Wayne wrote:
We switch the KPA3 out at lower power levels to optimize the drive,
ensuring a high carrier-to-noise ratio at lower-level stages.
In any case, IMD should be quite respectable on 6 m even with the LPA
by itself.
Understood; but the simple term IMD covers a wide range of issues. It
Thanks for the explanation Joe - that makes sense now and indeed after doing
as you suggest all is 'normal'.
The soft bypass concept isn't what I'd call intuitive so my only
suggestion would be an explanatory footnote to this effect in the manual,
always assuming I haven't missed it
Who
Hi,
Going out onto the Appalachian Trail now. I should be on
the
air between 11:30 and 12:30 UTC depend on where I can find
an operating spot on the AT. There is a lot of thru hikers
making their way up to Maine and I do not want to crowd them
on their trip.
Rig will be the Elecraft K1 @ 5w
Fair enough.
Mike NF4L
Brett Howard wrote:
I'm one of those guys that is a glutton for punishment... To me the
fact that FSK is more complicated and I've not done it before is the
actual advantage. I do see FSK as a method that is slightly less prone
to TX distortions. I built my
Brett Howard wrote:
I do see FSK as a method that is slightly less prone
to TX distortions.
You might be surprised. In my setup I can switch back and forth
instantly between FSK and AFSK. I have done some testing with a second
receiver, and my K3's RTTY signal seems to be cleaner in AFSK
Where did the idea that FSK is more difficult come from?
FSK requires no setting of transmit audio levels or concerns about sound
card settings - for transmission.
To me, this cuts the difficulty in half.
Using a RigExpert or MicroHam (or their equivalent) Interface it's basically
automatic and
For Sale:
Vibroplex Brass Racer (Very Nice) $70.00 + $ 6 dollars SH.
Vibroplex Bug 1940'S Clean, Great Action very Smooth $ 75.00 + $10 SH .
COLLECTORS ITEM : MC ELROY DELUXE MODEL 1938 B Ser# 1026, SMOOTH AS
SILK ACTION, VERY CLEAN 2 Small chips on the T-Bar about 1/8 and 1/16 inch
in
...In my setup I can switch back and forth
instantly between FSK and AFSK. I have done some testing with a second
receiver, and my K3's RTTY signal seems to be cleaner in AFSK than FSK
(lower odd-order sidebands).
The K3 uses continuous-phase switching between the IF (and AF monitor)
I haven't had the time lately to get on the air in the last several months,
but over the last couple of days I had a free hour here and there; I've
received exceptional audio reports. People have told me my sound and signal
are on par with local broadcast stations.
Hope that gives some some
Its not more difficult just more fun cause I got to pull out the screwdriver
and soldering iron. That and it was harder for me cause that method I'd not
used before. I like using fsk and made a few contacts with it last night so
I can now say Ive make both ways work successfully.
~Brett (N7MG)
No argument with what you are saying, Joe, just a curiosity...
The K3ANT does not do a hard bypass. Instead it sets the
tuner to the memorized 50 Ohm : 50 Ohm position.
Since the tuner memories are by band and by antenna - plug
the dummy load into the ANT 1 position, enable the tuner and
Well after a bit, K2 #6952 is alive! Seems I had 1 diode in backwards
which took out the finals. So after several e-mails with Don W3FPR we
located the problem and all is now well. In my defence however,
after I pulled it, the silk screen was a little ragged on the non
banded end, making it
Guy,
I don't know how it works. All I know is that's the procedure
that Elecraft have recommended to others for the same problem
and it appears to work.
73,
... Joe, W4TV
On 6/12/2010 10:41 AM, Guy Olinger K2AV wrote:
No argument with what you are saying, Joe, just a curiosity...
The
Getting ready for the contest. When I transmit on 6 at 92 watts and SWR of
1.7, the power shuts down after 30 seconds of transmitting. Re-transmitt
and it's OK for another 30 seconds. ???
Phil
Philip LaMarche
LaMarche Enterprises, Inc
p...@lamarcheenterprises.com
On Jun 12, 2010, at 6/125:09 AM, Richard Ferch wrote:
Brett Howard wrote:
I do see FSK as a method that is slightly less prone
to TX distortions.
I have done some testing with a second
receiver, and my K3's RTTY signal seems to be cleaner in AFSK than FSK
(lower odd-order sidebands).
What mode? FSK? Is you power supply shutting down and not the K3? What's the
Power supplies rating?
Steve
N4LQ
- Original Message -
From: Phil LaMarche plama...@verizon.net
To: Elecraft@mailman.qth.net
Sent: Saturday, June 12, 2010 12:03 PM
Subject: [Elecraft] Quick question K3
Nobody of us the users has said that the K3 has a bad TX audio,this radio can
sound as well as any other radio in the world,in fact it can sound even better
if you know how to set properly the TX EQ,the mic and comp gain; as you after
been using for more than a year my K3, I keep receiving
Phil,
You can also monitor the power supply
voltage with the K3.
73 Ken K5DNL
---
--- On Sat, 6/12/10, Phil LaMarche plama...@verizon.net wrote:
From: Phil LaMarche plama...@verizon.net
Subject: [Elecraft] Quick question K3
To:
Phil,
You might try it into a dummy load.
73 Ken K5DNL
---
--- On Sat, 6/12/10, Phil LaMarche plama...@verizon.net wrote:
From: Phil LaMarche plama...@verizon.net
Subject: [Elecraft] Quick question K3
To:
Let me word my request differently. The only thing that shuts down is the
wattage. Goes from 95 to 0 after 30 seconds of transmitting. Re key and it
does the same thing. SSB. Sorry for the confusion. SWR 1.7:1.
Philip LaMarche
LaMarche Enterprises, Inc
p...@lamarcheenterprises.com
I'm looking for any ideas for a source to mount the K2 or K3 in the Ford F250
PU in the middle on the transmission hump.
Ideally, a non-intrusive (to the radio housing) bracket arrangement to hold the
radio so it can sit behind the shift up against the front seat at a slight
angle. Without
Hello,
I arrived at my operating location north of Strausstown, PA
where the Appalachian Trail and Rte.183 intersect. During my
short hike into the area I found a box turtle on the trail.
I took a couple of pictures and started to hike on the
trail. I bumped into a Thru hiker doing the
So in effect, you're loosing your modulation as if the mic. came loose.
Can you get a carrier when keying or is it just SSB that's acting up?
Steve
N4LQ
- Original Message -
From: Phil LaMarche plama...@verizon.net
To: Elecraft@mailman.qth.net
Sent: Saturday, June 12, 2010 12:52 PM
Did a further test. shuts down at 50 and 95 watts but not at 30 watts.
Phil
Philip LaMarche
LaMarche Enterprises, Inc
p...@lamarcheenterprises.com
www.LaMarcheEnterprises.com http://www.lamarcheenterprises.com/
727-944-3226
727-937-8834 Fax
727-510-5038 Cell
www.w9dvm.com
Phil,
Did you try the dummy load ???
73 Ken K5DNL
-
--- On Sat, 6/12/10, Phil LaMarche plama...@verizon.net wrote:
From: Phil LaMarche plama...@verizon.net
Subject: [Elecraft] K3 Problem
To: Elecraft@mailman.qth.net
Date:
Chen,
Very interesting. Thanks for your link.
Have you looked at the waveform with the AFSK TX Filter turned on?
Rick
K6LE
On 6/12/2010, at 9:09 , Kok Chen wrote:
On Jun 12, 2010, at 6/125:09 AM, Richard Ferch wrote:
Brett Howard wrote:
I do see FSK as a method that is slightly less
Hello All
Just discovered a strange thing last night. As I switched from 80 CW, to 160m
using the same RX antenna, there was no receiption on TB. If I switch from TX
antenna 1 to 2, and hit RX antenna it is working. Why is the RX antenna only
working when antenna 2 selected? This happens only
John,
Try velcro - it works for a lot of tough mounting situations.
Velcro strap - the kind that sticks the two sides togetheer might be
handy too.
73,
Don W3FPR
John Lawrence wrote:
I'm looking for any ideas for a source to mount the K2 or K3 in the Ford F250
PU in the middle on the
Tap DISP, then turn VFO B until you get the display with A to the
side. What kind of current are you pulling with 92 watts into 1.7 SWR
when it shuts off? Also turn VFO B until PA shows on the display,
what temperature are you getting when it shuts off?
73, Guy.
On Sat, Jun 12, 2010 at 12:03
David,
I just thought of something else - the KPA100 may be oscillating on
you. That fact will not show up on a dummy load, but because an antenna
is frequency selective, it will indicate Hi-refl. The KPA100 *should*
detect that condition and reduce the power, but for some reason yours is
Guys,
Someone on the fora pointed out that we all have different 49 MHz
oscillators!
I guess that many K3 owners *have bought oscillators delivered without input
for the voltage control* not knowing that a future locking to an external
reference would *not* be possible.
The KTCXO3-1 delivered
Not more difficult, just more equipment involved (and $$) unless
you're doing it all from the K3, not using any external interface.
73, Mike NF4L
Bob Naumann wrote:
Where did the idea that FSK is more difficult come from?
FSK requires no setting of transmit audio levels or concerns about
Hi all,
I will be running the UK Elecraft SSB net on 3658 +/- QRM tomorrow morning
at 09:00 BST as usual. I hope to hear you there.
73 Ian
--
Ian J Maude, G0VGS
SysOp GB7MBC HB9DRV-9 DX Clusters
Member RSGB, GQRP 9838, FISTS 14077 | K3 #455
http://www.amateurradiotraining.org
I have built more than 300 K2's and many of the other Elecraft kits. Let me
build one for you. You will receive a new radio with the options you want. My
prices are reasonable. Please respond off of the reflector.
73
Alan
W1HYV
I built and installed the KIO2 about 6 or 7 years ago, successfully used it
in one contest and then entered a period of relative inactivity where the
KIO2 was not used.
During the recent CQ WPX, I realized that my old KIO2 - computer serial
cable was relatively useless to me now because my
I've got some local noise around here that sounds like a water heater or sorts
or something along that line. Anyway it's really giving me fits on 6 meters.
I ahve to run the NB almost all the time and that distorts the signals and
sometimes it doesn't even clean up the noise. Doesn't matter
I have just changed out the KIO3A main I/O board on my new K3 - an
expensive lesson in lightning-induced EMP damage, I guess. Too bad it
wasn't the digital I/O daughter board, which is cheap by comparison.
Would there be any point in sending the $106 board back to Elecraft for
diagnosis and
Ed,
Sorry to be the bearer of bad news, but you should *not* have plugged
that or any other USB to serial cable directly into the K2.
You connected RS-232 level signal to pins on the K2 AUX I/O that are not
intended to have RS-232 levels applied. Only pins 2 and 3 can handle
the RS-232
DFing the problem is probably your best bet. I had to do that with a
S9+30 noise source on freqs lower than 10 MHz. It was an unused
irrigation transformer with open leads (arcing). It was almost
1/2-mile from the shack. Crud like this carries a long distance.
Your local electrical utility
Hi Larry,
I assume you've tried playing with different settings of both the IF
and DSP noise blankers. If not, by all means try it and use the least
aggressive settings that make the situation tolerable.
I'm not sure how the DSP NB works, but the IF NB works by essentially
shutting off
Would someone please furnish definitions of these two terms, and
explain the difference between them--if there really is a difference.
Sent from my iPhone
__
Elecraft mailing list
Home:
Mixing is a general term for combining any two or more signals through
the process of heterodyning.
Intermod is a specific form of mixing which combines harmonic products
of two RF signals: the desired receive signal and an undesired,
accidental signal, yielding a series of harmonically
Regarding Intermod, I misspoke when stating that there was a harmonic
relationship. I meant to say a relationship between the sum and
difference frequencies that yield products up and down the band spaced
these difference frequencies.
Sorry,
Dick
Mixing is a general term for combining any
So, what is the better way to go. There is the internal KXAT1 auto-tuner for
$99 and then there is the external T1 auto-tuner for $136.
Are these the same or equivalent tuners?
What is the SWR range for these? 10:1, 5:1, or 3:1 or whatever?
Is there an advantage to the KXAT1 other then the
For Sale, K2 #0219. 10W model. Has almost all the available updates
except the K2 Keying Bandwidth Mod, which requires FW 2.04, radio has
2.02f. Includes: KAF2, KNB2, KIO2, KAT2, KSB2, K160RX, setup with fixed
audio out on mic jack for digital modes. Power jack replaced with cable
with
Wayne,
Thanks. So, is tossing the wire in the tree part of the tuning process? :-)
phil
On Jun 12, 2010, at 8:15 PM, Wayne Burdick wrote:
Hi Phil,
The T1 has a wider matching range. The internal tuner is optimized for 40-20
m and a wire tossed in a tree.
73,
Wayne
N6KR
Phil,
The T1 tuner has a greater tuning range than the KXAT1. One cannot just
simply say that a tuner will match a specific SWR - the characteristics
of that particular SWR must be expressed in terms of resistance and
reactance to totally answer your question.
Look at the maximum L and
Thank you Dick. Nicely done.
Sent from my iPhone
On Jun 12, 2010, at 21:30, Dick Roth, KA1OZ raro...@comcast.net
wrote:
Regarding Intermod, I misspoke when stating that there was a
harmonic relationship. I meant to say a relationship between the
sum and difference frequencies that
Good Evening,
We had a new season today. The temperature zoomed to 74 degrees with a
bright sun. I worked behind the house until the heat pushed me to the front
yard. However, I got most of the weed whacking and tree trimming done before
then. I was going to get on the roof and repair an
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