[Elecraft] Elecraft CW Net Announcement

[kev...@coho.net]

Good Evening,
   Walking through a temperate rain forest varies from following the 
game trails to breaking new ground.  When you step off the trails you 
can sink a foot or more into the pile of decomposing needles.  If you 
dig into that mass you’ll find a wide variety of fungi busy changing 
needles, dead plants, and branches into soil.  Due to our ecosystem most 
of the nutrients are either in the trees, the plants growing on and 
around the trees, or in that foot of decaying needles; little is 
available from the clay beneath the needle layer.  The number of fungal 
species in this space differs with the age of the stand.  100 year old 
stands of timber have a wide variety of species while younger areas have 
a great deal fewer.


   Some plants are dependent upon the order of the underlying mycelial 
mats.  While plants around a bog require the different acidic and basic 
layers to survive our local Calypso orchid needs a certain series of 
fungal layers to exist.  As my forest matures the diversity increases 
allowing me to look for mushrooms in more places.  As I cut the dead, 
standing trees I buck them in place and hand carry the chunks to a 
road.  The sawdust and slash are left in place as shelter for birds and 
rabbits and to feed the forest floor.  The best reward for my 
stewardship is when the Calypso orchids bloom in late May.  I get paid 
back for all of my careful wood moving.


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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[Elecraft] PX3 available ??

[Phil Hystad]

Is anyone selling a PX3?  If the price is right I am in the market for a used 
-- no -- scratch that, I am  the market for a previously owned PX3 in pristine 
condition.

Please contact off of the Elecraft reflector.

73, phil, K7PEH

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Re: [Elecraft] Just RX'd KX3 Serial No. 10,028!

[Walter Underwood]

Dang, over ten thousand KX3 shipments. I remember the thrill when mine arrived. 
Welcome to the club!

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

> On Nov 4, 2017, at 5:33 PM, JT Croteau  wrote:
> 
> I know this doesn't mean much to anyone but me but I've wanted one for
> so long.  Just received KX3 No. 10,028.  Shaves and haircuts coming
> soon.
> 
> Now I have to hit the sales boards to sell my old gear.
> 
> 73,
> N1ESE
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Re: [Elecraft] Just RX'd KX3 Serial No. 10,028!

[Bob McGraw K4TAX]

Congratulations!   Great radio. 

Bob, K4TAX


Sent from my iPhone

> On Nov 4, 2017, at 7:33 PM, JT Croteau  wrote:
> 
> I know this doesn't mean much to anyone but me but I've wanted one for
> so long.  Just received KX3 No. 10,028.  Shaves and haircuts coming
> soon.
> 
> Now I have to hit the sales boards to sell my old gear.
> 
> 73,
> N1ESE
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> 

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[Elecraft] Just RX'd KX3 Serial No. 10,028!

[JT Croteau]

I know this doesn't mean much to anyone but me but I've wanted one for
so long.  Just received KX3 No. 10,028.  Shaves and haircuts coming
soon.

Now I have to hit the sales boards to sell my old gear.

73,
N1ESE
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Re: [Elecraft] KPA100 100% Duty Cycle - Operating Temperature

[Bob McGraw K4TAX]

Digital modes lend themselves to lower power contacts successfully.  It gets 
messy for all when a station jumps in with excessive power.  I'm seeing more 
and more stations with poor to very poor quality signals.  It takes very little 
effort to be loud, but requires more effort and skill to be good. 

Bob, K4TAX


Sent from my iPhone

> On Nov 4, 2017, at 7:04 PM, Rick Bates (WA6NHC)  wrote:
> 
> Pffft.
> 
> Use only enough power to allow the completion of the contact.  Even if it’s 
> legal limit. 
> 
> It’s a common misconception.   
> 
> Rick WA6NHC
> 
> Smell Czech happens
> 
>> On Nov 4, 2017, at 4:59 PM, Lynn W. Taylor, WB6UUT 
>>  wrote:
>> 
>> 20 watts is a lot of power on PSK-31.
>> 
>> 10 watts is a lot of power on PSK-31.
>> 
>> 73 -- Lynn
>> 
>>> On 11/4/2017 3:55 PM, K1FFX wrote:
>>> I started running some 100% duty cycle operation with my KPA100 (PSK31 and
>>> Olivia).  I was running 20 watts ..
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Re: [Elecraft] KPA100 100% Duty Cycle - Operating Temperature

[Rick Bates (WA6NHC)]

Pffft.

Use only enough power to allow the completion of the contact.  Even if it’s 
legal limit. 

It’s a common misconception.   

Rick WA6NHC

Smell Czech happens

> On Nov 4, 2017, at 4:59 PM, Lynn W. Taylor, WB6UUT 
>  wrote:
> 
> 20 watts is a lot of power on PSK-31.
> 
> 10 watts is a lot of power on PSK-31.
> 
> 73 -- Lynn
> 
>> On 11/4/2017 3:55 PM, K1FFX wrote:
>> I started running some 100% duty cycle operation with my KPA100 (PSK31 and
>> Olivia).  I was running 20 watts ..
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Re: [Elecraft] KPA100 100% Duty Cycle - Operating Temperature

[Lynn W. Taylor, WB6UUT]

20 watts is a lot of power on PSK-31.

10 watts is a lot of power on PSK-31.

73 -- Lynn

On 11/4/2017 3:55 PM, K1FFX wrote:

I started running some 100% duty cycle operation with my KPA100 (PSK31 and
Olivia).  I was running 20 watts ..

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Re: [Elecraft] KPA100 100% Duty Cycle - Operating Temperature

[Don Wilhelm]

Bruce,

If you had the fan turn on at 20 watts, there is likely a problem.
Get an external wattmeter and check the actual power output.
I suspect the actual power is not controlled, and can exceed 150 watts.

The usual cause of that problem is damaged diodes D16 and D17 in the KPA100.

There will usually be no harm to the KPA100 PA transistors, but the PA 
transistors in the base K2 can be damaged because they are being 
stressed to produce their maximum output.


Also that condition is likely to give you a distorted signal, and with 
Data Modes that usually means a high IMD.


73,
Don W3FPR

On 11/4/2017 6:55 PM, K1FFX wrote:

I started running some 100% duty cycle operation with my KPA100 (PSK31 and
Olivia).  I was running 20 watts ... I'm not sure what power folks normally
run in these modes (I'd be happy to get feedback on that), but, in any case,
I was running well below the KPA100's 100 watt maximum.  After around 90
seconds, the little fan on the KPA100 kicked in and really rev'ed up.  The
heat sink was, not surprisingly, quite warm to the touch.

So, considering I was running at 20 watts, would that level of heat be
normal, i.e., was it actually no surprise that the fan kicked in?  And is
there any danger to the output transistors running key-down at the 20 watt
level?

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[Elecraft] KPA100 100% Duty Cycle - Operating Temperature

[K1FFX]

I started running some 100% duty cycle operation with my KPA100 (PSK31 and
Olivia).  I was running 20 watts ... I'm not sure what power folks normally
run in these modes (I'd be happy to get feedback on that), but, in any case,
I was running well below the KPA100's 100 watt maximum.  After around 90
seconds, the little fan on the KPA100 kicked in and really rev'ed up.  The
heat sink was, not surprisingly, quite warm to the touch.

So, considering I was running at 20 watts, would that level of heat be
normal, i.e., was it actually no surprise that the fan kicked in?  And is
there any danger to the output transistors running key-down at the 20 watt
level?

Thanks for any tips or insight.

Bruce K1FFX




-
Bruce Rosen
K1FFX
K2/100 6982 KSB2 KAT100-1

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[Elecraft] P3 Automatic Power On Failed

[K8TE]

After returning from a contest operation at KS5Z this past weekend, my P3
would not turn on when I applied 12VDC.  I checked the jumper and it was in
the correct place.  I moved and returned the jumper to 2-3 with no change. 
Re-loading the firmware did not help.  

I performed a parameter initialization to no avail.  I reloaded the current
firmware (which was installed prior to the parameter initialization--no
change.  Restoring the previous configuration didn't change anything.

Has anyone else noticed this anomaly?  If so, were you able to return your
P3 to "normal" operation where applying 12VDC put it into operation?  I
really like the idea of power on with 12VDC applied!  I use this with an APP
distribution panel that turns on the P3 and KAT500 when I turn on the K3. 
The next step is to power on the KPA500 at the same time.


-- 
73, Bill, K8TE




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Re: [Elecraft] Best way to connect K3, P3, Steppir, Acom 600s and PC

[WA6KEK]

Thanks for the replies; great suggestions!
I went with the ACC port for now. It is all working fine after a mini
debacle described below:
At first plugging in my newly made cable from the diagram on the ACOM
website, I only got "CAT error" on the ACOM 600s. Checked all my settings,
all good. Double checked my cable; all correct to the ACOM provided diagram.
Then I checked my cable with the K3 manual and found that I had BAND2 OUT on
pin 10 on the K3 side while the K3 manual says pin 9 is the one to use.
Double checked the ACOM diagram and it depicts pin 10. Read the text on the
ACOM diagram and it says to use pin 9. Switched to pin 9 and all works
correctly. Sent an email to ACOM to let them know about the error. Note that
ACOM support has been excellent.

Below is the diagram V1.2 from the ACOM 600s download page on the ACOM
website. 
Note the text for BAND2 OUT is correct for the K3 side with pin 9; the
diagram incorrectly shows pin 10. 
V1.0 and V1.1 text matches the diagram for BAND2 OUT.


 




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