Hello all, i am in the adjust phase of build my K2. My main problem not
solved yet is that 8V tx voltage line is with 5.1 v permanet.
Microprocesor tx order is down and rx is up, so here all is rigth,
colector of Q1 is with 5.1. Also RX voltage seem to be down, not 8V but
6.5. Receiver work, i
Jesus,
You will have to resolve that problem before proceeding.
The most likely cause is something wrong with Q1, Q2, Q3 or Q4 on the
control board.
First check the operation of the TX and RX signals. During Receive, RX
should be near 5 volts at the gate of Q4 and TX should be near ground at
Thanks again Don. The resistor and Icom pinout seems to be working fine.
BTW, I have tried to talk with Heil, but my emails have gone unanswered and
thought maybe someone else on the list had already done this. Since that
doesn't seem to be the case, I've now done it successfully and maybe can
Actually, the 9834 is now spec'ed to 75MHz. Problem is
finding oscillators.
It happens to be the very same DDS in the KD1JV ATS
radios and a few folks have already swapped DDS chips,
changed the oscillator, modified the DDS filter,
changed the firmware and put their rigs on higher
bands--12M
K1 Serial Number 2305 operational on 2/6/07.
2-Band (2040)w/Antenna Tuner
Antenna: 30-ft long wire strung over tree branches.
First QRP Contact: W4IT (Steve)
From: Dallas, TX to Gray Court, SC
This little rig is A BLAST!
You will find the receiver supurb during heavy QRM situations like contests!
Best QRP rig I ever owned. I have 4 band board (40/30/20/15) and a 2 band
160/80 meter board. If I did it all over again, I'd opt for the little
external tuner (T1?) instead of the internal tuner. It would make
wa5pgl wrote:
K1 Serial Number 2305 operational on 2/6/07.
2-Band (2040)w/Antenna Tuner
That's 2130 K1 units since my number 175 arrived in November, 2000. I ordered
it in June, so I waited five months. It was worth it. I'm not all that fond
of the monotony of stuffing resistors and
The reason I went with a 3 Diopter magification lamp was for the longer focal
length compared to the 5 Diopter. I also purchased one with a
rectangular lens
where the lens rotates in its mount, --- independently from the moveable
arms.
The 3 power reading glasses I picked up at Wally
Mike wrote:
Actually, the 9834 is now spec'ed to 75MHz.
I believe that's only since mid-2006. Most of the installed base of AD9834
chips would be 50 MHz rated.
Problem is finding oscillators.
That's seems to be very true if one searches on-line catalogs. The one for the
KX1 comes
K2 #5944 is up running. For me, the challenge is to see if I can build one
of these things without making any mistakes. Succeeded with the Norcal
40A, and also with the K1. But with the K2, I met my match. The preamp
wasn't working, and sure enough, after checking the Elecraft e-mail list for
I have assembled sn 1700 built to manual Revision C, January 5,2007. Thus
far all checks have been within specifications.
When carrying out the power output tests I find that my results are a little
low and that the 20m power level is greater than the 40m power level. (Power
levels measured
I too tried the KBT1. One minus was my hearing asn't that good anymore
after years of working around jet aircraft and doing a lot of shooting under
a range shed (before cheap ear protectors were available! They were $125 or
more then...early 60's) Anyway the smaller speaker's output too low
If you are in the mood to say something about your K2/100 on eHam, we
can always use more reviews! See:
http://www.eham.net/reviews/detail/2357
We definitely could use some new ones in this eHam category.
And if you are in the mood to review one of our other products, we have
an eHam category
Don Wilhelm wrote:
Jesus,
You will have to resolve that problem before proceeding.
The most likely cause is something wrong with Q1, Q2, Q3 or Q4 on the
control board.
First check the operation of the TX and RX signals. During Receive, RX
should be near 5 volts at the gate of Q4 and TX should
Jesus L. Paleo wrote:
Hello all, i am in the adjust phase of build my K2. My main problem
not solved yet is that 8V tx voltage line is with 5.1 v permanet.
Microprocesor tx order is down and rx is up, so here all is rigth,
colector of Q1 is with 5.1. Also RX voltage seem to be down, not 8V
- Original Message -
From: Ken Kopp
To: elecraft@mailman.qth.net
Sent: Friday, February 02, 2007 2:59 AM
Subject: [Elecraft] magnifying Lamp
Info ... the Optivisors (SP) come in several levels of magnification.
Check the Ott-Lite product line that's available at sewing-
related
Hi
I just completed my K2 and working on the KPA100. I am having some
problems with the initial tests.
Manual has revision D included as a correction sheet.
Page 20 of manual has list of resistance points to be measured. All
points are within tolerances.
Firmware of K2 is 2.04P
Page 23
Hey friends, how hard would it be to implement something along the
lines of an IF shift, ala the TS830S IF shift? That's something I
really like about my 830 and it seems like it would be a nice addition
to the K2.
Along the same lines, would it be feasible to have an outboard S-meter needle?
I
Hi all,
After one year I prepared the K2 for the upcoming PACC contest. I removed
the KPA100 last year because I wanted to use the K2 as an exiter for my
transverter setup. I removed the K60XV module and put the KPA100 in place. I
found out the the power output is around 70 Watts on all bands
What is the point of IF shift? What purpose does it serve?
Can't you do the same thing (or nearly so) with RIT?
My understanding of IF shift is that it allows you to move an
interfering signal to the edge of the passband and attenuate it by doing
so. Seems that nearly the same result can
dave wrote:
What is the point of IF shift? What purpose does it serve?
Can't you do the same thing (or nearly so) with RIT?
My understanding of IF shift is that it allows you to move an
interfering signal to the edge of the passband and attenuate it by doing
so. Seems that nearly the same
One of the strengths of the K2 is its single-conversion design. That is, in
part, responsible for the extremely good specifications the receiver enjoys.
However, i.f. shift such as other rigs often feature require a
multiple-conversion design with all the issues that come with additional
mixers,
Hank,
First off, you will see only a single 'flash' of SEC (or PRI) when changing
between the primary and secondary menus - so what you observed there is
normal.
Yes, most voltage measurements in the low millivolt range are the result of
noise/hum pickup on your DMM leads and can usually be
Jeff,
IF shift is practical in multiconversion receivers, but the K2 is a single
conversion design (for fewer spurs, better dynamic range and better IMD).
To implement IF shift in a single conversion receiver would mean changing
the BFO in sync with the VFO - and that is not an easy feat. It
Evert,
I have no idea why you removed the K60XV when you remounted the KPA100, they
live nicely together (unless your K60XV used the BNC connectors in the top
cover.
The 4.7 pf capacitor is not your problem - that capacitor is only used on 40
meters.
To provide more help, we need to know what
Dave and Jeff,
Dave you are right in saying that that both IF Shift and RIT (or even the
main tuning knob) can be used to move an interfering signal out of the IF
passband. The advantage of IF Shift is that the 'beat note' from / of the
signal you want does not change as you move the
Hello,
I own and built K2 # 3706. BTW: It has run flawlessly since built in
September of 2003. I'm going to proceed with purchasing a KP100 and KAT100
soon. I am also ordering the CW keying bandwidth mod kit. Are there any
other upgrade/mod kits needed for upgrading my K2/QRP to the
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