is first in my thoughts, of 
course, but here's hoping your property survives as well.


Gus Hansen
KB0YH

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Re: [Elecraft] KAT100 memory question

[Nr4c]

 Oooops


I misread your email.  You are asking about the KAT100 in the radio.  I read as 
KAT500.  

Download the KAT500 manual and I believe segments are the same for both ATUs. 

And “learning” process is the same. 




Sent from my iPhone
...nr4c. bill


> On Aug 21, 2020, at 2:41 PM, Mike Kopacki  wrote:
> 
> I read Recision D on the website and didn’t see anything in that one either. 
> 
> Thanks,
> Mike NJ2OM 
> 
>> On Aug 21, 2020, at 11:48 AM, Mike Kopacki  wrote:
>> 
>> Guess I missed that!  Checking now. 
>> 
>> Hmm. Bill, I just paged thru the entire manual and there is no mention of 
>> what you’re saying. 
>> 
>> Is it possible you have a newer manual?  This one is Revision C, March 12, 
>> 2003. 
>> 
>> Thanks,
>> Mike NJ2OM 
>> 
 On Aug 21, 2020, at 11:30 AM, Nr4c  wrote:
>>> 
>>> Read the manual. There is a list of the frequency segments that can be 
>>> stored in the memory. It’s near the back of the manual.  Most bands are 
>>> 20KHz segments, so many for each band. 
>>> 
>>> Sent from my iPhone
>>> ...nr4c. bill
>>> 
>>> 
> On Aug 21, 2020, at 8:47 AM, NJMike  wrote:
 
 The KAT100 manual says that the tuner’s settings are stored in EEPROM. 
 
 My question is - how many memories are stored?  Is it just one for each
 band?
 
 Thanks,
 Mike NJ2OM 
 
 
 
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Re: [Elecraft] KAT100 memory question

[Mike Kopacki]

I read Recision D on the website and didn’t see anything in that one either. 

Thanks,
Mike NJ2OM 

> On Aug 21, 2020, at 11:48 AM, Mike Kopacki  wrote:
> 
> Guess I missed that!  Checking now. 
> 
> Hmm. Bill, I just paged thru the entire manual and there is no mention of 
> what you’re saying. 
> 
> Is it possible you have a newer manual?  This one is Revision C, March 12, 
> 2003. 
> 
> Thanks,
> Mike NJ2OM 
> 
>> On Aug 21, 2020, at 11:30 AM, Nr4c  wrote:
>> 
>> Read the manual. There is a list of the frequency segments that can be 
>> stored in the memory. It’s near the back of the manual.  Most bands are 
>> 20KHz segments, so many for each band. 
>> 
>> Sent from my iPhone
>> ...nr4c. bill
>> 
>> 
 On Aug 21, 2020, at 8:47 AM, NJMike  wrote:
>>> 
>>> The KAT100 manual says that the tuner’s settings are stored in EEPROM. 
>>> 
>>> My question is - how many memories are stored?  Is it just one for each
>>> band?
>>> 
>>> Thanks,
>>> Mike NJ2OM 
>>> 
>>> 
>>> 
>>> --
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Re: [Elecraft] OT: RF interference from grow lights (maybe).

[Phil Kane]

On 8/21/2020 10:36 AM, ab2tc wrote:

> Thanks for your response and I did receive several private E-mails as well.
> It sounds like a phone call to the power company should be my next move. If
> I just could find a way to get to a live person without going through a
> million automated responses and interminable waits!

In another life when I was with the San Francisco office of the FCC, I
used to refer IX calls to Pacific Gas & Electric in California and my
contact there was Jim Gillespie in General Construction.  Jim was a
great help, and I used to kid him that if this was too much work for him
he could always go back to washing insulators!  His counterpart at
Southern California Edison was also well-known as an IX-finder.  We're
all retired from IX-chasing now and I wouldn't have any idea who to
refer such calls to today.

As Ken Brown (W2KB) has pointed out over the years, it's to the
advantage of the utility to find and fix such leaks (if that is the
problem) because it loses money to have energy delivered to a non-paying
load.

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

>From a Clearing in the Silicon Forest
Beaverton (Washington County) Oregon
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Re: [Elecraft] OT: RF interference from grow lights (maybe).

[ab2tc]

Hi Ralph and all,

Thanks for your response and I did receive several private E-mails as well.
It sounds like a phone call to the power company should be my next move. If
I just could find a way to get to a live person without going through a
million automated responses and interminable waits!

Loose connectors and clamps can apparently cause many different types of
interference so can not be ruled out in my case either. I have had several
cases like that over the years and they sounded and look quite different
from my current interference. But it sounds like nothing should be ruled
out. 

Thanks again, all.

AB2TC - Knut


RALPH TURK wrote
> Hi
> I had a similar situation here in Tucson AZ  My spectrum analyzer,a Tek
> 492 showed groups of carrier like indications 10-20 db above the noise
> floor.  First think I thought "Grow Lights"  I was told that the osculator
> in a grow light is about 2.3 Mhz.  The interference looked like it was
> every 2.3Mhz up the band.  Levels were all over the place.  Called the
> local Power Co and after lots of pleading they finally sent a tech to
> check it out.  He connected up to my dipole antenna and looked at the
> pattern and concluded it was a ground connection proble.  Got a crew out
> the next week and traced it to a pole out about 2000ft from me.  The
> problem was radiating 
> from the HV line for about 2 miles.  Fixed the ground and problem
> solved.  I had traced to one of three poles using a portable radio tuned
> the my main problem freq of about 5.2 Mhz and was able to hear the
> problem.  The main problem was a loose ground clamp up on the pole.  The
> power company also used an acoustic parabolic mike which pin-pointed the
> exact connector.  New connector problem solved
> Ralph, W7HSG/AFA9RT
>  
>> On 08/20/2020 7:07 PM ab2tc 

> ab2tc@

>  wrote:
>> 
> 





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Re: [Elecraft] OT: RF interference from grow lights.

[Harry Yingst via Elecraft]

 It could also be Metal Halide lights over someone's Saltwater Aquarium.
I run Metal Halide lights over my aquarium and mine are quiet.But I knew a guy 
who did not have his grounded and shieldedand they put out so much noise they 
wiped out his TV reception.
I gave him a bunch of snap on chokes and as I recallhe also grounded the 
reflectors and it quieted it down.





On Thursday, August 20, 2020, 09:09:03 PM EDT, ab2tc  
wrote:  
 
 Hello all,

https://www.edn.com/how-cops-are-finding-grow-ops-with-am-radios/

The above is a link to an article in the EDN magazine (a technical journal
primarily aimed at EEs). The article is more than five years old, but maybe
it is only recently this type of interference has started to show up in
upstate New York. I have one of these noise sources somewhere in my
neighborhood (it’s not that easy to pinpoint due to the low frequency). I
know this is OT and maybe somewhat controversial, but this type of strong
interference is of great concern to the amateur radio community. I am not
after anybody in my neighborhood getting arrested, but I very much want to
see the interference stop. Even if the operation is legal, the emission is
definitely way outside FCC part 15 limits. Quote from the article:

“..conducted emission data clearly shows peaks as high as 100+ dBuV (50 dB
over the limit) in the range 6 to 8 MHz, with lower peaks at 14, 18, and 21
MHz.”

My interference is primarily in the 7MHz band. 14 MHz is virtually free of
it. See here for a screenshot:

http://www.ab2tc.com/growlights.png

There are three peaks, approximately 49 to 50kHz apart. The center one is
centered under the cross hair cursor. As you can see, the band is starting
to come to life at about 2:30 in the afternoon. The interference is on 24/7
as far as I can tell.

Does anybody have any experiences like this and/or any suggestions what to
do? If you want to keep this confidential, E-mail me privately. My E-mail
address is OK on qrz.com.

AB2TC – Knut

PS. I have previously reported power line noise to the electrical company
and have had positive responses (fixes) from them. I suspect that this kind
of interference is not easily detectable on their UHF based sniffers;
besides I am not sure if conducted interference from residences lies under
their jurisdiction (there are only residences here for many blocks).





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Re: [Elecraft] CW Sidetone and Line Out?

[Dana Roode K6NR]

Wow thanks Bob.  I thought I was going nuts and wasn't sure where the
sidetone was coming from.  Seems odd that the normal mon control doesn't
affect this but I'm sure Elecraft had it's reasons.

Thanks again, Dana

On Thu, Aug 20, 2020, 4:35 PM Bob Wilson, N6TV  wrote:

> There's a special setting only documented in the K3 Firmware Release Notes
>  as follows:
>
> * TX LINE OUT (MONITOR) LEVEL NOW ADJUSTABLE: In CONFIG:LIN OUT menu
> entry, tap '2'  (REV switch) to set the "T=" level (TX monitor). Tap '2'
> again to return to the RX LINE OUT setting.
>
> So if you go to CONFIG:LIN OUT, then tap [2], you can change the sidetone
> (monitor) level.
>
> 73,
> Bob, N6TV
>
>
> On Wed, Aug 19, 2020 at 3:24 PM Dana Roode K6NR 
> wrote:
>
>> I typically use a telephone connection for receive audio from my remote K3
>> as its one less dependence on the crummy internet I have.  That broke
>> today
>> so I'm using audio over the Internet using DF3CB REMAUD program.  My CW
>> sidetone is loud no matter what I set "MON" too, and I've even
>> experimented
>> with the "LINOUT" configuration; setting it to 0 removes my receive
>> audio but not the sidetone.
>>
>> It seems sidetone is coming from LINOUT and I've not found a way to reduce
>> its amplitude.  Or I am not thinking about this right...
>>
>> Any suggestions?
>>
>>   Dana
>> __
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[Elecraft] KAT 500

[Howard Sherer]

The KAT 500 has been sold

Thanks for all the interest.

Howard
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Re: [Elecraft] KAT100 memory question

[Mike Kopacki]

Guess I missed that!  Checking now. 

Hmm. Bill, I just paged thru the entire manual and there is no mention of what 
you’re saying. 

Is it possible you have a newer manual?  This one is Revision C, March 12, 
2003. 

Thanks,
Mike NJ2OM 

> On Aug 21, 2020, at 11:30 AM, Nr4c  wrote:
> 
> Read the manual. There is a list of the frequency segments that can be 
> stored in the memory. It’s near the back of the manual.  Most bands are 20KHz 
> segments, so many for each band. 
> 
> Sent from my iPhone
> ...nr4c. bill
> 
> 
>> On Aug 21, 2020, at 8:47 AM, NJMike  wrote:
>> 
>> The KAT100 manual says that the tuner’s settings are stored in EEPROM. 
>> 
>> My question is - how many memories are stored?  Is it just one for each
>> band?
>> 
>> Thanks,
>> Mike NJ2OM 
>> 
>> 
>> 
>> --
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Re: [Elecraft] KAT100 memory question

[Nr4c]

Read the manual. There is a list of the frequency segments that can be stored 
in the memory. It’s near the back of the manual.  Most bands are 20KHz 
segments, so many for each band. 

Sent from my iPhone
...nr4c. bill


> On Aug 21, 2020, at 8:47 AM, NJMike  wrote:
> 
> The KAT100 manual says that the tuner’s settings are stored in EEPROM. 
> 
> My question is - how many memories are stored?  Is it just one for each
> band?
> 
> Thanks,
> Mike NJ2OM 
> 
> 
> 
> --
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Re: [Elecraft] KX3 buzz if power up on transverter band

[Drew Arnett]

Oscilloscope "screenshot" of the offending waveform:

https://drive.google.com/drive/folders/1-g9Met098lhncAcMtAAOvxWFDjf0NU_w?usp=sharing

Can anyone try to reproduce this to rule out or confirm my suspicion
it might be caused by firmware bug?

You can imagine how fast I knocked my headphones off!  :-O  :-)

Thanks and best regards,

Drew
n7da

On Wed, Aug 19, 2020 at 2:49 PM Drew Arnett  wrote:
>
> Hi,
>
> Weird problem.  Anyone else try this and do or don't see this?
>
> Just got my KX3 back from repair.  This included an upgrade to the
> latest firmware.  (Makes sense.  Requirement for production test.  I
> hadn't upgraded to the very latest, because I had no need for the
> latest improvements.)
>
> Set the radio back up for 10368 to 50 MHz transverter use on XVTR1
> band.  Now, if I power up the radio when it was shut down on the XVTR
> band, there is a crazy loud buzz on the audio output (and
> corresponding response of the S meter.)  If I switch to any other
> non-XVTR band and then power up, no problem even if switching then to
> the XVTR band.
>
> FW is now 2.90/1.52I got the radio back just before the 10 GHz
> contest, so only made minimal changes to settings from the cleared
> state it came back in.  Changes made:
> AFX mode off (was delay)
> ATU bypass (can't remember if it came back this way or not.  XVTR is
> good 50 ohm load.)
> BAT CHG off (was not inst)
> BKLIGHT off (was on)
> MIC BIAS off (I think came back on; used dynamic mic during contest)
> MIC BTN Ptt (was up/down)
> TX DLY 10 (was 5.  abundance of caution as 5 is more than enough for
> the 10 GHz rig I'm running)
> XV1 on
> XV1 RF 10368
> XV1 IF 50
> XV1 PWR 0.1
> XV1 OFS (set in field) 1.20
> XV1 ADR trn1
> set the clock.  :-)
> turned on the hidden in the menus CW-in-SSB feature
>
> I know I turned on or off a couple of front panel things as they left
> it.  Don't remember.  Stuff like vox, pre, nr or nb.  Definitely
> adjusted mic gain and compression and keyer speed.  :-)
>
> RX ISO changed to on during the contest, but problem occurs with it on or off
>
> What does the headphone jack output look like?  Power up in bad state.
> Set volume control to 20.  With no load other than 10X scope probe,
> the AC component is identical for left and right.  Tip has about 0 V
> DC offset.  Ring has about + 0.5 V DC offset.  AC component looks like
> a the differential of a square wave.  Peak to peak amplitude is 220
> mV.  (This follows volume control.  Didn't check to see if DC offset
> follows volume control.)  12.2 millisecond repetition rate for
> positive and negative pulses.  Negative pulse leads positive pulse by
> 2.2 ms, so 10 ms from positive pulse to negative.  Very small AC
> ripple on that with a period of about 0.4 ms.
>
> I was very happy to find a sequence to avoid the problem (as described
> above.)  To trouble shoot, I tried to rule out a number of things.
> Unplugged ALL cables from the KX3.  That did not resolve.  Tried
> external 12.4 V (battery on hand) and internal battery removed.  Tried
> internal battery (charged) and nothing plugged in.  No dice.
>
> Given that it's just back from repair, that sequencing gets it in a
> bad state, FW was upgraded to a new version, and audio path goes
> through FW, seems reasonable to ask if this is a known FW issue or if
> someone can try to reproduce this.
>
> Hoping to figure this out before the Sept VHF, the Sept 10 GHz contest
> weekend, and of course the HF contests coming up later this fall.  :-)
>  With my workaround, I was able to participate in the Aug 10 GHz
> weekend without interruption.  I ran a W1GHZ XVTR barefoot (+5 dBm
> Pout) for best DX of 379 km.  How much fun can you have with a KX3?
> Lots!  :-)
>
> Thanks and best regards,
>
> Drew
> n7da
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Re: [Elecraft] Tuna Can Kits

[Ian Kahn]

Victor,

I had some dealings with him a few years back, when my club used one of his
Tuna Can kits for a club kit build day. He was very generous and easy to
work with. He even donated some extra items to use as give-aways for club
members.

73 de,

Ian, NV4C

On Fri, Aug 21, 2020, 9:38 AM Victor Rosenthal 4X6GP 
wrote:

> Does anyone have experience with Rex Harper of Tuna Can Kits? He sells
> precut PCB pieces for Manhattan-style construction.
>
> Please respond off-list.
> Thanks!
> --
> 73,
> Victor, 4X6GP
> Rehovot, Israel
> Formerly K2VCO
> CWops no. 5
> http://www.qsl.net/k2vco/
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Re: [Elecraft] KAT 500 for sale

[w5sum]

I'll take it. Let me know

Ronnie W5SUM

-Original Message- 
From: Howard Sherer 
Sent: Friday, August 21, 2020 7:09 AM 
To: elecraft 
Subject: [Elecraft] KAT 500 for sale 


I have a like new KAT 500 for sale. $500. plus shipping from 18104

Howard AE3T
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Re: [Elecraft] OT: RF interference from grow lights.

[RALPH TURK]

Hi
I had a similar situation here in Tucson AZ  My spectrum analyzer,a Tek 492 
showed groups of carrier like indications 10-20 db above the noise floor.  
First think I thought "Grow Lights"  I was told that the osculator in a grow 
light is about 2.3 Mhz.  The interference looked like it was every 2.3Mhz up 
the band.  Levels were all over the place.  Called the local Power Co and after 
lots of pleading they finally sent a tech to check it out.  He connected up to 
my dipole antenna and looked at the pattern and concluded it was a ground 
connection proble.  Got a crew out the next week and traced it to a pole out 
about 2000ft from me.  The problem was radiating 
from the HV line for about 2 miles.  Fixed the ground and problem
solved.  I had traced to one of three poles using a portable radio tuned the my 
main problem freq of about 5.2 Mhz and was able to hear the problem.  The main 
problem was a loose ground clamp up on the pole.  The power company also used 
an acoustic parabolic mike which pin-pointed the exact connector.  New 
connector problem solved
Ralph, W7HSG/AFA9RT
 
> On 08/20/2020 7:07 PM ab2tc  wrote:
> 
>  
> Hello all,
> 
> https://www.edn.com/how-cops-are-finding-grow-ops-with-am-radios/
> 
> The above is a link to an article in the EDN magazine (a technical journal
> primarily aimed at EEs). The article is more than five years old, but maybe
> it is only recently this type of interference has started to show up in
> upstate New York. I have one of these noise sources somewhere in my
> neighborhood (it’s not that easy to pinpoint due to the low frequency). I
> know this is OT and maybe somewhat controversial, but this type of strong
> interference is of great concern to the amateur radio community. I am not
> after anybody in my neighborhood getting arrested, but I very much want to
> see the interference stop. Even if the operation is legal, the emission is
> definitely way outside FCC part 15 limits. Quote from the article:
> 
> “..conducted emission data clearly shows peaks as high as 100+ dBuV (50 dB
> over the limit) in the range 6 to 8 MHz, with lower peaks at 14, 18, and 21
> MHz.”
> 
> My interference is primarily in the 7MHz band. 14 MHz is virtually free of
> it. See here for a screenshot:
> 
> http://www.ab2tc.com/growlights.png
> 
> There are three peaks, approximately 49 to 50kHz apart. The center one is
> centered under the cross hair cursor. As you can see, the band is starting
> to come to life at about 2:30 in the afternoon. The interference is on 24/7
> as far as I can tell.
> 
> Does anybody have any experiences like this and/or any suggestions what to
> do? If you want to keep this confidential, E-mail me privately. My E-mail
> address is OK on qrz.com.
> 
> AB2TC – Knut
> 
> PS. I have previously reported power line noise to the electrical company
> and have had positive responses (fixes) from them. I suspect that this kind
> of interference is not easily detectable on their UHF based sniffers;
> besides I am not sure if conducted interference from residences lies under
> their jurisdiction (there are only residences here for many blocks).
> 
> 
> 
> 
> 
> --
> Sent from: http://elecraft.365791.n2.nabble.com/
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[Elecraft] Tuna Can Kits

[Victor Rosenthal 4X6GP]

Does anyone have experience with Rex Harper of Tuna Can Kits? He sells 
precut PCB pieces for Manhattan-style construction.


Please respond off-list.
Thanks!
--
73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/
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Re: [Elecraft] KAT 500 for sale

[CUTTER DAVID via Elecraft]

I would like that, would you sell outside USA?
David G3UNA

> On 21 August 2020 at 13:09 Howard Sherer  mailto:h...@lehigh.edu > wrote:
> 
> 
> I have a like new KAT 500 for sale. $500. plus shipping from 18104
> 
> Howard AE3T
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[Elecraft] KAT100 memory question

[NJMike]

The KAT100 manual says that the tuner’s settings are stored in EEPROM. 

My question is - how many memories are stored?  Is it just one for each
band?

Thanks,
Mike NJ2OM 



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[Elecraft] KAT 500 for sale

[Howard Sherer]

I have a like new KAT 500 for sale. $500. plus shipping from 18104

Howard AE3T
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