Hi,
I am in the final alignment and tests of my K2/SSB/PA100, which seems to be
going very well, . but I am facing my first real problem with an Elecraft
kit, the 2 T GEN.
This is rather frustrating, since there are only a few components, no
toroid, etc.
The 700 Hz generator works
W4ZV sed:
[snip]
Elecraft promised to post full IMD/BDR
measurements for all filters but has not done so thus far.
[2nd snip]
I commend Elecraft for posting full data in advance but sure
wish they would get on with it so I can finalize my order
[end snip]
I heartily agree
What's
In the Oct 2007 product review section (on line version for Members
Only), the ARRL explains their newest methodology for RX measurements.
While improving methodologies are always welcome, I sure wish they
would also provide info using the old method measurements, so we can
compare apples to
I either want a K3 or I do not.
If I do (and I do), I feel if the rig is good, the filters are good.
So, the exact measurements of anything in the radio are beside the point...
I know I want the radio and I want filters for narrow SSB and general CW, so
I add extra 1.8 and 500.
DONE (Note:
K4VUD:
So, the exact measurements of anything in the radio are beside the point...
I know I want the radio and I want filters for narrow SSB and general CW, so
I add extra 1.8 and 500.
DONE (Note: I did this without worrying about data).
Lewis Carroll (1832-1898):
If you don't know where
In a message dated 9/12/07 11:12:05 PM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
the Heathkit SB-200 has several
modifications that can be made to it, one of which is the reduction of drive
power to excite it.
What is modified to do this?
Does anybody have any idea what the
Sounds as if he just likes to build stuff, not so much actually use it.
Bill W5WVO
Ken Kopp wrote:
Not quite sure what you're trying to say ...
Move on ... to what?
I don't know of a kit that's anywhere close to being an
alternative to the K3 ... or the K2, for that matter.
73! Ken Kopp -
Fellow Elecrafters:
I have had a strange problem with my K2, that I've both discussed
previously on the list and discussed with Scott at Elecraft. The
problem was that the rotation of the tuning knob would occasionally
feel rough on my fingertips as it turned, and I heard what I thought
were
Raymond,
I believe the oscillator should oscillate even with Q1 removed. Look
carefully at the feedback loop around U1A particularly C2, C4, R1, R2
and R6. Be certain the jumper blocks are in the 'T' position.
The most likely problem is soldering or a misplaced component. Use a
magnifier
If I do (and I do), I feel if the rig is good, the filters are good.
That's the sad part - how does one get the feeling just by looking at a
pretty picture, assembly manual with no schematics and a bunch of beta testers
who are probably biased to the elecraft products anyway?
My guess is
Hi Gang,
I am looking for a crimping tool for putting Pl-259, BNC and SMA
connectors onto RG-58, RG-141 maybe even 316 type coax. It will
primarily be used for making test cables for my workbench right now.
However, it would be nice if it did RG-8 as well. I realize I can just
Google
Are you serious?
Your choice obviously, but just because Elecraft produce an assembly doesn't
seem like a substantial reason to sell an existing product you built. Or to
move away from a company that will continue to produce kits (I'm sure).
There have been many discussions about why the K3 is a
- Original Message -
From: Bob Fish [EMAIL PROTECTED]
To: qrp-l.org [EMAIL PROTECTED]; [EMAIL PROTECTED];
elecraft@mailman.qth.net; [EMAIL PROTECTED];
[EMAIL PROTECTED]
Sent: Thursday, September 13, 2007 5:01 PM
Subject: [QRP-L] Crimping Tool
Hi Gang,
I am looking for a crimping
Bob Fish wrote:
Hi Gang,
I am looking for a crimping tool for putting Pl-259, BNC and SMA
connectors onto RG-58, RG-141 maybe even 316 type coax. It will
primarily be used for making test cables for my workbench right now.
However, it would be nice if it did RG-8 as well. I realize I can
One crimp tool often only does one sze connector and one size cable so
you may need a whole box full.
Here, a single good qualoity crimp tool might easily be 200-300 USD each
so you may be looking at a significant investment.
I only use solder connectors.
Bob Fish wrote:
Hi Gang,
I am
I'm trying without success to optimize resistor RA on the K2
thermistor board.
I should first say that the temperature compensation with the
provided 33K resistor is quite good--I just wanted to optimize it.
With RA at 33K, I'm measuring drift on the 40 and 80 meter bands
after
I'm having a hard time wrapping my brain around this one. I have a
license so that I can OPERATE a ham radio and by all indications the K3
looks like it will be a wonderful rig to operate. Kit or not, it will
be great.
My K2 was a kit. I spent a month or so building it. I've spent the
last 18
Charles Harpole wrote:
So, the exact measurements of anything in the radio are beside the point...
I know I want the radio and I want filters for narrow SSB and general CW, so
I add extra 1.8 and 500.
In that case you may have wasted your money as you haven't given one of
the valid reasons
On Sep 13, 2007, at 10:04 AM, David Woolley wrote:
Charles Harpole wrote:
So, the exact measurements of anything in the radio are beside the
point... I know I want the radio and I want filters for narrow SSB
and general CW, so I add extra 1.8 and 500.
In that case you may have wasted your
-Original Message-
From: Darwin, Keith [EMAIL PROTECTED]
My K2 was a kit. I spent a month or so building it. I've spent the
last 18 months operating it. Beauty of operation pays dividends long
after the joy of building has ended.
Like I say, I'm having a hard time wrapping my
Suppose the K3 is set to any frequency, 2.8 khz USB
and there is an S9 carrier at that frequency.
You press the auto notch.
Does the S-Meter still register S9?
You turn off the auto-notch and remove the carrier
with the manual notch.
Does the S-Meter still register S9?
Anyone?
Don Rasmussen wrote:
Suppose the K3 is set to any frequency, 2.8 khz USB
and there is an S9 carrier at that frequency.
You press the auto notch.
Does the S-Meter still register S9?
You turn off the auto-notch and remove the carrier
with the manual notch.
Does the S-Meter still register S9?
Here you go! These are recent measurements from our lab.
Filter20kHz 10kHz 5kHz 2kHz
200 Hz, 5 pole100+ 100+ 100+ 95
250 Hz, 8 pole100+ 100+ 100+ 95
400 Hz, 8 pole100+ 100+ 100+ 95
500 Hz, 5 pole100+ 100+ 100+ 94
1 kHz, 8 pole 100+
OMG! I died and went to heaven!!
Thanks a lot EricOUTSTANDING!
de Doug KR2Q
On 9/13/07, Eric Swartz - WA6HHQ, Elecraft [EMAIL PROTECTED] wrote:
Here you go! These are recent measurements from our lab.
Filter20kHz 10kHz 5kHz 2kHz
200 Hz, 5 pole100+ 100+
On Thu, Sep 13, 2007 at 02:39:52PM -0400, DOUGLAS ZWIEBEL wrote:
OMG! I died and went to heaven!!
Now that we have that out of the way - I would offer that I am very happy
thus far with the 400 hz CW filter. I have used it in 3 different contests
and my almost daily 160 meter weak
We're being conservative, too, hence the + signs in listings like the
one below. The average 5/10/20 kHz IMDDR3 from all the tests on narrow
filters comes out to around 104 dB, and we've seen 2 kHz numbers as
high as 98 dB. But Eric probably doesn't want me to mention that :)
500 Hz, 5 pole
Thanks...I almost I have enough to
finalize my order. Please fill in the blanks:
Filter BW Shape Factor
200
250 370 2.1
400 435 2.1
500
100010631.6
1800
2700
280028881.6
*All data taken from 8-pole
There's no swamping resistor in the SB-200, there's tuned inputs
I used one with my K2-100 until very recently (since replaced with a
Transworld solid state KW
amp) and it does behave linearly. The only caveat is that you need to use an
interface
between keying line of the SB200 K2 ... no
I take it from the comments so far that these are pretty good. :) As
someone who knows more about PHP than IMD, could you give us the for
dummies version?
As someone whose main interests will be QRP PSK31 and CW, not serious
contesting, which if any of these narrower filters would I benefit
from?
One method I use is to receive all mails from reflectors in a daily
digest, all postings to the reflector will come in a single mail one or
perhaps two times a day, starting with a summary of subjects first, and
then all individual mails below.
First I check the summary for something of interest
I just received my Sept/Oct issue of National Contest Journal. It has
a very nice 5 plus page First Impressions review of the K3, by N6XI.
John
k7up
K2's #2012/2223 K1# 637
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You must be a
Then you had better send Elecraft your new address so that you get your K3;-)
Gary, N7HTS
K2 #6113
On Thu, 13 Sep 2007 14:39:52 -0400
DOUGLAS ZWIEBEL [EMAIL PROTECTED] wrote:
OMG! I died and went to heaven!!
Thanks a lot EricOUTSTANDING!
de Doug KR2Q
On 9/13/07, Eric Swartz -
Hi Bill,
I've added the 1.8 kHz 8 pole filter plot to the web page. Its 6 dB b/w
is 1.913 kHz and the shape factor is 1.5
We just measured the following in the lab:
The 200 Hz 5 pole filter -6 dB b/w is 224 Hz (200 Hz at -3 dB). Its
shape factor is 4.0.
The 500 Hz 5 pole filter -6 dB
ive tryed the last 2 nights to get it i cannot get the link to download page
to work i just a blank screen
chris g0wfh
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We're four days from the target date for the first K3
delivery and performance numbers are being released.
What could this mean? ;-)
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On Thu, 13 Sep 2007, Don Rasmussen wrote:
We're four days from the target date for the first K3
delivery and performance numbers are being released.
What could this mean? ;-)
That there really are K3s, that there are measurements and Santa Claus
has gainful employment.
73 - k3hrn
Thom,EIEIO
Hi all,
I've just ordered a couple of BL2 kits, one of which is to go into an
enclosure without the PC board. Does anyone know the external dimensions of
the cores so I can size a suitable box?
Thanks in advance,
Paul M1PAF
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And we're still short several key parts, so we won't ship on the 17th. :-(
I'm waiting for replies from several vendors and will post as soon as I
have good information. I'm beating on them as hard as I can.. :-)
73, Eric WA6HHQ
---
Thom LaCosta wrote:
On Thu, 13 Sep 2007, Don
Oh well, it was fun dreaming the balloon had gone
up, but I'm pretty sure even with the vendor delays,
nobody's getting bored in Aptos!
[Elecraft] K3 specs
Eric Swartz - WA6HHQ, Elecraft eric at elecraft.com
Thu Sep 13 17:42:00 EDT 2007
And we're still short several key parts, so we won't
Bored? No, but getting more sleep is a nice goal! ;-)
We're getting very, very, close. Its always these last minute delays
that drive you (and us) crazy.
73, Eric WA6HHQ
-
Don Rasmussen wrote:
Oh well, it was fun dreaming the balloon had gone
up, but I'm pretty sure even with the
Presumably, the 8 pole filter would have steeper skirts but a higher
insertion loss than the 5 pole filter.
Don't know how it will play out in the real world. I decided to wait on
ordering roofing filters until more is known.
Craig Buck
k4ia
Fredericksburg, Virginia USA
Chris,
Are you trying the direct link? The file names may have changed when
the 'web-res' and 'hi-res' manuals were introduced.
Go the the Elecraft website - click on the link below the K3 picture and
on the page that loads, right click on the link for either the Web-Res
manual or the
WU7R:
I didn't order any filters not knowing which ones to order.
Since Elecraft has now posted the data I needed, here's what
I'm probably going with:
Main RX: 2.7k stock, 1.8k 8-pole, 500 Hz 5-pole
Sub RX: 2.7k stock, 500 Hz 5-pole
My reasoning is that the 1.8 will be
I'm beating on them as hard as I can.
Need any volunteers to help ???
;-)
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Dick,
You did not mention that you ran CAL PLL after each trial value of Ra.
If you did not do that, the frequency indicated in your tests may not be
correct.
Also keep in mind that the compensation is applied to the PLL only.
Temperature variations in the BFO will also change the
The differences in filter loss are made up automatically in the DSP, and
we have a good enough noise figure in the front end that the overall
sensitivity of the RX does not change significantly.
73, Eric WA6HHQ
[EMAIL PROTECTED] wrote:
Presumably, the 8 pole filter would have steeper
~
N2CQ QRP CONTEST CALENDAR
September 14 - Oct 14,2007
~
FISTS: Get Your Feet Wet Weekend ... QRP Category
Sep 14, z to Sep 17, z
Rules:
Eric,
If you want someone else to beat up on the vendors...just list their
names here on the reflector. I am sure they will then be flooded with
phone calls.
Better yet, if those vendors need help in getting their products to
you, maybe we can mobilize some K3-owners-to-be to quickly
Hey, u want to beat up on the vendors? Better get an air ticket because
lots of parts are not MADE IN THE USA anymore, if ever.
for example, people ask me how can u take medicine there in Thailand?
Answer, my meds come from same place as urs in usa India, China, and
some other less
Hi Buck,
Primarily cost. The 5 pole is significantly less expensive, but has a
wider shape factor.
73, Eric
_..._
[EMAIL PROTECTED] wrote:
In a message dated 9/13/2007 7:01:15 P.M. Eastern Daylight Time,
[EMAIL PROTECTED] writes:
The differences in filter loss are made up
Gosh, Henry -- I don't think you thought through the political-economic
dynamics here. :-)
The vendors in question must be single-source on these parts, or they would
have been back-up ordered from a secondary source and there wouldn't even be
an issue. If these vendors get all kinds of
I am at the 40-meter transmitter alignment stage in Alignment and
Test, Part III.
It instructs me to Place the K2 into tune mode and activate the
built-in wattmeter by holding TUNE. Using the alignment tool,
adjust L1 for maximum output. And, do the same with L2, etc. etc. etc.
First,
For those of you who may be interested, I sent the following query to
Lisa at Elecraft:
I apologize for adding to your load but I have a quick question.
I have an order in place for a K3.
I would like to make changes to my order.
Should I wait for a notice from Elecraft that my order is about
Rather than add to Lisa's load I'll first ask here
Has anyone inquired about paying the balances that
many / most of us will owe when the K3's are ready
to ship?
I'm under the impression that a CC # used for the initial
deposit is NOT kept on file and therefore she'll need a
CC # to
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