In a message dated 7/14/05 12:39:32 AM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
all the points at which the rebars
touched each other were cad welded (I think this is the term but
it has been a while); the process uses little molds that are
filled and then
Hi Dave,
Just out of curiousity, did you consider the tower
base safe after that experience, from a mechanical
standpoint?
What you describe for your system seems like a lot
more than a 10' length of wire set in concrete. We
have this type of construction in our facility and as
you say it is
Welcome Dave,
Not been here too long myself, but you will meet a lot of super and very
helpful folk who go a bit daft when CERTAIN subjects are discussed!! I don't
have enough experience with the K2 to answer your question but I'm sure
that you will receive informed answers.
Enjoy your K2
Dave,
Welcome to the list.
I am not certain what you mean by did not match, and in this instance the
meaning is quite important.
There are 3 resistance ranges shown in the chart - yes, your readings should
fall within that range, if not, try reversing your meter probes, using a
different meter,
Ufer grounds:
The question of grounding comes up often, and it's important to
distinguish between the various functions of a ground for a ham station.
They are
1) Safety (utility) ground. This is the solid connection to the ground
wire from the AC service entrance. All equipment
Hi Glenn
Seems a lot of work for a relatively simple rf ground.
Why not just take a piece of copper tubing and lay it in a shallow trench
and bond your ground wire to it?
RF doesn't penetrate the ground very far, so a deep trench wouldn't be
needed.
Glad to see you're still around. Haven't heard
Julius,
good question...
J F wrote:
Hi Dave,
Just out of curiousity, did you consider the tower
base safe after that experience, from a mechanical
standpoint?
At first no. not until it was surveyed my a licensed mechanical and
electrical engineer team; they used some sort of fancy
Glenn, Bob and all,
What constitutes a good utility ground or a protective lightning ground will
not always (you can substitute usually) provide an effective RF ground. See
Vic Rosenthal's posting today on this same subject.
For example: Consider that a good RF ground can be provided by a
Well, everything went fairly well up to the part III alignment. I was able
to get slightly over 2 watts during the first few steps of the alignment.
However during the next steps, I get higher current than I should, and the
max out is about 5.5 watts even with the current cal set to 3.5 amps.
3
Hallo Tim,
I don't think that you do have problems with the power supply. How do you run
the power test? Do you use
a dummy load with a SWR/ Powermeter?
Do you align the band filters for every band?
Regards
Martin
-Ursprüngliche Nachricht-
Von: [EMAIL PROTECTED] [mailto:[EMAIL
NZ8J wrote:
I have checked and swapped power supplies, changed power cords, and set
current cal to 3.5 amps, but the max output seems to be about 5.5 watts. I
get Hi Current indication even with the current cal set to 3.5.
What kind of load you are using? Dummy load? Antenna? When using
Such a promise is not necessary, David. Hi. Welcome to the list. I hope you
have an enjoyable building experience. I KNOW you will have many enjoyable
operating experiences. The K2 is a great rig, and I certainly don't see
anything on the horizon I would trade mine for. I'm STILL trying to dump
Folks,
I received a couple questions, and perhaps I was not clear on one item where
the RF Ground occurs.
AN RF GROUND MAY NOT BE NECESSARY IN THE SHACK. The proper place for an RF
Ground is at the antenna location.
Look at it this way - the half of a resonant dipole that is connected to the
I have a late model K2/100 that I mostly use on CW. In the past, I have made
successful contacts on SSB, but haven't tried for 6 months or so. Last night,
I was scanning the phone side of 20 meters and heard a dx station that I tried
to contact. He never heard me. I then heard a local
NZ8J wrote:
Well, everything went fairly well up to the part III alignment. I was able
to get slightly over 2 watts during the first few steps of the alignment.
However during the next steps, I get higher current than I should, and the
max out is about 5.5 watts even with the current cal set to
Thanks for the feedback Dave!
It's an interesting topic, and as you say some are
luckier than others, with lightning and ground
conductivity.
Hope you find a nice 10 acre lot, on the edge of a
nice salt flat (or with an ocean view). I'm laying out
80M radials this summer. The K2 and I have a
I've read several good posts on your issue, but no one has mentioned this.
You report 5 watts at 2.4 amps, and a HIGH-CUR reading. If the current limit
is 3.5 amps, you should get a HIGH-CUR annunciation at 3.5 amps, not at 2.4.
In any post of this nature, the supply voltage will help a lot. A
Folks,
I am at page 42 in the manual, doing resistance checks, and I find that
some are off, specifically :
U4 pin 5 2.8 K
U4 pin 8 1.4 K
U6 pin 1 7.6 K
Any ideas or suggestions before I proceed? I note that I am missing C2
and C4 (they are on their way to me), in case that would
Dave,
Certainly look for shorts to ground and poor solder connections,
particularly in the vicinity of U4 pin 8, R21, and C20. Check the
orientation (polatity) of C20.
Be certain you are counting the pins correctly - pin 1 has a round pad, the
others are rectangular, and the pins are numbered
Hi Glenn,
Let me jump in here and comment. A Ufer ground is for 60 Hz and safety
grounding only. It probably is not such a good RF ground, as that would
depend on its wavelength relationships, ie how big is it in terms of
wavelengths you use, what is it's capacitance to the dirt, what is the
I aligned the rest of the bandpass filters and took the following readings..
3750 - 2.38 amp
7100 - 2.14 amp
10100 - 1.70 amp
14100 - 1.26 amp
18100 - 1.10 amp
21100 - 1.18 amp
24900 - 1.14 amp
28200 - 1.12 amp
As you can see the higher in frequency, the better the readings are.
However, even on
... damned weird contraption (sans broccoli ;-) but, believe me, this
thing is just plain fun to send code with:
http://andrea.borgia.bo.it/amateur-radio/thx-cootiekey-dscn0022.jpg
(taken from http://andrea.borgia.bo.it/amateur-radio/index.shtml.en)
Ok, it'a lame attempt at diverting the
It's a sideswiper.
Stuart
K5KVH
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Help:
Thanks to everyone who replied to my first query. I will take all your
kind advice. I am using a digital VOM but it is a cheapo model, as
befits a Scotsman. An Aberdonian no less, the worst kind. :-)
I will take my time and recheck everything.
73
Dave Lindsay GM4HQF
---
avast! Antivirus:
On Thu, 2005-07-14 at 17:51 -0500, Stuart Rohre wrote:
It's a sideswiper.
No, it's a single lever paddle. Note the three wire connection (and you
can even see the cuts in the copper base that isolate the dit, dah, and
ground connections).
--
73, Brian
VE7NGR
Hi,
My K2 has been working well and I recently noticed that the AGC fast/slow has
little or no effect. I suspect it's been this way for quite some time. I made
some measurements and when performing the AGC tests on U2 (LM833), I get very
close to the expected values for the specified
Hi,
The problem is solved. After thinking about it for a while, and not having the
PIC's data sheet, I wondered if the AGC signal was an open collector / drain
type. It turns out that pin 1 of the resistor network had never been soldered
in by the builder...not me (the builder knows who he
Does anybody know the why the cover of the K2 Manual has the K2 dialed
to 14205.73?
Is that a frequent K2 net frequency or is it just happenstance?
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Matt,
I don't believe it is significant of anything - other than the obvoius fact
that the K2 happened to be tuned there when the photo was taken.
As we well know from listening on the bands, most every SSB operating
frequency is on a frequency of .00, so it is unlikely that it was even
Poetic license on the part of the illustrator (yours truly). Had a nice
ring to it :)
73,
Wayne
N6KR
Does anybody know the why the cover of the K2 Manual has the K2 dialed
to 14205.73?
Is that a frequent K2 net frequency or is it just happenstance?
---
http://www.elecraft.com
I should have caught the 73. At my age, it's nice to be wet behind
the ears though!
On Thu, 14 Jul 2005 20:37:33 -0700, wayne burdick [EMAIL PROTECTED]
wrote:
Poetic license on the part of the illustrator (yours truly). Had a nice
ring to it :)
73,
Wayne
N6KR
Does anybody know the why the
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