On Sun, 15 Apr 2007, Larry Makoski wrote:
And we survived! No seat belts or kid's car seats back then, too And I
never had to be told not to eat paint chips, either!
'Course not, your momma was prolly so unliberated that she wuz at home raisin'
ya up...and did funny stuff like clean,
During the winter I live about 200 meters from the Florida Atlantic
beach. Usually I have windows open, and although the salty sea breeze
is pleasant, it greatly speeds corrosion of metal.
Perhaps a maritime electronics expert could advise me as to whether I
should leave my K2 (and other
This from long-time friend and computer expert ...
73! Ken Kopp - K0PP
[EMAIL PROTECTED]
- Original Message -
From: Travis Jarman (K4TNT)
To: Ken Kopp
Sent: Monday, 16 April, 2007 12:36
Subject: Re: Maybe of interest ... from the Elecraft reflector
A much better solution for secure
I send backwards. When I built my first keyer, I had it in my head that
the thumb (thick, heavy) was used to send dashes. As soon as my Heath
keyer was done I discovered my mistake in logic but it was too late. I
had already begun to train my brain by sending air morse and the thumb
was tied to
Here is a link to a presentation by the CEO of Lumileds, maker of the
Luxeon LEDs you see in those flashlights for sale at hamfests. I attended
a presentation of this talk and got to ask some questions about warm-white
lighting, but apparently the video feed of the talk is not available.
LEDs
When I was educated morsecode at school (nautical college) I operated
the straight up and down key with my right had. At that time, my teacher
had an elbug, which was a japanese modified paddle and a large
circuitboard with many transistors (it was in the mid 70's).
Every student wanted to try
Today I decided to recalibrate my K2 using a very accurate 10MHz source, as
well as replacing C31 in the KPA100 (Rev. D) to bring it up to the latest Rev.
E.
After leaving both the 10MHz source and the K2 turned on all day to stabilise,
I made a start but the first problem encountered was
Sure that this has already been asked and answered a dozen times, but
I seem to have a problem being able to search the reflector archives
(is there a trick to that?).
What is best method to change the internal battery of the K2?
I understand it needs to be about 14 volts, so the typical car
Dave,
That 'artifact' you heard when you had the filter set to hear zero
frequency was most likely some BFO feedthru.
Good that you have put C31 in the KPA100 - it is to avoid a possible
oscillation - it has nothing to do with the power control level.
You can tame the power variation a bit
Bruce,
CAR BATTERY CHARGER?? Those things are usually quite poorly regulated
and often soar to 17 volts or more with little or no load. Note that
the max voltage for the K2 is 15 volts, so you could get into trouble
with one of the auto battery chargers.
You can use a regulated power
Brett,
Since you can probably hear 10 MHz WWV at your QTH, why not use that
signal in LSB or USB to set C22 very accurately. The method to do that
is on the Elecraft website on the Builder's Resource page.
I also recommend that one use Spectrogram to tell when WWV is tuned
'just right' - I
Hello All,
K2 5118 made contact #1 last Friday, random wire tuned by T1, also its first
use.
Has a 30 minute QSO with Rod, VK4LS on 40 with 10 W SSB, over 1200 km, solid
all the way and nice report.
After 30 years and many rigs, some home designed and brewed this was just
great. The K2 has
Hello to the folks on the list.
I am getting ready to order my K2 kit sometime over the next few days.
(I sold my 746pro to be replaced with the K2 in QRP mode.) I was
wondering if anyone on the list has designed a USB connection to the
replace the DB9 serial interface?
I see no point in having
The KAT100-1 tuner is spoken for. Thanks very much.
Doug W4DAS
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John,
It's mainly because the DB-9 is used for more than just the serial
interface in the design of the K2. I'm sure Wayne or Eric will chime in
on the specifics, which have come up on the list in the past year, if
I'm not mistaken.
Matthew Pitts
N8OHU
K2 #5956
Hi Matt,
That is an excellent point. Given that thought, it might be nice to
have a secondary board (or replacement board for those folks that may
not need the DB9 interface) that uses the TX/RX data with a USB driver
chip.
It is great radio... now we just need to get the rig interface to same
RUSTY Florida area?
I'm surprised to hear about corrosive salty-air
regions in Florida. Just never heard of it?
Our son lives on big island of Hawaii - near
Hilo. The salt water air type of corrosion, on
things like bicycles, etc. - is notorious in Hawaii.
Things there - not protected, don't
I have played with those chips (FTDI), and the integrated connectors
with built-in chips, for possible use in my kits to replace the RS232
ports. The chips are reasonably priced, although still a tad more
expensive than the MAX232 series, and only available in SMT, which adds
assembly cost for
I purchased a pre-built K2 a couple of years ago. It seemed to work fine
except on occasion it would stop receiving, with a tap on the right side of the
cabinet it would be okay. These taps became more frequent. I also noticed
that the K2 would not transmit at these times. Finally, about a
Lived in Florida for 16 years ... in Melbourne and St.Petersburg.
Some salt air-related rust, corrosion, mildew but nothing like here
on the Oregon coast where we spend winter months away from
Montana. Except for the mildew ... we have a dehumidifier. It's
a must here. (:-))
I'd leave the
Craig,
I am fairly certain that you will find an unsoldered connection. Those
things can work for a year or more and then all of a sudden, the amount
of oxidation begins to increase and you have intermittent operation.
Look in the genreral vicinity of the area where the tapping was more
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