Re: [Elecraft] CW bands hopping up through 10 m...

[Paul GACEK via Elecraft]

Maybe but with 100s of field activations under my belt this felt different!!

I’m still routing for a spectacular cycle 25.

Paul

> On Nov 28, 2020, at 7:18 PM, Jim Brown  wrote:
> 
> On 11/28/2020 5:23 PM, PAUL GACEK via Elecraft wrote:
>> lack of noise
> 
> That probably had as much to do with your SOTA QTH being noise-free and the 
> antenna you were using as to propagation.
> 
> 73, Jim K9YC
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[Elecraft] 1/2 Elecraft CW Net Announcement

[kevinr]

Good Evening,

   It almost got sunny today, then a wall of fog passed over. Now the 
moon is partly visible above the fog.  This week I saw a group of deer 
browsing their way through that foggy day.  I did not know they ate 
sword fern.  Those stay green all winter, the other ferns feed the 
soil.  New crops of mushrooms.  The cooler weather chooses different 
species.


  Propagation is pretty good when the sun cooperates.  SFU at 106.  It 
seemed stuck at 70 for over a year, now it has jumped. The sunspot 
groups are getting large again too.  The auroral oval is not too big.  
However, there is a major contest going on.  I expect that to improve 
conditions all by itself.  They should be having fun with the sun this 
active.  It also means I will cancel the 20 meter net.  The 40 meter net 
begins half an hour after the close of CQ Worldwide DX contest.



Please join us tomorrow on:

 7047 kHz at 0030z Monday  (4:30 PM PST Sunday)

73,

   Kevin. KD5ONS


-



Fate is not without a sense of irony

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Re: [Elecraft] CW bands hopping up through 10 m...

[Jim Brown]

On 11/28/2020 5:23 PM, PAUL GACEK via Elecraft wrote:

lack of noise


That probably had as much to do with your SOTA QTH being noise-free and 
the antenna you were using as to propagation.


73, Jim K9YC
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Re: [Elecraft] CW bands hopping up through 10 m...

[PAUL GACEK via Elecraft]

Hi Wayne

I did a couple of SOTA activations earlier today in the Eastern Sierras with my 
ever trusty KX2.

I had some voice contacts on 17m to Hawaii and back east that were the best 
quality (clarity, lack of noise) that I have heard in ages. I hope Cycle 25 
turns out to be a gem.

Paul Gacek
W6PNG/M0SNA
www.nomadic.blog

> On Nov 28, 2020, at 1:24 PM, Wayne Burdick  wrote:
> 
> ...due to both CQ WW and sunspots. Hearing lots of DX as well as stateside 
> SOTA operators at the same time on 10 m. 20 and 15 m are blazing.
> 
> Enjoy!
> 
> Wayne
> N6KR
> 
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Re: [Elecraft] K3- Replacement 12-Volt Power Cable

[Jim Brown]

On 11/28/2020 11:57 AM, RVZ via Elecraft wrote:

Please advise what options I have for purchasing replacement 12-Volt power 
supply cables for the K3 with the power connector already attached.


Power Pole connectors come in MANY sizes -- different housings, 
different inserts. The 15A and 30A inserts are pretty easy to install if 
you buy the inserts the fit the wire. The 30A inserts are good up to 
#12. The 45A inserts are needed for #10, and they are VERY tricky to 
install. I've installed many hundreds of Power Poles, all soldered.


The caution about where to buy them is very good advice.

BTW -- the red/black zip cord is NOT ideal for use around RF. Twisted 
pair is FAR better, because twisting strongly resists differential mode 
RF pickup.


73, Jim K9YC
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Re: [Elecraft] Gud place to sell rigs?

[Kurt Pawlikowski]

Lou,

    I have had some good experiences buying amateur stuff via eBay, but 
I've not sold things through them. I've also had good experiences with 
eHam and Craig's List, but you are dealing with people directly there 
(let the buyer beware!). You might want to contact your local ham club 
for local places to sell your equipment. They may also have some good 
places in mind to sell.


    k WB9FMC

On 11/28/2020 6:02 PM, Louandzip via Elecraft wrote:

There's eBay of course, but anything better and more focused on high quality 
stuff?  I've been out of circulation for a while so don't know what other 
options there may be.  Not Elecraft, btw, as I'm not ever going to sell my K2, 
K1 and related items.

Lou W7HV
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[Elecraft] Gud place to sell rigs?

[Louandzip via Elecraft]

There's eBay of course, but anything better and more focused on high quality 
stuff?  I've been out of circulation for a while so don't know what other 
options there may be.  Not Elecraft, btw, as I'm not ever going to sell my K2, 
K1 and related items. 

Lou W7HV
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Re: [Elecraft] [K2] Odd AGC problem with K60XV installed

[Don Wilhelm]

Bill,

It is also a mystery to me that it is intermittent rather than a solid 
failure.  That might imply that something is breaking into oscillation 
and overwhelming the VRFDET line.  That is why I suggested you check the 
component placement and the diode orientation.
That intermittent condition can also be caused by a soldering problem 
that takes some time to appear.


For the non-transverter bands, it is only necessary that the 4.7pF 
capacitor be in the circuit and that relay K1 be in the reset position.


If you hear a relay click when this problem starts, then look to the 
firmware on the K60XV to make sure all its related components are in 
place - there are not many.  If you do hear the relay click, one thing 
you can do is to arbitrarily replace the resonator.  While I have never 
seen an intermittent resonator (dead one = yes), it is one possibility.


73,
Don W3FPR

On 11/28/2020 5:59 PM, Bill Coleman wrote:

Thanks, Don, I’ll check it out when I have a chance next week. I appreciate 
your suggestions. At the moment, the K60XV and the K2 are about 35 miles apart….




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Re: [Elecraft] [K2] Odd AGC problem with K60XV installed

[Bill Coleman]

Thanks, Don, I’ll check it out when I have a chance next week. I appreciate 
your suggestions. At the moment, the K60XV and the K2 are about 35 miles apart….

> On Nov 28, 2020, at 5:53 PM, Don Wilhelm  wrote:
> 
> Bill,
> 
> You might want to inspect the K60XV soldering carefully for bridges and 
> anything unsoldered.
> 
> When this fault condition occurs, what is the voltage on K60XV P1 pin 6.  If 
> VRFDET becomes active during receive, the K2 may behave as you describe 
> because the firmware 'thinks' the K2 is transmitting.  The fact that you do 
> not see it on the transverter bands further amplifies my thoughts on the 
> source of the problem being the VRFDET signal.
> 
> I cannot think of a component problem that would create your condition, so 
> that is why I asked you to review the soldering.  Look at the component 
> placement too - make sure all the components are in the right hole and not in 
> a nearby via hole.  Check D3 and D4 for proper orientation.
> 
> 73,
> Don W3FPR
> 
> On 11/28/2020 5:21 PM, Bill Coleman wrote:
>> A few weeks ago, I managed to cobble enough of the parts together to build a 
>> K60XV. It came together great, and works both on 60m as well as a base for a 
>> transverter.
>> I thought that would have been the happy end of the story, except I’ve had 
>> some odd trouble with it installed. I saw this briefly the day after the SS 
>> CW contest, and on the second day of the SS Phone contest. In each case, 
>> removing the K60XV solved the problem and it did not recur.
>> Here’s what I’ve observed. After leaving the K2/100 turned on for several 
>> hours, the rig is in receive mode, but the AGC is fully activated, with all 
>> ten bars showing on the S-meter. The receiver audio is entirely blanked.
>> This condition is intermittent and random. It tends to last for several 
>> seconds to many minutes. It happens on all bands at the same time EXCEPT it 
>> does NOT happen on any TRN band that is configured (I have one configured 
>> for 50 MHz/28 MHz). This lead me to believe the K60XV was involved. During 
>> the SS Phone, I removed the K60XV and replaced it with a Re-work eliminator 
>> and K2/100 and the rig worked just fine for the next 10 hours.
>> During the last three days, I opened the K2 up and laid the KPA100 on the 
>> workbench and left the K2 powered up with the K60XV installed. The problem 
>> manifested itself within hours. I was able to run a few diagnostics.
>> The AGC activation happens in all all AGC modes, SLO, FAST and OFF. I was 
>> able to get a scope probe on the emitter of Q12 on the Control board. When 
>> the blanking occurs, I see a train of pulses around 2 mS apart - around 500 
>> Hz.

Bill Coleman, AA4LR, PP-ASELMail: aa...@arrl.net
Web: http://boringhamradiopart.blogspot.com
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901

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Re: [Elecraft] [K2] Odd AGC problem with K60XV installed

[Don Wilhelm]

Bill,

You might want to inspect the K60XV soldering carefully for bridges and 
anything unsoldered.


When this fault condition occurs, what is the voltage on K60XV P1 pin 6. 
 If VRFDET becomes active during receive, the K2 may behave as you 
describe because the firmware 'thinks' the K2 is transmitting.  The fact 
that you do not see it on the transverter bands further amplifies my 
thoughts on the source of the problem being the VRFDET signal.


I cannot think of a component problem that would create your condition, 
so that is why I asked you to review the soldering.  Look at the 
component placement too - make sure all the components are in the right 
hole and not in a nearby via hole.  Check D3 and D4 for proper orientation.


73,
Don W3FPR

On 11/28/2020 5:21 PM, Bill Coleman wrote:

A few weeks ago, I managed to cobble enough of the parts together to build a 
K60XV. It came together great, and works both on 60m as well as a base for a 
transverter.

I thought that would have been the happy end of the story, except I’ve had some 
odd trouble with it installed. I saw this briefly the day after the SS CW 
contest, and on the second day of the SS Phone contest. In each case, removing 
the K60XV solved the problem and it did not recur.

Here’s what I’ve observed. After leaving the K2/100 turned on for several 
hours, the rig is in receive mode, but the AGC is fully activated, with all ten 
bars showing on the S-meter. The receiver audio is entirely blanked.

This condition is intermittent and random. It tends to last for several seconds 
to many minutes. It happens on all bands at the same time EXCEPT it does NOT 
happen on any TRN band that is configured (I have one configured for 50 MHz/28 
MHz). This lead me to believe the K60XV was involved. During the SS Phone, I 
removed the K60XV and replaced it with a Re-work eliminator and K2/100 and the 
rig worked just fine for the next 10 hours.

During the last three days, I opened the K2 up and laid the KPA100 on the 
workbench and left the K2 powered up with the K60XV installed. The problem 
manifested itself within hours. I was able to run a few diagnostics.

The AGC activation happens in all all AGC modes, SLO, FAST and OFF. I was able 
to get a scope probe on the emitter of Q12 on the Control board. When the 
blanking occurs, I see a train of pulses around 2 mS apart - around 500 Hz.


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[Elecraft] [K2] Odd AGC problem with K60XV installed

[Bill Coleman]

A few weeks ago, I managed to cobble enough of the parts together to build a 
K60XV. It came together great, and works both on 60m as well as a base for a 
transverter.

I thought that would have been the happy end of the story, except I’ve had some 
odd trouble with it installed. I saw this briefly the day after the SS CW 
contest, and on the second day of the SS Phone contest. In each case, removing 
the K60XV solved the problem and it did not recur.

Here’s what I’ve observed. After leaving the K2/100 turned on for several 
hours, the rig is in receive mode, but the AGC is fully activated, with all ten 
bars showing on the S-meter. The receiver audio is entirely blanked. 

This condition is intermittent and random. It tends to last for several seconds 
to many minutes. It happens on all bands at the same time EXCEPT it does NOT 
happen on any TRN band that is configured (I have one configured for 50 MHz/28 
MHz). This lead me to believe the K60XV was involved. During the SS Phone, I 
removed the K60XV and replaced it with a Re-work eliminator and K2/100 and the 
rig worked just fine for the next 10 hours. 

During the last three days, I opened the K2 up and laid the KPA100 on the 
workbench and left the K2 powered up with the K60XV installed. The problem 
manifested itself within hours. I was able to run a few diagnostics.

The AGC activation happens in all all AGC modes, SLO, FAST and OFF. I was able 
to get a scope probe on the emitter of Q12 on the Control board. When the 
blanking occurs, I see a train of pulses around 2 mS apart - around 500 Hz. 

I tried poking a finger around various places on the K60XV board to try to 
exacerbate the problem. I wasn’t able to determine anything conclusive, 
although a couple of times I thought something in the vicinity of the K2 relay 
might be involved. 

I’m completely dumbfounded by this problem. There’s nothing in the K60XV that 
interconnects with the AGC system in any way. What could possibly be going on 
here?

Bill Coleman, AA4LR, PP-ASELMail: aa...@arrl.net
Web: http://boringhamradiopart.blogspot.com
Quote: "Not within a thousand years will man ever fly!"
-- Wilbur Wright, 1901

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[Elecraft] CW bands hopping up through 10 m...

[Wayne Burdick]

...due to both CQ WW and sunspots. Hearing lots of DX as well as stateside SOTA 
operators at the same time on 10 m. 20 and 15 m are blazing.

Enjoy!

Wayne
N6KR

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Re: [Elecraft] K3- Replacement 12-Volt Power Cable

[Ron Manfredi]

Dick,

Powerwerx is a company that sells Power Poles, but be aware that on Ebay 
you might find Power Pole 'copies,' not the originals mad by the 
Anderson company.


As for power ratings, yes, there are different power ratings, but the 
15, 30 and 45 Amp versions all use the same plastic housing, which means 
they will connect with one another.   Only the actual metal contactors 
are different sizes.


If your K3 is around 3-6  feet from the power supply then the 12 Gauge 
wire should be fine.   For longer runs, you might want to consider a 10 
Gauge cable due to the voltage drop.   For some good info on them, go to 
the Powerwerx site here:


https://powerwerx.com/help/powerpole-connectors


73,

Ron   WA2EIO


On 11/28/2020 2:57 PM, RVZ via Elecraft wrote:

Hi Guys,

Please advise what options I have for purchasing replacement 12-Volt power supply 
cables for the K3 with the power connector already attached.  Do groups like DX 
Engineering and HRO sell them?  Also, does the K3 use Anderson Powerpole connectors 
or Powerwerx connectors, or are they the same?  I believe both types of connectors 
may come in different amperage ratings, so what amperage do I need to mate with the 
K3? TNX & 73, Dick- K9OM
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Re: [Elecraft] K3- Replacement 12-Volt Power Cable

[Don Wilhelm]

Dick,

You can order the power cable from Elecraft.
The part number is KPCA-F, it has an APP connector on one end and ring 
terminals on the other end.  The wire is 12 guage.


73,
Don W3FPR

On 11/28/2020 2:57 PM, RVZ via Elecraft wrote:

Hi Guys,

Please advise what options I have for purchasing replacement 12-Volt power supply 
cables for the K3 with the power connector already attached.  Do groups like DX 
Engineering and HRO sell them?  Also, does the K3 use Anderson Powerpole connectors 
or Powerwerx connectors, or are they the same?  I believe both types of connectors 
may come in different amperage ratings, so what amperage do I need to mate with the 
K3? TNX & 73, Dick- K9OM

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[Elecraft] K3- Replacement 12-Volt Power Cable

[RVZ via Elecraft]

Hi Guys,

Please advise what options I have for purchasing replacement 12-Volt power 
supply cables for the K3 with the power connector already attached.  Do groups 
like DX Engineering and HRO sell them?  Also, does the K3 use Anderson 
Powerpole connectors or Powerwerx connectors, or are they the same?  I believe 
both types of connectors may come in different amperage ratings, so what 
amperage do I need to mate with the K3? TNX & 73, Dick- K9OM 
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Re: [Elecraft] KX3 separate rx/tx antenna switch

[Dale Boresz]

I've been using this device for a couple of years, and it works very well.
I use the Pixel loop (or some other rx-only antenna) as the receive
antenna, and the RTR-2 switches the radio between the two antennas
while using either full QSK or semi-breakin keying.

<
https://www.dxengineering.com/search/product-line/dx-engineering-rtr-2-modular-receive-transmit-interfaces?autoview=SKU=rtr2=BestKeywordMatch=Ascending
>

73,
Dale - WA8SRA


On Sat, Nov 28, 2020 at 9:57 AM Ian Liston-Smith 
wrote:

> Many of us have separate receive antennas - often active loops etc. -
> because out transmit antenna picks up too much noise. Does Elecraft have a
> changeover device that switches between the two fast enough not to damage
> an active rx antenna? Specifically for the KX3? Could the ACC 1 or 2 be
> used for this? Thanks.
>
> PS: I have this option for the K2 and it's very useful.
>
> 73,
>
> Ian, G4JQT
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[Elecraft] FS: Elecraft K3S

[Steve Sykes]

Elecraft K3S HF/6 Meter 100 watt transceiver. Excellent condition, works
as it should. Full options, factory built.

K3S, KPA3A, KAT3A, KBPF3A, K3EXREF, KDVR3, KRX3A, KXV3A, K144XV
2.7K, 400hZ, 6K 8 pole filters for primary and second receiver.

With box, manuals, power cable and Fred Cady manual.

$3200 or best offer. Prefer local pickup but can ship at buyers expense
or drive some distance to meet for transfer.

Thank you for looking.
73 Steve KD2OM

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Re: [Elecraft] Sunspots!?!?

[Rich NE1EE]

On 2020-11-26 20:30:-0700, Robert Cunnings wrote:
>
>The article has a link to the paper, it's worth reading.Bob NW8L

I am partly through this paper. What may not be obvious at a glance are the 
statistics and math that underlie the analysis. I may as well be in for a 
penny, in for a pound. I had thought before reading this paper that there is a 
good reason to think that the sunspot activity will approach 250, +- a really 
big window. This is only slightly higher than McIntosh's 233. I think that I 
disagree with his model, but agree with his math and his conclusions. I 
encourage anyone who has an interest here to read the various papers. They will 
not be casual reading.

I have had many successes and failures over the years. One thing that seems to 
put me in a smaller class of physicists is that I don't mind being wrong. I am 
passionate and enthusiastic about my beliefs, and ready to change them 
immediately upon seeing proof that I am wrong. A while back I was pursuing a 
particular math approach to finding (mumble, mumble, space plasma physics), and 
one of the senior PhDs said that "some really f*** smart people" had developed 
another approach, and I'd better spend my time understanding what they did, 
rather than go off in a different direction. My math later replaced that 
alternate approach. You need not think that this implies that I am any brighter 
than any one here, but that it points to a closed mindedness that really 
surprises me in the scientific community. One of my friends is fond of saying 
that he thinks I am bright enough to have 2 brains...one the size of a BB, and 
other just a tiny thing ;-) I appreciate the humor. We can also be
  found in public venues declaring to one another (wink, wink) that we are so 
smart that our IQs are not just in the 90s, they are in the /high/ 90s ;-)  I 
have seen many insights come from folks with the equivalent of HS diplomas, and 
don't place much stock on the "paper" I have filed somewhere. That's why it's 
not on my wall.

At any rate, we will all hold our breaths. Even if Cycle 25 is a banner cycle, 
my rotating-spinning-toroid sun model may not be correct. I can live with that 
;-) And the cycles are good cycles-bad cycles, because what might be good for 
hams will certainly be cause for concern for those operating satellites and 
orbiting people containers. Now back to our regularly scheduled entertainment...

~R~
72/73 de Rich NE1EE
The Dusty Key
On the banks of the Piscataqua 

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[Elecraft] KX3 separate rx/tx antenna switch

[Ian Liston-Smith]

Many of us have separate receive antennas - often active loops etc. - because 
out transmit antenna picks up too much noise. Does Elecraft have a changeover 
device that switches between the two fast enough not to damage an active rx 
antenna? Specifically for the KX3? Could the ACC 1 or 2 be used for this? 
Thanks.

PS: I have this option for the K2 and it's very useful.

73,

Ian, G4JQT
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