Hi Ruben
The K3 also has problems with intense RF fields on the coax cables. I use a
3cx3000 amp which causes the K3 to stutter. Basically when driving the amp, the
power output becomes erratic.
Common mode chokes helped a bit, however I still have problems. I dont have
these problems on o
Hi Juha,
Are you use 2.7KHz filter? If so please check the shift freqency
setting.
One of my friend meet this problem on SSB mode, I checked his setting, found
he did not
correctly set the filter shift freqency. After set to correct value, no
problem now.
73 de ba4rf,David
2010/3/29 Juha Ka
You probably want to turn ESM in N1MM off. With it off, this prevents the
automatic sending of DVR messages as you log contacts manually. You can
still press the F-keys to send individual messages if you want.
Ctrl-M toggles ESM on and off. So, if you want to stop automatically using
the DVR hit C
Well you can just imagine the problem for Elecraft if they decided to
"approve" a particular ESD mat:
- they'd have to choose one or two out of the bunches of the ones available
- offer some reason they preferred these one or two over the others.
- get them in stock, set a price for them.
- endles
Sam,
I lack proof, but I believe that the only thing that bare foot technique
provides is one cold foot.
Spray your clothing and the immediate area with "Static Guard" will
provide greater protection than the anti-static mat and wrist strap alone.
73,
Don W3FPR
Sam Scripter wrote:
> Re: Effect
It's (at least was when I was still working) common to use heel straps as part
of ESD protection in industry. These were of similar material to wrist straps
and contacted the sweat layer inside the shoe on one end and the floor on the
other. The floor had to be treated with an ESD safe coating
> It's (at least was when I was still working) common to use heel straps as
> part of ESD protection in industry.
Last time I saw heel straps in use was in the late 80s at a site that
builds solid fuel rocket motors for military and aerospace uses. They
also had testing equipment to check that yo
Does anyone know the nature of the K3 USB -> COMM adapter sold by
Elecraft? I cannot find anything in the Elecraft literature about it
(other than the price, of course). For example:
Does it come with a pre-defined COMM port number?
A settable COMM port number between 1 and 10?
A settable COMM p
I work for a PCB assembly contract manufacturer, and we use foot straps to
dissipate static charge. Of course, as mentioned previously, the floor must
be treated to make it conductive.
Art WB8ENE
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View this message in context:
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Sent from t
The heel straps we wore in the factory had a strap that went up your leg and
connected to bare skin above your socks with a conductive band with velcro.
There wasn't any expected conductivity through your shoes. And for
additional information, they were only valid on floors with conductive mats
Hello,
When I whistle to mic and tune my linear amplifier, I notice that last watts
going up very slowly. Without linear I tested and sometimes first 80 watts
out normally but from 80 to 100 watts it takes about 2-3 seconds.
When I am using my linear (Titan, has peak power meter by led) last one
John,
There is nothing special about the adapter Elecraft sells. It may be
convenient to do one-stop shopping. The most widely "approved" adapters
(judging by comments here and on some other discussions) use the FTDI
chipset. I have adapters from at least 2 manufacturers and they both
work flaw
A look in the archives will bring up a long long series of posts about
USB/RS232 that does not need repeating from beginning.
The adapter sold by Elecraft is Prolific chip based.
Issues with USB are mostly in the drivers, but not always. The
Prolific chip had problems with Windows 7, particularl
Actually - About a year ago, I saw both ankle & wrist straps in use at a
microwave manufacturing company, in both the production & service areas.
When I asked about the ankle straps use I was informed that the proper use
of both straps was a condition of continued employment as well as the daily
Received the K2PAKIT today. Besides the two output transistors there are
(2) PNA transistors and another part that looks like a resistor with a
color code: brown, green, gold, gold. What am I to do with these xtra parts?
Geo/W2BPI
___
Foot straps are pretty common , but are useless unless you have
conductive floors (always get in arguments with QA as my lab has non
conductive floors, and they want to get rid of all the chairs without
draggers).
Matt
W8ESE
__
Elecraft m
Folks - Lets end this thread (and the associated anti-static mat
threads). Looks like it has been beaten into submission, and the number
of posts on the subject are above the list pain threshold ;-)
73, Eric WA6HHQ
List Moderator.
On 3/29/2010 8:53 AM, Jim Miller KG0KP wrote:
> The heel strap
Thanks to the responders to my only-half-innocent query about the KUSB
cable...my experience with adapter cables from USB-2.0 to RS232 has been
as dismal as many of you report. I will probably end up using my
CableMax 4-port I/O adapter, which worked well with my (former) K2, but
larnin' is fun
And, hopefully, the UPS truck that delivers your new K3 will have an
anti-static grounding strap dangling from the rear axle. ;o)
Terry, W0FM
-Original Message-
From: lstavenhagen [mailto:lstavenha...@hotmail.com]
Sent: Monday, March 29, 2010 9:16 AM
To: elecraft@mailman.qth.net
Subject
George,
Use the PNA transistors to replace Q11 and Q13 - do that even if you
think the ones on the board are OK, those transistors control the bias
to the base of the PA transistors, and if faulty can zap your new PA
transistors.
The resistor is a replacement for R50 - older K2s used a 1/4
John,
The multi-port USB to RS-232 units (I hate to call these "adapters") are
apparently sold for commercial use and from what information I have been
able to find, do not usually give problems. I have a 4 port Edgeport
that works great, but the single port adapter that I keep with my laptop
I have my K3 and SteppIR controller talking perfectly thru the computer logging
program and "Y" cable using a Prolific
USB to Serial converter cable.
I purchased an "Edgeport 8" USB to Serial converter and removed all the
Prolific cables to existing devices and
connected all
directly to the Edg
I've been testing the P3 < URL:http://www.elecraft.com/news.htm > for a
while now, and it has a really nice feature for Digital Modes that my
other panadapter solutions lack.
The P3 has a SPAN control. This sets the width of the spectrum display
in kHz. When looking at a busy band, for examp
Lyle, could we use the P3 as a X-Y Scope to monitor RTTY signal
as on MMTTY?
73 de VE2FK
- Original Message -
From: Lyle Johnson
To: elecraft@mailman.qth.net
Sent: Monday, March 29, 2010 2:40 PM
Subject: [Elecraft] P3 and Digital Mode Operation
I've been testing the P3 <
Lyle, am I correct in my understanding that the P3 does not require any
connection to a personal computer for any reason?
If it does rely on an external PC for anything, will software be available for
all platforms (as with the K3 utility) or only for Windows?
Those of us who use Macs obvious
My understanding is that F/W upgrades will be performed by the K3 utility, but
other thn that, no other reliance upon a computer of any kind.
Kinda important to me too
73 de M0XDF, K3 #174, iMac 24" 2.8GHz Intel Core 2 Duo :-)
--
They are ill discoverers that think there is no land, when they can
> Lyle, am I correct in my understanding that the P3 does not require any
> connection to a personal computer for any reason?
>
Firmware updates are via RS232, using P3 Utility. For normal operation,
the P3 does not require a computer to be attached.
In general, think of the P3 as bing inv
Greetings Everyone !!!
As this is quite an investment for me I spent a great deal of time
researching and comparing different radios. I read the reviews in QST,
read the comments on all the Internet links and it was pretty clear from the
specifications that the K3 was as
good or better technical
Just wondering on the wisdom of attaching a "wire" to one's ankle and
then contacting live voltage with your hand! As an EMT that was the
worst scenario for Cardiac Shock and Death due to electrocution. The
ankle and wrist straps are supposed to have added resistance to avoid
this, still...??
I Found One !! :clap:
tnx
de George
WD0AKZ
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View this message in context:
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Sent from the [KX1] mailing list archive at Nabble.com.
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Have you checked the "Y" cable to make sure it is appropriate
for the new hardware?
If you disconnect the leg of the "Y" cable that attaches to
the SteppIR control box but leave the Y cable in place does
the K3 begin to respond?
73,
... Joe, W4TV
> -Original Message-
> F
> When I whistle to mic and tune my linear amplifier, I notice
> that last watts going up very slowly. Without linear I tested
> and sometimes first 80 watts out normally but from 80 to 100
> watts it takes about 2-3 seconds.
Sounds like a power calibration issue. Double check the K3
wattme
Do you have an application (the K3 Utility) that can send a
command to the K3 and determine if the K3 is responding (e.g.,
changes mode in response to the MD0;/MD1; commands)?
My guess is that the SteppIR controller loads the data line
from the K3 to the Edgeport. That loading is most likely
Finally! I finished putting my K2 construction photos on
my new Joomla site.
See http://wilcoxengineering.com/amateur-radio/elecraft-k2
Clicking on a photo will download a larger image with
more detail.
The K2 is still a hugely popular radio, and I thought
you'd enjoy seeing what's involved if yo
Hi,
No, please, this is not a power calibration issue! A huge number of K3 users
have complained about this propensity of the SSB power to aim
"conservatively" for 50-80% of the requested peak power and then slowly,
very slowly climbing up to the requested power. Once reaching 100% it stays
there
An undershoot of ~ 20% for the first few seconds of transmission on a
new frequency might be an irritant but an overshoot or aggressive fast
acting ALC leads to spatter on peaks, this is very common issue on the
bands today
An undershoot of ~20% on peaks (it's less on my K3) is negligible in
term
> No, please, this is not a power calibration issue! A huge
> number of K3 users
> have complained about this propensity of the SSB power to
> aim
> "conservatively" for 50-80% of the requested peak power
> and then slowly,
> very slowly climbing up to the requested power. Once
> reaching 100%
Brendan Minish wrote:
> An undershoot of ~ 20% for the first few seconds of transmission on a
> new frequency might be an irritant but an overshoot or aggressive fast
> acting ALC leads to spatter on peaks, this is very common issue on the
> bands today
> An undershoot of ~20% on peaks (it's less
> An undershoot of ~ 20% for the first few seconds of
> transmission on a
> new frequency might be an irritant but an overshoot or
> aggressive fast
> acting ALC leads to spatter on peaks, this is very common
> issue on the
> bands today
> An undershoot of ~20% on peaks (it's less on my K3) is
Good idea, I'll add it to the list of possible future features. I
haven't used MTTY, but I assume the X-Y display is like the "plus sign"
on the old analog RTTY demodulators of years ago.
Alan N1AL
On Mon, 2010-03-29 at 14:47 -0400, Claude Du Berger wrote:
> Lyle, could we use the P3 as a X-Y S
You sure know how to hurt a guys feelings, Alan, I plan to use an "old
analog RTTY demodulator", the HAL ST-8000 with my K3 :^) !!! I, too, would
welcome a good X/Y tuning feature on the P3. Any updates on when we might
see the P3 and price?? I am new to the group, just having finished my K3
Yes, and still prefered over waterfall by many RTTY contesters.
73, Claude VE2FK - K3# 3889
- Original Message -
From: Alan Bloom
To: Claude Du Berger
Cc: Lyle Johnson ; elecraft@mailman.qth.net
Sent: Monday, March 29, 2010 7:57 PM
Subject: Re: [Elecraft] P3 and Digital Mod
Lyle,
How about a few photo's or better still a youtube video showing the P3 in
action. I suspect
everyone here can visualise what you just described, but you know what they say
about a
picture (or youtube video) painting a 1000 words etc.
Trevor G0KTN
Hello again,
Let's all agree that the undershoot problem is not huge. But it's much more
than 20% and it lasts much longer than a couple of seconds. And I object to
the notion that a properly working ALC, even a fairly fast one necessarily
leads to severe distortion or splatter. I again hold the
The absence of an XY scope for RTTY was an irritant when I had an FT-2000 and
DMU, so it would be a nice addition in the P3.
I don't remember seeing this mentioned, but will anything be displayed on the
P3 during transmit? I've had two SB-610 scopes and one of the last ones, the
HO-5???, but d
> No, please, this is not a power calibration issue!
Bull ... I have seen it and can recreate it at will.
If the wattmeter is not properly calibrated and the
transmit gains are off, the bower setting routines
do not act correctly. With the transmitter properly
calibrated I see less than .5
IZ1CRR
Maury,
Regarding the 40M problem with Derek's K3, it may be related to stray 40M RF
getting into the radio when it is keyed. If this is the cause, an easy fix may
be to create an imaginary ground on it by connecting a 1/4 wave long (around
10.56 Meters or 34.6 feet) wire to the ground s
> leads to severe distortion or splatter. I again hold the
> opinion that the
> real bad signals heard are due to to PAs being operated
> with no ALC feedback
> to the exciter feeding it and operators being clueless to
> this.
Most amplifiers have very crummy ALC detection. All they do
is same
> Most amplifiers have very crummy ALC detection. All they do
> is same RF level at the cathode of the tube, and that
> doesn't indicate excessive drive or nonlinearity at all!
The only ALC systems I've ever taken seriously are those that are designed
together between the transmitter and external
How do they know it's the radio and not the power supply shutting off?
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Rich - K1HTV
Sent: Monday, March 29, 2010 7:46 PM
To: iz1...@tin.it
Cc: elecraft@mailman.qth.net
Subject:
They don't, but if it is triggered by RF, the proposed suggestion is simple one
and worth trying with available parts.
Rich - K1HTV
-Original Message-
From: Bob Naumann [mailto:w...@w5ov.com]
Sent: Monday, March 29, 2010 21:00 PM
To: 'Rich - K1HTV'; iz1...@tin.it
Cc: elecraft@mailman.q
I have an odd power and ALC problem.
When I load the latest firmware into my K3, it nearly quits
working on USB. The power output is very low with occasional
high peaks. LSB remains good.
If I offset the filter -800 Hz, USB starts working OK.
If I make no other changes and go back to the older
Tom,
I certainly don't know what is going on with your problem, but since no
one else has mentioned anything like that and teh current firmware has
been out for a while, I would guess that you have a corrupt firmware
download. I would get a fresh copy from the Elecraft website and
re-load it.
Can you remote into the K3 from the internet and talk on your rig?
Chris W7CTH
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RS-232 isn't going away any time soon. Witness the large number of USB
to COM converters, the large number of mobo's available with COM port,
and the huge installed base of equipment. Wayne wrote a paper on why the
K3 uses COM vs. USB. I use at least two different varieties. One model
from www.
Chris,
I have not tried it, but Ham Radio Deluxe has a 'remote' mode that can
be used to provide control of the radio, and Skype (or similar) can
provide the audio path. Of course, a computer is required at each end.
There are likely other radio control applications that can provide
remote r
On Mon, 29 Mar 2010 20:45:49 -0400, Rich - K1HTV wrote:
>it may be related to stray 40M RF
>getting into the radio when it is keyed. If this is the cause, an easy fix may
>be to create an imaginary ground on it by connecting a 1/4 wave long (around
>10.56 Meters or 34.6 feet) wire to the ground s
Gary wrote:
"I find I have a place for a 6 meter beam. I don't have one but would like
to make one if feasible. Does anyone know of good plans for a 6 meter
beam that would be realistic to make?"
As someone else noted, G0KSC has a whole bunch of interesting designs on his
web site but I especiall
RE: Bare Foot
Thank you to all of you who took time to keyboard
thoughtful, informative, reasoned, and experiential
replies to my questions about building gear with
one foot bare to the floor.
I did build my K2 on top of an anti-static mat, tied
to the attachment screw of a wall receptacle cover
Already deleted the firmware from my computer and
re-downloaded the firmware from the elecraft site fresh. No
help.
- Original Message -
From: "Don Wilhelm"
To: "Tom W8JI"
Cc:
Sent: Monday, March 29, 2010 10:43 PM
Subject: Re: [Elecraft] Odd power/ALC problem
> Tom,
>
> I certainly
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