Re: [Elecraft] K4 eHam Review Updated

[Andrew Faber via Elecraft]

 Rick, and Bob, Thanks for the reviews.  I note that Rick started his off with 
a clever limerick. Here's another limerick in honor of both reviews: The K4 has 
been a long wait,
There's been lots of talk and debate.
  But its finally here,
  And the verdict is clear;
Reviewers say:"It's really great!" 

 73, Andy AE6Y 

On Saturday, April 24, 2021, 12:16:53 PM PDT, Rick Tavan  
wrote:  
 
 I've updated my K4 review on eham.net to correct a few errors and add a
section on User Interface. It should be available as soon as eHam vets the
new version to make sure I didn't include any politically incorrect words
or images. (I didn't.)  ;-)  And I bcc'ed a friend who is an eHam insider
and may be able to expedite that approval.

73,

/Rick N6XI

--

Rick Tavan
Truckee and Saratoga, CA
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Re: [Elecraft] Elecraft contact- K3 power problem

[Andrew Faber via Elecraft]

I had a similar problem with our K3/Astron PS atP40L-P49Y.  Removing the power 
cable from the back of the Astron and sanding the wires ends lightly (though no 
corrosion could be seen) solved the problem.
 73, andy ae6y

Sent from Mail for Windows 10

From: donov...@erols.com
Sent: Wednesday, March 17, 2021 6:22 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Elecraft contact- K3 power problem


Gordon, 


Have you verified that your power supply and DC power cable 
are delivering full voltage to your K3 when the K3 is set to deliver 
110 watts output? This is a frequent cause of low power output. 
Use the K3 internal voltmeter 


73 
Frank 
W3LPl 



-Original Message- 
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Gordon LaPoint 
Sent: Tuesday, March 16, 2021 3:53 PM 
To: elecraft@mailman.qth.net 
Subject: Re: [Elecraft] Elecraft contact 

I have a problem with my K3, only 60-70 watts out, even after calibration on 5 
and 50 watts. This is the first time I have had a problem with the K3, after 
years of good operation. I emailed support over a week ago and called them on 
the phone last week, still have not heard anything. What is the correct email 
for support?? 
Thanks, 
Gordon - N1MGO K3 #5651 


On 3/16/2021 15:33 PM, Paul Van Dyke wrote: 
> Lisa Jones retired 2+ years ago from Elecraft.. 
> She and Madelyn Gomez (made...@elecraft.com) were a team Madelyn Gomez 
> ... made...@elecraft.com and her team can help you today.. 
> 
> BUT go thru Support or Tech support 1st !! 
> as they take the load off the team and it works so much faster 
> 
> Paul Van Dyke - KB9AVO 
> 
> On Tue, Mar 16, 2021 at 3:22 PM Bob G3PJT  wrote: 
> 
>> David isnt this for you not me? 
>> 
>> 73 Bob 
>> 
>> On 16/03/2021 15:27, W2xj wrote: 
>>> Context? 
>>> 
>>> Sent from my iPad 
>>> 
 On Mar 16, 2021, at 9:59 AM, Bob G3PJT  wrote: 
 
 
 David 
 
 Try Lisa Jones, her email is sa...@elecraft.com and the other one 
 is 
>> pa...@elecraft.com 
 And the mod page which I found useful is 
 
 https://la3za.blogspot.com/search/label/K2 
 
 73 Bob 
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Re: [Elecraft] Arecibo antenna collapses

[Andrew Faber via Elecraft]

This is certainly getting way off topic on the Elecraft reflector, but I can’t 
resist mentioning that I have visited the FAST telescope in Guizhou Province.  
Here is a brief explanation from my trip notes (we were guests because my wife 
is an astronomer with many Chinese colleagues).  It’s odd that they are 
creating a tourist destination, since normally such telescopes are located to 
minimize RFI.

“We were met by a driver from FAST in a Honda Odyssey for the two-hour drive to 
Pingtang, China’s self-proclaimed “Astronomy City.”  There is a huge amount of 
new construction, as they try to take advantage of the FAST to create a tourist 
destination. There are new shops and hotels being built, and on the sides of 
the roads they even have statues and bas reliefs of famous scientists and 
scientific instruments.  FAST stands for “Five hundred meter Aperture Spherical 
radio Telescope,” and that’s just what it is – outdoing the 300-meter radio 
telescope at Arecibo, Puerto Rico by far.  It’s in a valley that had a dozen or 
so homes before they houses were demolished.  It’s 500 meters across, and is 
partly steerable, since the panels can be somewhat deformed by 4,000 actuators 
pulling on cables that tug on the panels that comprise the reflective surface.  
The receiving “cabin” is suspended on cables attached to six huge (maybe 
350-400 feet tall) towers.  So by moving the cabin and pulling on cables, they 
can apparently track through about 20 degrees, unlike Arecibo, which is fixed 
in a spherical shape.  The actuators that deform the mirror into a parabola are 
hydraulic and need only pull about a foot and a half or so on each cable.  
Although it was late, we drove down for a quick look at the telescope, since it 
wasn’t raining.  It’s an unbelievably impressive mechanical construct.  

73, andy ae6y

Sent from Mail for Windows 10

From: AB2E Darrell
Sent: Wednesday, December 2, 2020 8:54 AM
To: Elecraft Refl
Subject: Re: [Elecraft] Arecibo antenna collapses

I

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Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker Island

[Andrew Faber via Elecraft]

For one data point, when I got up for other reasons this morning at 2:20 
a.m., I turned on the radio, as I need KH1 on 160.  They were very solid 
copy on 1822.5, and easy to work, using my K3 and KPA500, with only an 
inverted vee for TX and RX.  I was surprised that they were solid copy, as 
that's not usually my experience on 160.

73, andy ae6y

-Original Message- 
From: Eric Swartz - WA6HHQ, Elecraft

Sent: Thursday, June 28, 2018 11:08 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] OT (sort of, but they use all Elecraft gear): Baker 
Island


Also look at: http://kh7z.net/
This appears to have the most real time official info.

They are running all K3S transceivers and KPA500's on all HF bands except 
160,

where they are running a KPA1500.


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Re: [Elecraft] Fwd: PTT switch for K3

[Andrew Faber via Elecraft]

DX Engineering sells several also.
73, andy ae6y

-Original Message- 
From: Rose

Sent: Monday, January 08, 2018 12:19 PM
To: Elecraft Reflector
Subject: [Elecraft] Fwd: PTT switch for K3

Music equipment stores usually have a variety of foot switches ...

73!

Ken - K0PP



Tattoo parlor foot pedals are rugged and cheap.  I had to swap out




for a longer cord but the switch itself is rugged and not too hard to
press.

https://www.amazon.com/Style-Tattoo-Pedal-Degree-Switch/dp/B
077WCXW7Z/ref=sr_1_3_sspa?ie=UTF8&qid=1515385276&sr=8-3-spon
s&keywords=tattoo+switch&psc=1

k4ia, Buck
K3# 101
Honor Roll  8B DXCC
EasyWayHamBooks.com


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Re: [Elecraft] PTT switch for K3

[Andrew Faber via Elecraft]

Although I haven't tried them, DX Engineering sells several.
73, andy ae6y

-Original Message- 
From: Bob via Elecraft

Sent: Monday, January 08, 2018 10:31 AM
To: John Marvin ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] PTT switch for K3

You might want to try an industrial supply company like here:


https://www.mcmaster.com/#pedal-switches/=1b1gd3p

I have used one of the "steel" types for many years.  The "iron types" are
really rugged but require, in my opinion, to much force to operate.  Mine 
dates

back to original use with my Heath SB400.

Untried but they have a PB pendant type too.

They are my go-to company for many items.  Located here in NJ and I can 
place a

6PM order and since I'm in the one day UPS zone get it the next afternoon.

73,
Bob
K2TK   ex KN2TKR (1956) & K2TKR



On 1/8/2018 4:25 AM, John Marvin wrote:
Thanks for this idea. I prefer a foot switch, and I've already had one of 
the Heil switches die on me in less than 2 years of use. Right now I'm 
using one I got from Radiodan.com. The owner is a member of my club, and I 
bought it at our annual HamFest. It looks to be of decent quality, but I 
don't know his source.  Anyway, if this one dies, I am definitely going to 
try a sustain pedal. They typically have a switch which switches the 
operation from on/off to a variable resistance (depending on what you are 
using it for). It should work fine for PTT operation in the on/off mode, 
and they are fairly rugged. I may have to try it soon just to see how one 
would feel in actual operation.


73,

John
AC0ZG

On 1/7/2018 1:01 PM, Alan wrote:
If you don't want to build something, check out a music store.  The kind 
of foot switch bands use is very rugged and reliable.


Alan N1AL


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Re: [Elecraft] Linear thoughts

[Andrew Faber via Elecraft]

Eric,
Hallelujah!  First acknowledgment of such a possibility!  I vote to put a 
second amp module in the RF Deck (i.e., an RF deck that is the same as the 
total size of the KPA500) and have a separate switching supply in another 
box. 1200-1300 watts would be a sweet spot if 1.5K is a problem.  Shoot for 
30 pounds or under.

73, andy ae6y (KPA500 ser. 77).

-Original Message- 
From: Eric Swartz - WA6HHQ, Elecraft

Sent: Friday, March 17, 2017 10:06 AM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Linear thoughts

Interesting discussion.

Folks, if we did introduce a 1500 W solid state amp similar to our KPA500 in
operation, what features etc would be important?

73,
Eric
/elecraft.com/


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[Elecraft] KPA-500 fix

[Andrew Faber via Elecraft]

I thought I would share a fix to my KPA-500 with the group in case someone 
else might have the same problem.
I have an old amp (two-digit serial number), and it has performed flawlessly 
until yesterday. Suddenly the Operate-Standby button stopped working, and 
then I noticed that other buttons worked, but did strange things.  The cure 
was simply to take off the front panel and reseat the two ribbon connectors. 
Actually I could only reseat the large connector at the panel end, and the 
small one at the board it plugs into in the main body.  The other end of the 
large connector is at the back of the amp and not accessible without 
considerable disassembly.  And the panel end of the small connector was 
stuck on so tight that I was afraid I would break something in removal.  But 
reseating 2 of the 4 possible connectors did the trick.  Now it seems to be 
back to normal.
 73, andy ae6y 


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Re: [Elecraft] great article on AGC by Fred Cady

[Andrew Faber via Elecraft]

Ian,
At P49Y, I also like to use SLP=0 for pileups, because then one can "ride" 
the RF Gain control to try to differentiate signals within a pileup. On the 
other hand, for casual operation, it is easier on your ears to use higher 
values of SLP in order to make the volume of signals more constant.  This 
also works better in a contest for the second radio if it is used for S&P on 
another band.

73, andy ae6y p49y

-Original Message- 
From: Cady, Fred

Sent: Wednesday, November 16, 2016 3:19 PM
To: glcazz...@alice.it ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] great article on AGC by Fred Cady


Hi Ian,

Most of my operating has been contesting and dealing with pileups.  I want 
to have the most discrimination or differences between different strength 
signals in the pile up.  And it would also like the radio to be as linear as 
possible.  So I would normally use a high threshold and SLP=0 (oddly, that 
is the steepest slope) so that loud signals sound loud and weak signals 
weak.  On the other hand, for rag chewing in a you might want all signals to 
sound pretty much alike.  Then choosing a low thr and slope=15 will flatten 
out the signals.



Don has some great ideas on setting AGC in his article, especially regarding 
noise.  It is easy to hear (and see) if  you have the THR set too low and 
noise is activating the AGC.  Tune to a noisy band and then start cranking 
THR down.  When you get too low you can easily hear the noise level 
decrease.  If you set up the dBV measurement you can actually measure the 
reduction in audio level.



73,

Fred KE7X


From: Elecraft  on behalf of Don Wilhelm 


Sent: Monday, November 14, 2016 4:16 PM
To: glcazz...@alice.it; elecraft@mailman.qth.net
Subject: Re: [Elecraft] great article on AGC by Fred Cady

Ian,

You might also want to look at the information on my website
www.w3fpr.com - Article on "Noisy K3" for more 
information about how to

adjust your AGC parameters for your particular tastes and band conditions.

73,
Don W3FPR

On 11/14/2016 5:19 PM, glcazz...@alice.it wrote:
Fred, I have seen your great article on AGC version 4.51 on your web 
page.I hadnt seen it before, my mistake.Now I have understood better how 
it work, THR and SLP, on K3/K3S.But, sorry, I repeat the question: what 
is/are the setting/settings that you prefer?For CW dx-ing and CW 
ragchewing, expecially.Thanks Ian IK4EWX



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