My guess is that somewhere in writing that example the numbers changed
(likely because the author wanted the result to be 30 dB instead of dealing
with 29.6 dB and explaining away the fact that the tenths digit is
insignificant so should be rounded up). 1.48 *is* the log of 30, so
apparently the
Mike / KK5F wrote :
My favorite straight key isn't any of the many military keys I have.
It is the commercial Nye Viking Model 330-001 Master Key, which comes
with a nicely weighted base, and with enclosed keying contacts in the
base that keep all voltages off the exposed key parts.
~~
N2CQ QRP CONTEST CALENDAR
May 14-31, 2005
~~
Mid-Atlantic QSO Party (CW/SSB/FM) ... QRP Category
May 14, 1600z to May 15, 0400z
May 15, 1100z to 2400z
Rules:
Mike Markowski wrote on 05/11/05 15:28 ET:
My 11 year old son KB3KYB has been fascinated by my recent K2 kit
building. [...]
Wow, guys, I want to say thanks to each and every one who responded both
on and off list! I didn't expect nearly so many replies. All are very
helpful, and now I have
The J-37 I have is a KY-116G...Very plain, austere key...IMHO it is obvious
that the 2 J-38's are of far superior construction, especially the pivot
bearings...The J-38's also have a shorting switch, the J-37 does not, although
I would never use that feature anyway...
I have a straight key
Hi there,
Long time being on this list due to K2 number 716
Now I updated the rig to a Rev B and have the following problems.
Output without AT all OK
When I put the AT between then no relays are heard and the display
shows LO P
In the menu all settings L0 through C0 the relays are clicking.
Line B. of the example should read : log(33)=1.52
Apparently there was a typo in line B that propagated into line C. The log
of 30 is 1.48, that's where the value of 1.48 in line C came from.
Example should read:
A. R=1.0/0.03 = 33
B. log(33)=1.52
C. 20*1.52=30dB
D. MDS= -107dBm - 30dB =
Thanks to all who have responded to the Handedness survey (49) so
far. I'm going to be in Reno Fri - Sun (Va Hospital appt and weekend
with with #2 son and family) . Still time to get included ... I'm going
to publish the results on Tue, 17 May.
Please '86' my statement that comments will
The K2/100 has been sold ... thanks
Tim
NZ8J
- Original Message -
From: NZ8J [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Monday, May 09, 2005 2:26 AM
Subject: [Elecraft] FS: K2/100
I have for sale a K2/100 (serial number 4486) it has the following
options:
SSB
NB
160 meters
The key has been sold...
Thanks
Tim
NZ8J
- Original Message -
From: NZ8J [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Monday, May 09, 2005 2:56 AM
Subject: [Elecraft] FS: Schurr Profi-2 CW Paddle
Lots of cw operators here, so.
Excellent condition, very nice paddle, read the
Will also take cash offers or trade for a small 100 watt solid rig of some
type.. please make offer if you're interested
Thanks
Tim
NZ8J
- Original Message -
From: NZ8J [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Monday, May 09, 2005 2:51 AM
Subject: [Elecraft] Trade Wilderness
Posting this because of the CW component.
Hi All,
Christie K0IU at HRO Burbank just informed me that Chip K7JA (Yaesu)
and a traffic handler friend will be competing on NBC's Tonight
Show with Jay Leno against a pair of cellphone text messengers
to see who can transmit a message the
Art - W6KY wrote:
I know Chip. Why do I think the 'CW' will easily beat the cell phone message
system...
Because it already has:
http://www.timesonline.co.uk/printFriendly/0,,1-2-1571664,00.html
And in other news, would you believe broadband over gas line?
http://www.nethercomm.com
Ya
Of course the results could be skewed since it is not a completely
random survey as well. That is, you are tallying results from only
those who responded. Maybe those folk who are left handed felt more
compelled to respond than those who are right handed. Interesting,
nonetheless, as to
The Guinness World's record for their stock sentence is 57.75 seconds. That
works out to a leisurely 24 wpm. I don't see any contest here as long as
Chip can send better than 24 wpm.
Here's the Guinness sentence required for record attempts:
The razor-toothed piranhas of the genera Serrasalmus
I put in a k60xv board and the new firmware. i also did the cw bandwidth mod.
now i have no cw sidetone. any ideas? it was just fine before the mods.
ed wa3drc
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post
I've been using my QRP K2 for the last 2-3 years with a full sized Palstar
tuner. I use a variety of antennas from 160 to 10 meters, fed with coax,
ladder line, choke baluns, the Elecraft balun, etc. I'm thinking about
going to an auto tuner (Dayton Hamvention coming). Has anyone compared the
I will be demo'ing my E-Meter digital wide dynamic range power/SWR meter
at the SteppIR booth at Dayton this year. The E-Meter will be of
interest to Elecrafters bcause it provides accurate power readings from
10mw to 2500W, and accurate SWR readings from 50mw to 2500W. The demo
will
Hi Gary.
I'm glad to say that my K2 is now fully alive!
I had a bad solder joint on the 12 v line to the final amp.
Now proceeding with construction of SSB and ATU.
Thanks for your help.
73's
Yves Dussault-VE2ATD
Laval, Québec.___
Elecraft
Ed WA3DRC wrote:
I put in a k60xv board and the new firmware. i also did the cw bandwidth
mod.
now i have no cw sidetone. any ideas? it was just fine before the mods.
--
Check your sidetone source, Ed. MENU, STL press/hold MENU to enter sidetone
level set mode, the tap
The new firmware has a new submenu that allows you to select whether
sidetone comes from U6-25 or U8-1. With the mods required with the new
firmware, you don't have a choice. You MUST select sidetone from U8 or it
won't work.
Eric
KE6US
-Original Message-
From: [EMAIL PROTECTED]
guys,
tnx! found it!
ed wa3drc
- Original Message -
From: EricJ [EMAIL PROTECTED]
To: 'Ed Finn' [EMAIL PROTECTED]; elecraft@mailman.qth.net
Sent: Thursday, May 12, 2005 11:08 PM
Subject: RE: [Elecraft] k2: no cw sidetone anymore...
The new firmware has a new submenu that allows you
Thanks to all who have responded to the Handedness survey (49) so
far.
Out of 49 respondents, and a world average of 10% left-handers (that
would be 4.9%), it seems my friend might have been right. Either
the fraction of hams who are sort of to really left-handed is
larger than 10%, or
Parker et al,
QST did a review and test of a bunch of balanced tuners a year or so back.
I don't remember too much of it now but remember being shocked at how high
the losses typically were. As I recall efficiency ran in the 65 to 75
percent range for many of them. The Johnson matchbox was
Parker Don;
I haven't tried to measure the efficiency of the Elecraft tuners. It is a
fairly difficult measurement to make correctly when the input and output
impedance are significantly different. However, there are two effects to
consider in tuner efficiency.
At high power, an
I haven't had lots of different tuners to compare myself, but I do have
a Johnson KW Matchbox tuner. It does a great job on Balanced lines. I
didn't really know about the Palastar but just checked it out on the
website. Looked like an interesting tuner. But to me the downside of
it was
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