I am not an experienced builder, but having purchased a ready built K2, I
decided that the experience of building a KPA100 would be good for me. And
everything has gone pretty well until I got to page 41 of the manual and
conducted the tests. Most (J3 lead, Q1 and Q2, and J2) are fine and the
Ron D'Eau Claire wrote:
One BIG factor is whether you are using a balun in the system. I've yet to
find a balun that isn't unpredictable and frequently lossy when used in a
feedline with high reactance, that is any balanced feedline with an SWR much
above 1:1, no matter the type.
For just that
You are absolutely right. 15M is 10K. Reverse the meter leads, and maybe
you'll see the 8M 10K too!
Carry on!
Dan / WG4S / K2 #2456
snip
Granted, 15M is greater than 10K.
/snip
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You must be
Last night, I did the C22 correction using WWV, and
after a couple of tries, it worked like a charm, and
it's very close, if not exact - I'm happy. (yes, I
re-ran CAL PLL, etc., after) Also perfected the
listening to the lowest sounding background noise
method for tweaking the BFOs for my filter
randt wrote on 04/20/05 20:53 ET:
K2-#4877
KC4EYF Here!
I did it,she passed
Alignment and Test, Part 3
Congrats!
Ok,Now i really want to get
down to business with
the 4 mhz oscillator
with wwv or what ever.
Go to http://elecraft.com
- Click Builders' Resources
- Read Frequency
VFO Lock or AGC Off both blink the radix slowly.
Dan / WG4S / K2 #2456
snip
numbers, and before the c. I was reading through the
manual, also operating, trying to find some reference
to that, but didn't, and noticed at some point that it
had disappeared. What was it?
/snip
LLoyd,
The basic K2 power metering is an RF Probe type and is very dependent on the
load - if it is anything other than 50 ohms pure resistance, the K2 power
indication may be in error. Even when driving a 50 ohm non-reactive dummy
load, an in-line wattmeter in the path may introduce some
For some AES (Audio Engineering Society) standards work I am doing
(on EMC), I need to get a handle on the approximate field strengths
used by long wave broadcast stations (150-250 kHz) in Europe and the
UK. Information on transmitter power and antenna details for US
broadcast stations is
--- W3FPR - Don Wilhelm [EMAIL PROTECTED] wrote:
LLoyd,
The basic K2 power metering is an RF Probe type and
is very dependent on the
load - if it is anything other than 50 ohms pure
resistance, the K2 power
indication may be in error. Even when driving a 50
ohm non-reactive dummy
load,
Decisions Decisions. I am getting ready to order the External KAT 100 ATU for
my K2/100. The desired end state may or may not be a K2 with the KPA100 and
KAT100 in a seperate enclosure. However for right now I just want to get the
KAT 100-2. So are there any advantages dis-advantages to
Hi
The KAT100-1 is $239 and includes all of the case pieces you need to build
the tuner. The KAT100-2 only includes the front and rear panels to fit the
EC2. You still need to purchase the EC2 and you will not use the front and
rear panels that come with the EC2. The EC2 is $59 plus the
Well, perhaps I should have kept my mouth shut and
let Eric do the honors. On the other hand he didn't
seem to be keeping it a very close secret at the booth.
It has no vacuum tubes, don't know about SMD. It's
a QRO amp that can be configured in a number of
interesting ways and doesn't require the
~~
N2CQ QRP CONTEST CALENDAR
April 23 - May 23, 2005
~~
Helvetia Contest (CW/SSB) (Swiss) ...QRP Category
Apr 23, 1300z to Apr 24, 1300z
Rules:
I have for sale a Tandem Match Power / SWR meter, (ARRL handbook).
This a very accurate Power / SWR meter that I have build into a K2 project
enclosure.
It fits nicely on top or underneat of the K2. The power ranges are 5, 10,
50,
100, 200 and 500 Watt. The ranges are defined with high
In this piece, found under construction notes on
the E site, it is emphatic about running CAL PLL on
*ALL* bands...but it's only possible to do it on 40M,
so...this ought to be changed, eh?
LL/K2.4442
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Very interesting test and another use for the XG1!
Remember, the fat ladder line may be not canceling the currents, ie is not
as balanced as the more narrow line. Or maybe, the window narrow line is
just the better match to the tuner or it is the routing and the surrounding
influences.
-Stuart
That is a good point, as you do not want the AGC to activate giving a wrong
reading on the comparisons.
If it were possible to disable AGC, you would be able to be sure it is out
of affecting measurements. Also, you should use a step attenuator to make
sure no other circuits are overloaded for
I haven't been around the Elecraft history long enough to know, but I recall
that earlier versions required CAL PLL on all bands while new versions only
require it to be run on 40m. If the AppNote still is useful information but
out of date it should as well be updated to reflect the current
An external 4:1 balun is typically less lossy than the built in 4:1 baluns.
Better still, use the W5YR idea, a bead ferrite choke on the coax output,
then connect there with a coax to binding post adapter for balanced line,
and you eliminate questions about your balun.
An alternate is to use a
It's not a rumor.
Elecraft unveiled their solid-state 800-watt all band (160-10) amp at the
DX convention in Visalia last weekend. Eric told me that another version
of the amp would also be available that doubles up on the finals which
would put out a full 1500 watts. Availability will be later
Stuart K5KVH wrote:
An external 4:1 balun is typically less lossy than the built in 4:1 baluns.
Better still, use the W5YR idea, a bead ferrite choke on the coax output,
then connect there with a coax to binding post adapter for balanced line,
and you eliminate questions about your balun.
For shirt verticals with a low impedance I use a step-up balun, but
again it seems to work better when the X is not the problem, but tehe
R. WB6ZQZ makes a kit.
On Thu, 21 Apr 2005 12:53 pm, Ron D'Eau Claire wrote:
But, if the 4:1 balun is looking into an antenna or feed line with a
high
SWR
W5YR, (sk) used the beads for transition to his balanced line adapter to the
coax connection on his tuner. That is the beauty of the cable choke and
Beads, they are operating on the OUTSIDE of the coax section, and thus the
transformation ratio is taken care of inside the tuner, but RF is blocked
the story as of last saturday morning ;-) was that the amp may include 6m
(yay!) and that the 1500W unit will come out after the 800W is on the
market. (6m would be derated, however, because 6m is about at the limit of
what the finals can do.)
The 800W version has the switching power supply
Elecraft unveiled their solid-state 800-watt all band (160-10) amp
I'm sure the answers will be here soon enough, but in the meantime,
any idea on input/drive levels, and corresponding output levels? I'm
thinking about how it might work with the Elecraft rigs.
--Andrew
Way Ta Go Elecraft...!!
Can't Wait ...to see these..
But...
Will it be a kit for both amps... or will it be a stock built buy
finished from Elecraft
type of deal...??
Andy
[EMAIL PROTECTED] ...I Just See It.!.. John A. Ross
(RSD Communications circa 2004)
A.R.S.
GM0NWI QRP
HAY
Sounda like Heathkit may be returning!!
N2DH
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That's a REALLY OLD piece then... they haven't had you run CAL PLL on all
bands for probably 4-5 years now.
73,
Tom
At 01:56 PM 4/21/05, Lloyd Lachow wrote:
In this piece, found under construction notes on
the E site, it is emphatic about running CAL PLL on
*ALL* bands...but it's only
Hi all-
K2 #4818 here, I'm in Alignment and Test part II
Everything has gone great, my soldering is nice if I do say so myself,
I'm very careful with my parts, but I have an issue with the PLL
Reference Oscillator Range.
My High freq: 12099.03
My Low Freq: 12089.77
My range: 9.26
The book
Hi Everyone-
I'm looking for any thoughts or suggestions from anyone about some recent
VSWR tests I've made on two antennas.
GAP TITAN BACKGROUND: I've had a GAP Titan vertical antenna running with my
K2 (S/N 1599) for several years. The K2 and the GAP have served me very
well (QRP WAS, 28
Paul,
I had the same problem a few weeks ago. You'll need to request a 12uH choke
from Elecraft for L31 and that will solve the problem.
73,
Dave
N7AF
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Steve Said:
MY ISSUE: Even though the HexBeam's 20m VSWR measurements appear quite
normal made
directly at its shack feedline connector using the 259B meter, they are
VERY DIFFERENT when
measured through a Delta-4 switch. The GAP antenna's VSWR's are very
normal-looking when
made through its
I agree with swapping the two switches to see of problem is on both. Is
there any other grounding to the switch chassis?
Other than that, are you using same length coax jumpers, (same jumpers) and
just subbing antennas? I have seen many problems move with jumpers, even
those you think are good
9.8 may be fine, but I have 9.26 (see below) :)
I will check out the What's New section as Dave G3VGR suggested, and
if that doesn't make sense to me I'll contact Elecraft as Dave
Lowenstein suggested.
Thanks all, and any additional comments definitely welcome!
-Paul
On Apr 21, 2005, at
I looked at the HEX BEAM web site to see if anything special about the feed.
Sounds like it is a simple 50 ohm coax connection. However, compact
antennas have intense near field, so if there is coupling back to shack thru
its gain direction you may have a weird case going.
Keep us informed of
can you run a k2 , kpa100 and kat100 from one power supply or do you need two
supplys. the kpa100 will be in a seperate ec2 with the kat100
ron , kcotdj
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Ron McMurray wrote:
can you run a k2 , kpa100 and kat100 from one power supply or do you need two
supplys. the kpa100 will be in a seperate ec2 with the kat100 ron , kcotdj
One power supply will be fine. In fact, it's better because then everything
will be turned on at once, which avoids
I wrote:
Sounds like a very nice solution for
contest expeditions or DX-peditions. 800W
is plenty for most situations.
I just hope it's not $3990. This
one weighs 20 lbs including power supply.
http://www.kunnallislehti.fi/finnfet/esite2.pdf
I would put a balun or choke at the feedpoint of the HexBeam for
starters... sounds like
rf on the shield might be causing problems.
Larry N8LP
Stuart Rohre wrote:
I looked at the HEX BEAM web site to see if anything special about the feed.
Sounds like it is a simple 50 ohm coax
here is an idea for a new elcraft project for all of us hams
a clock dual time clock with big lcd display
one part set to local time the other set to utc time
and make it so that the utc does not change with the saving time but stays
set to utc but the local clock would change
also make the clock
Blasphemy!!
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Earl W Cunningham
Sent: Thursday, April 21, 2005 1:47 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] More rumors?
It's not a rumor.
Elecraft unveiled their solid-state 800-watt all band
What was the price associated with the 800 watt linear? I am sure I
cannot afford it, just curious ;)
Kevin. KD5ONS
It's not a rumor.
Elecraft unveiled their solid-state 800-watt all band (160-10) amp at the
DX convention in Visalia last weekend. Eric told me that another version
of
Great idea. Expanding on that idea, have it so that it is expandable
with weather station accessories that can be interfaced to the computer
to get date/time/WX. Could include a wireless/remote WX sensors for
indoor/outdoor temperature, humidity, barometric pressure, wind speed
and
This sounds like a nice idea. I'd build one.
Kevin.
On Thu, 21 Apr 2005 22:30:03 -0400, [EMAIL PROTECTED] wrote:
Great idea. Expanding on that idea, have it so that it is expandable
with weather station accessories that can be interfaced to the computer
to get date/time/WX. Could
Elecraft unveiled their solid-state 800-watt all band (160-10) amp at the
DX convention in Visalia last weekend. Eric told me that another version
of the amp would also be available that doubles up on the finals which
would put out a full 1500 watts. Availability will be later this year.
Yes, Blasphemy in the eyes of the 'QRP only' folks, but consider that the K2
has grown in respect by leaps and bounds - at first it was considered a 'toy
radio' by some, but it has become noticed by not only the QRP folks, but
also by the QRO, contesting, and DX communities as a superb receiver
Paul;
I designed the temperature stability part of the PLL reference oscillator.
The PLL reference tuning range needs to be a minimum of 9.8 kHz if you want
to operate on 160 meters. A tuning range of 8.8 kHz will not work at 1.8
MHz. If you only want to operate down to 3.5 MHz, a PLL
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