The data sheet for the display we're using specifies an LED lifetime of
10,000 hours minimum. I expect that's probably a conservative spec.
I've had mine on for thousands of hours so far with no noticeable change.
Alan N1AL
On 3/11/2013 10:42 PM, Ron D'Eau Claire wrote:
I'm not certain,
It is more than barely noticeable or you would not have mentioned it! I
too have noticed it and it really bugs me - very unlike the fine
auto-notch filters found on the Kenwood, Icom, and Yaesu rigs. The nay
sayers in this group will quickly tell you they don't hear it or give
excuses for its
Grant,
In a two transmitter - single band set-up, I use the ptt-in of the K3 to
mute the RX and, since it is in transmitting mode (key/mic not connected
ofcourse), the rx of the K3 is well protected.
73,
Arie PA3A
Op 12-3-2013 2:45, Grant Youngman schreef:
Is there a straightforward way to
Several months ago I did a commentary about autonotch noisy effect and
compare it with autonotch of cheapy radios. Responses I got was elecraft is
working on solution, but time have passed and all those months autonotch is
practically unusable. I'm sure that problem is only a aspect of software
Well truth be told I have been using my first K3/# 5299 since July of last
it was a basic model I bought used, then a fully loaded one K3/# 6730 I
bought the last 1/4 of 12.
I have not really noticed this all that much it does what I want it to
remove carriers most of all. But what do I know I
I love my K3. It's the best rig I've ever used, let alone owned. But the
auto notch is a weak point. Yes, it does find and eliminate carriers but it
introduces significant distortion. The manual notch is superb and does not
introduce any distortion so that's what I use. What is perplexing to
I posted this a bit over a year ago. Since some have come aboard since
then, here it is again.
73, de Nate
- Forwarded message from Nate Bargmann n...@n0nb.us -
Date: Thu, 26 Jan 2012 13:08:41 -0600
From: Nate Bargmann n...@n0nb.us
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft]
Hi Mark,
I had the exact same issue. It looks like pins in the manual are probably
shorter than they are in the latest kits. I put it on 2/3rds of the way and
it seemed to 'latch' in place. I finished assembling the kit and the fan was
working so I figured that was good enough.
Cheers,
Travis
I use autonotch all the time to mute a 2000hz heterodyne from an AM station
on 7220 while I operate 7222 LSB. I have never detected distortion. I do
detect distortion with aggressive noise blanker settings, but I believe
that's normal.
Monty K2DLJ
I posted this a bit over a year ago.
Had to forward this again due to the stupid reply to that assigned on
this list. :o(
On Tue, 12 Mar 2013 06:50:54 -0600, Gary McDuffie mcduf...@actcom.net
wrote:
On Tue, 12 Mar 2013 05:12:45 -0700 (PDT), k2np wrote:
I had the exact same issue. It looks like pins in the manual are probably
hello list
it is important to seal the quartz for grounding on the side X7 to X11, I
realize that I have welded on the top so the two earthed by quartz
Like this, or I leave it again?, this is a misunderstanding on my part in the
translation.
thank you for your opinion
73 , Christophe
Have recently noticed that the Auto-Spot feature on my K3 is not working as
well as it used to. With CWT on, if I manually tune the signal, to get a
blinking bar to show in the CW/Data Tuning Aid area of the S-Meter area, and
then Tap SPOT, it drives the signal off the tuning bar, whereas it
Christophe,
I sent 2 photos off list which show the proper grounding of X7 to X11.
Bend the wires into contact with the base of the crystal first to make
the soldering task easier.
73,
Don W3FPR
On 3/12/2013 9:48 AM, Christophe F8ACF-56 wrote:
hello list
it is important to seal the quartz
Distortion of the Auto Notch does exist, how bad depends on the strength of
the signal you are listening to.
This has a lot to do with whether the notch is inside or outside the
AGC circuit. I THINK on the K3 the auto notch is outside the AGC, and on the
upconversion rigs like a 7800 Icom,
I have seen this behavior as well, but only when the signal was very low
level. The vast majority of CW signals 'Spot' just fine for me. I'm
running the latest production firmware.
- 73 de Mike, K6MKF, W6NAG, NCDXC, Conway Reef 2012, K3-P3 Addict, Maui
-Original Message-
From:
Just love those metric sizes ;o)
73,
Tom
Amateur Radio Operator N5GE
ARRL Lifetime Member
QCWA Lifetime Member
On Mon, 11 Mar 2013 14:48:55 -0400, Joe Subich, W4TV
li...@subich.com wrote:
I had the same problem (and still have) with my old Heilsound
headset: the 3.5 mm plug doesn't fit
Hi Paul,
Just curious, what firmware version are you using? Is it the newest one?
There was a problem a while back, but the latest version(s) have fixed that.
73 de Jim - KE8G
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf
Chris,
Could you define private network?
My whole IT infrastructure is within a private network, RFC1918...
(most are)
--
Jeff KC9WSJ @ EN52WF
On Tue, 2013-03-12 at 08:46 +0700, Chris Wagner wrote:
Hello Seller,
In reference to your online placed ad on ( www.eham.net ) please
Net 5? Tor, maybe?
Matt Zilmer
Consultant
W. 909.394.6052
C. 909.730.6552
E. mzil...@magellangps.com
279 E. Arrow Hwy, San Dimas, CA. 91773
Pecca Fortiter
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jeff Schmidt
Most common desktop amps have a relay circuit that requires a transceiver to
short 12 VDC at 100 ma to key the amplifier on.
In the KX3 specs, the maximum amp relay current is stated to be 100 ma. Has
anyone keyed a desktop amp directly with a KX3 or is it recommended to use an
intermediate
Fred, I don't believe there is any reason to turn agc off anymore with the
newer firmware that allow for more threshold.
It is sometimes a advantage to ride the rf gain to make a signal more easy to
copy and the noise easier on the ears.
A quiet antenna helps too. My hy gain hytower
The continuous rating for the output fet 2N7002 is 115ma. So seems ok at 100ma.
Sent from my iPad
Chuck, KE9UW
(Jack for BMW motorcycles)
On Mar 12, 2013, at 11:07 AM, Bob Schumacher robertwschumac...@yahoo.com
wrote:
Most common desktop amps have a relay circuit that requires a transceiver
You might try installing a soft key kit in the amp if the voltage and
current requirements may be a bit high for the KX3.
73, Mike WA5POK
--
From: Bob Schumacher robertwschumac...@yahoo.com
Sent: Tuesday, March 12, 2013 12:06 PM
To:
The lumen output of LEDs decrease over time. The lifetime usually refers
to the time to some specified depreciation, such as 80% of original
output. Since 20% reduction in lumens is barely noticeable (eyes are not
linear), 10K hours has little to do with the useable life of the
product.
The SVGA hw has been stable since release.
73,
Eric
elecraft.com
On 3/11/2013 6:32 PM, Sam Morgan wrote:
I may have a chance to buy a P3 SVGA Board. It was bought shortly
after they were released, but never installed. I don't know if it has
a serial number or exactly when it was bought.
My
Anyone out there wants to part with a P3SVGA?
73 Tex
ka5y
--
View this message in context:
http://elecraft.365791.n2.nabble.com/WTB-P3SVGA-tp7571178.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
Elecraft
I need to connect a mono external speaker to the stereo SPKR jack on the
back panel. Cady's book lists a Radio Shack part to do this, however it
produces two mono outputs [R L] from the stereo jack, and is a little
to large physically for my installation.
Can I use a smaller 1-circuit
Fred,
Shoring the Left and Right channels of the speaker output together is
not a good thing to do.
Use a stereo plug and just wire the external speaker to tip and shell
and leave the ring open.
73,
Lyle KK7P
I need to connect a mono external speaker to the stereo SPKR jack on
the back
I built my KPA500 a couple of weeks ago. I also had the long pins but
didn't find anything about trimming them when I searched. I just went
ahead and pushed the connector down onto the pins as far as it would go
and left it, so I have some exposed pin between the bottom of the
connector and
Toby,
The notch is outside de AGC loop. Reason: there's a long story about IMD
and hardware AGC, which I won't quote here. Elecraft never came up with
a programmed DSP/hardware AGC solution that would dampen this effect a bit.
A pumping AGC is probably not considered an issue. To which I
Arie Pa3A wrote.
Luckily there are a lot of good features in the K3 to compensate my sad
feelings about this item.
I agree with you Arie, the K3 is a feature rich radio and I am well pleased
with it overall.
Toby W4CAK
OK, thanks! I'll replace the mono plug on the end of the speaker cable
with a stereo wired that way.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org
On 3/12/2013 11:42 AM, Lyle Johnson wrote:
Shoring the Left and Right channels of
I blew the switching FET with about 50 ma of current (12 volts) from a
DownEast Microwave transverter. Elecraft says it should have handled it, but
anyway, FWIW.
The FET has been replaced, and an intermediate switching transistor
installed in the switchbox for the several transverters. Now
Tighe, there should be no problem with leaving them as they are. That's just
a power connection to the fans, and as long as everything fit physically
leaving a little pin exposed is fine.
Several people reported this situation on the reflector some time ago.
Apparently some boards were
No, trimming is not required for the connector to make a good connection.
73,
Eric
elecraft.com
On 3/12/2013 11:54 AM, Tighe Kuykendall wrote:
I built my KPA500 a couple of weeks ago. I also had the long pins but
didn't find anything about trimming them when I searched. I just went
ahead
On Tue, 12 Mar 2013 13:39:46 -0700, Ron D'Eau Claire wrote:
Tighe, there should be no problem with leaving them as they are. That's just
a power connection to the fans, and as long as everything fit physically
leaving a little pin exposed is fine.
Several people reported this situation on
Would one of you kind folks with a KX3 and the KXPD3 paddles installed
provide me with the measurement from the end of the KX3 to the body of
the paddles for each side?
Also, does anyone have an idea about how big (diameter/length) the
bundle of cables that come in the KX3-PCKT Accessory
I believe the issue you describe is the same one I am in the process of
correcting in that the power connection for the fan would not seat properly. I
called Elecraft and spoke with a tech and we determined that the pins had an
over run of solder down into the channel blocking full seating of
On Tue, 12 Mar 2013 13:51:46 -0700 (PDT), Bill Wiehe wrote:
I believe the issue you describe is the same one I am in the process of
correcting in that the power connection for the fan would not seat properly.
I called Elecraft and spoke with a tech and we determined that the pins had
an
As a follow-up, I see a number of response that suggest all is OK if if the
connector does not seat all the way down. Just to clarify, mine did not ever
seat a few centimeters and the connection was clearly unreliable.
Bill-W0BBI
From: Bill Wiehe
Just had to mention that the K3's noise blanker set at t1-1 is excellent
for taking out a distant electric fence without causing any apparent
degradation to the received signal. It was a pleasant surprise, as most
noise blankers that I have experienced cause all kinds of receive problems.
A very simple device I use for amp switching is a reed relay from Radio
Shack (part # 275-233) that I power with a 9 volt battery. I have been
using this device for years on may rigs and it works fine.
Of course there are no solid state devices used on a well designed
circuit board, nor a
My two cents..
I find that I run in T1-7 for a lot of the power line noise I hear on 2 meters.
Absolute fantastic job at removing the noise and not degrading the weak signal
that is normally received on SSB nets 300-400 miles out. Every once in a while
I engage the DSP NB on the first or second
2 3/16 inches on the left and 3 7/16 inches on the right
cables are about 44 inches long and 1/8 inch in diameter each except the serial
cable and the mic cable are almost 3/16 inch each
Chuck, KE9UW
AARL, CCA
Lionel Trains TCA, LCCA, LRRC
aka Jack, BMW Motorcycles BMWRA, BMWMOA #224
Thanks Chuck - very much appreciated!
73,
Dave W8FGU
On 03/12/2013 05:44 PM, hawley, charles j jr wrote:
2 3/16 inches on the left and 3 7/16 inches on the right
cables are about 44 inches long and 1/8 inch in diameter each except the
serial cable and the mic cable are almost 3/16 inch each
Not only is the noise blanker outstanding but the noise reduction also works
extremely well. It can significantly reduce the noise without major
alterations in the audio unlike most other such circuits I have seen in
other radios which either don't do much of anything or butcher the audio to
the
Jim,
The FET shouldn't have had any problem with 50 mA. It's a 2N7002 and is
rated for 115 mA continuous and 800 mA pulsed, with 60V max voltage when
off. One possibility is that the load being switched was inductive
(like a relay), and the FET's voltage rating was exceeded when the relay
The 2N7002 has an internal diode for any inductive collapse.
Sent from my iPad
Chuck, KE9UW
(Jack for BMW motorcycles)
On Mar 12, 2013, at 6:58 PM, Rich Heineck ric...@frontier.com wrote:
Jim,
The FET shouldn't have had any problem with 50 mA. It's a 2N7002 and is
rated for 115 mA
Joe, you may be right, but the description of the Revision C mod says, This
modification protects the K3's audio amplifier if either speaker output is
connected to a short circuit or very low impedance load.
Since I've made this mod, I'd like (hope) to know that this protects the audio
amp.
But why push the limits? Using a stereo plug will eliminate the
possibility of a future failure initiated by the shorted output. A
short on the output *does* stress the components even if they can handle it.
Changing to a stereo plug should not be difficult for any ham who can
solder - or
Isn't the 2N7002's internal diode arranged to conduct if the drain is
negative with respect to the source, but the inductive spike from low
side switching will be positive with respect to the drain?
What you really want for this situation where the relay is presumably
inaccessible and hence
There's a drain-source diode, but it doesn't protect the 2N7002 in this
configuration. Typical sink-to-ground relay driver circuits put a diode
across the coil so it keeps the switched side of the relay from going
way above the supply voltage when the relay is turned off.
Rich AC7MA
On
I had the same problem the other day. Instead of driving the signal to the
center of CWT it was shifted way off the signal. I noticed that my VFO was on
course tune so I switched to fine tune and now the SPOT feature worked just
fine. It seems that the VFO must be in fine tuning mode for
Don, Joe --
Don,
You missed my point. of confusion, Joe said open circuit.
Yep, I do use a stereo plug, thus I have an right channel open circuit when I
connect an external
speaker.
But there seems to be something else that Joe is warning against other than
open circuit. Referring to
Barry,
I can see Mod Rev C protecting against speaker ringing or the sudden
removal of a low impedance load by damping the inductive kick but it
certainly does not protect against sustained high levels into a very
low impedance (or short circuit) load. 470 Ohm resistors in parallel
with a short
The DEM transverters also have the diode snubber.
So things remain a mystery, hopefully never to repeat.
73 - Jim K8MR
In a message dated 3/12/2013 8:02:08 P.M. Eastern Daylight Time,
c-haw...@illinois.edu writes:
The 2N7002 has an internal diode for any inductive collapse.
In my case the FET failed somewhat gradually. I made several QSOs by
momentarily turning off the transverter power. When I turned it back on, it
came
up in receive mode. Then I'd transmit, power cycle the transverter to
return to receive, and repeat.
After several such QSOs power cycling
I am up to page 63 of the manual which is the alignment and test part 2.
Upon initial testing there is a problem with all of the Bank 1 push
buttons. There is no effect on any of the left push buttons. The right push
buttons on Bank 2 work except for the mode switch and rate / lock switch.
All
I too have a new noise at my no noise qth. I'm not using the dsp NB but the
I.F. Noise blanker set to MED4 and totally takes it off the speakers AND off
the s meter.
Good show, Elecraft.
Mike R
Play me some fiddle, but no stinkin' violin!
Amateur/Ham Radio KE5GBC
HF Echolink mobile
Given the advances in direct RF sampled SDRs (currently available QS1R, soon to
be released Flex-6000, etc.), Elecraft must be quietly working on on an RF
sampled K4 SDR. Maybe we will see an anouncement in May at Dayton? I am
wondering if I should take the leap with the Flex or wait for
Glenn,
For the time being, ignore the discrepancies in the Control Board
voltage readings, those are of no consequence to your problem.
Do check Front Panel RP1 to make certain it is installed the 'right way
around'. That is one of the few K2 Rpaks that is orientation
sensitive. The dot or
Speculation..? Visalia, not Dayton. I think I like the idea of a variable
page, touch screen interface. .not sure about how successful such an
implementation might be.
Dick - KA5KKT
_
Given the advances in direct RF sampled SDRs (currently available QS1R, soon
to be released
But will it make my coffee?
74
Gary
Sent from my Galaxy SIII
On 13/03/2013 2:16 PM, Edward Dickinson III softb...@windstream.net
wrote:
Speculation..? Visalia, not Dayton. I think I like the idea of a variable
page, touch screen interface. .not sure about how successful such an
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