Now that my K3s have v. 3.25 firmware, I am thinking about installing the wire
mod for the automatic front-end protection. While I have access to the PCB,
why not go ahead and install the VFO tuning noise reduction mod even though I
do not experience noise during VFO rotation on 6, 10, and 60
I wasn't hearing the noise at all and was maybe barely hearing the
noise w/ no antenna connected. I don't think I'd have noticed it unless
someone told me to look though...
There will be no unintended results as long as you carry out the mod as
intended.
Good luck! I've installed (and
In a recent message, Roy Morris w4...@carolina.rr.com wrote ...
Now that my K3s have v. 3.25 firmware,
...
While I have access to the PCB, why not go ahead and install the VFO
tuning noise reduction mod even though I do not experience noise during
VFO rotation on 6, 10, and 60 meter bands.
http://www.mail-archive.com/elecraft@mailman.qth.net/msg81291.html
Bob NW8L
On Sun, Aug 23, 2009 at 3:09 PM, David Prattda...@g4dmp.fsnet.co.uk wrote:
In a recent message, Roy Morris w4...@carolina.rr.com wrote ...
Now that my K3s have v. 3.25 firmware,
...
While I have access to the PCB,
This was mis-worded in the doc and is being corrected. It should read:
IMPORTANT: You must complete the modification as described below before
enabling the vfo noise reduction menu item in version 3.24 or later. Failure to
do so may result in erratic behavior of your K3.
Basically, he
Well, it shouldn't hurt to do the mod, but I agree with David if you can't
find any noise.
The reason 3.24 is required is that it provides a menu entry for changing
the bus timing as described in the procedure. A slightly different timing is
required for stable operation once the diodes and
Actually I believe that the signals will be plenty stable if you place
the hardware mod but don't change the frequency. However speeding
things up (using the SPI2 setting) w/o proper termination is going to
cause problems.
I think the reason for the speeding up of the clock was to put the
Now doggonnit, let's get our stories straight!
Ron D'Eau Claire says:
... if you add the resistors and diodes and do not
change the timing, the VFO may become unstable,
Eric Swartz says:
There is no downside to making this h/w mod, even if you do not enable
the menu option.
Am I missing
I've talked with Wayne on this mod and Eric's statement is the one to go
with. I believe that Ron simply made a typo and meant to say if you do
not add the resistors and diodes and you do change the timing that it
may become unstable.
~Brett
On Sun, 2009-08-23 at 18:23 -0700, Joe Planisky
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Planisky
Sent: Sunday, August 23, 2009 6:24 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] K3 Hardware Updates
Now doggonnit, let's get our stories straight!
Ron D'Eau Claire says:
... if you add the resistors and diodes and do not
change
Hi Brett. After putting in the diodes and resistors the VFO in my K3 was
unstable until I changed to SPI 2.
Wayne thought this was normal.
Ron AC7AC
-Original Message-
Actually I believe that the signals will be plenty stable if you place
the hardware mod but don't change the
before.
73 de James K2QI
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Eric Swartz -WA6HHQ,
Elecraft
Sent: Sunday, August 23, 2009 5:31 PM
To: David Pratt
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3 Hardware Updates
Hrm. Seems odd. My understanding was that they were there to reduce
bounce on the clock edges and to lessen the amplitude to about 3V when
talking to those devices.
Logic tells me that it should be ok at both speeds with the termination
in place but your experience demonstrates otherwise.
-WA6HHQ,
Elecraft
Sent: Sunday, August 23, 2009 5:31 PM
To: David Pratt
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3 Hardware Updates
This was mis-worded in the doc and is being corrected. It should read:
IMPORTANT: You must complete the modification as described below before
haha wow I just did the doubles rather than doing all off the harmonics.
Ok its time to go and get some sleep. The 3 hours I got last night were
not enough.
~Brett
On Sun, 2009-08-23 at 17:09 -0700, Brett Howard wrote:
Actually I believe that the signals will be plenty stable if you place
the
Well just mucked around on the bands for a bit (about 40 minutes or so)
with the hardware mods in place and switched it back to SPI1 and I
wasn't able to get anything to behave strangely...
However in trying to recall the change from memory I did find that
pressing 8 while in VCO MD changes what
...@mailman.qth.net] On Behalf Of Joe Planisky
Sent: Sunday, August 23, 2009 6:24 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] K3 Hardware Updates
Now doggonnit, let's get our stories straight!
Ron D'Eau Claire says:
... if you add the resistors and diodes and do not
change the timing
Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Joe Planisky
Sent: Sunday, August 23, 2009 6:24 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] K3 Hardware Updates
Now doggonnit, let's get our stories straight!
Ron D'Eau Claire
Ah! Gotcha Joe. Yes, you are right, they are different.
After I installed the mod while illustrating the App Note, my VFO A started
moving in 100 Hz steps at random. I spoke with Wayne, who was also very
concerned since the mod had been carefully tested.
Then I realized that I had forgotten to
: Sunday, August 23, 2009 6:24 PM
To: Elecraft Reflector
Subject: Re: [Elecraft] K3 Hardware Updates
Now doggonnit, let's get our stories straight!
Ron D'Eau Claire says:
... if you add the resistors and diodes and do not
change the timing, the VFO may become unstable,
Eric Swartz says
I have found Excelite screwdrivers in general are good, and I have
also found good ones at Ace Hardware.
I like the German-made tools from Wiha and Wera. I ordered a set of Wiha
screwdrivers in a canvas pouch from chadstoolbox.com but they arrived
too late for the K3 build.
Well I finally bit the bullet and did the audio- and ALC-mod hardware
updates to my SN308 K3, including adding pull-ups to the band-data outputs
(optional mod in the ALC instructions). I'd already done the HAGC and CW
rise-time mod a few months ago. While I don't use ALC with my K3/ALS-600, I
I second that
73 de M0XDF, K3 #174
--
The problem with being sure that God is on your side is that you can't
change your mind, because God sure isn't going to change His. -Roger
Ebert,
film-critic (1942- )
On 20 Dec 2008, at 11:53, Phil Debbie Salas wrote:
So - Now after two mod processes
Phil amp; Debbie Salas wrote:
So - Now after two mod processes plus installation of the KRX3, my cabinet
screws are starting to show a little wear. Maybe Elecraft should offer a
small kit that just includes replacement cabinet screws (top-and
side-cover
especially) for those of us
I believe both the Pan Head and Flat Head chassis screws are already set up
on the Spare Parts and Mod Kits page under Miscellaneous,
VirtualReality
I tried to FTP the the above updates, but it looks like one can't
download the screw packages and install them with the K3 Utility.
So - Now after two mod processes plus installation of the KRX3, my
cabinet screws are starting to show a little wear. Maybe Elecraft
should offer a small kit that just includes replacement cabinet screws
(top-and side-cover especially) for those of us who keep taking our K3s
apart.
My unit,
Someday I'll be sitting at the operating desk preparing to call a rare DX
station when my new Elecraft K22 will suddenly fade into nothingness in
front of my eyes just as a disembodied voice comes from the phones,
Finished installing automatic updates. Starting mandatory reboot.
It sounds like
A key objective of the procedures is to make sure everyone with normal
skills and tools can do the job cleanly and correctly the first time.
It's the same trade-off used for important tasks anywhere, whether the
worker is an astronaut working on the ISS, a surgeon in the operating room,
or an AE
Hi Ron,
Someday I'll be sitting at the operating desk preparing to call a rare DX
station when my new Elecraft K22 will suddenly fade into nothingness in
front of my eyes just as a disembodied voice comes from the phones,
Finished installing automatic updates. Starting mandatory reboot.
Of
Although a little screw wear is inevitable, the wear will be much less
if a proper fitting screwdriver is used. The screwdriver points do wear
after a while, so the purchase of a good new #1 phillips screwdriver is
my recommendation. When the screwdriver point will no longer hold a
screw
Thanks to the G; whomever it was,,, for the hint on the removal of the choke
( audio output mod).
That was to turn the set upside down ... use my fantastic solder
suckerthen drop the old part into the set . This rather than
having to remove the 2ndRX to get to that choke.
Then put the
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