I've got a K3/10 with a KXV3 on order. I have a vintage military amp that
only needs 100 to 150mW of drive.
I've studied the RX antenna options provided with the K3 and KXV3 but still
have questions:
Can I reliably set the output power at the 100mW level (band-to-band) ?
Ideally I would
but.. the K3 is a no solder kit! Sorry...
I converted my shack and a couple op positions at our club shack to APP's -
soldered dozens of them, works great.
One tip: make sure of the orientation of the connector pins before
soldering especially on heavy gauge wire. This can be a bit
KRQ2 said:
As I recall, TT also basically told their customers that, This is not
a design flaw, this is how it is supposed to work. And further, even
argued back about what was and what was not necessary for their
customer's satisfaction.
Of course, my being a lurker as opposed to an Orion
This was an issue with the early Orion also. As I understand it, PTT in CW was
eventually implemented on the Orion.
Some of the contesting software will raise PTT and delay a user specified time
before keying to let the T/R switching settle. Also, on all the YaeCOMWood
rigs I have used,
I'm at the second set of resistance checks on the RF board (page 62). All look
OK except U10 pin 8, the 8T line. It is over 1M ohm... Clearly that's 500
ohms, but looks like I have an open somewhere. The 8R line is 2.5K.
I've eyeballed all the components on the 8T line / solder joints,
Just did a quick scan of the K3 assembly manual - wonder how many downloads
so far..?? !! The following will likely apply to the K3 also - I'll find
out next year for sure.
I'm at the end of day one of assembling my second K2, just finished the
Control Board. Used my trusty (old) auto
bankrupted the company before they could finish and ship their PC-
compatible design.
Of course, the wikipedia entry indicates that perhaps the role of the
pre-announcement was overstated: http://en.wikipedia.org/wiki/
Osborne_effect
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED
the AppleSoft BASIC license
renewal to extort a license to the Macintosh UI elements? This
agreement basically allowed Microsoft to rip off any part of the
Macintosh design for Windows 3.1.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man
On Jul 13, 2007, at 9:14 PM, Gary Montalbine wrote:
Switch to OpenOffice. Its free and works.
I'm really hoping the next version of iWork includes a spreadsheet
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
messages and responded before reaching
the end of thread message.
If that is any explanation.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
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On Jul 9, 2007, at 2:59 AM, David Woolley wrote:
Bill Coleman wrote:
What you'd end up with for the receiver would be a Mixer and
clean DDS, followed by a high-speed, wide-range A/D converter.
Everything else
I don't understand why you write about such things as in the
future
that, but with the Elecraft
K2/100, I've come close. (I didn't design it, but I certainly built it)
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Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
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On Jul 9, 2007, at 12:52 PM, Gregg W6IZT wrote:
I was hoping that the tuning rate could be set by mode?
That's a standing firmware request!
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
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of the K3.
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transistors and the
tube finals in rigs have long been gone. So, is this just a
natural evolution of amplifiers or is some new technological
breakthrough happened in high powered solid state amplifiers?
Looks like just the continuing evolution of electronics.
Bill Coleman, AA4LR, PP-ASELMail
this
advantage.
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price point.
I want a whole boatload of demodulators there in the K3's DSP with
access coming out to me in some convenient fashion -- like on an
ethernet connector.
Sounds like what you really want is something more like the 1995 pipe
dream.
Bill Coleman, AA4LR, PP-ASELMail
ways, but the K2 does
hold its own.
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You
preferred to hear
the monitor. During the course of the contest, I kept turning the
monitor down and down. By about the sixth hour of the contest, I had
it all the way off. He was right.
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Quote: Not within a thousand years will man ever
to be of critical importance.
Similarly, if you are at a M/M station on the second rig on a band,
ultimate rejection is key, as there is another 1.5 kW signal within a
handful of meters of your receive antenna.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within
be
licensed.
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just buy a K3! I also work a lot of QRP CW.
The 100 watt amp can be deactivated just by turning the power knob
down. The K2/100 is still a great radio. The KAP100 is only what
$389? A K3/100 is more than four times as much.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote
important.
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that is mounted under a small
oak tree. It works very well on 80m, to a lessor extent on 40m and 160m.
If you have a shrub or tree that can support a wire 10 feet or so
high, then you should be able to configure a K9AY loop.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote
. Even though you might
only use the LSB sideband for RTTY, remember the sidebands are
swapped on 15m and above due to the inversion.
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Quote: Not within a thousand years will man ever fly!
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.
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.
In the business literature, this is known as the Osbourne Effect
for this reason.
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something, so you'll stop sending -- and
the signal disappears. Kinda defeats the purpose of all that big
dynamic range
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-- Wilbur Wright, 1901
for a $600 box.
Good score!
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You must
a serial port pin (DTR)
when it is time to key the transmitter. Works great with Cocoamodem.
I've also used the K2 with MMTTY and N1MM software. N1MM is
interesting that it can key the transmitter with a serial port
command (not just DTR), and that seems to work pretty well, too.
Bill Coleman
in noise
S1 -- I know you're there, but too weak to get more than occasional
letters.
This is exactly what I do! My S5 is a bit higher, but, yeah, if
there's any indication on the S-meter, you are S5, easy.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within
that
is required is for the second receiver to be able to receive (likely
on a different band) while the transmitter is transmitting.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
the dynamic
range of the signals after the AGC of the IF stage is pretty limited,
the NE602 is a pretty good choice. It wouldn't be easy to do better,
especially at the price point for the K2.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever
want to come in through the AUXBUS. Since the protocol isn't
published, it really has to come from Elecraft.
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Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
happens to
your antenna, you might not notice, especially if you have more than
one antenna on each port and you press the Tune button after
switching bands. The rig will be happy even if the antenna is partly
busted.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote
and put
the Tx frequency in VFO B. I can just hold REV and hear my Tx frequency.
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the
KRC2 because it is just the buttons. (Might also be useful for the K3)
4) Remote Tuning Knob -- borrow the idea from Ten-Tec. Perhaps part
of PFx module.
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Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright
stability mods all seem
significant to me.
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(although
it should have made that process easier).
So, the answer your last question -- they'll be available when the
certification is complete. When that actually occurs is anyone's guess.
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,
you might as well go to the OP1 filter.
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transmitter was a homebrew 6CL6 Osc / 6146
PA crystal-controlled rig. What fun!
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between the transistors. With this, I can
run 50 watts without problems.
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on the KAT100.
Dropping power to 70W seems to prevent it.
Are you sure your antenna system isn't arcing? If you have an SWR
shift under power, that's usually a good sign of an arc.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
remember being surprised at how quickly it went
together, and that it worked perfectly the first time.
Also, wondering about the KDSP2 (looks quick) and KNB2 (also looks
quick).
A couple of hours each.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years
like a feature that could be accomplished with a
simple firmware change. Perhaps its a possibility for a future
upgrade.
Of course, Elecraft has those pesky amplifiers they'd like to ship
first
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand
only run about 25-30 watts out in a
contest. I've added an external fan for cooling, and have
successfully run 50 watts out for long periods. (You can use the full
100 watts, but only briefly, as the amplifier heat sink will heat up
very rapidly)
Bill Coleman, AA4LR, PP-ASELMail
their last state and stay there even
if no power is supplied.
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on my PowerBook G4 12 laptop.
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You must
test the KPA-100
assuming no major flaws introduced by the builder (= myself)?
My experience was that the amplifier went together and just worked
with no troubleshooting. If you can build the K2, you can easily
build the KPA-100.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED
)
So, if tubes aren't involved, the WinKey should work fine with most
any rig.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
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problem.
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plane for the
minature 160M vertical ummm I've said too much
already
The designs for this aircraft carrier had miles of tubing running all
through the ship, in order to refrigerate the structure and keep it
frozen.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote
the K2 and found drops of condensation.
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You must
choice with the connector, and it is up
to us to realize that it is not standard RS-232 and just deal with
it. Of course, few, if any, other ham rigs have standard RS-232
connectors on their rear apron...
Indeed.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within
home improvement stores.
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You must
. But, during Field Day, you're not likely to
find many ops at 5 wpm.
The best thing to do in this case is to call CQ at the speed you wish
to receive, and hope someone calls at your speed.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man
will be able to use the majority of the CW
bands on 80, 40 and 15m, just like it was in the old-old days before
incentive licensing.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
with a
keyboard. It was funny to listen to him close the net at 5 wpm, then
crank it up to 40 wpm a minute later.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
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a half an hour, it returned to
normal operation.
The problem appears to be internal condensation building up in the
K2. Is anyone else encountering this problem? What can be done about it?
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years
given was by the late W4AN. He said that the
best way to improve your CW speed is to get on the air and make
contacts every day. It took me years before I heeded that advice, and
I still don't make one every day.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within
or the KRC2.
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correct.
BTW, I don't use OP1 for the FL1 on my K2. I use the variable-
bandpass filter set to 1.0 kHz. My filters are 1.0, 0.4, 0.16 and
then OP1. I rarely use the 0.16 or the OP1.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
going to
strip it down and build a MOPA transmitter using a 6CL6 and 6146 tube
for 30 and 40m. After that works, I'm intend to build a little solid-
state receiver with an NE602/crystal filter/MC1350/NE602 receiver
chain, not unlike some of Wayne's earlier designs.
Bill Coleman, AA4LR, PP-ASEL
this for years! Beware that you have eye protection,
and be careful if you are wearing shorts, as the little globs of hot
solder can leap a considerable distance.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
an indelible legacy on amateur radio
even though they stopped producing kits in 1986. Elecraft has picked
up and continued that legacy of quality electronic kits.
(there, I brought it around to relevance for you)
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand
normal fare for the K2 or does it sound
like an
issue?
I didn't have this problem with my K2 this weekend, but I may not
have tuned across the same signals you did.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
-4x the current size. I don't think that's as big as
18x10 inches.
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what
happens
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use 500 or even 700 hz filters when
running and let their brain be the final filter.
This weekend I kept my K2/100 on the 400 Hz filter, and cranked in
the DSP filter of the same bandwidth, too. Much easier to find a
clear frequency to CQ on that way. grin
Bill Coleman, AA4LR, PP-ASEL
directly access the filter setting we want.
Some form of dedicated AGC selector
Again, I'm not sold on the rotary switch. You just need more buttons.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
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of portable
receivers -- how many radios follow the same form factor of of the
Zenith Trans-Oceanic?
So, this begs this question -- what's the right aspect ratios for a
desktop rig?
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
of the buttons on
the right side are set to send messages instead of their labelled
function.
FPLY is usually activated via either PF1 or PF2, depending on how you
have your K2 configured.
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Quote: Not within a thousand years will man ever fly
, which is arguably one of its strengths.
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You must
filter because the main filter IS the front-end roofing filter.
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.
There are lots of DX bulletins, most of which you have to pay for.
Perhaps the most up-to-date source is the DX packetcluster (although
most people access it through the internet these days).
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years
the KPA100 and mount it in an EC2 case.
There's your external amplifier.
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shortcomings, yes. I still have my
Ts-430S (20 years old now), but may replace it with a second K2 here
in a few years.
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Quote: Not within a thousand years will man ever fly!
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.
The KAT100 doesn't do this? All you need to add is a dummy load.
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, the K2/100 wins, hands down.
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You must
guys are
around 60 wpm.
With the regulation by bandwidth, does this now put a speed limit
on cw?
Potentially, but that limit is so high as to be practically no limit.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
capitulation and my return to Windoze to run ham radio
digital programs.
I can use the same interface to hook up a Windoze laptop, too.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
, but I'm back down below 24
for conversational CW.
Really good high speed telegraphers are rather
scarce. (I'm speaking of those using straight keys or bugs, or
sideswiper keys).
That's pretty much a dead art.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within
faster QSK performance from your K2. It's on
the Elecraft site, or look in LA3ZA's mod site.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
novel than simple band pass or low
pass and would really set DSP apart from the tried and true crystal
filters.
Of course, another thing we could do is to use modulation techniques
other than CW (OOK) that are easier to digitally detect. (eg FSK,
multi-FSK, PSK, etc)
Bill Coleman, AA4LR, PP
filter, as
designed by KI6WX. This is similar to the original K2 SSB filter -
about 2.0 kHz wide, but the caps have been modified to give a
bandpass with less ripple.
Oh, and I leave the automatic notch filter on in SSB all the time.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL
can run
50 watts or so.
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You must
is used to
reverse the inversion.
So, the filter shape you see using R on 40m will be R- on 15m and
vice versa, but the actual sideband you receive will always be LSB
and USB, respectively.
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Quote: Not within a thousand years will man
desk space
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out, or does the K2 simply clip 15ms or so of audio before it
is transmitting?
I can see how this works for CW, since the K2 can delay the keying
waveform by 15ms. How about SSB?
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
. If both sets of values (DAC _or_ FREQ) are
on the SAME side of the filter center frequency, then they're both
on the same sideband, though possibly not on the same exact frequency.
Yup. Made that mistake once myself.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within
a QRP contest! Won't people
EVER learn?
Not everyone runs QRP in contests. And not every QRP signal is down
in the noise.
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
and call, even when the DX has
long since come back to someone else. Really poor operating practice.
However, contests, by and large, do not resemble DX pileup operation.
Contest pileups share some characteristics with DX pileups, but they
aren't the same.
Bill Coleman, AA4LR, PP-ASEL
low to show much of a pattern (I do see a 2 S-unit (12
dB) null off the ends), but it works better than anything else I've
put up.
The shunt-fed tower is only 1/10 wavelength long on 160m, but I've
gotten 43 states confirmed and 10 countries using 100 watts, mostly
in the last year.
Bill
. I'm
currently considering adding a small pre-amp circuit and going back
to the 1 k resistor for R14.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
get quite
enough range. A 2 pf cap across one end of the crystal to ground
fixed that. This mod is documented in the archives.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
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at the 20 watts or so of
the auto-tuner of the K2/100, but show up with 50 or more watts.
Intermittent problems of this sort are difficult to track down.
Inspect everything.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
, and
even convenient for the user.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
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You must
it. Well, what does
everyone say. Go for it or not?
Thanks for the help and bandwidth.
Wait until you want to make a mod or some other change. Enjoy it in
the meantime.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly
, Province or
Country.
Bill Coleman, AA4LR, PP-ASELMail: [EMAIL PROTECTED]
Quote: Not within a thousand years will man ever fly!
-- Wilbur Wright, 1901
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