[Elecraft] K3 Uh-oh... won't turn off

[Drew AF2Z]

My K3 turns on whenever power is connected, without pushing the power 
button. When I push the power button to shut down the display clears but 
remains lit-- just a blank amber display. Can only turn on again by 
recycling the power supply; the K3 Power button has no effect. Otherwise 
the rig seems to operate normally.


I reloaded the firmware and config settings but that didn't help.

This occurred  after I replaced the FP plugs with the gold plated ones. 
I replaced the PA plugs about a week ago. All plugs are mated/seated 
correctly; good solder job.


Any ideas?

73,
Drew
AF2Z


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Re: [Elecraft] K3 Uh-oh... won't turn off

[Don Wilhelm]

Drew,

Do you have anything plugged into the AUX IO connector?  If so, remove 
it and try to power it down.
If that works, examine all the cabling to the AUX IO, that behavior is 
typical if AUX IO pin 8 is held low.


If you are using a VGA cable in the AUX IO connector, change it to a 
cable that has all 15 pins straight through.


73,
Don W3FPR

On 10/28/2017 3:55 AM, Drew AF2Z wrote:
My K3 turns on whenever power is connected, without pushing the power 
button. When I push the power button to shut down the display clears but 
remains lit-- just a blank amber display. Can only turn on again by 
recycling the power supply; the K3 Power button has no effect. Otherwise 
the rig seems to operate normally.



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Re: [Elecraft] K3 Uh-oh... won't turn off

[Drew AF2Z]

Don,

Thanks. No, there is nothing on the ACC connector but I'll check it out; 
maybe one of the plug pins I snipped ended up back there and is shorting 
the line? Seems unlikely but will check it out.


73,
Drew
AF2Z


On 10/28/17 07:51, Don Wilhelm wrote:

Drew,

Do you have anything plugged into the AUX IO connector?  If so, remove 
it and try to power it down.
If that works, examine all the cabling to the AUX IO, that behavior is 
typical if AUX IO pin 8 is held low.


If you are using a VGA cable in the AUX IO connector, change it to a 
cable that has all 15 pins straight through.


73,
Don W3FPR

On 10/28/2017 3:55 AM, Drew AF2Z wrote:
My K3 turns on whenever power is connected, without pushing the power 
button. When I push the power button to shut down the display clears 
but remains lit-- just a blank amber display. Can only turn on again 
by recycling the power supply; the K3 Power button has no effect. 
Otherwise the rig seems to operate normally.






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Re: [Elecraft] KLPA3A power transistor thermal stress concerns

[Clay Autery]

If anyone requires someone to assist in REALLY getting "nutty" about 
thermal control/dissipation on electronic components, I'd be happy to 
oblige from my experience.
I have had some fairly extensive hand-on experience.  Once upon a time, 
I invented Arctic Silver thermal compound and adhesive. Before, during, 
and after that time I spent thousands of hours working on custom thermal 
control solutions.


It's an addiction.

73,
Clay KY5G


On 10/27/2017 6:00 PM, Don Wilhelm wrote:

Bill is entirely correct.
Once in my prior career, I did a study of Mean Time Between Failure 
for IC circuits (same applies to transistors).  That study had to 
consider the case temperature of the IC (or transistor) with respect 
to the junction temperature.
The specification for the IC or transistor package will include a 
thermal resistance parameter, which must be considered to obtain the 
maximum temperature for the case of the device.


Bill's comment about the screw tightness is entirely correct - the 
heat of the device case must be transferred to the heatsink in an 
efficient manner.


73,
Don W3FPR

On 10/27/2017 6:07 PM, Nr4c wrote:
Yes. But I believe that is Junction temperature, not case on heatsink 
temp.  Remember the case bottom is heatsink for those. Make sure 
screws are tight.


Sent from my iPhone
...nr4c. bill



On Oct 27, 2017, at 12:19 PM, N2TK, Tony  wrote:

50C is not hot for a transistor. Commercial transistors are usually 
speced to 85C. JANS (space) transistors are speced to 125C and 
actually baked without bias for 320 hours at 200C. The hFE is 
measured before and after to check for change.

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Re: [Elecraft] Failing K3 at 3C0L

[K9MA]

While I've seen no evidence it was the cause of the 3C0L failures, I've always 
wondered how long those toroids supported only by their leads could survive 
vibration in transport.

73, 

Scott K9MA 

--

Scott Ellington

 --- via iPad

> 

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Re: [Elecraft] Failing K3 at 3C0L

[Matt Zilmer]

The COR probably kicked in.  The sub has its own protection for high 
input signal levels.


73,

matt W6NIA


On 10/27/2017 9:43 PM, Edward R Cole wrote:
I accidentally connected the wrong BNC connector to my Aux Ant jack 
with directly connects to my KRX3 IF and transmitted 28-MHz 1mw 
briefly into it.  Suffered no damage and still works. whew!


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com
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--
"A delay is better than a disaster."
-- unknown

Matt Zilmer, W6NIA
[Shiraz]

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Re: [Elecraft] Failing K3 at 3C0L

[Jeff Stai]

In a temp multi-op environment it's all to easy to make a mistake. During a
W1AW op I changed bands by stepping my way there and didn't go quick enough
to avoid pausing on an active band and fried my D5 extra crispy (that was a
fun repair). After that all band changes were strictly direct entry. 73
jeff wk6i


On Fri, Oct 27, 2017 at 12:02 PM, Dave Hachadorian 
wrote:

> Diode D5 on the KXV3 is one weak link.  A more robust replacement
> is available from Digikey for $0.42
> https://marc.info/?l=elecraft&m=145323127930319&w=2
>
> --
Jeff Stai ~ wk6i.j...@gmail.com
Twisted Oak Winery ~ http://www.twistedoak.com/
Facebook ~ http://www.facebook.com/twistedoak
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Re: [Elecraft] Failing K3 at 3C0L

[Don Wilhelm]

The testimony I can give for the toroids is that I built a K2 for a long 
haul truck driver.  It survived for several years in his truck with no 
failures.
The only reason he had for for taking it out of the truck was that he 
quit driving and got other employment.


73,
Don W3FPR

On 10/28/2017 11:26 AM, K9MA wrote:

While I've seen no evidence it was the cause of the 3C0L failures, I've always 
wondered how long those toroids supported only by their leads could survive 
vibration in transport.

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[Elecraft] KPA3

[Mike Weir]

Does anyone want to sell their KPA3 if they have upgraded to newer KPA3A? 
Mike 
VE3WDM 
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Re: [Elecraft] PA Transistors Maintenance in K2

[Cameron Francey]

A nice tip which I use when looking for anything in any sort of .pdf manual, 
Elecraft included as I have accumulated quite a number of them over time is to 
use the search feature on the .pdf reader.  Ctrl+f on WIndows and cmd+f on Mac 
and type what I'm looking for.  The index and contents tables are good, but 
obviously can't have everything in them, so I use the find feature a lot.


Hope this helps.


Regards, Cameron - AF7DK/GM7LQR



From: elecraft-boun...@mailman.qth.net  on 
behalf of Dauer, Edward 
Sent: Friday, October 27, 2017 8:15 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] PA Transistors Maintenance in K2

I vaguely remember reading somewhere that after some number of hours of 
operation – maybe 50 – the hardware holding Q7 and Q8 onto the heat sink should 
be tightened, I presume to maintain good heat conduction from the tabs to the 
sink.  But I can’t find that instruction in the manual now.  Anyone know where 
I might have gotten that notion, or did I just make it up?

Thanks,

Ted, KN1CBR


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Re: [Elecraft] PA Transistors Maintenance in K2

[Mel Farrer via Elecraft]

Ted,
 If the people at Elecraft have done their job and mounted the transistor 
properly with the correct torque on the mounting hardware procedure, no 
additional maintainance is required. I have been in the industry for a LONG 
time .  Three things to remember in the mounting of any RF or high power 
device.  Flat surfaces, minimual mating gu, and required torque. Lack of any of 
these will kill a device if not correct.  I have never required retorqueing 
parts, with one exception.   In 000 copper wire terminals, the copper does 
relax and needs to be retorqued to achieve a gas tight seal connection, but 
that is in industrial application.  Small RF devices only need the initial 
torque to be correct.

Mel, K6KBE

  From: Cameron Francey 
 To: "Dauer, Edward" ; "elecraft@mailman.qth.net" 
 
 Sent: Saturday, October 28, 2017 12:10 PM
 Subject: Re: [Elecraft] PA Transistors Maintenance in K2
   
A nice tip which I use when looking for anything in any sort of .pdf manual, 
Elecraft included as I have accumulated quite a number of them over time is to 
use the search feature on the .pdf reader.  Ctrl+f on WIndows and cmd+f on Mac 
and type what I'm looking for.  The index and contents tables are good, but 
obviously can't have everything in them, so I use the find feature a lot.


Hope this helps.


Regards, Cameron - AF7DK/GM7LQR



From: elecraft-boun...@mailman.qth.net  on 
behalf of Dauer, Edward 
Sent: Friday, October 27, 2017 8:15 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] PA Transistors Maintenance in K2

I vaguely remember reading somewhere that after some number of hours of 
operation – maybe 50 – the hardware holding Q7 and Q8 onto the heat sink should 
be tightened, I presume to maintain good heat conduction from the tabs to the 
sink.  But I can’t find that instruction in the manual now.  Anyone know where 
I might have gotten that notion, or did I just make it up?

Thanks,

Ted, KN1CBR


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Re: [Elecraft] PA Transistors Maintenance in K2

[Don Wilhelm]

Mel,

That is NOT true for the KPA100 power transistors - and it is not 
because of initial torquing.  The thermal pads take both time and heat 
to fully conform to the heatsink and any irregularities in the 
transistor surface.


BTW, with the KPA100, Elecraft has "done their job" when the parts are 
put into the box.  This is not sold as an assembled item - the builder 
must assemble it.


I tighten those screws on every KPA100 that I service.  I am amazed at 
the number I find loose.


73,
Don W3FPR

On 10/28/2017 3:24 PM, Mel Farrer via Elecraft wrote:

Ted,
  If the people at Elecraft have done their job and mounted the transistor 
properly with the correct torque on the mounting hardware procedure, no 
additional maintainance is required. I have been in the industry for a LONG 
time .  Three things to remember in the mounting of any RF or high power 
device.  Flat surfaces, minimual mating gu, and required torque. Lack of any of 
these will kill a device if not correct.  I have never required retorqueing 
parts, with one exception.   In 000 copper wire terminals, the copper does 
relax and needs to be retorqued to achieve a gas tight seal connection, but 
that is in industrial application.  Small RF devices only need the initial 
torque to be correct.

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Re: [Elecraft] PA Transistors Maintenance in K2

[Ross Primrose]

K2s are not factory assembled.

73, Ross N4RP

On 10/28/2017 03:24 PM, Mel Farrer via Elecraft wrote:

Ted,
  If the people at Elecraft have done their job and mounted the transistor 
properly with the correct torque on the mounting hardware procedure, no 
additional maintainance is required. I have been in the industry for a LONG 
time .  Three things to remember in the mounting of any RF or high power 
device.  Flat surfaces, minimual mating gu, and required torque. Lack of any of 
these will kill a device if not correct.  I have never required retorqueing 
parts, with one exception.   In 000 copper wire terminals, the copper does 
relax and needs to be retorqued to achieve a gas tight seal connection, but 
that is in industrial application.  Small RF devices only need the initial 
torque to be correct.

Mel, K6KBE

   From: Cameron Francey 
  To: "Dauer, Edward" ; "elecraft@mailman.qth.net" 

  Sent: Saturday, October 28, 2017 12:10 PM
  Subject: Re: [Elecraft] PA Transistors Maintenance in K2

A nice tip which I use when looking for anything in any sort of .pdf manual, Elecraft included as I have accumulated quite a number of them over time is to use the search feature on the .pdf reader.  Ctrl+f on WIndows and cmd+f on Mac and type what I'm looking for.  The index and contents tables are good, but obviously can't have everything in them, so I use the find feature a lot.



Hope this helps.


Regards, Cameron - AF7DK/GM7LQR



From: elecraft-boun...@mailman.qth.net  on behalf 
of Dauer, Edward 
Sent: Friday, October 27, 2017 8:15 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] PA Transistors Maintenance in K2

I vaguely remember reading somewhere that after some number of hours of 
operation – maybe 50 – the hardware holding Q7 and Q8 onto the heat sink should 
be tightened, I presume to maintain good heat conduction from the tabs to the 
sink.  But I can’t find that instruction in the manual now.  Anyone know where 
I might have gotten that notion, or did I just make it up?

Thanks,

Ted, KN1CBR


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--
FCC Section 97.313(a) “At all times, an amateur station must use the minimum 
transmitter power necessary to carry out the desired communications.”

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Re: [Elecraft] PA Transistors Maintenance in K2

[Ron D'Eau Claire]

The K2 is a kit built by the customer, not Elecraft. 

With respect, my experience is different from Mel's. In many years working 
electronics field and shop service industry have found that re-tightening 
hardware subjected to thermal stress is commonly required by manufacturers. 
Manufacturers routinely do that after a "burn in" period of testing before the 
unit leaves the factory. Elecraft customers are instructed to do it on some 
gear after a period of use. 

The rarity of failures in spite of many thousands of rigs in service suggests 
that Elecraft's recommendations are good ones. 

BTW, when Elecraft has found that a better than metal-to-metal thermal 
conduction is needed, they use thermal pads instead of thermal compounds. The 
pads are entirely adequate and avoid customers handling messy compounds. 

In commercial work, when a manufacturer specifies using a thermal compound, I 
use GC Type 44. It is a non-silicon based compound and so does not 'migrate' 
from where it was placed. My small tube has plenty left and it predates the 
computer "age" -  bought it sometime in the 1970's. Like the old Wildroot Cream 
Oil for hair they mean it when they say a "little dab will do ya" yet it 
remains flexible and never hardens. 

73 Ron AC7AC 

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mel Farrer via Elecraft
Sent: Saturday, October 28, 2017 12:24 PM
To: Cameron Francey; Dauer, Edward; elecraft@mailman.qth.net
Subject: Re: [Elecraft] PA Transistors Maintenance in K2

Ted,
 If the people at Elecraft have done their job and mounted the transistor 
properly with the correct torque on the mounting hardware procedure, no 
additional maintainance is required. I have been in the industry for a LONG 
time .  Three things to remember in the mounting of any RF or high power 
device.  Flat surfaces, minimual mating gu, and required torque. Lack of any of 
these will kill a device if not correct.  I have never required retorqueing 
parts, with one exception.   In 000 copper wire terminals, the copper does 
relax and needs to be retorqued to achieve a gas tight seal connection, but 
that is in industrial application.  Small RF devices only need the initial 
torque to be correct.

Mel, K6KBE


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Re: [Elecraft] K3 Uh-oh... won't turn off

[Nr4c]

Read your last paragraph and double check your work. 

Sent from my iPhone
...nr4c. bill


> On Oct 28, 2017, at 3:55 AM, Drew AF2Z  wrote:
> 
> My K3 turns on whenever power is connected, without pushing the power button. 
> When I push the power button to shut down the display clears but remains 
> lit-- just a blank amber display. Can only turn on again by recycling the 
> power supply; the K3 Power button has no effect. Otherwise the rig seems to 
> operate normally.
> 
> I reloaded the firmware and config settings but that didn't help.
> 
> This occurred  after I replaced the FP plugs with the gold plated ones. I 
> replaced the PA plugs about a week ago. All plugs are mated/seated correctly; 
> good solder job.
> 
> Any ideas?
> 
> 73,
> Drew
> AF2Z
> 
> 
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Re: [Elecraft] Using a quadcopter to hang an antenna

[Bill Johnson]

I don't have photos but my launcher is similar but the sprinkler valve is on 
the end and the "shooting" tube is on the end... not so compact. The overall 
length is 40" + and it is easy to aim.  The issue is how much air to use.  My 
air cavity is much shorter and I can do 70Lbs. with a bicycle pump.  I can do 
90+ lbs. and agree with the spider wire.  

73,
Bill
K9YEQ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of W0MU Mike Fatchett
Sent: Friday, October 27, 2017 10:53 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Using a quadcopter to hang an antenna

I built my own and chose the spiderwire fishing line.  Works great.  The 
fishing line is hard as heck to see  but super strong.  Goes over 100ft trees 
with no effort.


On 10/26/2017 10:55 PM, Benny Aumala wrote:
> GA,
>
> I have used CSV19 from:
>
> http://www.antennalaunchers.com/antlaunching.html
>
> Best way to use it is: one club-member has it and use it,
>
> but service is available for all members.
>
> This way the antenna will be launched OVER THE TREE.
>
> All styles have been tried: army launch, sling-shots, shotgus etc.
>
> This has been absolutely number one up to now.
>
> Hydrocopter is promising if used properly.
>
> Benny   OH9NB
>
>
> ---
> Avast Antivirus on tarkistanut tämän sähköpostin virusten varalta.
> https://www.avast.com/antivirus
>
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> w...@w0mu.com

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[Elecraft] Operating FT8 portable with KX3 - GPS time sync question

[Barry N1EU]

I don't know if very many portable ops out there are using FT8.  I'm
piecing together a portable FT8 setup for my KX3 and I'm hoping to use a
Bluetooth GPS receiver to provide accurate time sync to a Windows tablet.
If anybody out there is already doing this, can you please tell me what
software you're successfully running under Windows to link the GPS data
with the system time?

Thanks & 73,
Barry N1EU
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Re: [Elecraft] Operating FT8 portable with KX3 - GPS time sync question

[Don Wilhelm]

Barry,

I don't have a solution to the question as asked, however ...
Rather than trying to sync the clock real time, if you set the computer 
time at home just before your outing, it should be good for at least 72 
hours.


My laptop (used only for use while away from home) keeps accurate time 
within a second or so for a good long time (several days), and should be 
usable for FT8 use if set before an outing.  Your computer may not be as 
accurate, but I encourage you to check it.  As I understand it, FT8 can 
tolerate up to 1/2 second of timing error.


73,
Don W3FPR

On 10/28/2017 7:26 PM, Barry N1EU wrote:

I don't know if very many portable ops out there are using FT8.  I'm
piecing together a portable FT8 setup for my KX3 and I'm hoping to use a
Bluetooth GPS receiver to provide accurate time sync to a Windows tablet.
If anybody out there is already doing this, can you please tell me what
software you're successfully running under Windows to link the GPS data
with the system time?

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[Elecraft] hanging wire antenna

[Bill Heybruck]

 I now use an air cannon with 1/8 in nylon line. use bicycle pump to 
get 60 psi. goes where you want it.


here's my cheap one. use it when camping to raise my G5RV.

http://creativecomputersolutions.com/AIRCANNON.PDF

Bill


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Re: [Elecraft] Operating FT8 portable with KX3 - GPS time sync question

[Brian Hunt]

Google NMEATime. Haven't tried it myself but one of the local hams is, along 
with a USB GPS receiver. 

73,
Brian, K0DTJ
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Re: [Elecraft] PA Transistors Maintenance in K2

[Edward R Cole]

Don,

I ran my KXPA100 mobile for 5,000 miles to-Seattle and back to AK 
this spring.  Is there any advise for maint for extended mobile use?


73, Ed - KL7UW.
making 9,600 mile R/T summer of 2018.

From: Don Wilhelm 
To: "Dauer, Edward" ,"elecraft@mailman.qth.net"

Subject: Re: [Elecraft] PA Transistors Maintenance in K2
Message-ID: 
Content-Type: text/plain; charset=utf-8; format=flowed

Ted,

Not Q7 and Q8 in the base K2, but for the KPA100, yes tightening the
screws for Q1 and Q2 should be done after 5 to 10 hours of operation at
greater then 50 watts.

73,
Don W3FPR


73, Ed - KL7UW
  http://www.kl7uw.com
Dubus-NA Business mail:
  dubus...@gmail.com 


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Re: [Elecraft] Operating FT8 portable with KX3 - GPS time sync question

[Barry N1EU]

Thanks Brian, I just downloaded the trial version of NMEATime.

And to reply indirectly to Don: I checked my laptop clock's accuracy (HP
EliteBook) and it was terrible.  I had it syncing every 3 mins and saw
corrections as high as 0.3 seconds.  Add in the temperature variability of
being outdoors 0-30C, means it needs an external reference.  The GPS
receiver is a viable solution.

73, Barry N1EU

On Sat, Oct 28, 2017 at 11:49 PM, Brian Hunt 
wrote:

> Google NMEATime. Haven't tried it myself but one of the local hams is,
> along with a USB GPS receiver.
>
> 73,
> Brian, K0DTJ
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Re: [Elecraft] PA Transistors Maintenance in K2

[Don Wilhelm]

Ed,

I was speaking of the KPA100 amp for the K2.  I don't think the KXPA100 
needs any maintenance.


73,
Don W3FPR

On 10/28/2017 7:52 PM, Edward R Cole wrote:

Don,

I ran my KXPA100 mobile for 5,000 miles to-Seattle and back to AK this 
spring.  Is there any advise for maint for extended mobile use?

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Re: [Elecraft] Operating FT8 portable with KX3 - GPS time sync question

[Josh]

Yes, that! I set up NMEATime with a USB "puck" GPS receiver for EME with JT65 
on a Windows machine not internet connected. Works great. Easy to setup & super 
accurate. GPS antenna indoors sitting on a desk sync'd fine to multiple 
satellites. 

73
Josh W6XU

Sent from my mobile device

> 
> Google NMEATime. Haven't tried it myself but one of the local hams is, along 
> with a USB GPS receiver. 
> 
> 73,
> Brian, K0DTJ
> 

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Re: [Elecraft] Operating FT8 portable with KX3 - GPS time sync question

[Barry N1EU]

In case someone is ever searching this info, I just found a great thread on
this specific topic, only it was for the KX3 and JT65:
http://www.digitalhams.net/msgsdisp.php?parm=kx3-jt65-frequency-drift   I
also found some nice looking freeware software BktTimeSync to do the time
syncing: http://www.maniaradio.it/en/bkttimesync.html

73,
Barry N1EU

On Sat, Oct 28, 2017 at 11:58 PM, Josh  wrote:

> Yes, that! I set up NMEATime with a USB "puck" GPS receiver for EME with
> JT65 on a Windows machine not internet connected. Works great. Easy to
> setup & super accurate. GPS antenna indoors sitting on a desk sync'd fine
> to multiple satellites.
>
> 73
> Josh W6XU
>
> Sent from my mobile device
>
> >
> > Google NMEATime. Haven't tried it myself but one of the local hams is,
> along with a USB GPS receiver.
> >
> > 73,
> > Brian, K0DTJ
> >
>
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Re: [Elecraft] In praise of the sub Rx & Diversity

[lmarion]

I have been trying along time to get buyers to go for it and get the sub rx 
for its many pluses.  One that is kind of not obvious is the diversity 
receive. I knew about it from my years of working on FAA radars, and 
military search RADARs maintained by the FAA. All search radars from way 
back have diversity RX, because it will find those small target weak 
reflections. And some specialized diversity receive is being developed for 
those dog gone drones.  I have not measured the sensitivity of the K3s, but 
there are weak stations that are not heard when not in diversity. A friend 
in the city of Spokane can adjust the phase between his antennas and null 
out some strong RFI completely!


Leroy AB7CE

-Original Message- 
From: Bill Johnson

Sent: Thursday, October 26, 2017 7:56 PM
To: g...@ka1j.com ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] In praise of the sub Rx & Diversity

I use diversity on 20 meters with a vertical SteppIr and a loop.  Both are 
separated about 150'. What a difference.  Amazing.  Makes a huge difference 
with stations fading in and out and near the noise level.  I can work them 
with the Loop, but the vertical is so helpful when receiving.


73,
Bill
K9YEQ

-Original Message-
From: elecraft-boun...@mailman.qth.net 
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Gary Smith

Sent: Tuesday, October 24, 2017 10:38 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] In praise of the sub Rx & Diversity

When I bought the k3 in 09 I went all out and bought most of the accessories 
to go with it. One of these was the sub Rx and a full matching set of 
crystals for it. As upgrades happened I did them all and wasn't using the 
Sub Rx in diversity so much but, the advantage of the Sub Rx was always 
there with flexibility I take for granted.


So I upgrade to the K3s and migrated the sub Rx to it as well. I just don't 
think of diversity much but that was one of the reasons I bought the Sub Rx 
in the first place. With the 3 dB loss going to Diversity, I just listened 
more with the main receiver and let it go from there.


So today I'm working a ve7 on 10M and the band is going out. I can hear him 
but it's at that marginal iffy point, I was missing characters in his CW. I 
have a HI-Z triangular & a circle 8 pair of Rx antennas. The Circle 8 rocks 
on the low bands, has a filter to cut out above 40M but the triangular has 
no such filter and I often hear better on it than on the the roof mounted 
tribander. So for fun, I used diversity and the triangular on the sub,
160 sloper for the Tx antenna & Voilà, I heard him so much better, finished 
the Q and that reminded me of the real advantage of diversity and why it is 
an asset.


So now it's tonight, I see 3C0L is still on the air at around 3AM their 
time, on 20M. They're heading home today and the low band antenna is packed 
up already.
What troupers to still be in the game at this point. But I digress... So 
here they are, I don't have a good antenna for 20M, have to use the 160M 
antenna or tribander.
RFI from the neighbors makes the tribander useless so I hear them on the 
sloper and can hear them on the Hi-Z Triangular a bit better but much QSB so 
remembering the success with the VE7 earlier I go Diversity & all of a 
sudden, solid Q5 copy, no QSB and I snagged them on 20 CW.


Diversity really made the difference. I bought the K3s because it had such 
excellent specs, nothing else to me came close, save for 1-2 radios that in 
09 were hot and cost more than a new car. And they weren't any better in 
practicality than the K3 was. I bought the Sub Rx for the diversity and now 
today, while the K3s is itself stellar in all the right ways, it is an a 
better product with the Sub Rx.

I'm really honored to have such an
incredibly capable radio.

Just sayin'

73,

Gary
KA1J

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Re: [Elecraft] hanging wire antenna

[ktalbott]

I replaced the cap with a screw-in cleanout. I have two caps, one with Schrader 
valve for compressed air operation, the other drilled to accept grill lighter 
for hair spray (classic potato gun) operation.Ken ke4rgPS: Don't forget to 
leave valve open for potato gun operation!


Sent from my Samsung Galaxy smartphone.
 Original message From: Bill Heybruck  
Date: 10/28/17  7:43 PM  (GMT-05:00) To: Elecraft@mailman.qth.net Subject: 
[Elecraft] hanging wire antenna 
  I now use an air cannon with 1/8 in nylon line. use bicycle pump to 
get 60 psi. goes where you want it.

here's my cheap one. use it when camping to raise my G5RV.

http://creativecomputersolutions.com/AIRCANNON.PDF

Bill


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Re: [Elecraft] PA Transistors Maintenance in K2

[Bill Frantz]

The .pdf reader search function is an excellent way to find 
where the off-sheet connections go when reading the Elecraft schematics.


73 Bill AE6JV

On 10/28/17 at 12:08 PM, cameronfranceyut...@hotmail.com 
(Cameron Francey) wrote:


A nice tip which I use when looking for anything in any sort of 
.pdf manual, Elecraft included as I have accumulated quite a 
number of them over time is to use the search feature on the 
.pdf reader.  Ctrl+f on WIndows and cmd+f on Mac and type what 
I'm looking for.  The index and contents tables are good, but 
obviously can't have everything in them, so I use the find 
feature a lot.

-
Bill Frantz| When it comes to the world | Periwinkle
(408)356-8506  | around us, is there any choice | 16345 
Englewood Ave
www.pwpconsult.com | but to explore? - Lisa Randall | Los Gatos, 
CA 95032


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Re: [Elecraft] Operating FT8 portable with KX3 - GPS time sync question

[Stephen Shearer]

I also found (sometime back for the same function) 
http://www.visualgps.net/#nmeatime2-content ~$20 but neat extras


I am currently using "GPS Time" I purchased years ago for JT65 
portable/mobile for $10 - now out of business?


Thanks for the other links...

steve WB3LGC


On 10/28/2017 8:04 PM, Barry N1EU wrote:

In case someone is ever searching this info, I just found a great thread on
this specific topic, only it was for the KX3 and JT65:
http://www.digitalhams.net/msgsdisp.php?parm=kx3-jt65-frequency-drift   I
also found some nice looking freeware software BktTimeSync to do the time
syncing: http://www.maniaradio.it/en/bkttimesync.html

73,
Barry N1EU

On Sat, Oct 28, 2017 at 11:58 PM, Josh  wrote:


Yes, that! I set up NMEATime with a USB "puck" GPS receiver for EME with
JT65 on a Windows machine not internet connected. Works great. Easy to
setup & super accurate. GPS antenna indoors sitting on a desk sync'd fine
to multiple satellites.

73
Josh W6XU

Sent from my mobile device


Google NMEATime. Haven't tried it myself but one of the local hams is,

along with a USB GPS receiver.

73,
Brian, K0DTJ


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[Elecraft] Subject: PA Transistors Maintenance in K2

[Jan]

Having assembled the K2 kit in 1999 ~ over a period of some 6 weeks ~ do 
you suppose I should recheck the hardware now?


Happy HALLOWEEN . . . .  Jan, K1ND

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Re: [Elecraft] Subject: PA Transistors Maintenance in K2

[Don Wilhelm]

Jan,

If you have the KPA100 and have operated it for more than 5 hours at 
greater than 50 watts, then the answer is YES, take the KPA100 off the 
base K2, remove the shield and tighten the PA mounting screws.  a 1/8 
turn is normally all that it takes.


73,
Don W3FPR

On 10/28/2017 9:19 PM, Jan wrote:
Having assembled the K2 kit in 1999 ~ over a period of some 6 weeks ~ do 
you suppose I should recheck the hardware now?

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Re: [Elecraft] Using a quadcopter to hang an antenna

[Nr4c]

See my website at NR4C.net and look for Projects tab. 

Sent from my iPhone
...nr4c. bill


> On Oct 28, 2017, at 7:18 PM, Bill Johnson  wrote:
> 
> I don't have photos but my launcher is similar but the sprinkler valve is on 
> the end and the "shooting" tube is on the end... not so compact. The overall 
> length is 40" + and it is easy to aim.  The issue is how much air to use.  My 
> air cavity is much shorter and I can do 70Lbs. with a bicycle pump.  I can do 
> 90+ lbs. and agree with the spider wire.  
> 
> 73,
> Bill
> K9YEQ
> 
> -Original Message-
> From: elecraft-boun...@mailman.qth.net 
> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of W0MU Mike Fatchett
> Sent: Friday, October 27, 2017 10:53 AM
> To: elecraft@mailman.qth.net
> Subject: Re: [Elecraft] Using a quadcopter to hang an antenna
> 
> I built my own and chose the spiderwire fishing line.  Works great.  The 
> fishing line is hard as heck to see  but super strong.  Goes over 100ft trees 
> with no effort.
> 
> 
>> On 10/26/2017 10:55 PM, Benny Aumala wrote:
>> GA,
>> 
>> I have used CSV19 from:
>> 
>> http://www.antennalaunchers.com/antlaunching.html
>> 
>> Best way to use it is: one club-member has it and use it,
>> 
>> but service is available for all members.
>> 
>> This way the antenna will be launched OVER THE TREE.
>> 
>> All styles have been tried: army launch, sling-shots, shotgus etc.
>> 
>> This has been absolutely number one up to now.
>> 
>> Hydrocopter is promising if used properly.
>> 
>> Benny   OH9NB
>> 
>> 
>> ---
>> Avast Antivirus on tarkistanut tämän sähköpostin virusten varalta.
>> https://www.avast.com/antivirus
>> 
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>> w...@w0mu.com
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[Elecraft] Babies at play as seen on the P3

[Gary Smith]

Some months back I thought I saw some 
words on the SVGA output from the K3. So 
here I hear A73A calling in the contest 
and obscuring his signal was some bad QRM. 
I can't tell exactly where it is coming 
from but it seems like towards EU was 
strongest. 

It did not display on the P3 but the SVGA 
is much slower and shows longer capture 
and taking a photo of the the monitor, the 
print came out clearly. With the HI-Z 8 
Pro I was able to notch it almost 
completely out (95% out) but here's what 
it looks like. 

What are the children doing?

http://doctorgary.net/babiesatplay.jpg

It's been going on for a long time 
tonight.

73,

Gary
KA1J
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Re: [Elecraft] Failing K3 at 3C0L

[Richard Fjeld]

This may help readers understand what the energy can be like on a nearby 
antenna.  I was having a qso using my quarter wave inverted-L on 160 meters at 
100 watts, and at the same time building a tuner.  I went to connect the  
ladder line from my 80 meter loop that was not parallel to the L, but a wire 
from the loop crosses the L at 90 degrees about two feet above it at one point, 
otherwise nothing close.   I got an RF burn that had me yelling.  Not good 
separation, but I never considered the possibility of an RF burn with the 
separation I did have.

Rich, n0ce


From: Dave Hachadorian
Sent: Friday, October 27, 2017 2:05 PM
To: Reflector Elecraft
Subject: Re: [Elecraft] Failing K3 at 3C0L

Diode D5 on the KXV3 is one weak link.  A more robust replacement
is available from Digikey for $0.42
https://marc.info/?l=elecraft&m=145323127930319&w=2


Dave Hachadorian, K6LL
Yuma, AZ




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Re: [Elecraft] Babies at play as seen on the P3

[Matt Zilmer]

Many ops use the video feature of Fldigion some modes.  On one Navy MARS 
freq, when we changed modes, everyone TXing would post pre-video for a 
few transmissions.


When you switch from Thor to MFSK to etc, etc, etc. it is best to tell 
the other net ops what's up.  Conditions do change.  This is normal.


73,

matt W6NIA


On 10/28/2017 8:10 PM, Gary Smith wrote:

Some months back I thought I saw some
words on the SVGA output from the K3. So
here I hear A73A calling in the contest
and obscuring his signal was some bad QRM.
I can't tell exactly where it is coming
from but it seems like towards EU was
strongest.

It did not display on the P3 but the SVGA
is much slower and shows longer capture
and taking a photo of the the monitor, the
print came out clearly. With the HI-Z 8
Pro I was able to notch it almost
completely out (95% out) but here's what
it looks like.

What are the children doing?

http://doctorgary.net/babiesatplay.jpg

It's been going on for a long time
tonight.

73,

Gary
KA1J
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--
"A delay is better than a disaster."
-- unknown

Matt Zilmer, W6NIA
[Shiraz]

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Re: [Elecraft] Babies at play as seen on the P3

[GRANT YOUNGMAN]

It looks like Digital SSTV.  There is a “text” mode in a DRM SSTV app called 
Easypal (and maybe others), that sends brief text messages in the waterfall.

I’ve seen this show up from time to time, but was certainly curious the first 
time I saw text on my P3 screen :-)

> On Oct 28, 2017, at 11:10 PM, Gary Smith  wrote:
> 
> Some months back I thought I saw some 
> words on the SVGA output from the K3. So 
> here I hear A73A calling in the contest 
> and obscuring his signal was some bad QRM. 
> I can't tell exactly where it is coming 
> from but it seems like towards EU was 
> strongest. 
> 
> It did not display on the P3 but the SVGA 
> is much slower and shows longer capture 
> and taking a photo of the the monitor, the 
> print came out clearly. With the HI-Z 8 
> Pro I was able to notch it almost 
> completely out (95% out) but here's what 
> it looks like. 
> 
> What are the children doing?
> 
> 

Grant NQ5T
K3 #2091, KX3 #8342



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[Elecraft] Elecraft CW Net Announcement

[kev...@coho.net]

Good Evening,
   A very mild, dry week brought color changes to my elevation.  Lots 
of ferns turned gold and red with many other plants yellowing too.  I've 
done my best to modify the elk trails by clearing out dead trees.  They 
had better be patient because it will take another week to buck them all 
up.  With the forest becoming more open I should be able to see them 
more often.


The sun has a few tiny spots so we're dependent upon the solar wind to 
charge the ionosphere.  The forecasts predict them to increase on 
October 31 and again on November 9th & 10th.


Please join us tomorrow on:
   14050 kHz at 2200z Sunday (3 PM PDT Sunday)
    7045 kHz at z Monday (5 PM PDT Sunday)

    73,
    Kevin. KD5ONS

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