On Apr 19, 2006, at 12:53 PM, Leigh L Klotz, Jr. wrote:
Doesn't the K1 swap the meaning of R and R- on the upper and lower
bands, or am I confabulating again?
Not exactly. R and R- are always consistent, but the K2 LO sense is
inverted on 15-10m. This means that the opposite sideband is
Hi Guys
Been there, done that... My boat anchor external receiver project will
do that... Even with a receiver that's not a boat anchor. As I tap into
the K2's receiver after the low pass TX filter (on J13), listening on
other bands than the K2 is tuned to, is a bit variable and non existent
John,
Thanks for the suggestions. I can now report back to the list what I have
found. Gary Surrency and Don Wilhelm have been helping me on the side and
here is what the problem is.
LIGHTNIHG. Yep, I took a hit. I started pulling the various module boards
one at a time until I found that
Hi List,
I soldered faster than I read. So Q1 is now installed in a common fashion
without teflon spacer. Leads are clipped. What am I going to do now?
If the teflon is just for spacing I would remove the Q, prolong the leads
and install it without the teflon but spaced (I think the teflon
Hi
You can see my version at
http://uk.geocities.com/[EMAIL PROTECTED]/
I am currently re engineering this set up to improve frequency swopping
etc. Stewart G3RXQ has a surface mount version of the diode switch which
is FAR superior to my discrete version.
But works OK and as others have
Bob and all,
Just one observation since someone mentioned cross-band operation. With
this scheme, the Low Pass filters of 'K2T' are attached to the antenna, the
2nd receiver would ideally be tuned to a band lower in frequency than the
transmitting K2 - tuning the 2nd receiver to a higher band
Yes that's right Don but in my experience that's not been a hindrance.
I will say that using a second RX with an inferior performance to the
main K2 encouraged me to build the second K2 !!
73 Bob G3PJT
Don Wilhelm wrote:
Bob and all,
Just one observation since someone mentioned cross-band
I have been thoroughly enjoying listening to 40M after Alignment
PartII. I do notice that there is a frequency shift of about 700 Hz
or so when switching from XFIL 2.20 to XFIL 2.0. Shifting to the
next two XFIL, the audio is same as 2.20. So the only XFIL shift in
audio is on XFIL 2,0.
John:
If you have an old K2 main MCU try it and see if it fixes your KIO2 problem
before you order parts. My K2 was subject to lightning (not as direct hit
but in the neighbors yard) and the only symptom was that the KIO2 would not
work. After determining the input port on the PC was shot
For sale: KDSP2,$200, insured and shipped to your ham shack, stateside,
otherwise actual shipping cost. Please contact me off list at: bsce74 at
centurytel dot net. Also have a Timewave DSP-9, with original box and
manual, same routine for $75.
Thanks for the read.73, Roger, WA7BOC K2 #755
I soldered faster than I read. So Q1 is now installed in a common fashion
without teflon spacer. Leads are clipped. What am I going to do now?
If the teflon is just for spacing I would remove the Q, prolong the leads
and install it without the teflon but spaced (I think the teflon won't fit
I finished the mods to the board and went through the receiver alignment on 20
and 40 to discover that although I was getting some signal, it was way way down
from before.
After reviewing the email thread on the other deaf KX1, I checked the
resistance to ground from both sides of L6 and found
I just finished the basic K2 and am going through the alignment. The receive
alignment went well. I then built the transmitter part and am trying to do the
40 meter transmitter alignment. It says to set power to 2.0 watts. I move the
power control and the LCD shows 2.0 watts but when I hit
On Apr 19, 2006, at 12:22 AM, wayne burdick wrote:
Yup. Me too: G5.
I only use the PC when I have to write firmware or run hardware
modeling software.
Get one of those newfangled Intel-based Macs and you can use Boot
Camp to run that dark side software on occasion
Might save some
On Apr 22, 2006, at 11:33 AM, Bill Coleman wrote:
On Apr 19, 2006, at 12:22 AM, wayne burdick wrote:
Yup. Me too: G5.
I only use the PC when I have to write firmware or run hardware
modeling software.
Get one of those newfangled Intel-based Macs and you can use Boot
Camp to run that
On Apr 20, 2006, at 8:27 AM, Don Wilhelm wrote:
There is no 8T hold menu parameter - the 8R signal goes low 15 to
20 ms
prior to the onset of RF.
One question on this -- how does this work for SSB? Is there a
15-20ms delay circuit that allows the VOX to key before the RF makes
its way
On Apr 17, 2006, at 11:31 PM, Tom Hammond wrote:
If the shapes of the LSB and USB filters are NOT opposite of each
other, the implication is that BOTH are on the SAME SIDEBAND,
rather than being on OPPOSITE sidebands.
This occurred to me, but since the BFO frequencies he listed seemed
Mike N2HTT wrote:
T2 sits right on top of one on the ends of L6. I lifted T2 off the board
slightly so there was no contact, and checked the resistance again - it was
good. About 1000 ohms with R1 in the minimum position, and 1.5 - 2.5 ohms at
the max, as Ron decribed in the prior email.
On Apr 18, 2006, at 10:33 PM, Sandy W5TVW wrote:
Why get sloppy and why some guys trying
to run their keyers at 40 WPM?
I never send that fast, because I can't copy that fast. But, I have
been known to run CW as high as 32 wpm. I do know guys that can go a
LOT faster.
Why send your
On Apr 18, 2006, at 10:51 PM, Sandy W5TVW wrote:
If you are a DXer, how many times have you succeeded
with only a 'single' call in a big pileup? You may have to send
your call
a bunch of times,and/or be running a bunch of power.
I NEVER do this. I send my call once and then listen. I may
About 3 years ago I built KX-1 #608 with KB-30 and KXAT1. I've had tons of fun
with operating it in my travels at relatives' homes, hotels, resorts and
campgrounds. Usually I use the simple 24 ft wire recommended in the KXAT-1
manual, supported on whatever I can get, with three ground radials
On Wednesday 19 April 2006 00:22, wayne burdick wrote:
I only use the PC when I have to write firmware or run hardware
modeling software.
I use a free 68HC908 assembler and a programme
I wrote in C for FreeBSD and gnu/linux to programme
the chips because I hate to do software development
on
Bill,
My opinion is showing, but VOX will clip leading syllables no matter what -
and that goes for any transceiver. It may or may not be important - not
much intelligibility will be lost in most instances, but the use of VOX
leads to operating practices on SSB that contain phrases like: Ahhh -
Something else I thought about was boots for the KX1. 20W or so would
make it handy as a slightly more potent, holiday, restricted bands, mini
rig. It would still be a pretty compact combo.
I bought Virgil K5OOR's HFpacker amp - 35W out. Haven't built it up yet,
but I bought it exactly
I have been pulling my hair out for about a month with this problem, and
perhaps someone has seen it before and can point me on the right path.
I have an issue on 30m receive only. When I transmit on 30m I get full
power, and it receives normal, but after a while it loses most of its
It would help if I said what radio it is. A K2.
Joe N9JR
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Joseph Reed wrote:
I have an issue on 30m receive only. When I transmit on 30m I get
full power, and it receives normal, but after a while it loses most
of its sensitivity. Transmit again and it will hear the other side
of the earth. I have noticed that once it goes partially deaf I can
get
Just how much time does sending a DE or a K take?
Not much, but NOT sending them takes less time
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
Bill and others:
Thanks Vic,
But its not the antenna or coax. I had already tested it, besides being a
multiband vertical it shouldn't happen on only one band. According to the 259B
my SWR is 1.2:1, and brand new coax from the antenna to the switch.
Thanks for taking time to give me your advice,
Must be the Saturday doledrums - I said LPF when I mean BPF and vice versa.
Sorry for the confusion.
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Joe,
Try checking the RF voltage out of the VCO (at TP1) - compare 30 meters to
40 and 20. If the 30 meter output is low, that could be the major cause of
your problem. If this is the situation, look first at the voltage at R30
for clues. Normally the 30 meter VCO alignment falls quite within
Why even send the call of the station you are calling, especially if it is a
contest? He knows his(her) call. And in contesting why send QRP, unless the
contest requires it? It just slows things up. The person on the receiving
end is going to pick out the loudest and shortest call first. Also
Thanks Don,
I'll move the probe to TP1 and see if it changes when receiver sensitivity
falls off.
I thought that if VCO voltage was low PLL lock would be lost. When this
happens, the PLL stays locked, as verified by listening to stronger stations.
Also the VCO/PLL chain is before
I've gotten to Alignment Test, Part II RF Board
build on my K2 # 5422.
I seem to be having problems with VCO Alignment
problems:
a. 4 Mhz Oscillator Calibration = gave a reading of
12099.35 - OK it appears.
b. PLL Reference Oscillator Range = 12099.32 high, to
12085.65 low - Range = 13.67khz -
Joe,
Not the counter probe - use an RF Probe or a 'scope - the significant factor
is the RF voltage, the counter probe will only provide the frequency and I
expect that will be correct.
What you may be encountering is low injection to the mixer - the level
should be +7dBm for the TUF-1 mixer -
I have the same problem on one of my 40M dipoles, hears good for a while
and then the signals go way down. One tap of the key and receive is
restored. I know the problem is at the remote coax switch, most likely some
corrosion at the coax connector. I've had the problem in the past with
Fred,
If you attempted to change bands by moving the VFO knob, you may have the
bands quite skewed. I would first try doing a 'Direct Frequency Entry' on
each band (see K2 manual page 92) to get things straightened out again.
Then afterward, use the BAND+ and BAND- buttons to change bands.
Yes,
Dude,
You are indeed the King. Let me press forward with your suggestions. I'll
let you know what I find.
Joe N9JR
Don Wilhelm [EMAIL PROTECTED] wrote:
Joe,
Not the counter probe - use an RF Probe or a 'scope - the significant factor
is the RF voltage, the counter probe will
Hi folks,
I want to take a stab at a homebrew remote control
application for the K2. Can anyone point me at a
source that describes the K2 RS-232 command
set/responses/etc? I understand it's related to the
Kenwood rs-232 but I still haven't had much luck
tracking it down. Any help would be
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
Hi all,
I have pondering how to set myself and my K2 up for RTTY for quite a while.
I have had some previous failures even trying to read some RTTY signals. I
finally figured MixW out enough to starting reading some RTTY signals on the
screen tonight, and decided it was time to set up the K2's
Steve,
It is easier than trying to compare it with the Kenwood command set - just
go to www.elecraft.com and click on 'Manuals and Downloads' - near the
bottom you will find the K2/KIO2 Programmer's Reference - download that and
it will tell you more than you wanted to know about the K2 KIO2
N2TK, Tony wrote:
Why even send the call of the station you are calling, especially
if it is a contest? He knows his(her) call.
Months ago, I started the thread in the subject line, it got beat to
death, and I'm surprised it got resurrected. I'm not surprised, however
at how it has morphed.
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
The KDSP2 has been sold, Thanks! The Timewave DS-9 is still available.
73, Roger WA7BOC
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Good Evening,
My eyelids are growing very heavy, I am getting sleepy, I am just about
to hypnotize myself via email :) But, before I fall into bed I'd like you
all to know about the two nets tomorrow. Maybe the sun will provide us
with good propagation. I have no idea how it's been
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