[Elecraft] Panadapter Display

[David Robertson]

I sent a message concerning the speed of the Panadepter display speed on
the K4. well I found the adjustment. under Display/ Average. I am now all
set. some day I will learn how to operate this radio.
73 Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

[Elecraft] Sorry My Mistake, Factory Reset for my K4

[David Robertson]

How do I do a Factory reset for my K4
73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

[Elecraft] Factory Reset for my K2

[David Robertson]

How do you do a factory reset on my K4??
73 Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

[Elecraft] K4 LCD Display

[David Robertson]

My new Elecraft K4 ( Serial NO. 1073 ) has developed a LCD problem.
I think the error is from my setup.
The problem is the LCD display is very slow in updating sense i was playing
around with settings. The display seems to be working but is
updating slowly. I have tried everything I know but cannot get the display
to work at the correct speed.any advice would be appreciated. Thanks and
73, Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

[Elecraft] K3 Battery

[David Robertson]

There is a battery in the K3. It is a coin cell for keeping memory alive.
If the battery gets low the K3 might indicate a low battery.

73
Dave KD1NA

PS Happy holidays everyone!

From: Don Wilhelm 
To: Mpridesti , "Elecraft@mailman.qth.net" <
Elecraft@mailman.qth.net>
Cc:
Bcc:
Date: Sat, 12 Jan 2019 23:41:44 -0500
Subject: Re: [Elecraft] Battery Low K3
I assume you mean the KX3.  The K3 has no internal battery.

If you have Ni-MH batteries, they need recharging.  If you are using
Alkaline batteries, they need to be replaced.  I assume you have set the
menu BAT MIN for the type of battery you are using.  See the KX3 manual
page 36 of the manual.

Set BAT MIN for the type batteries used.  The default of 10 volts is
good for external Lead Acid batteries.  All other types require a
different setting.

73,
Don W3FPR
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com 

[Elecraft] Items you think you can depend on

[David Robertson]

Everyone,

 Over time we can grow complacent on many service items such as electrical
power, water and other services over time. Well that can be concerning as
many hidden changes can result in damage to your home and equipment.

Late late night I came in to my den and was closing down my ham station
when I notice my fault light on my KPA500 linear was on. I powered it down
and retired for the evening. This morning I powered up the linear (KPA500)
and at once I got a fault light and had a high voltage alert. I powered
down the linear and checked my input line voltage. It was 137 volts RMS! To
be sure it wasn't my imagination I rechecked the voltage with a different
meter with the same result. In checking the 220 volt outlet I measured 274
volts! My linear is set up for 220 volts operation and it was getting over
90 volts HV.

I alerted the neighbors and cut the main breaker to the house. I then
called the power company's service number and reported the problem. A short
time later they called me back and reported that a regulator in the local
sub station had "Stuck" and was reset. In rechecking my line voltage it was
118 volts on the low side and 236 volts on the high side.

In the 12 years we have been at this qth we found that our town's locally
run power company has been very reliable but this experience showed me that
it is not a bad idea to check your line voltage every once in a while.
73

-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K-3 Upgrade

[David Robertson]

Louis,
I would strongly recommend testing your K3 after EACH upgrade is installed.
Do not install everything, then test as you could run into problems.
73

-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] KX2

[David Robertson]

Last week at the Lobstercon hamfest in Brunswick Maine. I had an
opportunity to pit my KX3 against a new KX2. As far as performance they
seem to be identical. We were using a 250 foot end fed random wire and
running and running the rigs off of both internal and external batteries.
The performance of both the KX2 and KX3 were identical as much as we could
determine. I had no problem operating the KX2's front panel controls other
then a small learning curve when first using the rig.

The KX2 seems to perform very well and it's internal battery really runs
the rig well. I don't think I will get the KX2 anytime soon  but it is a
great rig.

-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] K3 Dead

[David Robertson]

Martin.

I am not sure when Elecraft correct the front panel connector problem but
your K3 may have some tin plated plugs on the main RF board that plugs into
the DSB board in the front panel  Remove the K3 front panel assembly and
check the plug on the RF board ( the one that is long with many pins ) and
see if it is gold plated or not. There is a smaller connector that will be
in line with the larger one that would also be tin plated. If you find this
contact Elecraft Support for a connector replacement kit. 73
-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] KXPA100 Keying Mod

[David Robertson]

Everyone.

I had an interesting experience recently. I have a KX3 and KXPA100 ( #519 )
operating in my workshop in my basement. The rig drives my Heathkit SB220
which has the Harbach soft key mod which has less then 1 volt keying
voltage. This allows me to run up to 1000 watts no problem.

A couple of weeks ago a friend brought me his home brew linear to test.
Before connecting his linear to my KPA100 output I checked the schematic
and measured the keying voltage on his linear which was 24 volts dc at less
then 100 ma. When i connected the key line from his linear to the RCA jack
on the KXPA100 interface cable the linear went to key down without any
transmit command from the KX3. I then disconnected the KXPA100 from my KX3
and using the Elecraft keying interface cable to the linear directly from
the KX3, the linear keyed up upon transmit commands from the KX3 normally.
Well I finished testing my friends linear with 10 watts drive and
everything worked fine despite reduced output power.

Later I emailed Elecraft Support and asked them about the KXPA100 keying
problem.
I quickly got a response and a solution to the problem.

It seems that the first manufactured KXPA100 linears below serial number
700 were designed to operate the KPA500 linear which has only a 5 volt
keying voltage. Evidently,There was some problems with keying linear
amplifiers with higher keying voltages so after KXPA100 serial number 700
and above Elecraft modified the keying circuit to accommodate linear amps
with keying voltages up to 30 volts.

I either missed the memo or Elecraft didn't contact those of us about this
problem. Elecraft now has a mod kit that solved the keying problem. The kit
part number is KXPAMDKT2 and is free. It consists of a 4.7K 1/4 watt
ressistor (E500158) and a diode BV19WSTPMS diode (E560076). The diode is
surface mount and the resistor is a leaded resistor. The  instructions are
clear but some may have problems in removing a surface mount resistor (R28)
and installing the diode in its place. The resistor in the kit solders to
existing components.

The reason I am putting out this information is because I didn't know of
the limitations of the KXPA 100's keying input circuit and could have
easily blown that circuit out. Thanks for the bandwidth.
73

Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] Elecraft, RJ45 Standard.

[David Robertson]

Kevin, Thanks for pointing out my typo. I meant 4 pairs.

73

-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] elecraft,RJ45 Standard

[David Robertson]

David Robertson <kd1na...@gmail.com>
9:55 AM (1 hour ago)
to kenin.stover, Elecraft
Kevin,

Thanks for the information on the RJ45 standards. what confuses me is there
are 6 pair of wires in a CAT 5 cable. In the standards you list, the only
difference is the placement of the Orange/Orange-White and
Green/Green-White pair of wires.

As long as you maintain the same standard or a standard you create on BOTH
ends of the CAT 5 cable this cable could be used anywhere, regardless of
the system used. I understand that maintaining a standard of wire color
codes is important for tracing and troubleshooting purposes.

From: Kevin Stover <kevin.sto...@mediacombb.net>
To: elecraft@mailman.qth.net
Cc:
Date: Mon, 2 May 2016 18:50:46 -0500
Subject: Re: [Elecraft] K3S RJ-45 Pin Alignment
The standards go thusly.

TIA/EIA 568-A (T568A)

Pin 1 - white / green stripe

Pin 2 - green

Pin 3 - white / orange stripe

Pin 4 - blue

Pin 5 - white / blue stripe

pin 6 - orange

pin 7 - white / brown stripe

pin 8 - brown


TIA/EIA 568-B (T568B)

Pin 1 - white / orange stripe

Pin 2 - orange

Pin 3 - white / green stripe

Pin 4 - blue

Pin 5 - white / blue stripe

Pin 6 - green

Pin 7 - white / brown stripe

Pin 8 - brown

-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] Elecraft, Other equipment review.

[David Robertson]

I noticed many complaints about other non elecraft equipment mentioned on
this forum. I feel that commenting on non Elecraft equipment here is a good
way of propagate interesting information. Care must be taken to not dwell
on this topic too long but a brief mention of other equipment I think makes
this forum interesting.
73

-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] RJ45

[David Robertson]

Kevin,

Thanks for the information on the RJ45 standards. what confuses me is there
are 6 pair of wires in a CAT 5 cable. In the standards you list, the only
difference is the placement of the Orange/Orange-White and
Green/Green-White pair of wires.

As long as you maintain the same standard or a standard you create on BOTH
ends of the CAT 5 cable this cable could be used anywhere, regardless of
the system used. I understand that maintaining a standard of wire color
codes is important for tracing and troubleshooting purposes.

From: Kevin Stover 
To: elecraft@mailman.qth.net
Cc:
Date: Mon, 2 May 2016 18:50:46 -0500
Subject: Re: [Elecraft] K3S RJ-45 Pin Alignment
The standards go thusly.

TIA/EIA 568-A (T568A)

Pin 1 - white / green stripe

Pin 2 - green

Pin 3 - white / orange stripe

Pin 4 - blue

Pin 5 - white / blue stripe

pin 6 - orange

pin 7 - white / brown stripe

pin 8 - brown


TIA/EIA 568-B (T568B)

Pin 1 - white / orange stripe

Pin 2 - orange

Pin 3 - white / green stripe

Pin 4 - blue

Pin 5 - white / blue stripe

Pin 6 - green

Pin 7 - white / brown stripe

Pin 8 - brown


-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] , K3 Gold Plated Plug Replacment

[David Robertson]

Everyone,

I have an old K3 ( Serial # 934 ) and was starting to be plagued by
interconnection problems inside of my K3 caused by the tin plated plugs.
After contacting Elecraft I received 2 connector kits. One for the 100 watt
power amp connections ( KPA3 ) and one for the front panel ( J30 and 35 ).
Since I installed these gold plated pluge my interconnection problems seem
to have gone away. I am still concerned about the remaining tin plated
plugs in my K3 but Elecraft indicated that there has been no known issues
with these remaining tin plated connectors.

My question is has anyone who owns an old K3 experienced any other tin
plated pin issues with internal K3 connectors other than the ones that
Elecraft addressed?

73

-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] Why black is the hot wire

[David Robertson]

At the early part of the 20th century, when electricians were wiring houses
(knob and tube), the color of the electrical wire was only black. The power
companies found that one side of the power feed (center tap on 220) to the
house or building had to be grounded to prevent voltage buildup on the
power lines. In order for the electricians to keep track of the grounded
side (neutral)  of the power feed they painted the grounded (neutral) wire
white. Soon after the wire manufacturers started making both black and
white wires so the electricians now could safely wire buildings without
resorting to painting the ground wire white.

73
-- 
Dave Robertson KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] Locktite

[David Robertson]

One of the members of this e=mail forum made the following statment:


If the radio is going to be used in a high vibration environment, like a
car, sealing the screws with Loctite might be a good idea.

Although he is correct, you must be very careful on which type of Locktite
you use. Locktite comes in colors and you want to stay away from the red
color Locktite as it is perment. Using it will make it very difficult, if
not impossible to remove.

73
Dave KD1na
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] New Synch Boards

[David Robertson]

Toward the end of February I called Elecraft to check on my order of the
two synch boards and was informed they were sold out and I have to wait for
the back order to come in.

Well yesterday got an e-mail from Elecraft letting me know the boards were
shipped!

So everyone get ready for your new boards.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

[Elecraft] 5.14

[David Robertson]

Wayne,
First I want to thank you for all the personal communications you have
given to me in helping me out with my firmware problems. I know you are
very busy and I really appreciate it.

The good news. I downloaded a new version of 5.14 from your FTP site this
morning and installed it. everything was successful and both VCO's
calibrated fine. Now I am all set for when the new boards come in.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Message delivered to arch...@mail-archive.com

Re: [Elecraft] Firmware 5.13 strange issue

[David Robertson]

Wayne you sent me this e-mail that you sent to the forum and K4ZRJ.
concerning the 5.13 (and 5.15 which I don't have) You made a statement in
the e-mail the 5.13 has a bug which effects PLL calbration.

After cleaning all the tin plated contacts within my K3 and installing 5.13
I still ran into errors in calibrating my PLL. Being a retired engineer I
committed a sin by making an assumption. I assumed the old PLL cards will
calibrate with the 5.13 firmware. Everything works correctly with 5.10.

Please enlighten me us all on which firmware (5.13, 5.14, or 5.15) can be
used with the old PLL boards and the PLL calibrates. ( I will get the new
PLL boards in a couple of weeks). Are the new PLL boards going to work with
the new beta firmware?

73
Dave KD1NA

On Tue, Mar 3, 2015 at 6:22 PM, Wayne Burdick n...@elecraft.com wrote:

 Guys,

 Please read carefully and let me know if this rings a bell.

 tnx
 W


 Begin forwarded message:

  From: Charles Johnson k4...@icloud.com
  Subject: Fwd: Firmware 5.13 strange issue
  Date: March 3, 2015 10:56:22 AM PST
  To: Wayne Burdick n...@elecraft.com
 
  Wayne,
 
  Any thoughts on this?
 
  73, Charles, K4ZRJ
 
  Begin forwarded message:
 
  From: Charles Johnson k4...@icloud.com
  Subject: Re: Firmware 5.13 strange issue
  Date: March 1, 2015 at 6:44:24 PM EST
  To: Wayne Burdick n...@elecraft.com
 
  Wayne,
 
  More investigative results:
 
  Still on 5.14 with new synthesizers.
 
  I have:
 
  1) Disconnected the KPA500/KAT500 control cable and connected the K3
 via a 6 inch length of coax to a W2 sensor and that to another 6 inch
 length of coax to a Bird dummy load.
 
  2) Done an EE INIT and manually added the K3 options and filters. This
 K3 has all options except 2M module. Have not restored my saved
 configuration file.
 
  3) Done a transmit gain calibration, can send the results if you think
 I should.
 
  4) Observed the following with the K3 in CW mode and the power output
 set to 100W:
 
  When I key the K3 (for a short time, say less than 5 seconds) on a band
 (say 10M) with a continuous key down, the SWR and RF output bar graphs will
 go blank after briefly showing normally. The power output at that time as
 measured on the W2 will be low, around 70 watts or so (varies with each
 band).
 
  When I again key the K3, I generally (not always) get the same result.
 After two, maybe three more keyings, the power output slowly rises.  After
 another one or two keyings the output will be at 100 or more and the bar
 graphs will persist. After another keying, the power output stays as it was
 the previous time, but the bar graphs once again go blank.
 
  5) When I change to another band, all this happens again, pretty much
 in the same order. After coming back to a band where this behavior has been
 previously noted, it happens again from the start.
 
  6) I have never noticed this behavior before installing the new
 synthesizers, but I never used the K3 barefoot at 100W either (always used
 the KPA500).
 
  7) There does seems to be a spike issue on 10M that initially faults
 the KPA500, but can be mitigated by reducing the K3 output power but that
 results in low drive to the KPA500 so that its output is in the 400 watt
 range.
 
  If you want, I can revert to the old synthesizers if you think it would
 be worth while to do so, but I would only install the main unit and disable
 the sub receiver by not installing its synthesizer.
 
  I don’t know if this is a hardware or software issue, but the blanking
 of the graphs seems odd for a hardware problem.
 
  Ideas?
 
  73, Charles, K4ZRJ (K line with KAT500  W2) Old retired software
 engineer who likes to putz around with stuff.
 
 
 
 
  On Mar 1, 2015, at 1:47 PM, Wayne Burdick n...@elecraft.com wrote:
 
  I haven't hear about anything like this. I would first eliminate as
 many variables as possible. If you disconnect the KPA500 and any ATU and
 use a dummy load, how does the K3 behave? If it calibrates normally and
 works at various power levels (both QRP and QRO), the problem is likely to
 be with the KPA500.
 
  Let me know--
 
  Wayne
 
 
 
  On Feb 28, 2015, at 9:09 PM, Charles Johnson k4...@icloud.com wrote:
 
  Wayne,
 
  Just installed two new synthesizers and under 5.14 noticed the SWR
 and RF out bar graphs disappear quickly after keying the transmitter. If I
 keep the key down, the graphs go away, if I send a string of dits, they
 display. Its like they are present for a short period of time, then
 disappear.
 
  Also noticed the transmitter appears to overshoot with high RF on 10M
 particularly causing the KPA500 to fault. I’ve done the TX gain calibration
 several times as I shift between firmware versions. The K3 output level
 going into the KPA500 is 25 watts on 10M. If I reduce it to 22 watts, then
 when the transmitter output settles, the KPA500 is only putting out around
 450 watts. Seems the transmitter output isn’t too stable. This has actually
 been an issue since installing the KPA500 

[Elecraft] KX3

[David Robertson]

Everyone.

Some time ago I tried using NAP3 with an external USB stereo input sound
module on my battery operated laptop with my battery operated KX3. Nothing
was referenced to any power line source. The software worked fine.  Hooking
up the battery charger to the laptop or running the KX3 off the main power
supply resulted in a buzz from the KX3 speaker and NAP3 not working.
Disconnecting the I/Q cable killed the buzz.  I had the same problem using
my desktop computer. I purchased some 600 Ohm isolation transformers and
connected them between the sound module of the computer to the I/Q output
of the KX3. The problem went away and NAP3 worked perfectly.

I just got my new KXPA100 linear and control cable. When testing the linear
I had been running NAP3 and I noticed that when I powered off the KX3 and
the KPA100 linear then powered the KX3 back up the linear went in to a
firmware loading mode and was unresponsive to any K3 commands.

The problem seem to be having NAP3 running and linked to the KX3 through
the RS232 port. With NAP3 running and it's poling the KX3 from the computer
caused interference between the KX3 issuing commands to the KXPA100 during
power up.  Shutting down NAP3 then powering up the KX3 resulted in
everything starting up fine and full control to the linear from the
KX3. After everything is started you can run NAP3 with no problems, just be
sure the software is off before starting the KX3. I have not used any other
pan adapter software but if it needs input from the KX3 it may cause
problems when left running and trying to start the KX3 with the KXPA100
linear.

The KXP100 Linear is working fine. I have used it with my SB220 and had no
problems. Well done Elecraft!

73 to all
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] (no subject)

[David Robertson]

Happy Thanksgiving everyone

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] ] Elecraft] KPA500 to K3 control cable

[David Robertson]

Jim,
The cable Elecraft sells is of top quality but is only 3 feet long. If that
length is ok then get it. If you need longer cable you can build it. The
schematic is in either the KPA500 construction or operation manual ( I
think it is in the construction manual).

You need 2, 15 pin HD D connectors ( Male type ) and an old parallel
printer cable or a old RS232 cable with DB 25 connectors at each end. It
took me about 20 minutes to build mine after rounding up the parts. I made
mine 5 feet in length which was just right for my station.

73

Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

Re: [Elecraft] ] Elecraft] KPA500 to K3 control cable

[David Robertson]

Steve, Sounds like a good idea and I have lots of cat5 cable laying around.

73
Dave KD1NA

On Sun, Oct 7, 2012 at 8:55 AM, Steve Kercel aa4a...@gmail.com wrote:

 Another trick that works:

 If you're using a K3 and KPA500, there are only 9 lines needed, and two of
 those are grounds. A CAT5 cable has 8 lines. If you use one line for ground
 and connect it to both ground pins at each end, you have the necessary 7
 lines left. I used this scheme to build a 15 foot jumper. It works
 perfectly. I discussed this with Eric before I tried it.

 73,

 Steve
 AA4AK



 On 10/7/2012 7:44 AM, David Robertson wrote:

 Jim,
 The cable Elecraft sells is of top quality but is only 3 feet long. If
 that
 length is ok then get it. If you need longer cable you can build it. The
 schematic is in either the KPA500 construction or operation manual ( I
 think it is in the construction manual).

 You need 2, 15 pin HD D connectors ( Male type ) and an old parallel
 printer cable or a old RS232 cable with DB 25 connectors at each end. It
 took me about 20 minutes to build mine after rounding up the parts. I made
 mine 5 feet in length which was just right for my station.

 73

 Dave KD1NA
 __**__**__
 Elecraft mailing list
 Home: 
 http://mailman.qth.net/**mailman/listinfo/elecrafthttp://mailman.qth.net/mailman/listinfo/elecraft
 Help: http://mailman.qth.net/mmfaq.**htmhttp://mailman.qth.net/mmfaq.htm
 Post: mailto:elecr...@mailman.qth.**net Elecraft@mailman.qth.net

 This list hosted by: http://www.qsl.net
 Please help support this email list: http://www.qsl.net/donate.html



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KX3 Aux 2 linear keying hookup

[David Robertson]

Philippe,

On the 2.5 mm Aux2 jack connect the ring to your linear's Key input. The
sleeve is ground.  Do not connect anything to the tip as that is a DC
voltage. Make sure the linear's keying voltage and current is low. Old
linears like the Collins and Heathkit SB series employ high keying voltages
and will damage the KX3. Elecraft has not been at all clear about the Aux2
jack on the KX3 manual.  Have fun with your KX3. I am having a ball with
mine.
73
Dave KD1NA

On 8/17/2012 1:05 PM, philippe PARACHEY wrote:

Hello Dear Dave,

 I have read your post on the Juma with KX3, very fine. I just received the
KX3 this morning...

 On the book, the setup to connect an ext amp to KX3 is not very clear...

 Could you tell me how to use the 2,5 mm stéréo jack, tip, ring, sleeve???
to connect a simple relay to the amp.

 My first qso this afternoon was with NA, 10W, too funny. Thanks in advance.

 Best regards,


73's Philippe F5JWH

 SKCC N° 8069T

 Philippe PARACHEY
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] (no subject)

[David Robertson]

Fred,
Thanks for your comment. I have to assume you have a less then staller
opinion of the Juma PA-100-D. Well with -28 db third order IMD this
specification matches the K3-100's IMD spec. and this is with 100 watts
out. All the reports I have gotton reported no problems with my signal,
including those using panadaptors. You mentioned the price, well find a
linear that had the same ability as the Juma PA100=D for less. It looks
like it matches the new TenTech linear for around $700.

I am only a consumer, I have no business interest in Juma but for a little
company started by 2 hams in Finland with a lot of design and engineering
experience, they look amazingly alot like another company we all know when
they first started out (Elecraft). Look at the schematics and read their
theory of operation before you judge the Juma products.

73
Dave KD1NA


David: Who are you going to believe? Me or your lying eyes? (;
While it is highly desirable to use a clean exciter, The only way a clean
exciter can make a bad amp better is to enclose the amp in a feedback loop
originating in the PA and terminating in the exciter. This can be done in a
rig such as the K3/100 where both the amp and exciter are in the same box
but is near impossible where you are dealing with 2 separate boxes.
Simply: If the Juma is broke, the KX3 can't fix it.
73
Fred, AE6QL
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KX3 and Juma PA100-D linear

[David Robertson]

Everyone,
On the Juma linear I am using with my KX3 I have received comments from the
e-mail forum about the unpublished 3rd order IMD specifications of the Juma
PA100-D linear amp. Well I did some testing with my limited equipment at my
station and I measured the following:

KX3 running 5 watts out -35db third order IMD

KX3 driving the Juma PA100-D linear with 100 watts out -28db third order
imd.

Because the exciter (KX3) has a very good but not perfect output I would
assume that it would effect the accuracy of the linear's output IMD
measurment. Any comments

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KX3 Juma Linear.

[David Robertson]

Everyone I have a KX3 #700 that is working fine. I am providing you this
information for those that are interested. The linear works fine with the
KX3 on all modes.

I have ordered and built a Juma P100-D linear for use with the K3. With 3
watts drive the linear puts out 100 watts. You can see the linear at
www.jumaradio.com.
Below is an e-mail I sent the engineers at Juma radio with My experiances
in building this linear kit and I wanted to share this with you.

73
Dave KD1NA

( e-mail to JUMA )

Juha and Matti,
Last month I ordered and received one of your PA100-D kits. This e-mail
will convey my experiences and issues in assembling the kit.

First off let me inform you that the PA100-D is fully operational and has
met my total expectations.

I was quite satisfied with the quality of the components and design of the
amplifier. The documentation, though sparse, provided me enough information
needed to get everything together. The pictorial procedure to both winding
the toroidal  coils on the main board and the construction instructions on
the PA board were very good and well documented. The parts lists as well as
the printed circuit board layout documents gave me a good road map to where
everything goes. Your schematic drawings are very good quality and easy to
follow.

I will state that this kit is not for the beginner and in fact it would be
safe to say that over 50% of the hams in the United States would lack the
skills to assemble your kit. Having said that I will say after completing
your PA100-D kit I have a great amount of pride in the fact that I built
this unit and it performs so well.

My surface mount experience is limited and at first I was clearly
struggling to properly getting the components mounted. After completing the
control board ( I chose the most challenging board first ) I started to get
very comfortable working with surface mounted components. It was the small
resistors that was most challenging.

Construction issues:
The PA Board;
The copper wire that was to make the ground connection and also assembling
L3 was missing and in it's place was a small spool of solder.

The brass cores that make up transformer T1 on the PA board were not the
same diameter. One was 0.3 mm too large diameter and wouldn't slip into
it's core. I machined it down to make it fit and it is working fine.

The front panel board's holes that pass the push-button switches were too
small and caused the buttons to bind after mounting the panel on the
control board. I enlarged the holes about 1mm now the buttons pass through
freely.

On the PA board the Z1 and Q4 components were very hard to read the
printing on the components even under very high magnification. We had the
same problem on the Main board with Z1 and TR1. A suggestion is to tape the
component's package to a small piece of paper with it's identification
written on it. On some packages containing multiple devices you often had
labels attached so no problem even though reading the actual component's
number was near imposable.

Another observation is you refer to transistors as Q1 or Q2 on the PA and
control board parts list and schematic, but list them as TR1 and TR2 on the
main board parts list and schematics. I had no problem with this but this
could lead to  less experienced builders.

Overall the kit was fun to build and the end product works quite well. For
your information I am driving the linear with an Elecraft KX3.

I will copy this e-mail to your e-mail forum as well as to the Elecraft
forum for everyone's information. You make a great product.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KX3

[David Robertson]

Everyone,
Just for your information. Because I was concerned about metal parts being
attracted to the speaker through the chassis holes in the KX3, I applied a
layer of silicon rubber to the inside of the metal case where the speaker
mounted then mounted the grill cloth and spacer to the case. Waited until
the silicon set up then mounted the speaker. Works good and sounds nice.
Now I have both protection against metal fragments being sucked into the
speaker and the rig sounds nice.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KX3 Arrivel

[David Robertson]

Everyone,
I finally received my KX3 kit #700 last Wednesday ( July 11 ).

The only issue was the battery cable was a little short making it
challenging to keep it connected to the control board when opening the rig
up.

Another issue was the 4-40 screws provided to fasten the final power
transistors to the side panel/heat sink were too short. I dug into my
Elecraft parts box ( built many kits ) and found some that were the correct
length.

I upgraded the firmware to 1.06. When the firmware upgrade was finished I
powered down the KX3 and was not able to power up the rig until I removed
one battery and removed the power cord. After reinstalling the battery and
power connection the KX3 powered up as normal with the new firmware.

The radio works very well and my first qso was on 75 meters on AM!! Good
audio reports. Sideband reports were good too.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KX3 Order

[David Robertson]

I just received my order confirmation e-mail from Lisa at Elecraft. I
ordered it December 28th and it is the kit. I am getting all the
excessories except the battery charger (not in stock) and the key (not
ordered). My order number is 85917 for those who are keeping track. The
message stated delivery in early July. Better clear my workbench!!

73
KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KX3 Order

[David Robertson]

Earlier today I posted notification from Elecraft that my KX3 Kit was ready
to ship. Instead of giving you the order number I mistakenly gave you the
invoice number.
Here is the order number

2208-5523-4906

Sorry for the mistake.

73

Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KPA 500

[David Robertson]

Everyone,

I have had my KPA500 linear for some time now and have been really happy
with it. I use it with my K3 and they communicate with each other via the
DB15 AUX cable that I built ( the one furnished by Elecraft was too short).

The only issue I have encountered is the finals in the linear seem to heat
up rather quickly causing the fan to kick in in a rather short period of
time. it doesn't matter if I use the dummy load or a good match antenna. I
also noticed the finals seem to cool rather quickly after the transmittion
is terminated and the fan turns on after about 30 seconds to one minute
after starting a ssb transmittion then goes to a higher speed after about
30 seconds more. If my transmittion time is greater then 2 to 3 minutes the
fans go to high and the final temperature is around 70 degrees C.  I have
never had the linear go in to a fault because of heat.

The fix.

I removed the top, front, and right side panels of the KPA500. When I first
built the linear I realized the mounting screws that mount the Z panel to
the amplifier module were too long so I used the shorter ones that would
normally go to mount the top panel. On inspecting these screws they were
tight. Looking at the right panel I noticed there are  4 screws that mount
the panel directly to the amplifier's heat sink. They were not as tight as
I would have liked. I wanted to get the most efficient heat transfer from
the module so I carefully applied some heat sink compound to the side of
the heat sink of the amplifier module before carefully mounting the right
sied panel back on the amplifier. I carefully made sure the 4 screws that
mount from the panel to the heatsink ( which are normally covered by the
handle) were solidly and carefully tightened. After inspecting the
transformer connections and the rest of the inside of the linear I
reassembled it and tested it out.

Findings.

Now when I am running ssb typically the fan doesn't come on until well in
to the qso and never has the fan reach high mode. If I brick the key at 500
watts into a dummy load the fan goes high after about 2 minutes. I also
noted the finals heat up slower and cool slower and the left panel
temperature follows the final temperature..

Now the amp seems very happy and I am not bugged by the constant fan noise
during a qso.

I thought I would pass this on to everyone.

Thanks and 73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K2-100 for sale

[David Robertson]

Everyone,

I have a K2-100 for sale. The serial number is in the 5000 range so it has the 
upgrades installed. This radio works very well and has been in a non smoking 
environment. It contains the following:

KSB2
Noise blanker
Digital signal processor
KPA100
Kat100

The amp and tuner are built into the lid of the K2's case.

Asking $800.00 but any reasonable offer accepted. Shipping will depend on offer.
Please contact me directly at darjar at comcast.net

Reason for selling: Getting the KX3 and need the money.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [K2] question

[David Robertson]

According to the manual and having done this before, while in CW mode holding 
the Store button then selecting your message number (1 through 9) will allow me 
to record a CW message to that numbered memory. Now when I hold STORE and 
select the number the K2 returns back to the frequency display and no message 
is recorded. I have been doing some work to the K2 and might have screwed up 
some menu setting. Any Suggestions?

Thanks and 73
KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KPA500 Cable

[David Robertson]

Phil,
The KPAK3 AUX Cable is about 3 feet long. I found that it was too short for my 
station. It is great if you stack the K3 and linear on top of each other but 
other configurations the cable can be too short. I cut up an old parallel 
printer cable which was shielded and had enough conductors. I bought the DB-15 
plug and connector and using the cable schematic in the KPA-500 manual built 
mine about 5 feet long. It works  great.

Assembly took me about 4 hours. It is not quite involved as the K3 but there is 
a lot of assembly. It is worth getting the kit.

73
Dave KD1NA



Finally I am getting around to seriously consider getting the KPA500.  But, a 
couple of questions:

(1)  How long is the KPAK3AUX cable?  From one diagram (image) on the web site 
it does not look much longer then 1.5 feet.  Is the short length required for 
timing issues?  With the way my shack is set up right now, I could not place 
the KPA500 right next to the K3.

(2)  The difference in cost from kit to factory built is $400.  Does this 
rather high cost reflect the complexity of the building process or merely the 
cost of the amp (at $2000).  I did the K3 build in what I would consider 
average time of about 8 hours.  How does the KPA500 compare to the K3 in 
complexity and build time.

(3)  The PC serial interface is direct to the PC (Mac in my case) via a serial 
to USB cable, correct?  I mean, it does not interact with other equipment 
(serially connected) such as the K3 or P3, true?

Thanks for your help.

73, phil, K7PEH

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Antennas

[David Robertson]

I get my elecraft mail in journal form so my response is delayed. I had to 
mention that people who make broad statements about feed lines and antennas 
should check the antenna book and handbook before producing the wrong 
information.

Here is an example:

The impedance of the feed line does not change the impedance of the antenna.  
A half wave length dipole at the proper height is still a 50 ohm feed 
regardless of whether it's fed with 50ohm line or 600 ohm line.

Last time I checked a dipole (single wire 1/2 wavelength center fed) is 75 
ohms. The part of the statement about impedance of the feed line is correct but 
with swr on the feedline the apparent impedance can can different
Happy Holidays everyone.
73
Dave KD1NA

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KPA500

[David Robertson]

Greetings everyone,

Friday. evening the friendly UPS driver was at my door with a 33 pound package 
and waiting for a signature. I unpacked the KPA-500 kit and inventoried the 
parts. Boy the main power transformer looks strange. Well last night I finished 
the assembly and after plugging in the power cord and saying a little prayer to 
the component Gods I turned it on. WOW it worked!!.  Seriously, the kit went 
together well. There was one small problem. The small gray high voltage wire 
that snakes through the hole in the Zee bracket snapped off the power supply 
circuit board. It appeared that the conductor portion of the wire was nicked 
during stripping. I resoldered the wire back in place and continued building. 
(Who says these are no soldering kits :-). Finding hardware seemed to be 
somewhat confusing in the way they were bagged but everything was there. The 
two biggest challenges in building the KPA-500 was installing the rear panel 
and getting the main power transformer properly mounted. Thank
 s to lots of pictures in the manual I got it finished.

Hooking it up to my K3 was easy but the control cable I purchased was a bit too 
short by 6 inches for the station configuration. I simply added the split cable 
and problem solved. (Would suggest adding between 6 inches to a foot to the 
cable). My linear is configured for 220 volts operation and operates very 
smoothly and quietly. Reports were good and it is nice to have the K3 configure 
it's driving power to match the linear's need. As usual Elecraft, you did it 
again, congratulations!

During the time I was testing the linear Saturday evening there was a loud 
crash on the roof of the house. seems the heavy snow took out a tree limb and 
it bounced off the roof on it's way down.  No damage but there was lots of 
power outages and tree damage here.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Windows XP

[David Robertson]

Everyone.
Someone remarked Windows XP operating system was dead. I have to disagree. 
Though Windows XP is old it is still one of the most successful operating 
system that Microsoft came out with and is still supported with up-dates. I run 
both windows 7-64 and XP and both operating systems perform well. 

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Tokyo High Power HL-1.5KFX Linear

[David Robertson]

Everyone,

My Tokyo High Power HL-1.5KFX has been sold pending receipt of funds. Thanks to 
everyone who responded.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] For Sale Price adjustment

[David Robertson]

I have a Tokyo High Power linear amplifier model HL1.5KFX for sale. I have had 
it less then a year and it has been operating perfectly since I installed it. 
It is in a non smoking environment. I also have the original manufacturing 
carton. The amp comes with a 120 volt power cord. It also includes the K3 
interface cable. It has been operated with 220 volts but I will change it to 
110 volts when shipping unless otherwise directed. The amplifier is in new 
condition with no scratches on the front panel.

Asking $2700.00 or best offer which includes shipping in CONUS.  Payments can 
be made by PAYPAL or cashers check.

Please reply directly.
Dave Robertson KD1NA
dar...@comcast.net

73
KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] For Sale

[David Robertson]

I have a Tokyo High Power linear amplifier model HL1.5KFX for sale. I have had 
it less then a year and it has been operating perfectly since I installed it. 
It is in a non smoking environment. I also have the original manufacturing 
carton. The amp comes with a 120 volt power cord. It also includes the K3 
interface cable. It has been operated with 220 volts but I will change it to 
110 volts when shipping unless otherwise directed. The amplifier is in new 
condition with no scratches on the front panel.

Asking $3000.00 which includes shipping in CONUS.  Payments can be made by 
PAYPAL or cashers check.

Please reply directly.
Dave Robertson KD1NA
dar...@comcast.net

73
KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Broken Links

[David Robertson]

The links you sent were broken.
73
Dave KD1NA


Message: 28
Date: Sat, 3 Sep 2011 08:14:00 -0700 (PDT)
From: wa9fvp rep...@willcoele.com
Subject: Re: [Elecraft] RTTY FILter
To: elecraft@mailman.qth.net
Message-ID: 1315062840767-6756770.p...@n2.nabble.com
Content-Type: text/plain; charset=us-ascii

Here's are the actual Butterfly filter outputs using an Agilent DSOX3024
digital storage scope connected to the mark/space (or X/Y) outputs on the
M8000.   The first image is the actual DSOX3024 screen shot  with the K3 in
USB mode on 20 meters, copying RTTY 45/170.   The second photo is the same
setup except the K3 is in FSK/DATA mode. 

http://elecraft.365791.n2.nabble.com/file/n6756770/rtty_usb_mode.bmp 
http://elecraft.365791.n2.nabble.com/file/n6756770/rtty_data_mode1.bmp 

-
Jack WA9FVP
Willco Electronics
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] New Links now good

[David Robertson]

Didn't go down and try the new links  Sorry for the false alarm.
Dave KD1NA

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] New K3

[David Robertson]

Paul,
Sorry to hear about the loss of all your equipment.  In looking at your order I 
have a question.
Why are you ordering both the 2.1 and 1.8 KHZ filters?  I have the 1.8 KHZ 
filter in mine and it really works effectly on SSB, Didigal and CW (Wide). If I 
were you I would order the 6 KHZ filter instead. I find it comes in handy when 
tunning the band and I do run AM.

73K3/100-F
K3 100W Xcvr. (Assembled)
$2199.95 
ea.
1 
$2199.95 
increase  decrease  remove 
KAT3-F
K3 ATU (Fact. Installed)
$339.95 
ea.
1 
$339.95 
increase  decrease  remove 
KFL3A-1.8K
K3 1.8 kHz, 8 pole filter
$130.95 
ea.
1 
$130.95 
increase  decrease  remove 
KFL3A-2.1K
K3 2.1 kHz, 8 pole filter
$130.95 
ea.
1 
$130.95 
increase  decrease  remove 
KFL3A-250
K3 250 Hz, 8 pole filter
$130.95 
ea.
1 
$130.95 
increase  decrease  remove 
KFL3A-400
K3 400 Hz, 8 pole filter
$130.95 
ea.
1 
$130.95 
increase  decrease  remove 
KRX3-F
K3 2nd RX (Fact. Assm.)
$659.95 
ea.
1 
$659.95 
increase  decrease  remove 
KUSB
Univ. Ser Bus Adapt.
$39.95 
ea.
1 
$39.95 

Dave KD1NA

PS It was a blast working you guys!

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Tom N0SS

[David Robertson]

Everyone,

Looking back at Dayton in 2010 I met Tom personally at the Elecraft booth. I 
shook hands with him but got so busy assisting customers at the booth I didn't 
have a chance to talk with him. In building my K2 his publications on his web 
sits were extremely helpful. I know he has contributed directly to the success 
of Elecraft, especially the K2 and K3 rigs. I wish I had taken the time to talk 
to him. I would have learned allot.

Tom 73 and rest peacefully.
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 Cal

[David Robertson]

Chuck,
Using CW and CW reverse is really a good procedure. I have used USB/LSB when 
WWV was transmitting a tone with the same effect. Your method doesn't require a 
modulated tone as you are using the actual carrier. The only issue with our 
calibration procedures is you have to have good pitch hearing and many of the 
ham radio operatores are tone deaf. For those who are tone deaf use the zero 
beat method using the side tone in the K3. From now on I will use your method 
as I don't have to wait for a tone to be transmitted by WWV.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [Elecraft K3] Frequency Calibration using Sidetone

[David Robertson]

I see many references using the CW sidetone as a calibration tool for the K3's 
frequency readout. I fully understand the logic behind using the sidetone but 
this brings up a question.

What is the reference for the sidetone frequency within the K3? Is in the K3's 
master oscillator? If you are in fact changing the master oscillator frequency 
to match K3's readout to an actual frequency, and if the sidetone frequency is 
derived from the same master oscillator aren't you defeating the purpose of 
your calibration. It seems logical to me to a method of calibration that your 
reference is not derived from the same oscillator you are trying to calibrate.

Having said the above here is the method I use.

On usb mode I tune the K3 to the reference standard you are using ( Any AM 
station such as WWV or any station of a known frequency). I set the readout to 
the exact known frequency of that station. I note the pitch of the sound I hear 
from the station (the tone from WWV or CHU works best) . Next I switch to LSB 
and note the pitch of the sound. If they are identical then the K3 is 
calibrated. If the pitch changes then you have to configure the master 
oscillator's frequency so the pitch between USB and LSB match.  I relies the 
above method requires a good ability to note slight changes in pitch. Some of 
us do not posses that ability and must use a different method. For those that 
do, this method works.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [Elecfaft K3] Power Cycle

[David Robertson]

Everyone, 
Many times by both the K3 engineers and others it has been stated to recycle 
the K3 power after doing a firmware upgrade. I understand the logic behind this 
action and do perform a power reset after doing a firmware upgrade or reload.  
My question is this. Every time a firmware upgrade is installed there are 
several apparent power resets that occur, even after the firmware install is 
finished. Am I correct in assuming these apparent power resets are not complete 
resets?

Thanks and 73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [Elecraft K3] ALC readout

[David Robertson]

Greetings everyone,
I am a bit confused about the exact number of bars in the ALC meter that is 
used for VU.  Both 4 bars and 5 bars have been mentioned. When I am on PSK I 
run the audio on 5 bars with no report of distortion.Setting the line input 
level to less than 5 bars have resulted in a relative long period of time for 
the power out of the K3, where as with 5 bars the K3's power out sets up very 
quickly.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [Elecraft K3]Buying a K3

[David Robertson]

Gary,
I have had a K3 for 2 years now (Serial # 934) and have found that getting this 
rig was the best thing I ever did.  You obviously have done your homework and 
done it very well.  Let me state that as a retired product support engineer and 
technical instructor for a company that manufactures atomic partial 
accelerators primarily for the semiconductor industry, supporting the product 
you manufacture is just as important as properly designing it.  Wayne and Eric 
have not only put together a world class team for Elecraft, they also seriously 
listen to their customers. Tell me about any Japanese ( and even some American) 
companies that do that on a regular basis.

I have had the honor  of working with Eric and his lovely wife at the 
Marlborough, Ma. at the Elecraft booth during this year's ARRL Convention. He 
is one of the most dedicated and helpful person I know. Having people like Eric 
and Wayne creating a company dedicated entirely to Amateur radio equipment of 
the finest quality and in kit form requires both expert design and a product 
support team that continuously goes out of their way to make sure the customer 
is listened to and properly taken care of.

Good luck on your choice of radio but I hope it is the K3.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [K3] 4.22 Firmware

[David Robertson]

Don and everyone.
The latest firmware release,(4.22) has DSP 2.70 included, not 2.71.

73
Dave KD1NA



The latest final firmware release (4MCU 4.22/DSP 2.71 should have fixed that, 
and is now at release level - 
at least the firmware release notes indicate that it was fixed.
If it does not cure your particular situation, please report the 
specifics (relevant settings etc.) so it can be analyzed.



73,
Don W3FPR



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] KDSP-2 Boot up Problems

[David Robertson]

I have had my Elecraft K2 for about 3 years now with no problems. Now I am 
having the KDSP-2 module not properly booting up ( the LED remains on ) some 
times when turning on the K2. When it does boot up it works perfectly. Often it 
doesn't boot which results in no audio out but when I power the K2 down and 
then imminently back up the KDSP-2 starts working normally.
I have checked all the soldering and looked for solder bridges and found none. 
I did have some problems with the KDSP-2 shorting on the speaker of the 100 
watt amplifier heat sink but I have fixed that. When the KDSP-2 is working it 
remains working even when I subject the K2 or the KDSP-2 to some small knocks 
or vibration, so it is not an intermittent connection.
Any suggestions??

Thanks and 73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Cable for HL 1.5kfx

[David Robertson]

Dale and all,
I just made a cable for the 1.5kfx. I had found that the Yeasu plug pinout is 
not listed or shown in the linear manual that you download so I opened up the 
linear and traced the circuit in order to make up the cable. In looking through 
the linear manual that came in the linear package there was a page added that 
provided information on all the interface sockets on the back of the linear. 

I was going to modify the provided Yeasu cable but it is only about 2.5 feet 
long so I used an old RS232 cable that was shielded. The needed connector that 
plugs into the back of the linear is easily removed from the original cable and 
can be reused in the new cable. You will need to get a Mini DB=15 male 
connector and shell to connect to the K3.

For the ALC connection I took an old phono cable with RCA Connectors, cut off 
one end and connected it to the K3 plug along with the band decoding cable.
Hope this information is helpful.

If you need the pinout information you can fine it in both the K3 and linear's 
manual (last page).

For the Yaesu connector going clockwise from the connector key (looking at the 
connector from the rear panel of the linear, pin 1, band 0, pin 2, Band 1, Pin 
3 band 2, Pin 4 band 3, Pin 5, ground.

73
Dave KD1NA


Is there anyone on the list that has made up the interface cable from the K3 
RS-232 to the SPE's DB-15 connector? If so, pin out?

Tnx,
Dale W4OP 




__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] THP Amp

[David Robertson]

Everyone,
Thanks for all your input on the HL-1.5kfx linear. With all the information you 
provided and digging out information from both Yaesu and THP I now have enough 
information to make the proper cable.
Again thanks for your input.
73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Ten-Tec Eagle

[David Robertson]

Everyone,
A friend of mine e-mailed me with an attachment with information about the New 
Ten-Tec Eagle HF-6 meter tranceiver I don't know much about the rig yet but so 
far found it interesting. To find it just Google ten-tec eagle.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [P3] Tilt

[David Robertson]

Mike and all,
I have my K3 tilted up and the P3 stays in place with no problem. The P3 is set 
on the left side of the top of the K3 to leave as many ventilation holes on the 
top of the K3 uncovered.

73
Dave KD1NA

Hi Dave,

You mentioned that you put the P3 on top of the K3. Do you have your K3
tilted up (using the bail) or is your K3 flat? If tilted, I was wondering if
the P3 stays put when you push the P3 buttons.

73,
Mike K2MK
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] P3

[David Robertson]

Everyone,

Last week I received my P3. All the parts were there and the kit was very well 
packaged. The P3 assembled very easily and worked from the first time I 
connected it to my K3. Upgrading the firmware was easy. Using my P3 with my 
computer has caused no apparent problems and I often use MIXW with digital 
modes. As a test I also have used my SDRIQ with the Spectraview software while 
the P3 is running with no problems . The only problems I have found is 
sometimes when operating VFO A and B at the same time while using the sub 
receiver and offsetting the center frequency the markers for the VFOs sometimes 
would get screwed up. A P3 reset seems to solve the problem. Really like the P3 
and it looks great on top of my K3.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [KIO2] sale

[David Robertson]

I have a KIO2 and K2 top cover for sale. I would prefer to sale them together. 
$80 plus shipping or best offer. The speaker and KIO2 have been tested and are 
in very good condition. Please contact me directly.
73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [K2] 10 meter power out

[David Robertson]

I am having problems finding information on a resistor value adjustment to 
bring the K2 power out on 10 meters to the correct value. If you have 
information please contact me directly.
Thanks in advance.
73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] P3 and Norton 360

[David Robertson]

Dick,  John and everyone,
I have a very small business maintaining computer systems for local small 
businesses and several private customers. In almost every situation involving 
Norton 360 resulted in either the inability to share printers over a network or 
false alarms with virus detection in known good applications. The solution was 
to uninstall the Norton 360 and install a different antiviral software. I have 
nothing against using Norton products, just stay away from 360. It was also my 
experience that Norton 360 was very difficult to uninstall. I actually had to 
go to the Norton web site in order to get the application to properly eliminate 
360 from the system.

Dave KD1NA

I'm the programmer of the Windows P3 Utility. It was virus scanned before it 
was offered on the Elecraft web site. Yours is the first report of any virus 
report.  Assuming you got the P3 Utility from the Elecraft FTP site or Elecraft 
web site then you are trying to install what I wrote. 

I don't have Norton Antivirus (earlier experiences led me away from it) but 
there are web sites that will scan a suspicious executable with a good number 
of virus detection tools. Perhaps one of those would help you decide who to 
trust here. I could find one, but from a trust standpoint it would be better 
for you to find it yourself or from someone else. 

I don't know what I could change to satisfy your Norton software. 

I can tell you that the P3 Utility includes an FTP client, and in order to do 
its intended function, it must be allowed to contact the Elecraft FTP site in 
order to copy P3 firmware from Elecraft's FTP server to your computer. All the 
Elecraft Utilities (K3, W2, K144XV and P3) include thus function. 

Dick, K6KR


Sent from my iPhone

On Aug 23, 2010, at 5:51 AM, John E. Reiser reis...@optonline.net wrote:

 Hello Elecrafters,
 
 I have been trying unsuccessfully to install the P3 Utility (Windows Version 
 1.3.7.22).   My virus protection program, Norton 360, will not allow it.  
 Norton pops up a message that a serious security breach has occurred.  Then 
 I'm asked to restart my computer.
 
 I tried the install a couple of times on each of two different computers, one 
 running Windows XP, and the other running Vista.  The results were exactly 
 the same.
 
 I know, I know, turn off the Norton 360.  But hold on a minute,  Norton 360 
 is just doing its job  Something is wrong with the way the latest P3 Utility 
 is coded.  Norton 360 has never before objected to any program installations 
 on these computers, including several versions of the K3 Utility.
 
 I am hoping that the programmer of the P3 Utility reads this and fixes the 
 problem with the code.
 
 I have received notification that my P3 is about to be shipped, so I need the 
 Utility to be working on my computer soon.
 
 Many thanks and 73,
 
 John, W2GW
 
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Kio2 for K2

[David Robertson]

I have one. I also have the K2 case top cover with speaker if you are 
interested that I would sell.
73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [P3] and HRD

[David Robertson]

Mike,
After reading your e-mail I tested HRD while my P3 was on and working. I had no 
problem with the HRD frequency readout or any DMC functions while the P3 was 
working. I have 0032 firmware installed. I also can use MIXW while the P3 is 
working with no problems with either. As a matter of information I am running 
Windows XP Prof. and am using a real serial connection (not USB to Serial).

73
Dave KD1NA  K3 #934

From: Michael Bornstein k6...@bak.rr.com
Subject: [Elecraft] Using a P3 and Ham Radio Deluxe
To: elecraft@mailman.qth.net
Message-ID: 9872c79f9c6e4c71bc1aa46e39516...@thinkpadt42
Content-Type: text/plain; charset=iso-8859-1

I am using HRD v.5 Beta and just turned on my P3.  With the P3 off, HRD works 
fine.  With it on, it simply can't read the frequency of my K3 and thus doesn't 
work.  Has anyone experienced this before, and is there a known fix?

Mike 
K6UMO
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Elecraft [P3] Shipping Notice

[David Robertson]

For all of you who are keeping track, yesterday I received an e-mail from 
elecraft informing me of the preperation of shipping of my P3. I order it on 
April 18.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Elecraft [P3] Idea

[David Robertson]

Bob,

I think your idea for fine tuning using the P3 is great. I hope you convayed 
your idea directly to Elecraft.

73
Dave KD1NA


P3 s/n 74 arrived today, went together nicely and works great. I'm
still getting used to it, but as a long-time LP-Pan/PowerSDR-IF user,
I was struck by one thing right away.

With PowerSDR-IF point and click tuning with the mouse is enhanced by
the fact that after pointing and clicking to change the K3 frequency,
one may immediately fine tune the signal with the mouse scroll
wheel. Especially for CW signals, this becomes second nature, a quick,
fluid series of actions - point, click, fine tune up or down to
zero-beat the signal (I do it by ear), using only one hand. This is
good because I can't always point with perfect accuracy, so am often
some tens or hundreds of Hz away from the desired signal. I set the
scroll wheel fine tuning rate to either 10 or 50 Hz per step.

With the P3, when I move the marker and tap the SELECT knob to QSY to
the frequency of some CW signal, rarely end up at zero-beat, often at
least 100-200 Hz away, sometimes more. So, in order to zero-beat I
must move a hand to the K3 and tune it in or press SPOT. I'd rather
finish the job using the hand already on the P3 SELECT knob, it's much
easier that way when it's done repeatedly (search and pounce etc). I
like panadaptor spans of 30 to 40 kHz, but even with narrower spans I
just can't consistently get close enough to zero-beat with a CW signal
on the P3 using the marker.

What I'd like to propose is a P3 fine tune QSY mode (optional,
controlled by menu setting), where the act of QSYing by tapping the
SELECT knob not only changes the K3 frequency, but also:

1. Clears the marker.
2. Puts the P3 into a mode where turning the select knob one way or
the other fine tunes the K3 at some rate like 200 Hz per revolution
or so (a fine rate, maybe adjustable).
3. Then, after any required fine tuning is complete, one more tap of
the select knob disables fine tuning, and it's business as usual.

The marker is cleared in step 1 because otherwise turning the SELECT
knob should continue to move the marker.

So the flow goes like this, with the proposed Fine Tune QSY mode
enabled in menu:

1. Tap MKR A to enable marker.
2. Turn SELECT knob to move marker onto desired signal.
3. Tap SELECT knob to QSY. The marker is cleared. Fine tuning of K3 is enabled.
4. Turn SELECT knob to fine tune (to zero-beat in the CW case, by ear
or using CWT indicator) the desired signal.
5. Tap SELECT knob once more to disable fine tuning, returning to normal state.

MKR B would get the same treatment. This would be perfectly general,
working for all modes, and less tiring when QSYing repeatedly using
the marker.


Bob NW8L


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Transformer

[David Robertson]

Vic,

If your transformer is a true 1 to 1 winding ratio the RMS voltage measurment 
of both the primary and secondary should be the same. In your case either the 
turns ratio are not 1 to 1 or you have a shorted turn in the primary winding. 
If it a shorted turn then even though the actual turns ratio is 1 to 1, if 
there is a shorted turn in the primary, the electrical turns ratio will not be 
the same.  If you connect the transformer with the secondary as the primary, 
your output voltage RMS will be lower.

73
Dave KD1NA

From: Vic K2VCO v...@rakefet.com
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Sun, August 1, 2010 5:24:04 PM
Subject: [Elecraft] Speaking of off-shore manufacture...

I just bought a transformer, primary and secondary both spec'd at 120v. My line 
voltage is 

119.5 -- the secondary voltage is -- get ready -- 148v! The only thing I can 
think of is 

that this is supposed to be the voltage under load. But I didn't think that 
transformers 

were spec'd that way, normally.

It's a good thing I'm not building a helicopter or something.
-- 
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco/
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 AM Split Operation

[David Robertson]

Everyone,

After using my K3 for almost 2 years now I recently started to operate on AM in 
the 80 meter band. I get very good reports and have fun using this mode from 
time to time. Since Elecraft got synchronous AM working I have found that the 
K3 really does a good job of copying AM signals and eliminates quite a bit of 
qrm.

The issue with sync AM is the K3 locks to the carrier frequency of the received 
signal. With amateur radio AM many operators are using vintage equipment thus 
are not on the same frequency (sometimes in access of 1 Khz off). If you 
transmit with the K3 after the station who just transmitted is off frequency 
your K3 will be off frequency too.

To eliminate the problem I set VFO A and B on the same and correct frequency 
and set the K3 to Split mode and to transmit from VFO B. Now when in Sync AM 
mode VFO A tracks the received AM signal but you always transmit on the proper 
frequency (VFO B).

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Elecraft W2

[David Robertson]

Everyone,

I am sending this to the forum as well as Elecraft support for everyone's 
information.

After receiving and assembling the W2 I decided to look inside the 1-2000 HF 
head to see what is there. Clearly impressed I reinstalled
the cover to the head and hooked it up to the station. when I first applied RF 
to the W2 head I had no power indication. The main unit booted up fine and all 
cables were properly connect according to the diagram on the case of the 
sensor. I decided to look again inside the sensor head and discovered that the 
removable part of the sensor head case had the label which could be reinstalled 
backward (which I did). I reassembled the sensor head case and hooked it up 
correctly and everything worked fine.

Elecraft, I would suggest that on future sensor head units the label should be 
placed on the outer shell of the case. That way if someone opens it up they 
cannot disturb the orientation of the label with regard to the internal PC 
board.

For those of you already owning a W2, I would suggest you mark the outer shell 
of the case of the sensor head with input and output labels or markings to be 
sure the removable part of the case is reinstalled properly.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 Firmware Update.

[David Robertson]

Phil,

It is very important that you be certain that whatever you use to get a RS232 
connection from your computer to the K3 is good.
Running HRD (Ham Radio Deluxe) is a good test. Have your K3  set at the highest 
baud rate it can do because that is what the K3 utility is going to use.

When upgrading your firmware do not do anything on the computer until the 
up-date is finished. Clicking around your Desktop or going to other 
applications in your computer during the up-date can result in a time slice in 
the process which can corrupt data.

Enjoy your K3!

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] [Elecraft K3] Serial port test

[David Robertson]

When Windows is started, The operating system checks the Device Manager to see 
what is set up on your system.  When it sees the serial ports (both real and 
USB to Serial) Windows exercises all the output lines of all the serial ports 
on the system to test them. This can result in a very quick keying of the K3 
(mine does it 3 times). If the K3 is in SSB or CW mode there will be no output 
but if you have a linear on during this time it will see a PTT input during the 
port test.

I always have the K3 (and linear) off when I reboot or turn on the computer. I 
also have the linear in stand by or off before I turn on the K3.

There are many rigs which will have a short transmit burst when powering up, K3 
included. Unless you are running an analog rig your rig stands a good chance of 
doing the same thing

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Elecraft K3 RS232

[David Robertson]

John,

It is the operating system, not the divice, that determines the RS232 port 
assigned.
You can change the port number assigned by opening Device Manager and selecting 
ports. Right click the serial port you want to change and go to Properties. in 
Properties go to Port Settings then click the Advanced button. in the lower 
right or that window is the port number. you can change it to whatever you like 
as long as the port number you choose is not already assigned. Afterward you 
have to setup your software to the new port setting.

73
Dave KD1NA




Does anyone know the nature of the K3 USB - COMM adapter sold by 
Elecraft? I cannot find anything in the Elecraft literature about it 
(other than the price, of course). For example:

Does it come with a pre-defined COMM port number?
A settable COMM port number between 1 and 10?
A settable COMM port number which may be anything (e.g. 17 or 25 or...).

How do driver software programs/suites such as DigiPan, FLDIGI, HRDeluxe 
recognize this adapter (if at all)? [Some software will not recognize 
ports above 10, while other programs are more relaxed about such things.]

Can the adapter be used for CAT control?

Any information would be useful.

John Ragle -- W1ZI



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Elecraft K2 Bifilar Windings

[David Robertson]

I used this trick to evenly twist wires together for bifilar winding;

1, Trim the wire so both are the same length.

2, Clamp one end of the wires in a vice or have someone hold them with a pair 
of pliers.

3, Clamp the other end of the wires into a chuck of an electric drill (variable 
speed).

4, While holding the wire tight start the drill at slow speed and the wires 
will twist evenly.

73
Dave KD1NA

Hi all,

Quick question about the bifilar windings on the bifilar transformers like
T6. How critical is the twist in the two wires? When I did T6, I was unable
to get a terribly consistent winding of the two wires together. Build manual
says they should cross over about every 1/2, but some parts of the wires
ended up a little tighter than that, others less. On some of the windings
when I wound the core, they more or less didn't pass over each other at all
for one or two windings (tho they were adjacent). 

I'm assuming this is probably not super critical, but just curious.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Elecraft SDR-IQ Spectraview Presentation

[David Robertson]

Steve in the SDR-IQ Spectraview videos on you-tube the averaging was set to 1 
which is much to fast as it shows all noise and signals in real time.

Changing the averaging setting to  5 or 10 will average out all peaks and give 
you a very good presentation of signals.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 Minitoring the IF out

[David Robertson]

I know I am a day late and a dollar short because I receive the forum mail in 
journal form but some were suggesting hooking up a transceiver to monitor the 
K3's IF out.

Please note, SOME RIGS WILL PUT OUT A SHORT BURST OF RF OUT WHEN POWERED UP. 
The safest thing to do is power up the IF monitoring rig first, then hook it up 
to the K3's IF port.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] RS232 Check

[David Robertson]

Roger,
A cheap and dirty way to check your RS232 and the serial cable is to jumper 
pins 2 and 3 of the K3 end of the serial cable (after it was removed from the 
K3). Open up hyper terminal in Windows (start, programs, accessories, 
communication). Select the proper com port and make sure you are connected, 
then type on your keyboard.  If you see what you type the com port is working.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Bird Wattmeters

[David Robertson]

Working in the electronic calibration field for some years I have found that 
any mechanical meter movement has it's greatest accuracy at full scale only. 
the meter movement's accuracy diminishes as you go down in scale. So if a Bird 
Wattmeter is calibrated for 5% accuracy at full scale then it's accuracy will 
be reduced as the meter deflection is reduced. That is why for greatest 
accuracy with a Bird Wattmeter measuring 9 watts (for example) should be using 
a 10 watt slug for greatest meter deflection.

Digital readouts will always have the accuracy of the measuring circuitry + or 
- one count of the least segnifigent digit of the instrument or computer 
readout no matter how much of the selected range scale is used. Having said 
that you will have the most accuracy when approaching the upper scale range ( 
example 90 watts on the 100 watt range and not 9 watts on the 100 watt range).

See Below:

73 and Happy New Year
Dave KD1NA

Bird wattmeter's, the spec is 5% OF THE 
FULL SCALE READING - and that is ONLY right after calibration.  That 
specification says that if a BIRD wattmeter has been recently calibrated 
and handled carefully afterwards, with a 100 watt slug, it can have an 
error of 5 watts - and that applies to *anywhere* on the scale.

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Soldering Coin Cell Batteries

[David Robertson]

Two times I directly soldered wires to coin cell batteries only to have a 
strange thing happen when replacing the spent batteries.

When replacing the spent battery I noticed a strange discoloration on the 
battery next to where it was soldered. It looked like some king of powder. when 
I touched the battery with my hot soldering iron to remove the wire there was a 
loud band and flash from that discolored area of the battery.
I now use the proper holder for the coin batteries and no problems.

73 and Merry Christmas
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] 3.44 Beta

[David Robertson]

Julian and All,

When operating in PSK mode and having the K3 in DATA A mode I had no RF output 
I noticed there was no ALC bars at all indicating no audio present from the 
computer. Turning up the K3 Mic gain (line in on data modes) there was no 
increased bar indication indicating no audio in from the computer. Returning 
the K3 mic gain (line input) to the correct value and switching the K3 mode to 
USB, then back to DATA A mode produced both the ALC bars and RF out.  When I 
transmit it takes about 15 to 20 seconds for the K3 to adjust the RF out to the 
correct value.

When I operate using the USB mode with 3.44 installed (requireing selection of 
line input and eliminating any compression) the K3 responces very well and only 
takes between 1 to 3 seconds to adjust power out.

During all of this no adjustments to the computer's audio out were made.

Reinstalling 3.42 firmware eliminates any problems in DATA A mode.

I will run more tests later as I have a ton of leaves to rake.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] RE Operating my K3

[David Robertson]

Larry,
If you don't have any audio cables connected between your line in/out on the K3 
and sound card plugs on your system, then you are getting your audio from the 
microphone on your laptop computer. Just speak into your laptop computer and 
you will see it in your software. The mic is picking up the audio from the K3's 
speaker.

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Elecraft P3

[David Robertson]

I like the idea of a dummy load in the P3. Would a lot more handy than a power 
supply in my case.
Dave KD1NA

Jim Wrote:

Message: 15
Date: Mon, 17 Aug 2009 14:19:30 -0500
From: Jim Hester jimhes...@hester.ws
Subject: [Elecraft] Heavy P3
To: elecraft@mailman.qth.net
Message-ID: 2ee731f0c6fd49e794a018971f6f4...@jim
Content-Type: text/plain; charset=us-ascii

To overcome the issue of a featherweight P3 Elecraft could provide an
internal 1 kw dummy load. 

 

Jim Hester

K5HTK

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 operation with a panadapter Display

[David Robertson]

I agree with VE7XF, I am using the SDR-IQ and SpectraVue. I also find While 
using the panadptor display I very seldom look at the K3's frequency's display

Snip
 I think you'll find that you watch it more than the
frequency display.

VE7XF
Snip

73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Elecraft P3 Display

[David Robertson]

One of the things that can be confusing is a very busy display. I think all 
that should be highlighted on the panadaptor display is the DSB bandwidth. That 
is what bandwidth you are receiving, not the crystal filter bandwidth.

73
Dave KD1NA

Message from Wayne:

However, the P3 will be aware of the K3's filter bandwidth and offset,  
so we can show a bracketed or otherwise highlighted area on the P3  
display that reflects the filter settings. We could show both the DSP  
and crystal bandwidth using different colors.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K2 IF Port

[David Robertson]

I just purchased and am using a SDR-IQ receiver with my K3 and running 
Spectra-Vue software with great success. I  would also like to use the SDR-IQ 
with my K2. Can someone kindly direct me to information regarding installing 
the IF Port on the K2?

Thanks and 73
Dave KD1NA
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Inductive Kick

[David Robertson]

Carl,
I completely agree with you. I have seen 12 volt DC relays produce as much as 
1000 volts peak or more when the current to the relay coil was terminated. This 
term was taught to me as Inductive Kick.

 When any coil of wire has DC current pass through it, a magnetic field is 
produced and magnetic flux builds up around the coil. This would be like 
stretching a spring. If you disconnect the current source, the magnetic field 
can quickly collapse causing the lines of magnetic flux to quickly cut 
accrossed the windings of the coil resulting in a high voltage spike. This 
would be equivalent to letting go of your stretched spring which can snap back 
at high speed resulting in possible damage.

Placing a diode in parallel with the coil with the cathode toward the positive 
side of the current source has no effect when current is normally applied. When 
you interrupt the current. the magnetic field collapses causing the coil to 
become a current source. The diode carries the current and reduces the voltage 
because of it's low impedance when switched on.  Remember the stretched spring. 
Having the diode in the circuit is like slowly releasing your spring instead of 
it snapping back.

Hope this helps.

73
Dave KD1NA


Don, seriously disagree about the magnitude of the kick. For years I taught a 
course on industrial installations and demo'ed the kick issue by soldering 
two bare wire to the coil of a small Potter and Brumfield ice cube 12 vdc 
relay. I would pick the biggest guy in the class to hold the wires while I 
touched them to a nine-volt transistor radio battery. And then watch as he 
would throw the relay across the room. A reverse diode would vastly reduce the 
effect.

Well, I got yelled at and was told Hey, Stupid (and stupid wasn't the word 
they used)! Put that on a storage scope to see what you're messing with. The 
scope showed a spike of 450 vdc! The diode reduced it to less than 75 vdc. 

The magnitude is due mainly to the large inductance of the coil, but until some 
measurements are taken, some caution is advised. The inductance of any coil 
inside a K2 or K3 is bound to be much smaller. But the phenomenon is the same.

73, Carl WC0V



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] RF Power

[David Robertson]

Greetings,

With all the information on calculating actual RF power and all these formulas 
being presented I fine it can be very confusing to people who don't have an 
electronic or mathematic background.  Being a technical instructor and 
self-made engineer I always find that a little explanation of the basics before 
springing a formula on someone really eliminates a lot of confusion.

So if those knowledgeable people will excuse my bandwidth let me explain a 
couple of things.

If you have a 110 volt 100 watt light bulb and you connect it to a 110 volt DC 
source (like a battery) it will dissipate 100 watts of power.

On AC power the voltage and current is always reversing polarity in a sine wave 
pattern at a given frequency (60 HZ for our power lines in North America).
Because AC is constantly changing, we must apply 110 volts RMS AC voltage (Root 
Mean Square). This strange RMS value is simply the actual peak AC voltage that 
is needed to produce the DC equivalent (100 watts) across the load or bulb or 
the equivalent of driving the load with DC voltage of 110 volts. I am not going 
to derive RMS here but I will tell you the value  RMS voltage = Peak 
voltage/Square root of 2.
Having said that you would have to have a peak value of 155.56 volts (or 311.27 
Peak to Peak (maximum positive to negative voltage swing on AC)) to dissipate 
100 watts of energy across the 100 watt load or bulb.

Now to RF power.

RF out of your rig is a sine wave (or better be or you got harmonic problems). 
If you look at your RF output with a scope you will see a peak to peak ac 
voltage which is being dissipated across your load (which is either your 
antenna or dummy load). If you use a RF probe that uses a diode to rectify the 
RF you will see a  peak voltage of the RF minus the voltage dropped across the 
diode in your probe.

Power (RMS) = E ( the RMS voltage) squared / The resistance R of the load (EG 
50 Ohms).

If you are using a scope you have to read the Peak to peak value and divide 
that by 2 for the peak value. Now to convert this value to an equivalent DC 
power value ( RMS) you must divide your peak value by the square root of 2 or 
1.414 ( this is plenty accurate for our calculations or you can use 
1.414213562373 and on and on if you are a accuracy type. Look at the example 
below.

200 volts peak to peak / 2 = 100 volts peak
100 volts peak / 1.414 = 70.72 volts RMS
Now Square the 70.72 value which will be ( E^2 ) 5110.31 and divide it by the 
load resistance ( 50 Ohms ) which is 100.02 watts.

If you use a probe, in order to have most accuracy, you should measure the 
voltage dropped across the diode in the probe. Silicon diodes (1N1458 ) drop 
about 0.6 volts. Germanium diodes ( 1n34 ) drop about 0.3 volts.

Power (RMS) = ((Probe reading + diode drop) divided by 1.414) squared, divided 
by the load resistance.

For simplicity, assume the diode drop is .3 volts. your measure 20 volts.  Add 
.3 volts ( diode drop ) for a total of 20.3 volts. this your peak value.
divide 20.3 volts by 1.414 for the RMS value which is  14.36 volts. Square 
14.36 for a value of 206.21 (E^2) and divide the squared value by the load 
resistance ( 50 Ohms ) (R) for a value of 4.124 watts.

If you don't know your diode drop and always use of 0.3 volts your power 
calculations will be within 2 to 3% unless you are trying to work in the 1 watt 
area or less.

I hope this helps.

Thanks and 73
Dave KD1NA
Ke #934
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 Time

[David Robertson]

Yesterday, I installed and tested David's K3 Timekeeper
 program for Windows XP.  It really works great and is very quick. You have to 
be sure your computer clock is right on before you execute the program.

73
Dave KD1NA




I've had a few requests for the K3 time updater I mentioned the other day.  So 
I've made it available for download.

Mac version (OS X 10.3 or later) http://sight.net/K3Time/K3Time.zip

Windows XP/VISTA (maybe 98 not sure) http://sight.net/K3Time/K3TimeWin.zip

It's very easy to use and should be self-explanatory.

Select the appropriate serial port and baud rate the first time the program is 
run. It will remember these settings, so they need to be set only once. 

To display UTC time, click the UTC checkbox. To return to local time, uncheck 
it. Be sure the computer's system clock is set properly, and if applicable, set 
for Daylight Savings Time. 

To setup unattended updates, click the Auto-Update checkbox. This will 
automatically update the time on the K3 whenever the program is run (if the K3 
is attached and turned on, of course). When Auto-Update is enabled the program 
will automatically send the current system time to the K3 and then terminate 
after a 10 second delay. The delay allows time to turn off auto-update if need 
be. On Windows, you could use Scheduled Tasks in the control panel to set a 
time schedule for automatic execution of the program. On the Mac, a cron job 
(crontab) could be used. Cronnix is a nice Aqua frontend for cron if you're not 
familiar with creating crontabs from Terminal. I'm not sure how well the K3 
clock keeps time. I never use it. But I would think updating the time once a 
week or even once a month would be sufficient.

Click the Update K3 button to send the current system time to the K3.

That's all there is to it. The K3 time will not be *exact* with the computer, 
but it will get it close (within 0.5 second or so). I get the best results by 
clicking the update button as soon as a new second begins. Waiting until late 
into a second will result in the K3 being a second behind. Try clicking the 
update button several times until you get a good visual sync.

I've done very little testing of the Windows version. There could be bugs.

The program works by sending a sequence of CAT commands to the K3. Clicking 
Update K3 begins this sequence:

K31;   // Enables K3 extended mode
MN073; // Enters CONFIG:TIME Menu option
DS;// reads VFO A display area (now displaying TIME)

Parse DS; command response to get K3 HOUR, MINUTE and SECOND.

Determine computer HOUR, MINUTE and SECOND.

SWT13; // select SECOND

UP; or DN; until K3 SECOND = computer SECOND

SWT12; // select MINUTE

UP; or DN; until K3 MINUTE = computer MINUTE

SWT11; // select HOUR

UP; or DN; until K3 HOUR = computer HOUR

MN255; // exit menu

DONE..



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] Elecraft Carrying Cases

[David Robertson]

I have a K3 carrying case from Ken and his XYL and I love it.

One thing I did notice is it is soft throughout the case. I had my wife make a 
stiffener from plastic canvas used for knitting. this is available at craft 
stores. My wife cut the plastic canvas material the same size as the bottom of 
the carrying case and covered it with duck cloth which is soft.

With this stiffener on the bottom of the carrying case it provides a stable 
platform for the feet on the side of the k3 to set on and makes the sides 
stable to protect the K3 during transport.

Placing the K3 in the carrying case with the front panel facing up exposes all 
the coax/BNC connectors to damage when the case is set down on it's bottom.
With the stiffener installed in the case I feel the K3 is much safer with the 
K3's side feet down.Message:
73
Dave KD1NA




Date: Fri, 27 Feb 2009 06:54:31 -0600
From: Robert Naumann w...@w5ov.com
Subject: Re: [Elecraft] Elecraft Dust Covers, Carry Cases, and More
To: elecraft@mailman.qth.net
Message-ID: d191dffe49bb4273b3643180f24c1...@sonyrb42g
Content-Type: text/plain; charset=us-ascii

David,

If you were not transporting the K3 and merely keeping it safe on a shelf or
in a closet, you might want to place it with the handle towards the opening
so you could lift it out of the case somewhat more easily with the handle. 

While transporting it on the shoulder strap, you would want the front panel
facing up so you minimize the chances of smashing the delicate front panel
into something. Also, since the case is not rigid, the shoulder strap will
put pressure on the back and side panels as you carry it with the front
panel facing up - I would not want to put that pressure on any part of the
front panel.

So, when I travel with mine, it's front panel towards the opening - not the
handle.

73,

Bob W5OV



__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] PC Color Codes

[David Robertson]

Mike,

The universal color codes that PC's use on their cound card plugs are:
Red=Mic in
Green=Line out
Blue=Line in

This is assuming your sound card is set up for analog sound out and not 6 
channel digital.

On some sound cards there are additional plugs for rear speakers and digital 
output which you dont use for amateur radio connunications.

Old sound cards use lables (which are hard to read) and are all the same color 
plugs.

73
Dave KD1NA

Dave Wrote...but did apply all of the applicable hardware mods to date. So
hopefully the distortion is not hardware related but operator error in
driving my soundcard too hard.

Dave,
When I have my K3 Line Out plugged into my sound card rear microphone input
I see IMD products that I don't see when I plug into the Line In on the PC
soundcard. It is difficult for me to know which one I am plugged into
because I do not understand the color code on the PC sound input output
panel. The only way I make sure I am plugged into Line In is to bring up the
Windows microphone panel and mute all inputs but Line In and make sure that
I am getting a waterfall trace with only Line In selected. If no noise on
the waterfall I plug into another socket until I finally arrive at Line In.
I found this made quite a difference on my set up when I finally plugged
into the correct place.

Mike Scott__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] PSK On USB

[David Robertson]

Steve,
I use USB mode on PSK all the time and never had a problem with IMD. You have 
to make sure your compression (CMP) is set at zero (0) and keep the ALC between 
1 and 5 bars. I have operated this way with my K3 for as long as I have had it 
with no problems.

73
Dave KD1NA__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] SSB Mode

[David Robertson]

Graham and Everyone.

Every since I started using my K3 I never was comfirtable using data A mode for 
sound card digital communications. I have had lots of success using SSB mode.

73
Dave KD1NAJulian
Before you do anything drastic like looking for another radio, can I ask a
silly question or 2?
If the output power is flat across the AF spectrum when using ssb mode, why
doesn't everyone use it rather than DATA-A?
And since the output power is apparently so poorly controlled in DATA-A,
(with much higher power than called for) doesn't this actually give higher
rather than lower IMD?

__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] K3 Order

[David Robertson]

James,

Congratulations on ordering your K3!

It looks like your list of options are complete and you have been doing a lot 
of research. You will love your K3 when it is assembled.

Suggestions:

Be sure you have proper ESD protection when you assemble your K3 and follow the 
manual carefully. When assembling your K3 you might want to install the DSB 
board for the KRX3 and the KDVR3 Board before you install the front panel to 
the RF board. This will eliminate having to remove the front panel later.

If you are having the factory assemble your rig, open it up and carefully 
inspect your radio for any loose modules or parts that may have worked loose 
during shipping. Afterward run a complete test on the K3.

Have fun, you'll love this radio.

73
Dave KD1NA


I'm just about ready to place my order for a K3 (hopefully by tomorrow.yay!)

 

After some good discussions with list members, I think I've finally narrowed
down my option choices:

 

* K3/100 kit
* KAT3 ATU
* KBPF3 gen. cov. Module (1 unit, will be placed on SUB receiver)
* KDVR3 Dig. Voice recorder
* 500Hz 5 pole (2 units, one on each receiver)
* 6KHz filter (1 unit, will be placed on main RF board for ESSB
experimentation)
* 13KHz FM filter (2 units, one on each receiver)
* 40Hz filter matching for 2.7 and 500Hz filters
* KRX3 sub receiver
* KTCXO3-1 1ppm oscillator
* KXV3 xverter interface
* MH2 hand mic

 

I'm mostly an SSB guy, but do play around with PSK31 and RTTY.  I also like
to listen to shortwave broadcast stations.  The sub receiver will get the
gen coverage module plus a 13, 2.7, and 500 filter.  The 2.7 and 500 will be
matched for diversity receive.  The FM filter on the RF board will be used
for 10m repeaters, while the FM filter on the sub will be used for broadcast
reception.

 

I don't know if anyone here has heard of the AOR LA-390 active loop RX
antenna, but I'm thinking this might work well for my diversity experiments.
I'm space limited, and this thing can be kept on my window ledge.


__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html

[Elecraft] CW Tone

[David Robertson]

KEITH and fellow Elecrafters. It has been long known that certain individules 
have an inablity of decerning a difference in a pitch of tones that are 
somewhat close to the same frequincy. This is comminally refered to as tone 
deafness.Thats why CWT is real handy. There are many good CW operators that are 
tone deaf. They can hear the tones but if the tones are very close in frequency 
they cant tell one from the other other then sending speed and style.

An interesting fact. in a room with 150 people being tested for SONAR which 
several pair of tones were played. Some tone pairs were the same frequency, 
other tone pairs were offset from each other. You had to mark weather the tones 
were same, second tone high, or second tone low.
You had to get %85 right or you failed. When the test was completed there was 
only 10 of us that passed.

For us that are not aflicted with this minor disablity using your brain as a 
filter for the pitch you want can make for good cw copy. For people that are 
tone deaf, get you contacts using the CWT and good filtering. 

So Keith you are not alone but don't let that keep you from CW


73
DAVE KD1NA___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] K3 Stereo Connector

[David Robertson]

Bud,

Using a stereo connector from the line out of the computer to the line in of 
the K3 is okay. On the K3 line in connector, only the tip and sleeve has a 
connection. So you won't be shorting out the unused line output channel of the 
computer when using stereo cables.

73
Dave KD1NA___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] HRD and K3

[David Robertson]

Dave,

Using 1 serial port (a real one, not a USB) I have no problems using both HRD 
and Digital Master 780 at the same time on my K3. I have not tried this with a 
usb port yet but it may work.

First you have to be sure that your K3 is being controlled by HRD. Then you 
have to enable the IP Server (under the Tools Menu).

Go into DM 780, select radio and configure it for the K3. Afterward you might 
configure some of the control buttons and sliders for K3 controls.

Now after booting up HRD, then DM 780 one of the last things in the booting 
process is connection to the K3.  You will know this when you see the rig,s 
frequency displayed on DM780.

Hope this helps.
73
Dave KD1NA___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] E-MU 0202

[David Robertson]

Benson,

This sound module can be used for data mode programs on the K3 by using the 1/8 
jacks for line in and out on the K3.

It's best use is with the LP-Pan Module. This is for the panadapter display 
sold by K8LP, Telepost INC.

73
Dave KD1NA___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] Holding Screws

[David Robertson]

Mike,
When I was in the Navy. We used  a dark clay like material that was designed to 
seal cables when they passed through stuffing tubes in bulkheads (walls) or 
decks (floors) we called it Monkey sh*t.
This stuff was really good in holding screws on the screwdriver.

Nowadays I just magnetize the screwdriver and no longer need the clay.

73
Dave KD1NAHello list members,
I found a trick for holding small screws on the end of the screwdriver until 
you can get them into a tight place and started.   A small amount of electrical 
connector black seal mastic or putty shaped on the end of the driver takes up 
the gap enough to hold the screw until you get it thru the hole and started.  
Once pulled away, the putty stays on the screwdriver. 
Great for removing screws also.  Once in a while the mastic needs reshaped to 
the tip of the screwdriver to hold the screw securely.   It beats fingering the 
tiny screws into close spaces and hoping you dont drop it before you can get 
the screwdriver head on it. 
I was able to complete assembly on my K3/2170 today and didnt drop a single 
screw in the process, thanks to this method.  
Mike, AC5P  

___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] SB200 and K3

[David Robertson]

Harbach electronics (on internet) sells an SK200 for $27.00 that is easy to 
wier in to your amp and save distruction of your K3.

73
Dave KD1NA___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] K3 AF Mod

[David Robertson]

Ron,

Could you also send me a copy please.
Thanks.

Dave KD1NA

 
Hi Terry:

 

There's an application note that discusses how to get to the nuts holding
that panel as part of making a modification to the K3's AF amplifier. 

 

It was released a couple of  months  ago but searching all over the place I
cannot find it on the Elecraft Web site. 

 

I'll send you a copy directly. 

 

Ron AC7AC

 



___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] Firmware updates

[David Robertson]

I have downloaded many firmware files from Elecraft and found that downloading 
the beta files can be downloaded to any folder you desire using Windows 
Internet explorer. The non-beta firmware can only be downloaded in to the 
defult folder of the Elecraft installer program then later moved into the 
desired folder. You don't use the FTP site for non-beta firmware.

Installing both beta and non-beta firmware from my own folder is successful.

73
Dave KD1NA___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com

[Elecraft] KSB2

[David Robertson]

Curt,

I have 2 K2s and both have the KSB2 option.
First, Installing the SSB option and aligning it correctly doesn't reduce the 
K2's effectiveness in the CW mode, in fact it inhances it.
Second, This option opens the door to digital, SSB and sstv communications. 

If your K2 is stock CW then you have to remove the front panel to install the 
mic circuit components which is a pain but easily done.

You will be glad you install this option (even if you don't use SSB).

73
Dave KD1NACompleted K2 s/n 6424 a few months back, am thinking of adding a KSB2 
adapter kit I own.  I've seen several threads indicating that the SSB 
performance of the K2 with the adapter isn't very good.  Would adding this 
capability be worthwhile, or is leaving the K2 as CW only a better option?

73, Curt KB5JO 


___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a subscriber to post to the list.
Subscriber Info (Addr. Change, sub, unsub etc.):
 http://mailman.qth.net/mailman/listinfo/elecraft

Help: http://mailman.qth.net/subscribers.htm
Elecraft web page: http://www.elecraft.com