As Don, W3FPR has already pointed out, alignment of the K2 is straightforward
and requires no test equipment. By following the instructions in the manual,
as well as the frequency calibration info provided on Don's website, my dial
calibration is now accurate within about 20 Hz, using WWV as a
Mmm, not really sure about that any more... as stated a few days ago I
have seen the signals transmitted by my K2 (SN 5549) and I'm not really
happy with them (especially on 10-12 and 30m).
Anyhow, in a few days a friend of mine with (semi-) professional will
try to tweak the filters to see
Hi Guys,
I seem to have K2 #5885 perking along quite well. I also installed
the NB, DSP, SSB board and 160 board. With those behind me, I'm on to
the KPA 100.
On my initial voltage checks, page 25 of the manual, I'm getting some
bad readings.
Test PointReading
Jurgen ON5MF wrote:
Mmm, not really sure about that any more... as stated a few days ago I
have seen the signals transmitted by my K2 (SN 5549) and I'm not
really happy with them (especially on 10-12 and 30m).
Anyhow, in a few days a friend of mine with (semi-) professional will
try to
For a few days now, I've been driving my Ameritron AL80B amplifier with 10-15
watts from my K2, yielding roughly 100-150 watts output on CW (no QSK). It's
been working very well. I thought I'd share how this is implemented, in case
anyone else is interested.
I have three rigs (Omni 6, K2
Jurgen,
You will probably find that even with better filter alignment, your spurs
will not be reduced.
I would tend to believe that you have an oscillator in the K2 that is not
behaving properly. You should check both the BFO and VCO for signal purity
with the Spectrum Analyzer and work on the
Don,
Is U1 installed the 'right way around'? The voltages you measured with U1
removed seem to be correct for that condition.
You may have a faulty U1 on your hands.
73,
Don W3FPR
-Original Message-
Hi Guys,
I seem to have K2 #5885 perking along quite well. I also installed
the
Boy, I don't get this one at all. The whole essence of Elecraft,
IMHO, is doing it yourself and getting something really great for the
effort. That's a conjunction: doing it oneself AND getting a great
product. If all you want is the latter, there are plenty of other
sources. And if
Boy, I don't get this one at all. The whole essence of Elecraft,
IMHO, is doing it yourself and getting something really great for
the effort.
To each his own. Some people don't have the confidence to do the alignment.
Send me your K2 and $100 (I accept PayPal) and I'll align it to
Seems to me that a few might be missing the main point here. While
assembling a K2 there are a few hundred parts to be stuffed into holes.
It is not all that difficult to stuff the wrong part into a pair of
holes. Seems that I remember a firm (Sherwood Engineering I believe was
the name,
I need to disable the antenna tuner in my K2, while conducting a test.
I can't seem to find a menu option to accomplish this. Any ideas how
to do this?
Thanks,
Bob
wb6kwt
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I have a KDSP2 unit for sale. I built this unit last year when I built K2 SN
5251, and it works fine, but I have installed a KAF2 and it is more
convenient for me, as I am a CW-only operator. Included are the manual, a
new battery in the Elecraft envelope and the headers needed for
installation.
I have a K2 (QRP) for sale. It has:
KAT2 Antenna Tuner
KSB2 SSB Adapter (2.6Khz bandwidth and KI6WX modifications)
KNB2 Noise Blanker
K160RX 160M - Receive Ant. Adapter
KDSP2 DSP Clock
FDIMP Finger Dimple
KIO2 RS-232 Interface (homebrew - computer control only, no Elecraft control
signals, but
I have a new and unused Elecraft Heil MH2 mic for sale. $75 OBO shipped
CONUS.
tnx 73, Doug -- K0DXV
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Bob,
Try the menu parameter for the ATU - either CALP or CALS will bypass the LC
section of the ATU, see the KAT2 (or KAT100) manual.
73,
Don W3FPR
-Original Message-
I need to disable the antenna tuner in my K2, while conducting a test.
I can't seem to find a menu option to
The MH2 mic has been spoken for.
Thanks -- Doug --K0DXV
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Just measure this:
TX: 28.400, 10W
Spurious found at 27.317 MHz approx 30-40 dB down !. This spur is coming
from (I think) 2 * VCO - 4 * IF (2 * 23.485 - 4 * 4.915)
It depends a lot on the power control setting, if you go above 10W it will
increase a lot and below 10W it will get better, but
That's the 10X2 female socket, mine seems to have suffered a flaw in
manufacture, on one complete row the plactic is indented leaving the
holes closed. Now, I realise Elecraft will send me a replacement but
they're on one side of the Atlantic and I'm on the other :) so it might
take a while.
Dave,
Yes, I agree. Several folks have sent me their K2 just for such a checkout
and calibration and alignment. I have the advantage of being familiar with
the K2 and its normal behavior. BUT with a little bit of ingenuity, each
builder can determine if his K2 is performing up to par without
FOR SALE: Brand-new Super Antennas MP-1 with Tripod.
Please see: http://www.superantennas.com/
This is a great portable vertical antenna that can cover 40 to 6
meters. Has sliding adjustable coil similar to the Yaseu ATAS-25.
The unit is rated for 150 watts.
$75 + $7.50 shipping.
The XYL
Mike,
If you have the time to do it, I believe that it is well worthwhile arming
yourself with test equipment to do the job yourself. Although this sounds
like a tall order, most of the test and calibration equipment required to
check the K2 can be in fact be homebrewed, which obviously takes
Frank, my experience is that Elecraft's response is truly first class.
Email them with a description of the part, board it comes from and part number.
Describe the fault and don't forget to include your name and address. They
send it out next working day. Replacement parts have all reached
Frank,
Since you have only the Elecraft part number,and not the manufacturer's
number, I would recommend you obtain a replacement from Elecraft. While you
surely can obtain 0.1 inch spaced 20 pin dual row female connectors
somewhere in the UK, they may vary in height, and for that application,
Geoff, G3NAQ wrote:
So I have installed a dummy panel in the shack on which a number of
difficult-to-adjust trimmers and coils are mounted, all requiring
different
trimming tools which I usually have to hunt around to find. Thus, when I
hear that weak DX I just can't copy, and get those
I am slowly progressing on my KPA100. I am at the
part where the board and heat sink are temporarily
mounted together to provide the proper spacing for
soldering the final transistors.
The five standoffs that go between the board and the
heat sink are all 3/16, however, the heat sink has a
Don,
Not sure the price for the tests required would be as steep as you
mention. I think it would be an expense that some would be willing to
pay to be assured that the rig they are using is up to speed. Remember
we are not looking for 1 dB or even 3 dB here, we expect to find
elephants.
Initial test voltages on pg 23 of KPA100 manual test points are off,
where to start troubleshooting? U1 pin15 = 5.53v should be 0,
pin20=0v should be 5v, pin27=0v should be 5.8v, pin28=0v should be
5.7v, Also U4 pin11 = 0v should be 5v, U6 pin6=4.96v should be 0-.5v.
All other pins test within
Don, Dave,
Thanks for the replies and the advice, guess I'll finish my inventory
just in case anything else is missing/damaged before emailing home :)
73, HNY
Frank GI4NKB
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The KDSP2 that I offered for sale is sold.
Bill Stewart, K5EMI
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Hi Group,
It is a new and unused microphone in original Kenwood box. It fits the K2
8 pin configuration. My price is USD45 inclusive of shipping by airmail.
If you are interested, please email me off the list at my email address
[EMAIL PROTECTED]
73 HNY
Johnny Siu VR2XMC
Ed,
Check your soldering - especially around U1. Pins 1 and pin 20 should be
connected together, so if you have a proper 5 volts at pin 1 and zero volts at
pin 20, you must have a soldering problem.
Your soldering should flow out to a smooth edge on both the solder pad and the
component lead
Has anyone on the reflector used their K2/100 with the QSK-5 to
control an older power amplifier? If yes, please advise me on how it
worked out.
Thanks,
TR, WB6TMY
http://www.radions.net/spamfltr.htm
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My construction of the K2 is progressing, SSB and noise limiter are
installed and I installed the 160 M module this afternoon. Just after
sunset the 160 meter band was full of activity.
I have a concern about the 160 meter alignment.
Manual page 9. step 2. Set VFO for 1800.10 kHz
Select CAL
What don't I get?
As far as I can tell, Elecraft does do alignments.
http://www.elecraft.com/repair.htm
Has this service been cancelled but the web page not updated?
de Doug KR2Q
[snip]
IMPORTANT: You must contact Elecraft before mailing your kit to
obtain authorization for the return,
Hi Hank,
Look at the Errata for your module. I always incorporate the errata
into the manual before I start building, just to make sure I don't miss
anything. If you didn't get the errata you can download it from
Elecraft's website.
In any case, it states that you don't need to do the
Original Message 1
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED] net
Subject: K2 problems
Date: Sat, 30 Dec 2006 21:46:02 -0600
Hi
I finished assembling K2 # 5846 a few days ago and have a problem
that I need some help on.
After finishing the initial alignment I could hear signals on
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