[Elecraft] K4 to KPA500?

[Doug Faunt N6TQS +1-510-717-1197]

I see an app note about connecting the K3 to to a KPA500/KAT500.
As I prepare for my K4, is there any difference in the interconnections?
73, doug
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Re: [Elecraft] Subject: Waaay OT: A new kind of QRM to be aware of ... warning issued by FCC today

[Doug Faunt N6TQS +1-510-717-1197]

There was a case a while back where a ham had his license pulled because he
was convicted of telecom fraud.
IIRC, the FCC said it was evidence that he was unwilling to follow the
rules.
And I think it only came visible because he protested, or filed to get it
reinstated.
I suspect Phil can recall more details.
It's been a while.
73, doug

Date: Mon, 18 Jan 2021 10:07:51 -0800
From: Phil Kane 
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Subject: Waaay OT: A new kind of QRM to be
aware of ... warning issued by FCC today

On 1/18/2021 6:10 AM, Steve Hall wrote:
> During my hamming of over 50 years, the FCC has never felt it necessary to
> threaten hams not to break the law, that is not until we have this new
> administration coming into control.  My concern is what they will define
in
> the future as criminal acts.
That's because up to now it was unthinkable that licensed hams would use
amateur radio in the commission of crimes.  The law and the enforcement
apparatus always was there, though, and was used without any publicity.
We're going through violent times now and it's sad that such a notice
had to be issued.  Violators can't say that they weren't warned.

73 de K2ASP - Phil Kane
Elecraft K2/100   s/n 5402
(30 year veteran of FCC Field Enforcement)
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Re: [Elecraft] OT: Now: shipboard callsigns, was: W vs K broadcast station callsigns,

[Doug Faunt N6TQS +1-510-717-1197]

>From the FCC ULS:
KOHZ is assigned to The U. S. Coast Guard.Vessel Information:Ship
name: Oliver Hazard Perry Ship number: 1257224 Licensed to: Oliver
Hazard Perry Rhode Island

On Thu, Oct 8, 2020 at 3:34 PM Mike Morrow  wrote:
>
> >You can have a licensed radiotelegraph station, OR
> >you can have small boats with permanent radio installations.
> >In 2014/5 I got OLIVER HAZARD PERRY the callsign KOHZ by citing that rule 
> >when
> >we did our original application, and installed radios in our small boats.
>
> Interesting.  There is currently no vessel of that name nor record of a 
> vessel with callsign KOHZ in the ITU maritime callsign database.
>
>   https://www.itu.int/mmsapp/ShipStation/list
>
> Mike / KK5F
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Re: [Elecraft] OT: Now: shipboard callsigns, was: W vs K broadcast station callsigns,

[Doug Faunt N6TQS +1-510-717-1197]

It turns out there are TWO ways you can get a 4 letter call for a
shipboard station-
You can have a licensed radiotelegraph station, OR
you can have small boats with permanent radio installations.
In 2014/5 I got OLIVER HAZARD PERRY the callsign KOHZ by citing that rule when
we did our original application, and installed radios in our small boats.

And as lagniappe, when BOUNTY was foundering in late October of 2012,
the master was licensed as KD4OHZ, and we used the Winlink station on board
with his callsign to communicate with the USCG by email.
I've always wondered if the former callsign was related to the latter. since
both boats were in the same category as sailing school vessels, and someone
at the FCC picked up on that.  But probably not.
73, doug
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[Elecraft] Military use of Elecraft gear?

[Doug Faunt N6TQS +1-510-717-1197]

Maybe here- 
https://www.forbes.com/sites/davidaxe/2020/08/10/us-marines-can-beat-the-chinese-navy-but-only-if-the-marines-can-stay-hidden/

73, doug
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[Elecraft] GCaptain discovers ham radio

[Doug Faunt N6TQS +1-510-717-1197]

GCaptain, a website for professional mariners, has discovered ham radio:
https://gcaptain.com/watch-the-resurgence-of-amateur-radio-a-silver-lining-of-covid-19/
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[Elecraft] Updating K3?

[Doug Faunt N6TQS +1-510-717-1197]

I have K3 #22, the second K3 ordered, and the first delivered.
I want to upgrade it as much as practical, given that I'm not being
very active, and it's a good size
for taking along on possible trips.  I'm working on an interesting
trip on a traditional vessel.
I have the Cady book on upgrading; a new interface, antenna and
transverter interface,
two synthesizers, the general coverage filters mods, stainless steel
screws, and a couple of small things.
I don't know if the PA power connection parts are in the stash, but
that should be easy.

Cady's book says it's not known at the time he wrote this if other
things are worth doing, but that book is
from 2015.
So is there a document, or consensus, about what else should be done?
73, doug
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[Elecraft] More on 1E for FD, QRP K3?

[Doug Faunt N6TQS +1-510-717-1197]

Does the K3 cut off the 100W PA when the power is set to QRP levels?  Or am
I conflating that with the K2?
I'm looking to run 1E for FD without spending too much on a battery.
Although a big battery and/or using the KX3 are beginning to look more
attractive.

I wish I had the marginal size 31 battery I took out of HARVEY GAMAGE last
summer, but that was 9 months ago and in Maine.
73, Doug

73, Doug
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[Elecraft] K3 on battery?

[Doug Faunt N6TQS +1-510-717-1197]

How well does the K3 work with lower power supply voltage, such as
from a deep cycle battery after some hours of use?
I'm looking at resurrecting my station for FD, as 1E.
Relearning the K3 would probably be easier than learning the KX3.
73, doug
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[Elecraft] OT: The Colpitts mystery

[Doug Faunt N6TQS +1-510-717-1197]

I took the commercial tests in '69. I seem to recall having to learn
the various oscillator circuits.
I was an ATN2 on night check in VA-125 in Lemoore, CA.
The night check AT shop Chief wanted to get his 2nd class
Radiotelephone so he could work
on aircraft electronics when he retired, so he had the whole night
check shop studying.
I'd been doing electronics and radio for a number of years, so I was
teaching everyone.
A bunch of us went up to Fresno for the exam and I was the first one
done.  I was also the only one
who got a 1st Radiotelephone, the rest got 3rd at best, even the Chief.
I managed to pick up a broadcast endorsement in SC after I got out,
and then many years later
when I started sailing on tall ships, I heard about GMDSS, so studied
that and added GMDSS Operator/Maintainer
with a Radar endorsement on top of the GROL that my 1st had turned
into.  It turns out, for international
compliance, the USCG required a STCW-approved course to add GMDSS to
my Merchant Mariners Credential,
so I had to do a 10-day course, with practical evaluations, and essay
questions! So I did that, arguing with the
instructor the whole time, simce I gave correct answers, but not what
he expected.  The other three people
in the course dropped out quickly- their company had sent them, but
they actually didn't need it on their MMC.
73, doug
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Re: [Elecraft] Source for K3 weighted knobs

[Doug Faunt N6TQS +1-510-717-1197]

I put a bit of bicycle inner tube on my VFO-B and it did the trick.

On 1/18/2017 8:27 PM, Chortek Bob via Elecraft wrote:

Honestly VFO A is perfect with the neoprene ring, but VFO B is a just a tad too 
small and needs a neoprene ring too, IMHO.  For my taste, a neoprene ring for 
VFO B would solve the size issue.  But then, I am just a user of the product.  
:-)
73,
Bob/AA6VB

  From: Wayne Burdick 
 To: Harry Yingst 
Cc: Elecraft Reflector 
 Sent: Tuesday, January 17, 2017 10:36 AM
 Subject: Re: [Elecraft] Source for K3 weighted knobs

Both the stock VFO A knob and VFO B knob are weighted. The VFO A knob also has 
a soft-touch rubber ring.

I have to admit I'm a little baffled as to why any different knobs would be 
desirable. We tried to optimize for both function and aesthetics. But hey, I'm 
just an engineer :)

Wayne
N6KR



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[Elecraft] Powder coat texture on Elecraft gear

[Doug Faunt N6TQS +1-510-717-1197]

Hi,
Does the satin black powder-coating match Elecraft?

I'm working on a addition to my KX-3 station, and now have access to 
powder-coating equipment, but don't have access to samples of various 
samples right now.


Some of you have figured this out, I'm sure.

73, doug

BTW, I've been out-of-touch, and have 25000+ email messages in the 
Elecraft and KX3 mail directories.  And that's after catching up a bit.




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[Elecraft] OT: sorta- Sugru for potting and making custom lumpy cables

[Doug Faunt N6TQS +1-510-717-1197]

I want to make some custom cable sets for my KX3, K3, etc, etc.
I like the idea of potting connectors on cables (first did it repairing 
Navy aircraft in the late 60's).
It looks as if sugru will do a good job of this, is readily available 
and not particularly messy.

Have people here tried this?  Did it work well?
thanks, doug
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Re: [Elecraft] PX3 on K3?????

[Doug Faunt N6TQS +1-510-717-1197]

Hm, K3 to LP-PAN (or Softrock) to PX3? IIRC, at least one person has cut 
down a P3 to be physically smaller for travel.

73, doug

On 10-Jun-14 21:53, Alan Bloom wrote:

On 06/10/2014 12:38 PM, Eric Ross wrote:

So  how are they different other than cosmetic attributes?


The input to the P3 is an IF signal, 8.215 MHz in the case of the K3.
The input to the PX3 is an I/Q baseband signal so that it can work with
the KX3.

Within the limitations imposed by that, we tried to make the
functionality of the PX3 as identical to the P3 as possible.

Alan N1AL

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Re: [Elecraft] [KX3] Re: 4 metre module (70 Mhz) module possible for the KX3

[Doug Faunt N6TQS +1-510-717-1197]

As I sit here on a flight about to arrive at LHR, the question arises-is 
it possible or likely, to have the KXPA-100 work on 4m?

73, doug
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Re: [Elecraft] KAT500 serial cable

[Doug Faunt N6TQS +1-510-717-1197]

I'd been looking at cheap and dirty between another TTL level device to 
the KX3 (I presume the KXPA100 is similar).  The KX3 schematic looks as 
if the putput may go as high as +12V, but a series resistor and diode 
clamp at +5V should protect a TTL equivalent input.  I used to know good 
values, but it's been a long time since I messed with this. But a 2K2 
series resistor, and a Schottky diode clamp should win, but that's just 
what leaps to mind, please check your application.


Don has indicated that the significant circuit is an Elecraft 
standard, but I wouldn't mind getting verification that the KXPA100 is 
the same.

73, doug


On 19-Jan-14 15:46, Don Wilhelm wrote:

Jean,

I mis-spoke.  I do not have the schematic for the KAT500. but the
circuit for the RS-232 interface used in the XG3 has become sort of
the standard at Elecraft as far as I know.  I initially said it went to
+5 volts, but after checking I see it can go to +9 volts. If your
Ardrino TTL compatible sink cannot accept +9 volts without damage, you
should use the RS-232 connection.  It will work fine with relatively
short cables (but not the very long cables supported by real RS-232
interfaces).

73,
Don W3FPR

On 1/19/2014 6:14 PM, F4GXG wrote:

OK,
In fact I planned to use  a MAX232 because I though that it was necessary
for the kat500.
At the end it seems that the kat500 is TTL compatible,   so it should be
easier to connect with an Arduino.
If I am right, a direct connection should be possible, without MAX232.
Anyone to confirm?
73 Jean
73



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Re: [Elecraft] KAT500 serial cable

[Doug Faunt N6TQS +1-510-717-1197]

If you're bit-banging, you can do the inversion in your software.
73, doug

On 19-Jan-14 18:39, Jack Brindle wrote:

Consider using a MAX232 anyway. The signals need to be inverted to be 
compatible with standard UART interfaces. So even if the protective diodes 
work, an inverter is needed to get the signals to the proper levels.

Jack B, W6FB


On Jan 19, 2014, at 6:03 PM, Doug Faunt N6TQS +1-510-717-1197 fa...@panix.com 
wrote:


I'd been looking at cheap and dirty between another TTL level device to the KX3 
(I presume the KXPA100 is similar).  The KX3 schematic looks as if the putput 
may go as high as +12V, but a series resistor and diode clamp at +5V should 
protect a TTL equivalent input.  I used to know good values, but it's been a 
long time since I messed with this. But a 2K2 series resistor, and a Schottky 
diode clamp should win, but that's just what leaps to mind, please check your 
application.

Don has indicated that the significant circuit is an Elecraft standard, but I 
wouldn't mind getting verification that the KXPA100 is the same.
73, doug


On 19-Jan-14 15:46, Don Wilhelm wrote:

Jean,

I mis-spoke.  I do not have the schematic for the KAT500. but the
circuit for the RS-232 interface used in the XG3 has become sort of
the standard at Elecraft as far as I know.  I initially said it went to
+5 volts, but after checking I see it can go to +9 volts. If your
Ardrino TTL compatible sink cannot accept +9 volts without damage, you
should use the RS-232 connection.  It will work fine with relatively
short cables (but not the very long cables supported by real RS-232
interfaces).

73,
Don W3FPR

On 1/19/2014 6:14 PM, F4GXG wrote:

OK,
In fact I planned to use  a MAX232 because I though that it was necessary
for the kat500.
At the end it seems that the kat500 is TTL compatible,   so it should be
easier to connect with an Arduino.
If I am right, a direct connection should be possible, without MAX232.
Anyone to confirm?
73 Jean
73



--
View this message in context:
http://elecraft.365791.n2.nabble.com/KAT500-serial-cable-tp7579847p7583091.html

Sent from the Elecraft mailing list archive at Nabble.com.
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Re: [Elecraft] new K3 owner

[Doug Faunt N6TQS +1-510-717-1197]

My perception is that the JIS drivers are the best fit for Elecraft 
screws. I've never gotten a response from Elecraft about their choice of 
drivers.

73, doug

On 18-Jan-14 16:03, Gary Smith wrote:

Absolutely true. Same for Japanese motorcycles which I repair, JIS is
the only screwdriver to use on those screws.  As Charlie said, they
are ID'd by the dot on the head.

Gary
KA1J


If you're REALLY serious about using the right tools, and do any
service
work on Japanese radios, you might want to buy a set of JIS
(Japanese
Industrial Standard) screwdrivers.  The cross drive is different
from the
Phillips or Frearson (Reed  Prince).  Compatible screw heads are
usually
identifiable by a single depressed dot or an X to one side of the
cross
slot. This is a screw standard throughout the Asia market and
Japanese
imports. The driver has a 57° point with a flat tip.

73, Charlie k3ICH



- Original Message -
From: Phil Hystad phys...@mac.com
To: WILLIS COOKE wrco...@yahoo.com
Cc: elecraft@mailman.qth.net
Sent: Saturday, January 18, 2014 1:02 PM
Subject: Re: [Elecraft] new K3 owner


ditto on the high quality screwdrivers...

And, replace them every now and then because even high-quality will
become
worn over the years.  You want the flutes to have nice clean sharp
edges --
any rounding at all (which is common on poor quality new
screwdrivers) will
result in stripped screw heads more often.

Also, you can take a file (I use a saw sharpening file, triangular)
and
clean up those old screwdrivers.

73 phil K7PEH


On Jan 18, 2014, at 8:06 AM, WILLIS COOKE wrco...@yahoo.com
wrote:


Be sure you have good tools!.  Buy a new, high quality #1 Phillips

Screw

Driver and use it.  Round up all the Reed and Prince cheap

screwdrivers

that you bought at the bargain store and preferably throw them

away, if

not keep them with the punches, that is all they are good for.

Buy a

static mat, read the instructions and use it.  Read the

construction

manual from front to back.  If you don't understand them, read

them again

and again until you do.  If you still don't understand them, get

help

until you do.  Before you do anything read the appropriate part

again so

you really know what to do.  Follow the instructions in the order

the

manual prescribes and be sure you understand each step.  When you

need to

plug in a part, make sure that you have the right plug and socket

then use

as much force as required to seat the plug fully.  When assembling
something, if it will not go, loosen some screws so you can move

it a

little then be sure to
tighten them before you go on.  There is no magic formula, just be

careful

and forget the hi-hi until you are sending Morse.  It is easy, but

every

step is important and must be done correctly.

Willis 'Cookie' Cooke, TDXS DX Chairman
K5EWJ  Trustee N5BPS, USS Cavalla, USS Stewart



From: Carl Yaffey cyaf...@gmail.com
To: elecraft@mailman.qth.net
Sent: Friday, January 17, 2014 3:11 PM
Subject: [Elecraft] new K3 owner


Hi. I´ve just ordered a K3 kit. Any suggestions for putting it

together

properly? Yes, I know to be very careful - hi hi.
73,
Carl Yaffey  K8NU
Banjo, guitar, bass, mandolin, dobro.
recording studio.
cyaffeyno_s...@gmail.com
614 268 6353, Columbus OH
http://www.carl-yaffey.com
http://www.grassahol.com







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Post: 

Re: [Elecraft] [KX3] New Super Antenna Design for KX3!!!

[Doug Faunt N6TQS +1-510-717-1197]

Last month, Wayne mentioned this, and I just checked. 
http:/newsuperantenna.com is up and looks very interesting.

Check it out.

On 12-Dec-13 21:40, Wayne Burdick wrote:

I've seen Vern's new antenna, and it's quite cool. Breaks down into pieces small enough 
to put into my KX3 mini-expedition bag (the Think Tank Strobe Stuff).

Unfortunately the web site isn't up yet, but I'm sure Vern will have it running 
soon.

Wayne
N6KR


On Dec 12, 2013, at 9:27 PM, superantennas2002 w6...@wavecable.com wrote:


Dear Group, Vern W6MMA here with some exciting news! Check out the new MP1 Mini 
antenna for the KX3! Pictures or located in the Superantennas Album. This 
antenna covers 40 thru 6 Meters. . .Good for 100 Watts.

New website coming soon.. vernssuperantennas.com !!!

For pre Orders call us at 916-434-9225. . .








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Re: [Elecraft] {OT} WW2DEM

[Doug Faunt N6TQS +1-510-717-1197]

It was actually the traitorous eight.
To get more of the story, and what happened after, find the movie 
Something Ventured, available on the web.

And you can look for me in one of the photos.  I'm unlabeled, though.
73, doug


On 09-Jan-14 16:52, Capell Joseph wrote:



Sent from my iPhone


On Jan 9, 2014, at 1:50 PM, Fred Jensen k6...@foothill.net wrote:


On 1/9/2014 9:52 AM, WILLIS COOKE wrote:
I did the same for USS Stewart with a TS-440 but they changed
management and threw me out along with the TS-440.  I think they
wanted me to modify the TBL to a modern SSB Transceiver or prove that
TS-440s were used by the US Navy in WW2.


The RMHS out here on the western frontier has a story regarding the radio console from a 
Victory ship that they were going to restore. Somewhere during the Vietnam War, some call 
signs and frequencies had been penciled on one of the front panels.  Their first thought 
was to scrub them off and clean up the panel however the museum curators gave a firm 
No.  The somewhat crude notes were part of the history of the console and as 
far as I know, they remain to this day.  Museum curators are very sensitive to things 
like that.

Modifying a TBL to SSB would be a very interesting project! :-))

  I am pretty sure that even

the Japanese Navy did not have them in WW2 because Western Electric
did not invent the transistor until 1948.


Actually, it was Bell Labs ... a team led by William Shockley.  He ultimately 
made his way to what would become Silicon Valley and founded Shockley 
Semiconductor Labs.  The Bell Labs work was primarily point-contact 
semiconductors and Shockley worked more to develop junction devices.  
Unfortunately, he was a domineering boss with a side dish of paranoia, and 
people found him impossible to work for/with.  At one point, a large number of 
his staff [17 or so if I remember correctly] resigned en masse and moved over 
to what would become Fairchild Semiconductor.  All told, engineers and 
scientists from Shockley labs founded well over 50 Silicon Valley companies.

In the latter half of his life, he became exceedingly controversial, adhering 
to theories of eugenics and, as a Nobel Laureate, managed to bring a lot of 
notoriety on himself.  I know all of this because here in Auburn CA, we have 
Shockley Dr., Shockley Ct., and Shockley Cir.  After his death and the death of 
his wife, a final bequest from his estate was 20+ acres of undeveloped land 
along Shockley Dr. to our local parks and recreation district.  Auburn isn't 
very big and excitement sort of resembles the solar cycle [every 11 years or so 
:-)] so the bequest initiated a civic uproar about accepting the land given his 
racist views since the bequest required that the land be named in his and his 
wife's honor.  The district finally accepted the land, I believe it is recorded 
in their name, and no plaque or monument will ever appear.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

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Re: [Elecraft] {OT} WW2DEM

[Doug Faunt N6TQS +1-510-717-1197]

After you've watched that, you'll be really glad Wayne and Eric didn't 
have to get venture capital for this jewel of a company.

73, doug


On 09-Jan-14 19:10, Doug Faunt N6TQS +1-510-717-1197 wrote:

It was actually the traitorous eight.
To get more of the story, and what happened after, find the movie
Something Ventured, available on the web.
And you can look for me in one of the photos.  I'm unlabeled, though.
73, doug


On 09-Jan-14 16:52, Capell Joseph wrote:



Sent from my iPhone


On Jan 9, 2014, at 1:50 PM, Fred Jensen k6...@foothill.net wrote:


On 1/9/2014 9:52 AM, WILLIS COOKE wrote:
I did the same for USS Stewart with a TS-440 but they changed
management and threw me out along with the TS-440.  I think they
wanted me to modify the TBL to a modern SSB Transceiver or prove that
TS-440s were used by the US Navy in WW2.


The RMHS out here on the western frontier has a story regarding the
radio console from a Victory ship that they were going to restore.
Somewhere during the Vietnam War, some call signs and frequencies had
been penciled on one of the front panels.  Their first thought was to
scrub them off and clean up the panel however the museum curators
gave a firm No.  The somewhat crude notes were part of the history
of the console and as far as I know, they remain to this day.  Museum
curators are very sensitive to things like that.

Modifying a TBL to SSB would be a very interesting project! :-))

  I am pretty sure that even

the Japanese Navy did not have them in WW2 because Western Electric
did not invent the transistor until 1948.


Actually, it was Bell Labs ... a team led by William Shockley.  He
ultimately made his way to what would become Silicon Valley and
founded Shockley Semiconductor Labs.  The Bell Labs work was
primarily point-contact semiconductors and Shockley worked more to
develop junction devices.  Unfortunately, he was a domineering boss
with a side dish of paranoia, and people found him impossible to work
for/with.  At one point, a large number of his staff [17 or so if I
remember correctly] resigned en masse and moved over to what would
become Fairchild Semiconductor.  All told, engineers and scientists
from Shockley labs founded well over 50 Silicon Valley companies.

In the latter half of his life, he became exceedingly controversial,
adhering to theories of eugenics and, as a Nobel Laureate, managed to
bring a lot of notoriety on himself.  I know all of this because here
in Auburn CA, we have Shockley Dr., Shockley Ct., and Shockley Cir.
After his death and the death of his wife, a final bequest from his
estate was 20+ acres of undeveloped land along Shockley Dr. to our
local parks and recreation district.  Auburn isn't very big and
excitement sort of resembles the solar cycle [every 11 years or so
:-)] so the bequest initiated a civic uproar about accepting the land
given his racist views since the bequest required that the land be
named in his and his wife's honor.  The district finally accepted the
land, I believe it is recorded in their name, and no plaque or
monument will ever appear.

73,

Fred K6DGW
- Northern California Contest Club
- CU in the 2014 Cal QSO Party 4-5 Oct 2014
- www.cqp.org

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[Elecraft] OT, but probably of interest- ham radio in the Canadian Arctic

[Doug Faunt N6TQS +1-510-717-1197]

http://www.nauticapedia.ca/Gallery/Arctic_Radio.php

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Re: [Elecraft] KX3 and P3 Adapter

[Doug Faunt N6TQS +1-510-717-1197]

Is there an Android equivalent?
73, doug

On 22-May-13 17:04, Eric Swartz - WA6HHQ, Elecraft wrote:

We were showing an iPad running iSDR for the panadapter with the Griffin
iMic audio interface between the iPad and the KX3's IQ output.

73,

Eric
elecraft.com

On 5/22/2013 8:45 AM, Edward R Cole wrote:

Eric and all:

I recall seeing a KX3 at the Elecraft Booth running a spectrum display
with a tablet and thought: When was this added?.  I guess this is
the HDSDR or iSDR sw panadapter?

Even though I use many soundcard based sw, there lurks many more round
the corner, apparently.

Speaking of such, I would love to hear recommendations of sw that run
psk-31 on the K3.  I have mine fully integrated with my computer Dell
2.33 duo-core, XP32-SP3.  USB/RS232 conversion cable from Elecraft is
used.

I am also interested in psk-31 sw that will run under win-8 pro to use
with my KX3 at FD.

Sorry, wandered far from the original topic.

73, Ed - KL7UW

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Re: [Elecraft] Humidity and corrosion reducers

[Doug Faunt N6TQS +1-510-717-1197]

It looks as if Mcmaster-Carr, mcmaster.com, has a foam inhibitor, item # 
78125T24  $3.35, that looks appropriate.

73, doug

On 01-Jan-13 07:21, Dr. William J. Schmidt, II wrote:

For those who operate their radios in high humidity or corrosive
atmospheres, we have used these before with great success around electronic
gear..  They can be stuck to the inside of the radio and changed once a
year.



http://www.geniefilters.com/_literature_137666/Humidisorb_Product_Sheet







Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ



Owner - Operator

Big Signal Ranch

Staunton, Illinois



email:   mailto:b...@wjschmidt.com b...@wjschmidt.com



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Re: [Elecraft] Problem with a K3 screw - suggestions needed

[Doug Faunt N6TQS +1-510-717-1197]

I found that JIS bits fit the screws really well.
What bits do they use at Elecraft for assembly?

73, doug


On 27-Dec-12 17:21, Ian White GM3SEK wrote:


In Europe, make sure you are not using a Pozidriv screwdriver.

A Pozidriv #1 screwdriver will kind-of work with the Phillips screws in
the K3... right up to the moment when a screw gets stuck. Beyond that
moment, a Pozidriv screwdriver is very likely to do damage.

Even with a good-quality Phillips #1 driver, my 700-series K3 is now on
its second set of case screws. The originals were worn out by opening up
the K3 to show it to people :-)


73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek


Tom H Childers wrote:


Good advice Don.

Another thing that will destroy Phillips head screws is the use of a
reed and prince screw driver, so verify that you are REALY using a
Phillips screw driver.

The very tip of a Phillips screw driver is blunt, not sharp, but a
reed and prince screw driver (which looks very much like a Phillips)
is sharp on the tip and will not seat completely in a Phillips screw,
thus slipping and destroying the socket.

Beware when buying inexpensive screw drivers that are call Phillips
screw drivers.  Check the tip and make sure it's not sharp.

73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member

On Wed, 26 Dec 2012 18:15:05 -0500, Don Wilhelm
w3...@embarqmail.com wrote:


Fabio,

That screw in into a 2D connector.
You will be able to remove the front panel by removing the other 2
screws in the 2D connector, and then you should be able to rotate the 2D
connector body in a direction that will loosen the screw threads.
Elecraft does have replacement screws.  You do not have to purchase the
SS kit, just order by the part number listed in the assembly manual -
you can order one or any multiple you want.

The proper size screwdriver is a #1 Phillips which should be available
worldwide.  Do not use a worn Phillips screwdriver, it is certain to
slip and strip out the screwhead.  If you have had trouble, I suggest
you invest in a new screwdriver.

I use my #1 Phillips more than most in my Elecraft repair activities,
but if I find my screwdriver does not firmly hold a screw when the
screwdriver shaft is held horizontally, that tip is worn sufficiently
that it should be replaced.  I do not want to strip out the screwheads
on my customer's equipment.  In other words, do not use worn screwdriver
tips and all should be well.

73,
Don W3FPR

On 12/26/2012 5:46 PM, Fabio IZ4AFW / NZ1W wrote:

Hi guys,
   today I decided to try to apply a mod (Audio Low Pass filter) to my
beloved K3.
My K3 was born in September, 2009 and I bought it factory assembled.
Up till now, I just added a couple of additional filters and the KV3A
board; so, I never unassembled the front panel before.

Today I found that one of the upper front panel screws was probably
overtightened (or defective).
I tried to unscrew the screw with several phillips screwdrivers
(little and big), to no avail.
The side effect of my (unsuccessful) tentatives was that:
1) I was not able to unscrew the screw
2) now the screw head is damaged (see pic at

https://picasaweb.google.com/lh/photo/V1aTCoSq5qkgs3y-beE_DdMTjNZETYmy
PJy0liipFm0?feat=directlink)

I got to unassemble the front panel unscrewing a couple of screws
more, but I'd like to solve this little problem (moreover, it's ugly).
Before going with some more destructive methods (I am thinking about
drilling the screw??), I'd like to have some savy suggestion from the
community...
Moreover, do you know if Elecraft has an additional screw kit
available (I don't need the stainless steel ones)?

As a side note, I found that almost all the flat-head screws were very
soft and damage-prone (differently from the other round-head screws).





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