On Sun, 20 Jun 2004 13:12:33 -0700, Jack Brindle wrote:
> This is correct, and exactly what happens. As noted below, a mode
> change will change the setting of the mode for the current band. An
> ensuing band change will then take effect and restore the previously
> saved mode for the new band. Thi
I ran my ThinkPad from an inverter last year off a 1050 amp CCA car battery
Along with my FT-100D at 100 watts all day Saturday, no problems what so
ever,
I have seen some noisy inverters, but I have been lucky so far in that
Even my inexpensive ones (read 50 bucks or less) have been pretty quiet
I
One thing you have to check when running a laptop directly from a
battery is which terminal is grounded in the laptop. If you connect
the serial interface you connect the grounds together via the cable.
or anything connecting them together could cause a short circuit even
if the serial interface is
Bill;
Most laptops will draw less 2A from 12V; many are down around 1A. You
should have plenty of power to spare from a 84AH battery even with the
inverter inefficiency.
However, many laptops generate significant amounts of HF interference when
running from AC power. You may want to check out t
Good evening folks,
40 meters was rough this evening. But I am assuming your families are
feasting you on this Father's Day. My first check in was a bit tough but
I caught the call sign in two halves. It appears W0MFQ, Tom, is not in
Missouri this week. But I got a series of MNMNMNMNM bu
Bill
I'll be running my IBM Thinkpad from a 12v battery. The TP wants to
see at least 13v, though, so I'm using the "All-Purpose Voltage Booster"
from N4UAU. I set mine to deliver 13v with an input from 12v down to 10v.
Current drain is a steady 1.5A. I plan to move the converter from battery
to
Do any of you folks have experience running
a laptop from battery power via an inverter? I will be
operating Field Day from a remote location and cannot
use a generator. I'll be using my K2 QRP with a fully-
charged 75AH deep-cycle marine battery topped off by
a 3W solar cell. I'm plann
Hi
Your RF probe is calibrated to measure RMS volts, the scope will measure peak
to peak voltage. To convert from peak to peak you must first divide by two to
get peak volts then multiply the peak voltage by .707 to get RMS volts. This is
only valid for sine waves but RF carriers are sine waves
Sorry for the confusion. ;-(
Le 04-06-20, à 20:54, Eric Swartz WA6HHQ - Elecraft a écrit :
Hi Mike,
If your K2 has earlier firmware than that needed for compatibility
with the KAF2 and you are the original K2 owner, we will supply it at
no charge when you order the KAF2.
Just note on the o
Hi Mike,
If your K2 has earlier firmware than that needed for compatibility with the
KAF2 and you are the original K2 owner, we will supply it at no charge when
you order the KAF2.
Just note on the order what your K2 MCU and IOC revisions are and that you
think you will need the free K2 f/w
Kevin Rock wrote:
... Very strange propagation todayKL0WN and VE1RGB just got their call
signs recognized before
they disappearedThe oddest thing was I got an AK and a few seconds later I
got Nova Scotia.
The list for the afternoon net:
AL7N - Lake - AK - nonE
AL7N may not be using
No problemo, if you like, I could send you the bigger ones. You will be
able to re-crop at your wish. My original format for all photos is
6.1MP... about 2MB per photo... or if you want like this, just save
them from my web site.
For the credit just tell them that is The Marvelous K2 #4130
Howdy Folks,
Very strange propagation today. I was told there was QSB but I heard
none. Signals were fairly weak but once in a while they just popped out
at me. KL0WN and VE1RGB just got their call signs recognized before they
disappeared. WB8UFA was also lost after the second contact.
Ok. I see that on my oscilloscope I can have the "True RMS readout
(Vrms ac)" is it the same thing as we get when we take a mesure
using the RF probe that we built in the K2 kit ???
The RF probe that we built in the kit should convert RF into Vrms when
we set the DMM in DC 20V-30V
When adjusting the bandpass filters for transmit, I do use a 'scope.
The 'scope is doing nothing more that acting as a sensitive analog RF
voltmeter, so nothing complex is required on setting the 'scope time base.
Just connect the 'scope probe across the dummy load (I use a 10x probe),
press TUNE
No problemo Rich, sharing is the key for people sucess !!!
73
Le 04-06-20, à 18:17, Richard Lim a écrit :
Jean-Francois, please forward the responses you receive to me too if
you don't mind. I am also a newbie with my first scope and I'd like to
learn to use it as well. Thanks.
Rich
___
Ok, first thanks for all people that post something about using a
scope. Now I am more familiar with my scope.
My second question is, like in the manual of the K2 on page 75
regarding 40 meter transmitter alignement, telling that we could use an
oscilloscope to adjust all band pass filter in t
No, you must buy the upgrade. Elecraft sell this option. It's
wounderful that this kit is so upgradable thanks to ELECRAFT !!!
Le 04-06-20, à 17:23, Mike Maiorana a écrit :
Hello everyone.
I have an older K2, SN 336, and am considering purchasing a KAF2. My
K2 has
firmware 1.04C and I/O
Hello everyone.
I have an older K2, SN 336, and am considering purchasing a KAF2. My K2 has
firmware 1.04C and I/O 1.02. The manual for the KAF2 says that it requires
firmware version 2.01 or later, and that "if you have an earlier version
1.xx you should have received an upgrade". Does that mean t
This is correct, and exactly what happens. As noted below, a mode
change will change the setting of the mode for the current band. An
ensuing band change will then take effect and restore the previously
saved mode for the new band. This makes a lot of sense, and should be
considered a bug in an
While vainly searching Wal-Mart's electronics department yesterday for a
decent S.A.M.E. weather radio, I came across what seems to be a good
deal: A 5400 mAh lithium ion battery (with AC charger) rated at 9 volts,
for $50. There was also a 7.2 volt version for the same price, which is
also on
K2 #4338 coming to life nicely. Just finished the initial alignment and it's
hearing all sorts of stuff on 40 meters right now.
Back to the bench for final assembly.
Jim, W0EB
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Thanks for the document. I will check at it.
Le 04-06-20, à 11:05, Dwayne Barbee a écrit :
Here is a good read for using an O'scopehope it helps...
--
73 ditdit,
Doc YI9RVT/KE4RVT
Al Kut, Iraq
***All emails and attachments scanned by Norton Antivirus with current
definitions***
N33.29 E45.
I'm using the one that come with. It's a 1X and 10X probe with a little
switch. I can also read on it: 60 Mhz from Velleman.
Le 04-06-20, à 10:45, Tony Wells a écrit :
Hi Jean-francois,
The scope is good. I have one. However you need a good probe for RF.
What
are you using? I'm using an old
If you are questioning how to best adjust L34 - "I.F. Amplifier Alignment"
section of "Alignment and Test Part II," I used Spectrogram. I had meant
to put this hint on the reflector long ago and keep forgetting.
Follow the instructions for "I.F. Amplifier Alignment." When you get to the
last s
On Sun, Jun 20, 2004 at 11:51:13AM +0100, Brendan Minish wrote:
>
> Anyone know of any open source Linux logging packages that do radio
> support?
TLF does, using hamlib for the radio interface. I haven't yet
interfaced my K2 with my computer, so I don't know how complete the
support for a K2 is
Hi Folks,
Is there any soundcard software to assist in optimum tuning for
best sig/noise on SSB, similar to a SINAD meter ?.
thanks
--
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You mus
Hi Stewart,
I guess in the first instance talk to the developers. A 1Sec delay after
band change should be good for a first iteration.
If someone has the time to write an intelligent "hook" that would be good.
I'm out of the loop because I'm up to my eyeballs writing a different kind
of wrapper f
Hi,
As I saw in the K2 manual telling that having an oscilloscope could be
a good thing such as have more precise band filter tuned, etc, etc...
I bought yesterday a "personal scope" and I would like to know how I
could take a few mesures to make sure that the scope is working
properly. I fo
On Sun, 20 Jun 2004 14:08:46 +0100, Brendan Minish wrote:
> I don't see any logical reason to do it backwards, most radios have band
> stacking memories or at least remember frequency and mode by band.
> Sending the mode change command before setting the frequency is simply
> doing things backwards
On Sun, 20 Jun 2004 12:31:35 +0100, Tony Wells wrote:
> Hi Stewart,
> Stewart wrote:
>>> I think that timing may be a separate issue in this case.
> IMHO it is not separate. Careful timing enables the software to bypass the
> buffer overflow issue. This is because of the "lack" of flow control.
>>
On Sun, 20 Jun 2004 11:51:13 +0100, Brendan Minish wrote:
> On Sun, 2004-06-20 at 07:55, Stewart Baker wrote:
>> There seems to be a problem with K2 mode selection when using a number of
>> different logging programs. I have received mails from other K2 users with
>> the
>> same problem. These logg
On Sun, 2004-06-20 at 07:55, Stewart Baker wrote:
> There seems to be a problem with K2 mode selection when using a number of
> different logging programs. I have received mails from other K2 users with
> the
> same problem. These logging programs assume that the K2 responds exactly as a
> Kenw
Did not here Dwayne, YI9RVT, at all on 20 m nor any other Elecraft users, a lot
of QRM from AA contest.
Heard Dwayne on 40m, but very weak, abt. 329. Called several times in vain as
did Sverre, LA3ZA. Freq. was clear, but no good propagation to the Middle-East.
In the end had a solid contact wit
Hi Stewart,
This rang a bell with the findings I had when developing the long-awaited
K2Z.
Probably the only design issue with K2 serial IO is that there is no
feedback from some of the commands making it difficult to pace the sending
of commands. I'm not sure how this compares to Kenwoods etc.
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