Hi, All.
Thanks to all who responded about the power output being the same
between 20m and 40m.
I was able to run some tests with a recently calibrated HP8591A
spectrum analyzer, and I thought I'd share my results. (I also had a
chance to calibrate the KXAT1 it was reading about 0.25W high).
Martin VA3SIE wrote:
I placed a scanner across the room (with a 2m rubber duck antenna)
from the KX1 driving a magnetic loop antenna tuned to 7040kHz and
transmitted on 7040kHz. The scanner showed full scale deflection. I
then tuned the scanner to the 1st harmonic 14080kHz and the scanner
'S'
Martin,
You may be reading too much into the instructions. It is not required that
the power on 20 meters be lower than on 40, it just usually happens that
way. The fact that you have the same power output on 20 as you have on 40
is not necessarily an indication of a lack of 2nd harmonic
Hi, Elecrafters.
I'm hoping someone can help!
I completed my KXB3080 modification tonight but during testing I
discovered that I am getting pretty much the same transmit power out
(1.8W with 10V) on 40m as 20m (according to the KXAT1 this is the only
watt-meter I have) into a 50 ohm load. I
My Short Takes review, A 30 and 80 Meter Module for the Elecraft KX1 CW
Transceiver, will appear in the November, 2006 issue of QST. It is
available now for download to ARRL members at:
http://www.arrl.org/members-only/prodrev/.
73, Bruce Prior N7RR
On Sat, 7 Oct 2006, Bruce Prior wrote:
My Short Takes review, A 30 and 80 Meter Module for the Elecraft KX1 CW
Transceiver, will appear in the November, 2006 issue of QST. It is
available now for download to ARRL members at:
http://www.arrl.org/members-only/prodrev/.
73, Bruce Prior N7RR
I'm thinking that if I can build it, anyone can. My last real radio
building before the KX1 was a Heath HR-1680 receiver that I build in high
school. For twenty years I was an appliance operator. I had built a TenTec
regen receiver for fun to see if I could still do it and it works fine.
After
To: elecraft@mailman.qth.net
Subject: [Elecraft] KXB3080
I'm thinking that if I can build it, anyone can. My last real radio
building before the KX1 was a Heath HR-1680 receiver that I build in high
school. For twenty years I was an appliance operator. I had built
a TenTec
regen receiver
I have noticed a few posts wherein people have expressed some reservation about
building and installing the KXB3080. If you let this aprehension get the better
of you you will miss out on some great QSO's. Adding the KXB3080 is a lot like
learing code. If you convince yourself that it is too
I'll agree. While the most challenging kit I have made to date, it was far
from impossible.
David, k3tue
.
--- W1IN [EMAIL PROTECTED] wrote:
I have noticed a few posts wherein people have expressed some reservation
about building and installing the KXB3080. If you let this aprehension get
After some pushing the LPF turns back and forth I was able to get all bands
between 3 and 4W with a gel cell supply. Which I guess means it's time to get
out and throw some wire in a tree. Thanks for all the help.
David, k3tue
.
--- Don Wilhelm [EMAIL PROTECTED] wrote:
David,
Spreading
I too had David's (k3tue) problem tuning for a peak on 20M and 40M after
completing the base kit. When I tuned the receiver at the end of Part
II, I connected directly to my longwire and was able to easily peak each
band.
For the final tune, I plugged in my longwire via a 4:1 balun. I went
Hi Folks!
I build KX1 sn/1519 and it worked great! I finished building up the KXB3080
and installed it last night. All the tests were fine as I went along in the
build. However, when I try to peak the receiver, I'm not getting any
signals. I don't have an XG1 or 2, although I might need one!
I had a similar problem (not no signals, just no pronounced peak) when I was
trying to use an antenna through a balun. When I removed the balun the issue
was resolved. The peaks were much more pronounced.
David, k3tue
.
--- Soaring Eagles [EMAIL PROTECTED] wrote:
Hi Folks!
I build KX1
Jim,
One thing that will cause that problem is if the 'D' and '5' wires are
interchanged - they should cross over each other (guess how I discovered
that G)
Did you make the PC trace cut on the KX1 board?
Is T2 wound correctly and installed properly? - it should look like the
photos. Were the
to it. And making it fit under the ATU.
I love it. :-)
Craig
NZ0R
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Don Wilhelm
Sent: Wednesday, August 16, 2006 4:00 PM
To: Soaring Eagles; elecraft@mailman.qth.net
Subject: RE: [Elecraft] KXB3080 problem
Jim
--- Craig Rairdin [EMAIL PROTECTED] wrote:
the KXB3080 is probably the most challenging Elecraft kit to get right.
I agree.
Not to mention the gymnastics required to install it without
shorting that one wire that has to cross behind the board without shorting
to the pad right next to it.
OK, I really appreciate your quick response!
I forgot to mention that the 20B cap does have a peak (not too much, but
about the same as before, but there's no peak on 20A or 40. Also can't hear
a peak on 30A or 30B.
'D' and '5 are correct
The trace is cut (I thought I might not have done it,
Jim,
It certainly sounds like you got it fixed even if you don't know why -
congratulations.
You can likely improve the 20 meter output by spreading the green winding on
the LPF inductors a bit, and 80 meters may improve by squeezing the red
turns a bit. 30 meters will normally have more output
I just finished installing my KXB3080, which seems to work fine. Using my DL-1
dummy load I noted the following power ratings?
When I first tested it I got the following power readings with R4 fully
clockwise:
full power:
20m: 2.8w
40m: 3.5w
30m: 3.7w
80m: 6.3w
Since 80m power out seems too
3) How accurate is the DL-1? Does it tend to read hi (optamistic) or lo
(pessamistic)?
I asked this because the the KXAT1 reads higher than the calculation I get from
the DL-1. The DL-1 matches the KXAT1 if I use the following calculation
(instead of the one supplied in the DL-1 manual):
David,
Spreading the turns of the low pass filter toroids may give you a better
spread of power across all the bands. With a 13.8 volt supply, I typically
expcet close to 4 watts on 80, 40 and 30, and about 3.5 to 3.8 watts on 20
meters using a 14 volt power suppy. Yes, the major contributor to
David,
The DL-1 wattmeter is likely quite accurate. If you are using a slow DVM,
be certain that you allow enough time for the readings to settle down.
The formula in the DL1 manual should be correct with the exception of the
diode drop (the 0.15 constant in the voltage could vary a bit from
Jim -
Yes, I waited for the display to go off before taking the current measurement.
73
Bob
On 5/25/06, k4zm [EMAIL PROTECTED] wrote:
Bob:
Did you measure the current with the display lit? Also the level of
brightness you have the display adjusted for will vary the current drain.
The
I finished the installation of the 3080 option, and everything seems okay, but
my power out seems to have dropped on all bands. Not by a lot, but I'm
wondering if something is amiss.
Here are the numbers, using the same 13.4v external supply before and after:
Band Before 3080 After
Mike,
While a watt or so is not worth worrying about, you may want to check your
KXB3080 installation carefully, especially the new Low Pass Filter toroids.
My experience with 5 KXB3080 kits so far is that the power output will be
close to 4 watts on all bands with a 14 volt power supply - note
Wayne,
I just built installed and tested the KXB3080 modification in my KX1 and
everything went very smoothly. I would like to congratulate you on this fine
product.
Thanks,RickKL7CW
Palmer, Alaska
I'd like to chime in. I added the 80m band to my kx1 on Saturday, and
then gave it a real good work out... it worked flawlessly and the
audio quality is excellent!
What a marvelous addition to the kx1.
73, Paul - ve1dy
Halifax, Nova Scotia
--
QRP-L #2507, SKCC #91
www3.ns.sympatico.ca/ppike
Many of you know Don Wilhelm, W3FPR. Even if you don't know him
personally, you may have benefitted from one of his many postings to
our reflector. Don's an expert on our product line, and we consider him
an honorary (if not official) member of the Elecraft support staff.
With this in mind,
D'Eau Claire
Gesendet: Dienstag, 4. April 2006 06:58
An: 'Martin Gillen'; 'elecraft'
Betreff: RE: [Elecraft] KXB3080 Manual - minor mistake but important
fornewbies?
Martin wrote:
I know it's minor but 0.05 is more like 1.3mm than 0.13mm...
-
Thanks Martin!! All the field
Alex,
The local electronics store had WESD51D stations on sale when I went
looking last
year for the initial KX1 build... The Elecraft mojo was
working for me even
BEFORE I started building!
I'm holding out for the 'Low Static' Soldapullt now - they had to back
order it for me!
-
I was just going out to buy equipment to build this when I noticed:
Fine-tip temperature-controlled ESD-safe soldering station with 700 to 800°F
tip
(370-430°C). Recommend a spade tip approx. 0.05 (0.13 mm) wide. Do not use a
high-wattage iron or soldering gun since this can damage pads,
Weller WTCPT baby! Read the solder tutorial on the Elecraft site, it's
the best I've seen anywhere! 73 de Alex NS6Y
On Apr 3, 2006, at 11:34 AM, Martin Gillen wrote:
I was just going out to buy equipment to build this when I noticed:
Fine-tip temperature-controlled ESD-safe soldering station
Martin wrote:
I know it's minor but 0.05 is more like 1.3mm than 0.13mm...
-
Thanks Martin!! All the field testers, Wayne, Gary and I all missed it!
It's doubly embarrassing for me because I live in metric. Here in the USA
much of the scientific/technical stuff is all
] On Behalf Of
Leigh L. Klotz, Jr.
Sent: Sunday, March 26, 2006 12:04 AM
To: Elecraft Discussion List
Subject: [Elecraft] KXB3080 Done
I finished my 80m board for the KX1 today. I did it over 3 or 4 days a
bit at a time.
The first signal I heard on 80m was noted KX1 owner Bill K6ACJ, but I
don't
I finished my 80m board for the KX1 today. I did it over 3 or 4 days a
bit at a time.
The first signal I heard on 80m was noted KX1 owner Bill K6ACJ, but I
don't think he was on his KX1. He signed before I had a chance to call him.
WA7OSQ Art in Pasco, WA (about 630 miles) was my first QSO,
Howdy Elecrafters:
Considering buying the KXB3080.
Will the KXAT1 tuner in the KX1 match antennas on 80m???
73, Joe W2KJ
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.
Sent: Sunday, March 26, 2006 12:04 AM
To: Elecraft Discussion List
Subject: [Elecraft] KXB3080 Done
I finished my 80m board for the KX1 today. I did it over 3 or 4 days a
bit at a time.
The first signal I heard on 80m was noted KX1 owner Bill K6ACJ, but I
don't think he was on his KX1. He
I have just finished Part I Modify the KX1 PCB section and now I am
attempting the steps for Alignment and Test -Part II for receiver alignment
to confirm that the modifications have been correctly installed. Obviously
I messed something up. Nothing happens during power up. I get power up to
Chuck, KI4DGH asked:
I have just finished Part I Modify the KX1 PCB section and now I am
attempting the steps for Alignment and Test -Part II for receiver alignment
to confirm that the modifications have been correctly installed. Obviously
I messed something up. Nothing happens during power up.
: RE: [Elecraft] KXB3080 HELP KX1 will not turn on
Chuck, KI4DGH asked:
I have just finished Part I Modify the KX1 PCB section and now I am
attempting the steps for Alignment and Test -Part II for receiver alignment
to confirm that the modifications have been correctly installed. Obviously
I
Chuck KI4DGH wrote:
Thanks, That is exactly what I did. I put the screw in there to hold the
nylon shoulder in place while I worked on everything. I removed the screw
and power came on. Its nice to know that I am in good company. BTW I
noticed that if I had gone to the KX1 Manual for trouble
As you may have noticed, 80-meter KX1s are starting to pop up. The
KXB3080 options are in stock, and you can download the manual from our
web site.
We've also updated our KX1 page with more KXB3080 details, including a
photo showing the assembled KXB3080 module itself. (All surface-mount
) and
Saturday night.
I'll also have some handouts.
Michael N4NMR
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of wayne burdick
Sent: Wednesday, March 22, 2006 5:26 PM
To: Elecraft Reflector
Cc: QRP-L
Subject: [Elecraft] KXB3080 option update
Has anyone received their KXB3080 kit yet? How did building and install go?
John Lally
W7JJL
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Yes It arrived in Friday's mail.
Don't know have not had the time to clear the bench to start.
73 John
WA8KNE
John J. Lally wrote:
Has anyone received their KXB3080 kit yet? How did building and install go?
John Lally
W7JJL
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PROTECTED]
To: elecraft@mailman.qth.net
Sent: Saturday, March 18, 2006 6:47 PM
Subject: [Elecraft] KXB3080
Has anyone received their KXB3080 kit yet? How did building and install
go?
John Lally
W7JJL
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If you have the KXB3080 installed what bands does the KX1 work? I couldn't
find the manual on the web.
Thanks
Brent WB4X
- Original Message -
From: Burl Borcherding [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Saturday, March 18, 2006 8:46 PM
Subject: Re: [Elecraft] KXB3080
; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KXB3080
If you have the KXB3080 installed what bands does the KX1 work? I couldn't
find the manual on the web.
Thanks
Brent WB4X
- Original Message -
From: Burl Borcherding [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Saturday, March
Hi Elecrafters,
Will the KXB3080 option manual be available soon on the ''Manual Download
section?
72, de Pierre VE2PID
KX1 # 442
K2/100 # 5170
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Hi Uli,
The KXB3080 kit will be $65 and includes the newest KX1 firmware if
needed. (We've been shipping KX1s with this version (V1.02) since Feb 7th.)
We're putting it into production now and it should be ready to ship in
about 2 weeks. (The only item left to complete is our final review of
Party Time!
excellent news and congratulations on the new baby...
Eric Swartz - WA6HHQ, Elecraft wrote:
Hi Uli,
The KXB3080 kit will be $65 and includes the newest KX1 firmware if
needed. (We've been shipping KX1s with this version (V1.02) since Feb
7th.)
We're putting it into production
Does anyone have a guess regarding what the KXB3080 will cost?
(Elecraft announced the upcoming KXB3080, a 30 and 80 meter option
for the KX-1 which would presumably plug-in where the 30m-only module
lives now.) Just figuring out my ham radio budget for 2006, hi.
Thanks for any guesses,
Wayne,
Congratulations on your design of the KXB3080. I have been the very happy
owner of my KX1 for approximately a year and a half. This new module will make
it even better.
I do have one thing on my wish list for future KX1's (or KX2's ?). A 4
digit display, although not
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