Hello,
If I use memories 0-9 as quick band access, can they still be used as
band edges for scan?
Did anyone get around writing something to dump/restore memory content
under linux ?
Pf
--
Pierfrancesco Caci, ik5pvx
__
Elecraft
Allan,
Build the RF probe that came with the K2 - unless you already have one,
or have a 'scope with good frequency response (100 MHz) and a 10X probe.
Then turn the manual pages to Appendix E and do the Transmit Signal
Tracing section. When you come to any stage in the listed process that
For my education: what is the mark-space ratio to develop optimum even and
odd harmonics? Does this have any merit?
David
G3UNA
And by the way, the XG1 and XG2 also have more or less square-wave
output. This is where the harmonics come from that allow them to put
out a useful signal on
Dave,
I rechecked my log and it was A45XR in Oman - Not Yemen.
Now I'm wondering why my Mental Database thought it was Yemen?
73
Barry K8QI
--
View this message in context:
http://elecraft.365791.n2.nabble.com/KX1-30-80-meter-option-tp6278148p6278967.html
Sent from the Elecraft
A classic comb generator products equal level harmonics.
In the time domain, it is an impulse waveform--in the limit infinitely
narrow. It can be approximated by differentiating a fast rise/fall
square wave with an RC circuit.
If you search comb generator you can find many implementations on
Hi Alan,
Due to visitors arriving tomorrow, I must make this my last post on the
subject we have been discussing.
I believe that this discussion started after Jack had warned that a square
wave source can get you into trouble if used to make 2nd and 3rd
intermodulation measurements, and noted
1. Will the K3EXREF work straight from the output of an Efratom LPRO-101 or
does it need a TTL square wave output or something else requiring extra
circuitry between the LPRO and the K3?
2. If the K3EXREF is installed, will the K3 still work as normal if the
frequency standard is not turned on?
On Sat, Apr 16, 2011 at 12:36 AM, Dave Sergeant d...@davesergeant.comwrote:
On 15 Apr 2011 at 18:59, K8QI wrote:
.Yemen 7O has not been active for years and amateur licences
are currently impossible to get..
Sad but true. But just to show how old I am, I have the (now deleted)
1. Will the K3EXREF work straight from the output of an Efratom LPRO-101
or
does it need a TTL square wave output or something else requiring extra
circuitry between the LPRO and the K3?
A 10 MHz sine wave output from the Efratom is fine (+4 dBm to +16 dBm).
2. If the K3EXREF is installed,
I have a K3/10 and live in a CCR environment. Presently I have a homebrew
dipole (66 feet of stranded copper) in the attic. It works quite well but I
would like to have more reach with CW. I am also concerned about getting RFI
into the neighbor's speakers. I would like to consider a smaller
I would add the Elecraft amplifier designed for the K3 to upgrade to a
K3/100. There aren't a lot of choices for amps that are designed for 10
watts in. You could go with any linear designed for higher power and just
get less out driving with 10 watts.
73 - Mike WA8BXN
On Sat, 16 Apr 2011 07:07:25 -0700 (PDT), you wrote:
The K3EXREF will use either a sine wave input at 4 to 16 dBm (2 to
3.3V), or a TTL signal. The manual advises using a 50 ohm series
resistor for 5V TTL to drop the voltage level into the proper range.
1. Will the K3EXREF work straight from the
Wayne -
You have received some GOOD advice.
What is this 60 Watt temperatrure controlled station.
Forst, the reason I ask is that I have seen many newcomers/novices hood
winked into buying
stations that are NOT True Termperature Control .. but the box and form factor
looks like
This is a great suggestion. Once you have the 100 watt amp that is meant
for the K3, you can always set your power for anything between 10 and 100
watts and you'll use no extra space on the desk, if that matters. It would
in my shack. 73, Lou WA3MIX
- Original Message -
From: Mike
Now I'm just waiting for Elecraft to get the K3EXREF board in production to the
point they are available. I have obtained a Trimble Thunderbolt, a Larsen
marine GPS (read white mushroom) antenna and have ordered a 3 voltage power
supply for the Trimble. Right now I have it running on a pair
The K3 connector is an SMA. Almost all of the Trimble units came with
a splitter, because E911 required two 10 MHz references to function.
Unless you need two sources yourself, I'd go direct from the Tbolt to
the K3 without the splitter, but it really doesn't matter. You'll
have plenty of 10 MHz
I can answer 2, Julian. It is yes. If there is no external 10 MHz signal,
the K3 reference oscillator reverts to its normal operation. An asterisk
(splat, whatever one wants to call it) appears on the LCD when there's an
external signal detected, so you know at a glance whether the K3 is being
I can make or obtain an SMA-SMA cable or if the K3EXREF input is a BNC,
cables are already on hand for that.
The kit includes an SMA panel jack with completed ends. A SMA-to-BNC
between-series adapter is included. I found a piece of RG-316 (RG-174 but
with a Teflon jacket) with a male SMA
Frank and All,
There are some very good small amps out there. Tokyo Hy-Power now offers an
HL-45 that will run about 50 watts or so, and is a very good product. I
have their older version, the HL-50B, and it is a superb product as well.
It is particularly useful with the numerous little QRP
The weekly Elecraft SSB net will meet tomorrow (4/17/11) at 1800z on
14.316 MHz. We tail end the Icom net that ends at 1800z on that
frequency. I will be net control form western Oregon. See you
there.
73,
Phil, NS7P
Ron - Shouldn't the asterisk be blinking if the K3 is being controlled
by and external reference? The presence of an asterisk merely indicates
that it has at some time been controlled by a reference since the last
power-up.
73 de David G4DMP
In a recent message, Ron D'Eau Claire r...@cobi.biz
K9MA: It seems likely we hams have the toughest receiver dynamic range
requirements on the planet.
Good point, Scott. I can, however, think of a few instances where
commercial systems have to perform very well in dense communications
environments. The Mobile Command Centers used by many public
The slow flash of the asterisk changes to a steady asterisk upon loss of the
external reference, and presumably when the external reference falls
reasonably outside of level and frequency tolerances. One can confirm the
operation of K3EXREF by unplugging the precision reference and noting a
That's right David, my memory is failing me today.
If you apply an external reference signal the asterisk will appear.
The asterisk will flash as long as the external source is controlling the
K3's reference oscillator.
If you disconnect the external source the flashing stops but the asterisk
This is correct. The asterisk indicates that at some point, an
external reference was connected and did a REF CAL update. The K3 uses
this value even if you turn the external reference off, on the theory
that it is more accurate than the manually entered value of REF CAL.
If you turn the K3
I did the latest download to get my P3 working. The P3 works now but the
display shows a max of 110 watts where before it showed 120. I know it won’t
probably make any difference to those listening to me. Just wondering if
Elecraft changed the max wattage or if I did somehow ???
checked the archives and i don't see if the XG3 is in stock or is there a
wait period.
not listed yet on the shipping status on the main web site..
just a kid at xmas waiting for mine...
been looking for something like this for a long time...
well done Elecraft...
Ed K7WIA
--
View
Don,
The fan antenna was a lashup in the attic in hopes of having another
antenna, hopefully to use with the K2 upstairs in the office. If it
worked out, great; if not, no big deal. The attic isn't easy to get into
(no pull-down), and not a lot of room to stumble around up there.
The final
I am always amazed how some have so much difficulty making dipole antennas.
With multi-band dipoles (or Fans as it is being called here), tuning
of one dipole interacts with the tuning of other ones. It is not too
bad with harmonically related bands as the non-resonant reactance
isolates the
Hello Robert,
I use a Samson stage mic, but I do use a lot of external audio gear for the
audio, it is a legacy from my home brew days when I used to use a phasing
TX, the audio was so good on that I have retained it on the present rig to
good affect.
As for the PTT, I use a miniature Morse key,
And if you want to save about $50, there are several OCXO on e-bay
for $40-50 (with many offering free shipping). All you do is hook
them to 12vdc and coax to the K3EXREF, as most run at +10 dBm. The
waveform may not be a perfect sine wave.
--and no satellites were harmed in locking your K3!
On 04/16/2011 08:36 AM, G. Beat wrote:
What is this 60 Watt temperatrure controlled station.
Forst, the reason I ask is that I have seen many newcomers/novices hood
winked into buying
stations that are NOT True Termperature Control .. but the box and form
factor looks like one.
I was a beta-tester. The kit I received included a BNC-F/sma-M
adapter. The cable to install has a sma-F connector. So you can go
either direction (BNC MM cable) or a cable with sma-M to BNC-M. I
chose the later (I already had a couple made) because it will present
less mechanical stress
There's no doubt that is a temperature-controlled soldering station. If it
works as well as it looks, you have a winner, Wayne.
The description also makes the other important point for this work: the tip
is grounded to keep sensitive components safe from ESD.
Ron AC7AC
-Original
Hello Folks:
Simple question, when you send the Antenna Selection command (ANn;), I
notice that the K3 does not respond with any status code of whether it
succeeded or not. Is this by design or just a bug?
uC 4.25
d1 2.71
d2 0
fl 1.14
dr 0
I would think it should return the current a status
ANn; is a SET command. To see what the status is, you'd use the
GET version (AN;).
Another possibility is to put the K3 into autoinfo mode by sending
AI2;. After that, anytime you change the antenna selection either by
sending ANn; or by tapping ANT on the rig itself, an ANn; response
On Sat, Apr 16, 2011 at 2:37 PM, Wayne Burdick n...@elecraft.com wrote:
ANn; is a SET command. To see what the status is, you'd use the GET
version (AN;).
Understood but that is a separate command sequence.
Another possibility is to put the K3 into autoinfo mode by sending AI2;.
After that,
K7WIA wrote:
checked the archives and i don't see if the XG3 is in stock or is there a
wait period.
not listed yet on the shipping status on the main web site..
Ordered April 13th and shipped April 15th...patience.
73, Bill
--
View this message in context:
On Sat, Apr 16, 2011 at 2:43 PM, Alexander Sack pisym...@gmail.com wrote:
On Sat, Apr 16, 2011 at 2:37 PM, Wayne Burdick n...@elecraft.com wrote:
ANn; is a SET command. To see what the status is, you'd use the GET
version (AN;).
Understood but that is a separate command sequence.
Another
K3 max transmit was reduced to 110 watts quite a while ago.
On Sat, Apr 16, 2011 at 3:07 PM, Richard rich...@wowway.com wrote:
I did the latest download to get my P3 working. The P3 works now but the
display shows a max of 110 watts where before it showed 120. I know it won’t
probably make
Tnx Bill.
Looks like a stock item...
I should have mine by the end of next week. I ordered late on the
14th
Ed K7WIA
--
View this message in context:
http://elecraft.365791.n2.nabble.com/XG3-shipping-status-tp6279620p6279953.html
Sent from the Elecraft mailing list archive
Please see this picture:
http://yagni.com/ephemera/k2/control_board_booboo.jpg
I've just soldered R18, which is on the back of the K2 control board.
This picture is of the front of the board. Right in the middle of the
picture is one of R18's leads, and encircling that lead, a tilted
Ordered mine on the 14th. Received it today along with the 2 meter phase
lock board.
Palmer
_
From: K7WIA [via Elecraft]
[mailto:ml-node+6279620-639820336-157...@n2.nabble.com]
Sent: Saturday, April 16, 2011 2:15 PM
To: pcbyrne
Subject: XG3 shipping status ?
checked the
I have two K2s (one for casual, one for dress . Both have the serial I/O
unit. One works fine the other not so much. The one with the problem is not
working with Fldigi (using any of the CAT interfaces). No commands appear to
be flowing in either direction. I actually don't know if the serial I/O
Wayne,
It looks like somehow the plated thru-hole was damaged somehow - that is
unusual, but you proved it can happen. From your photo location, It
looks to be R12 instead of R18. R12 is an 820 ohm resistor, R18 is just
a jumper wire.
Looking at Tom Hammond's board images (available for
Sorry, I got the subjects mixed up - ignore the subject line on my
last post, The proper subject is in this post and the text is copied
below. Sorry for the excessive bandwidth and any confusion I caused.
--
Don, Thank you. And thanks also to Alan Price and Bill Coleman for
their help off the list.
You're right that it's R12 and not R18. Good catch.
Both sides of the booboo resistor have continuity to the appropriate
places. On the side with the lifted pad, to P2/10 and P4/10. On the
other
-Original Message-
From: John Cooper
Sent: Saturday, April 16, 2011 8:50 PM
To: d...@w3fpr.com
Subject: Re: [Elecraft] [K2] Control board booboo?
Oh don’t forget to tin your iron tip every time and wipe off the excess
before you solder the component, you want a nice shiny tip that will
Wayne,
For the sake of neatness, you can heat the solder pad and put it down
onto the board, but since all the connections are intact (I could not
see a trace in the image going away from that pad on the top side of the
board), it does not matter - the solder pad on the top of the board is
Casey,
The first thing to do is swap the cables - you may have a wiring problem
with the K2 serial cable.
If the cable is not the problem, tell me if you are dealing with a KIO2
option in a 10 watt K2 or the equivalent in a KPA100 and I can give you
some DC tests to perform.
73,
Don W3FPR
I know this isn't directly elecraft related, but propagation affects
everything -- anyway, it's 10 p.m here and I can hear Hawaii, Vietnam,
Russia, and South America all within a few Khz on 15 meters! Bring back the
good ole days!
Tony KT0NY
--
We don't want every single college grad with
Good Evening,
After three days of snow today turned better. A little sun but still
cold. I have heard that spring has arrived in other areas but it's not
yet here. It did warm up to 52 one day and I heard the local frogs
awaken. Then right back to cold and frost. Luckily my wood
tx don and the rest of you guys and gals thanks a bunch .put the new diodes
in
the atu.bingo works great!!! now getting ready to learn abt the kaf2 clock .
this rec. is one of the best i have ever had . ic7000 new jupiter 538 on the
desk and this is rite in there with them jim kc0dd
So...If I were to tweak the power supply voltage should I use the K3
internal voltmeter or an external one? If an external one, I assume
connected at the DC input to the K3 to compensate for any voltage drop.
Also, should I set the voltage under load/while transmitting? I guess
that would
On 4/16/2011 8:15 PM, Tony Estep wrote:
I know this isn't directly elecraft related, but propagation affects
everything -- anyway, it's 10 p.m here and I can hear Hawaii, Vietnam,
Russia, and South America all within a few Khz on 15 meters! Bring back the
good ole days!
Not so cool out here
Set it under TX full power load at the K3 APP terminals, measured
using an external voltmeter known to be accurate. Just probe into the
APP backshells with the DVM probes.
I use 14.2 at full load. RX voltage is then 14.5V. This provides
some margin for the power supply going bat$#!+. The
Let's try again, now that other threads seem a bit quieter.
And I also have a third question:
I can't find anywhere in the programmer manual how to actually read the
content of the memory slots, is there a direct command to do this at
all or the only option is to issue MV and VM commands and
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