Hi all
Just acuired a secondhand K1 and I'm thinking about adding the battery
option
and hope to get some coments on the usability of this option
If anyone has made a drawing of the metal plate that goes inside, I would
like
to receive a copy. I'm going to make some mock-up before ordering the
It seemed from the start, the K3 had tan-ish
principle push buttons. Recent photos of the
K3 - seem to indicate in some of the versions
(prototype, modelshop, early RD) these buttons are
straight GRAY? Which are they? I got
to believe they would be TAN, blending along
with the color
Henning:
I would not install the internal battery option. It requires that you
install a smaller speaker and there is always the danger of the batteries
leaking and damaging the board in the K1. It is very easy to make up a
small battery pack and a short cable to connect it to the radio.
After this weekend's hamfest I was reading my new ARRL 2007 handbook to see
what might be NEW in ARRL testing of receivers, I came across this sentence
that I thought pretty well summed up my experience with my K2 receiver.
On page 10.7 3rd column When using a good receiver with a linear front
On 9/3/07, k4zm [EMAIL PROTECTED] wrote:
It sounds like you have the bottom plate mounted 180 degrees out or have not
installed the bail assy. The bottom should be installed so that the bail
assy is located near the front of the K2. Also if mounted 180 degrees out I
don't think you can
Brett,
OTHR is a big problem in NA, at least on the west coast. On 40M in the early
AM it can prevent operation over the entire CW segment using my current
equipment (no noise blanker). This is a primary focus of my wanting NB
capability.
I have yet to hear a report of any tester on the
JT:
To give you another data point, I just measured my K2 (#5413) and it is
slightly *higher* in the front. With the bail not extended and measuring
from the bottom of the side panels to the tabletop at the front and rear.
Front Clearance ~15/32 in
Rear Clearance ~27/64 in
Both +/- eyeball
The K3 certainly sounds like an interesting rig. One thing I would
like to see is some pictures of the internals of the K3. Pictures of
the modules and how they are located in the K3 would be nice, along
with pictures showing how cramped (or open) is the inside of the K3.
www.N4LCD.com/k3
JT,
Measure your rear feet. Perhaps you have the wrong ones - but I do not
know of other Elecraft products that use different size feet (although
the K3 may have higher feet).
I just measured 3 K2s with my shop dial caliper. My old SN 20 front
feet measure 0.430 inches and the rear feet
[EMAIL PROTECTED] wrote:
The K3 certainly sounds like an interesting rig. One thing I would
like to see is some pictures of the internals of the K3.
[snip]
www.N4LCD.com/k3
Thanks, Paul. Is that pretty much a basic K3? I see Elecraft has done their
usual nice job of having things connect
Henning:
I have K1 #1423, my only HF rig at this time, 4 bands.
I have always used an external battery, a bit more
bulk but I did not have to disturb the insides of the
K1, or worry about battery leaks.
I first built the K1 using 150KHz range for the
tuning. Tuning was much too difficult to
Greg wrote:
Kevin. The first time you like inside a bare K3 you'll probably say to
yourself, that's it? :)
That is probably the reaction I had when I first saw pictures of the inside of
a K2. With all the features listed as being in the K3 I thought it might have
been a bit more crowded in
OT I know, but it does relate to my K2 ;-)
Wondering if anyone on the list might have a recommendation for a simple QRP
antenna for use in a hotel? My wife is attending a conference in Chicago in
a couple of weeks and I'm going with. When she booked the hotel, I just
asked that we get a room as
Minor shack (and workbench) cleaning:
UTC S-19 modulation transformer - $15 + shipping
KD1JV MS-DDS-60 VFO controller for the NJQRP DDS-60 - $25 + shipping
(DDS-60 not included)
TenTec 1208 6m/20m transverter - Receiver works, but I cannot get any
transmit power out - $35 + shipping
(I ship
I wholeheartedly endorse the comments by Jim, K4ZM. The back light is
really nice. I use a pack of 10 x AA sized 2700 mAH NiMh cells in a
battery holder inside a plastic project box. The battery pack has a
solid state self resetting fuse and short cable to the K1. It is charged
with a small
The MS-DDS-60 and Tentec 1208 have been spoken for.
Still have the UTC S-19 modulation xformer.
I'll post smoe more goodies as I finish cleaning!
Please email me off list (wb2art at arrl dot net) if you have any
questions.
73
Ken WB2ART
___
Dave
One thing you will need is a way to hold the wire
away from the side of the building. A telescoping
fishing pole would be the easiest to take along
and draw no comments. You can stick it out a
window and let the thin wire hang down in the
clear.
Good luck and 73
Bob N6WG
- Original
Unless your hotel is considerably dated, you won't be able to even open
a window, let along get an antenna out.
There is so much wiring, piping, metal, conduit, and internal noise in a
hotel, especially a high-rise, that you're not going to hear anything
anyway.
I've tied many times over
Maybe a room on the south side.
The biferglass crappie pole is a good idea.
de Joe, aa4nn
My wife is attending a conference in Chicago in
a couple of weeks and I'm going with. When she booked the hotel, I just
asked that we get a room as high as possible. I'm not sure what we got
yet.
Hello all,
As I creep towards my K2 definition...
- Low wattage is fine
- SSB option (yeah I know I probably want 100 watts with this, but I
still want it)
- DSP Board maybe
...and since one person spoke about the coolness of taking one and only
one box to the picnic table along with a simple
Two shades of gray on the K3s I've seen, Fred. One is a very light gray and
the other a dark charcoal gray. The light gray, like most neutral light
colors, is very sensitive to the color of the light you see (or photograph)
it in, taking on various hues according to the light source. Still, in
I have the recommended Pomona BNC-to-dual binding post adapter for use with my
KX1. It looks like some kind of wire termination might fit into the ends of
the binding posts. Has anybody got a recommendation for what kind of wire
termination would fit snugly into those openings? Banana plugs
John
I have a K2 with the internal battery option. There are a few of points to
consider:
1. The basic original K2 draws about half the current of a K2 with the DSP
and SSB modules fitted (mine is drawing 360 mA at the moment). While you can configure
the K2 to draw less current, you are
John,
My experience with Sealed Lead Acid batteries has been quite good. My
K2 has had the internal battery installed for about 6 years now with no
problems noticed, nor have I had leakage problems with any of the SLA
batteries that I have had over the years.
The discussion started out
John Huggins wrote:
- Internal antenna tuner
If you're going to use a simple wire, KAT2 is your only good option,
and it's a really good one too.
- Internal battery option
I've had a LI Poly RC Model battery burst into flame while powering my
KX1 [fortunately outside both the house and
...and since one person spoke about the coolness of taking one and only
one box to the picnic table along with a simple wire...
Hey John,
The tuner and battery is a super combo! I use mine all the time.
I also use an AA Smart Charger, and have a jack on the back of the K2
for charging the
I do not think that the Sealed Lead Acid battery used in the K2 will be a
problem.
The battery manufacturers specifications show that these are pretty
rugged unless the terminals are shorted without any outside circuit
protection or severly overcharged.
73,
Bob Johansen WB2SRF
K2 S/N 5622 with
I've likewise chosen external power for my K2. The ongoing tests by the RC
airplane folks of the Dewalt Lithium Iron Phosphate batteries may finally
cause me to put some batteries in my K2.
Google A123 for more info.
73
jim ab3cv
___
Elecraft
Scott,
The intended male plug to go into the Pomona adapter
binding posts is a standard banana plug. They come in
both straght and right-angle versions and in many colors.
If you want to use a plug to go into the holes under the
binding posts a standard tip plug is the item. Both types
of
On Sep 3, 2007, at 10:58 AM, Dave Van Wallaghen wrote:
OT I know, but it does relate to my K2 ;-)
Wondering if anyone on the list might have a recommendation for a
simple QRP
antenna for use in a hotel? My wife is attending a conference in
Chicago in
a couple of weeks and I'm going with.
There is a good article in the latest IEEE Spectrum on A123. They are
experimenting with a great number of Lithium Ion chemistries. Iron
Phosphate is just one of them but looks like it may be very stable.
Search here: www.spectrum.ieee.org/sep07/inthisissue
Kevin. KD5ONS
On Mon, 03
Better link to Spectrum article on A123:
http://www.spectrum.ieee.org/sep07/5490
Kevin. KD5ONS
On Mon, 03 Sep 2007 15:05:32 -0700, Jim Miller [EMAIL PROTECTED] wrote:
I've likewise chosen external power for my K2. The ongoing tests by the
RC
airplane folks of the Dewalt Lithium Iron
Ken:
Thanks. What I already have must not be standard banana plugs, because they
won't fit. Guess I'm going on a shopping trip...
73.
-sw-
- Original Message -
From: Ken Kopp [EMAIL PROTECTED]
To: Scott Walker [EMAIL PROTECTED]; elecraft reflector
elecraft@mailman.qth.net
Sent:
Thanks for the information.
At my job we deal with these lightweight chemistries in batteries for
Unpiloted Aerial Vehicles. You can guess the requirements: provide
unlimited Whours/kg, tolerate -40 to +80C temps, exhibit lift, etc.
We have been watching very closely the progress in the Lithium
The battery in my cell phone is a lithium ion, and is
VERY small, VERY light, and rated for VERY high amp hours.
They have a much longer lifetime, lots more charge/discharge
cycles, and you don't really see a lot of cell phones
bursting into flames.
I don't think I would try cheap RC type
Being a mostly tube guy, I have not read much about
phase noise.
Do tube circuits have phase noise?
Do discrete components (solid state, transistors) in
coil and cap VFO circuits have phase noise?
What is the worst source of phase noise?
What circuits have little or no phase noise?
My ears
BTW: The Chinese imitations of the Pomona #1296 sometimes have sub
standard jack holes in the binding posts! I bought a couple of the
cheapies and they work, but they are crappy compared with the real thing.
73,
Sandy W5TVW
- Original Message -
From: Scott Walker [EMAIL PROTECTED]
Do tube circuits have phase noise?
Do discrete components (solid state, transistors) in
coil and cap VFO circuits have phase noise?
Oscillators have phase noise. Properly designed -- with attention to
this -- the phase noise can be managed and made small. Crystal
oscillators are usually the
http://www.kkn.net/~tree/2006_Stew.htm
LOTS of QRP entries last year!
Elecraft K2 mentioned in SOAPBOX by four separate entries. I'm sure
there were more.
de Doug KR2Q
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Post to: Elecraft@mailman.qth.net
You must be a
On Mon, 3 Sep 2007 20:46:45 -0400, DOUGLAS ZWIEBEL [EMAIL PROTECTED] wrote :
http://www.kkn.net/~tree/2006_Stew.htm
LOTS of QRP entries last year!
Elecraft K2 mentioned in SOAPBOX by four separate entries. I'm sure
there were more.
K2 here (#2 qrp).
Pat N8VW
Lyle,
Thanks for the info.
Would I be right in assuming the more conversions, the
higher the phase noise, even if crystal oscillators are used?
In the homebrew receivers, I used B+W coil stock, which
I think has very high Q...
Brett
N2DTS
Oscillators have phase noise. Properly designed --
Beth,
If the bandpass previously was tuned properly and the behavior is as you
stated, check the VCO frequency at TP1. Compare the frequency obtained
with the internal counter probe with the chart on the Schematic Key
sheet in the manual.
If the frequency of the VCO is not correct, you can
The Owner's Manual (K2) Rev G (May 2007) has
documentation for checking firmware revision numbers.
My K2 does not respond to them for checking the SSB
adapter's firmware revision: Set the SSBA menu entry
to BAL, then hold the VOX button. Nothing happens;
however, I can see a number (1.08) if I
In a message dated 9/3/07 9:34:19 PM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
Would I be right in assuming the more conversions, the
higher the phase noise, even if crystal oscillators are used?
It's not that simple.
A multiconversion rx with quiet oscillators can have less phase
Thanks for all the great replies on and off the list. Lots of good
suggestions. Now to see if I can get a room with a window that opens :-)
Thanks again and 73,
Dave W8FGU
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Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a
On Mon, 3 Sep 2007 23:25:44 -0400, Dave Van Wallaghen wrote:
Now to see if I can get a room with a window that opens :-)
You'll have the best luck on this in an old fashioned hotel as
opposed to a newer one.
73,
Jim K9YC
___
Elecraft mailing
Take into consideration the fact that the old version is an actual photo
of the rig and the new version is a CAD generated image. The differences were
obvious in the Web views of the rig from front and the rear view.
So, as Elecraft is doing their best to keep us up-to-date on changes, let's
Ken:
Thanks. What I already have must not be standard banana plugs, because
they
won't fit. Guess I'm going on a shopping trip...
73.
If I remember correctly, Pomona makes a standard size adaptor and a miniture
one. I bought the smaller one and
Hmmm. I can't speculate on the problem Jim, but my K2 behaves per the
manual. Simply holding VOX with the MENU set to SSB BAL brings up the SSB
module rev (1.08).
Perhaps the first place to look is to see if your main microcontroller and
I/O controller firmware is current. They should be:
2.04P
With the XIT and / or RIT on, can you cause the resultant frequency,to
be the operating frequency with the press (or press hold) of a button?
For example - I'm on 7025.22 and the RIT is up 1.33 kc, so I'm listening
on 7025.33 and transmitting on 7026.55.
I'd like to press a button (or press
Thanks for the tip Lee, it got me to looking at the TX mixer / buffer part of
the chain. The ALC / BFO line into the mixer is consistent across bands,
(however the micro controller quickly drives the ALC to max at 28 mhz). The
mixer output looks ok, as well as the output on pin 6 of the buffer.
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