[Elecraft] TX/RX on vfo B with SUB rx?
Is it possible to use vfo B to set both the tx and rx freq? I've got an idea about using the IF output for mult. searching, which would require using VFO B to set tx/rx using the sub rx.Alternately can I get to the IF output from the SUB RX? Mark n2qt __ 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] K3 ALS 600
the K3 is also good in that you can select the power output to be band specific. (under CONFIG). So if your amp needs 50w on 15 and 35w on 80, set it once and don't worry about it anymore. Mark n2qt - Original Message - From: Jim Brown j...@audiosystemsgroup.com To: Elecraft@mailman.qth.net Sent: Tuesday, November 24, 2009 1:01 PM Subject: Re: [Elecraft] K3 ALS 600 On Tue, 24 Nov 2009 10:59:23 -0600, Steven Pituch wrote: I do not use ALC with my ALS600 and my K3. You're doing it right. Modern power amps do not need ALC except as belt and suspenders protection when something goes wrong (by modern, I mean those made in the last 30 years). The right way to drive a power amp is to control output by setting drive level from the transceiver (in this case, the K3) AND carefully tune the power amp for maximum output as read on a meter in line with the antenna. The combination of these actions minimizes distortion products from the power amp. Setting the transceiver to more than the needed drive power and depending on ALC to reduce the drive often causes the amp to be overdriven, so it produces distortion (splatter, harmonics). Not nice. 73, Jim K9YC __ 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 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] Special offer
when I selected 3 or more handbooks with the USPO Book rate shipping the shipping cost went to $999.00! Mark n2qt - Original Message - From: Paul Kirley pkir...@fuse.net To: elecraft@mailman.qth.net Sent: Wednesday, November 25, 2009 4:00 PM Subject: Re: [Elecraft] Special offer Because I had been considering a new Owner's Manual for some time, I chose to bundle that with a Handbook. The combined shipping wasn't a lot more than the Manual alone, which is obviously available only from Elecraft. 73, Paul W8TM __ 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 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] power out variation using FSK-D
I notice that there is a slight power output variation between the two FSK tones (as seen on an external meter, there isn't enough resolution on the K3's meter to see it). Is this a result of filter ripple or is something else at work here? (since not AFSK not EQ or sound card settings). Mark n2qt __ 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 SubRx active while transmitting?
At one time there was some talk (assuming the internal isolation was high enough) to allow the subrx to remain active, listening on it's own antenna, while the K3 was in transmit. Are there any new developments along this line? Mark n2qt __ 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] KANT3 ?
This is the board you would have replaced in your K3 when upgrading to the KAT3 antenna tuner. I'm looking for one to try something on, (not all or my ideas work so don't want to sacrifice the one in the rig) so if you've got one, let me know what it would take to ship it to 24551. Mark n2qt __ 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] FSK power
I've become a firm believer in air flow during rtty contests. I use a 24 volt 5 inch muffin fan blowing air down into the K3 across the PA fins. I run the fan with about 12 volts which cuts the noise down somewhat. Looking at the PA temp while doing this, it's hard to get it up much over 35C during a contest. Mark n2qt NR4C wrote: Now, one more. How much power can I safely use with FSK? I have made several contacts so far at about 50 watts. Can I use more? there is a RTTY contest this weekend, and I don't want to damage the radio, but don't want to start off with a weak signal if I can do better. __ 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 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] FSK power
Necessary no, but I am eager for my K3 to have a long and productive life, and cooler semiconductors are always better.I put some plastic press on feet on the bottom of the fan I use, and a screen on the top to keep fingers out so no changes to the K3 cover. Feeling good is not a bad reason to do things. 73, Mark - Original Message - From: Guy Olinger K2AV To: Mark n2qt Cc: elecraft@mailman.qth.net Sent: Thursday, September 23, 2010 4:03 PM Subject: Re: [Elecraft] FSK power The K3 has the best heat dissipation scheme I have ever seen in a 100W transceiver. Though Wayne and co. don't want to hear about us doing it, some of us have done the brick on key thing at 110 watts for a long time, and watched the temp level out in the 50's. Fan comes on, goes to high, and blows a lot of reasonably warm air out. Yes, you CAN muck up the top cover and blow more air in if that makes you feel good. But the prevailing opinion will be that's unnecessary. It would not be accurate to tell anyone that a top fan is necessary. 73, Guy. On Thu, Sep 23, 2010 at 3:10 PM, Mark n2qt n...@verizon.net wrote: I've become a firm believer in air flow during rtty contests. I use a 24 volt 5 inch muffin fan blowing air down into the K3 across the PA fins. I run the fan with about 12 volts which cuts the noise down somewhat. Looking at the PA temp while doing this, it's hard to get it up much over 35C during a contest. Mark n2qt NR4C wrote: Now, one more. How much power can I safely use with FSK? I have made several contacts so far at about 50 watts. Can I use more? there is a RTTY contest this weekend, and I don't want to damage the radio, but don't want to start off with a weak signal if I can do better. __ 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 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 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] unequal power output per tone in FSK
I know this has been discussed before and the fix is on the list but after 24 hours of watching the watt meter bounce on the two fsk tones, is the solution getting closer? Mark n2qt (using 5 pole filters which I understand accentuates this) __ 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] clear RIT upon tuning in K3?
Is there a way to zero the RIT control when tuning the main tuning knob? During the rtty contest I would ride the RIT control while running and then forget to zero it when changing to SP. I've looked through the K3 manual and programmers reference along with looking through the N1MM manual (If there was a macro that would execute when changing from RUN to SP I could do it that way). Mark n2qt __ 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] clear RIT upon tuning in K3?
yes I've got that in my TU macro in N1MM, but it seems I manage to tune RIT
and then wander off
to SP without logging someone just before.
WIth low power I seem to be giving up on running quite a bit!
Mark n2qt
-Original Message-
From: Guy Olinger K2AV
Sent: Monday, January 10, 2011 4:13 PM
To: Wayne Burdick
Cc: elecraft@mailman.qth.net ; Mark n2qt
Subject: Re: [Elecraft] clear RIT upon tuning in K3?
The N1MM {CLEARRIT} macro sends the correct K3 command if the rig is
declared as a K3. My run F3 string in N1MM is ...
TU * {CLEARRIT}
... without the quotes and those are braces, not paretheses.
73, Guy.
On Mon, Jan 10, 2011 at 3:55 PM, Wayne Burdick n...@elecraft.com wrote:
RIT CLR can be done either from the front panel switch, an RC;
command, or an SWT53; switch emulation command, even while you're
transmitting.
73,
Wayne
N6KR
On Jan 10, 2011, at 12:13 PM, Mark n2qt wrote:
Is there a way to zero the RIT control when tuning the main tuning
knob?
During the rtty contest I would ride the RIT control while running
and then
forget to
zero it when changing to SP.
I've looked through the K3 manual and programmers reference along with
looking
through the N1MM manual (If there was a macro that would execute when
changing
from RUN to SP I could do it that way).
Mark n2qt
__
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[Elecraft] Yamaha CM500 in stock at Sam Ash for $45 inc shipping
after the 62nd recommendation for this headset I have finally ordered one. http://www.samash.com/p/Yamaha_CM500-Headphones-with-Microphone_-49969751 Mark n2qt __ 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] CM500
nice write up on sound card microphones (like in the CM500) at http://www.hobby-hour.com/electronics/computer_microphone.php My CM500 just came today, haven't confirmed anything yet. Mark n2qt -Original Message- From: Jim Brown Sent: Thursday, January 13, 2011 1:37 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] CM500 On 1/13/2011 8:24 AM, Tommy Alderman wrote: SOMEWHERE in my pile of papers I have a CM500 headset owners paper! Can someone please tell me what the tip and ring connection are for the microphone? I assume the base is the ground connection. Audio appears between tip and shell. As nearly as I have been able to determine, the ring contact is not used at all. Tip also needs a resistor (about 5K ohms) to V+. Turning on bias in the K3 does this internally, so no resistor is needed. I had to add the resistor in an adapter that I built to use with an FT1000MP at PJ4. The bias resistor is also built into the mic input of most modern computer sound cards. The CM500 works just fine in my Thinkpads. 73, Jim K9YC __ 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 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] loss of main RX
A couple of times during the CQ160 contest, I would lose rx audio on the main rx. The subrx was unaffected. Since I had a LPPan panadapter hooked up I could tell that it wasn't just the audio output as the panadapter display was also clear of signals. (I was using N1MM logger through a microham Station Master). Everything came back to life without any heroic measures (although I'm not sure what I did to make it work. I sure did fumble with the controls in a random, hectic fashion). I did not check transmit while it was in this state. I will pay more attention during future (if any) occurrences but figured I'd report this in case others have seen it. Mark n2qt __ 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] txinh timing??
I've looked but can't find the spec on how long after after initiating TXINH is the K3 transmitter at zero power? (I'm working on an so2r interface which can take away an antenna from the low priority rig even if it was transmitting. ) It looks like the TXINH is a polled input and may be a bit a slow for my application. Mark n2qt __ 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] txinh timing?? Measured
well I went and measured it. Max time for RF carrier to zero after asserting TxInh (TxInh Hi) was just under 10ms minimum time was about 8ms. So since I was set up to measure things, I measured the time for carrier to decay (in Data mode) after removing PTT and got pretty much the same times. Mark n2qt -Original Message- From: Mark n2qt Sent: Wednesday, April 25, 2012 5:05 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] txinh timing?? I've looked but can't find the spec on how long after after initiating TXINH is the K3 transmitter at zero power? (I'm working on an so2r interface which can take away an antenna from the low priority rig even if it was transmitting. ) It looks like the TXINH is a polled input and may be a bit a slow for my application. Mark n2qt __ 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 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] txinh timing?? Measured
It's a little bit quicker, full power in about 7-8ms. if anyone is interested in the pictures I took of the scope, email me directly and I'll send you a copy. (about 800k each) Mark n2qt -Original Message- From: Igor Sokolov Sent: Thursday, April 26, 2012 2:02 PM To: Mark n2qt ; Elecraft@mailman.qth.net Subject: Re: [Elecraft] txinh timing?? Measured Thank you Mark. I was looking for this information. Well.. it is very slow indeed. I thought it is much faster. Could you possibly measure how long does it take for the signal to appear at the output after TX Inh set to low? 73, Igor UA9CDC well I went and measured it. Max time for RF carrier to zero after asserting TxInh (TxInh Hi) was just under 10ms minimum time was about 8ms. So since I was set up to measure things, I measured the time for carrier to decay (in Data mode) after removing PTT and got pretty much the same times. Mark n2qt -Original Message- From: Mark n2qt Sent: Wednesday, April 25, 2012 5:05 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] txinh timing?? I've looked but can't find the spec on how long after after initiating TXINH is the K3 transmitter at zero power? (I'm working on an so2r interface which can take away an antenna from the low priority rig even if it was transmitting. ) It looks like the TXINH is a polled input and may be a bit a slow for my application. Mark n2qt __ 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 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 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] txinh timing
some have asked about the timing of the onset of carrier (rather than full power output) and the rise time of the carrier after release of TxInh. There is a bit of jitter in the onset of carrier that changes the onset from about 2.5 ms to 4 ms. Rise time to 100% is about 5 ms. (wish I had one of the neat digital storage scopes so I could just read these numbers with the markers instead of squinting at a picture). Mark n2qt __ 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] K3 ANT 1-2 isolation
with isolation numbers like this perhaps there is hope for duplex mode, with transmitting on one band with the subrx enabled and listening on another?? Hopefully! Mark n2qt -Original Message- From: Mark - G4AXX Sent: Saturday, April 28, 2012 11:27 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 ANT 1-2 isolation The isolation between ANT 1 and ANT 2 varies from -76dB at 1.8MHz to -46dB at 50MHz. This is measured with a signal generator, using the K3 S-meter, with ANT 2, AUX RF and RX ANT IN terminated in 50 Ohms. http://elecraft.365791.n2.nabble.com/file/n7509068/ANT1-2_leakage.jpg The isolation between AUX RF and ANT 1/2 is 95dB (1-30MHz), rising to -70dB (52MHz). This was measured with an N2PK VNA. I have tried to dress the unscreened wires from ANT 1 2 to the ATU in a way to minimise coupling, but the coupling is dominated by the capacitance of relays K18 K19. Using ANT1/2 for Diversity reception means the receivers are never truly independent. There is likely to be more coupling inside the K3 than can usually be achieved by physical separation of the antennas. Operating Diversity reception with the SUB RX fed from the AUX RF BNC input is the way to go. 73 Mark G4AXX -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-ANT-1-2-isolation-tp7500652p7509068.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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 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] PR-6 issue when QRO
I may just have been lucky so far, but with a DEM 6M preamp and converted SB220, everyone has been getting along with the default 8ms delay in the K3 and a stock SB220 relay. Be aware that relay switching speeds are specified without a snubber diode connected. Adding the diode can greatly extend the release time of a relay. With the limited testing I have done, it seems not all relays act in the same way (i.e. some go much slower, others not so much). In the Dow-key design guide they indicate A transient suppression diode across the actuating coil can increase the release time of an electromechanical switch by as much as 100 times. There are ways around this with the use of zeners instead of just a diode. Mark n2qt -Original Message- From: Don Wilhelm Sent: Sunday, April 29, 2012 10:11 AM To: Gregg Marco W6IZT Cc: 'elecraft' Subject: Re: [Elecraft] PR-6 issue when QRO Gregg, Unless you have changed the open frame relay in the SB-220, it will take at least 15 ms to switch and be clear of the contact bounce. I would suggest you change the stock relay for something faster. 73, Don W3FPR On 4/29/2012 8:55 AM, Gregg Marco W6IZT wrote: I use my K3 on 6 meters with a concerted SB-220. When using the PR6 connected to the KXV3 as intended and using the amp, the GaAs FET is destroyed immediately. My work around was to employ an external TR relay on the K3 to switch TX RX, connecting the PR6 to the RX side of the relay and to the RX input of the KXV3.Using this arrangement has worked fine for the past few years. With E skip season approaching I thought that I would try to resolve this problem and get rid of the extra RF plumbing. My initial thought was the TR relay in the amp might be too slow and RF was being reflected back into the K3 during the transition from TX to RX. After looking at the K3 block diagram I doubt that this is the case as the PR-6 should be switched out of the circuit well before any RF is present at the output. For reference the TR relays in the amp are spec'ed at 8 msec to switch and the K3 is set at 8 msec TX delay, which I believe is the default. __ 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 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] RCS-12 or Station Master for K3?
I've been real happy with the MH Station Master. It's go enough outputs to control bandpass filters for SO2R as well as doing the normal antenna selection duties. You can select more than one output for a given selection so you can do binary encoding to your relays and save on wires if you need to. It also allows you do reconfigure on the fly rather than making up new diode matrixes like I used to do. A bit of a learning curve, but then again what doesn't have one anymore? I control a dunestar 600 and a combination of dowkey transfer relays and a couple of ameritron RCS8s with mine. Mark n2qt -Original Message- From: Robby.VY2SS Sent: Monday, May 21, 2012 7:39 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] RCS-12 or Station Master for K3? I have been using the Elecraft KRC2 for remote switching for several years. It drives a MicroHAM 10 port switch. The switch is well made in a heavy casting and can be used in the shack or on your tower. I have never had the slightest problem with it. I built the KRC2 as a kit (easy) and the only problem came after a minor lightning event which prevented me from communicating with the KRC2 proccessor to upgrade the S/W. Elecraft responded immediately with a new chip with the latest software already installed. The cable interface with the switch box allows one or more bands to use a single antenna. I am an avid contester and it is great to have one less thing to remember on a band change. 73, -Robby VY2SS -- View this message in context: http://elecraft.365791.n2.nabble.com/RCS-12-or-Station-Master-for-K3-tp7556171p7556199.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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 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] Listening on k3 subreceiver while transmitting
The possibility of duplex operation comes up from time to time, dating back to Wayne's email in 2009 (copied below) indicating it 'could be possible' on different bands using the sub-rx. The last update (also below, from 2/12) was that there was of yet no progress. Maybe with the KAT500, KX3 releases the Elecraft guys may be looking for something different to work on and pick this??? This is also of interest to the satellite guys too of course. There were some independent measurements of isolation that were copied to the reflector that seemed to show the isolation may be robust enough to hold out hope. Mark n2qt -Original Message- From: Wayne Burdick Sent: Friday, October 16, 2009 10:32 AM To: Bill W4ZV Cc: elecraft@... Subject: Re: [Elecraft] K3: SO2R-in-a-box It may be possible to do full duplex with the sub receiver on a different band and antenna from main, since it's very well-shielded. I'll give this a try. Some firmware changes will be required. 73, Wayne From: Gary Surrency Sent: Tuesday, February 07, 2012 12:46 PM To: Mark n2qt Subject: N2QT Re: k3 subrx Hi Mark, Sorry. Nothing more has been done on that. Wayne is deep into KX3 development. -- 73, Gary AB7MY -Original Message- From: Gary Slagel Sent: Monday, June 04, 2012 4:40 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Listening on k3 subreceiver while transmitting Hi All, I'm looking at getting the subreceiver for my k3. I'm trying to figure out if I can listen on the subreceiver while transmitting. For instance, while contesting, this would let me look for multipliers on the subreceiver while running with the main receiver. Is this possible? Thanks, Gary Slagel KT0A __ 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 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] more on Astrons
Astrons were also heavily used in 2 way commercial market. Lots of good information at http://www.repeater-builder.com/astron/astron-index.html If you don't take their specs as gospel and derate them a bit, they last forever (or at least till the next lightning strike). Even then the parts are easy to get and the supplies easy to fix. Mark n2qt __ 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 1MW cal failure (SOlved)
After downloading the latest firmware to my K3 I decided to redo the TX CALIBRATION. Although the 5 and 50 watt cals went fine it failed on the 1 MW calibration. This was using K3 Utility 1.4.10.11 After updating to K3 Util 1.12.3.28 everything went through easily. Hope this saves someone else some time. Mark n2qt __ 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] any one use a KX3 for the RTTY contest?
Looking for comments on how well a KX3 does in a rtty contest. I am thinking of using a kx3 in a SO2R setup at 100w with the hopefully soon to arrive KPA100, but wondered how it stacks up. I'm currently using K3's and FT1000 MKV. (that Sherwood report sure got me thinking). Mark n2qt aka WE4M __ 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 power output problems
On a new to me K3, I am having problems with power output below 15M. For example the power output on 80 maxed out at 30 watts. (good swr etc., no alarms, voltage input is good etc.). So figured it was a TX gain issue so set up recalibrate it. The 5 W calibration goes fine on 160, but fails on 80 with the following dialog Starting 5 watt calibration Calibrating at 1.900 MHz Calibrating at 3.750 MHz SWR 3.7-1 is too high for calibration Verify that a dummy load is attached to AN2; (and yes the dummy load was connected to AN2, I had previously tried it on AN1 with the same results.) If I then transmit manually, the SWR indicated is 1:1 and I can adjust power up to the same 30W indicated previously. So, the TX calibrate complains of high SWR, but manually cannot replicate it. Any ideas (really, really) welcome. Unit does have the AntTuner which is set to bypass (and it looks like the calibrate routine also does this.) Mark n2qt __ 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] K3 power output problems
one more bit of info. If I use the tuner into 50 ohms it finds a match but when I manually transmit the swr through the tuner is high, for example 4.4:1 on 40. Bypassing the tuner gives the 1:1 expected with the dummy load, although at 30 some watts. I really think there is a floating cable ground somewhere in there. Mark n2qt -Original Message- From: Mark n2qt Sent: Saturday, September 22, 2012 1:44 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] K3 power output problems On a new to me K3, I am having problems with power output below 15M. For example the power output on 80 maxed out at 30 watts. (good swr etc., no alarms, voltage input is good etc.). So figured it was a TX gain issue so set up recalibrate it. The 5 W calibration goes fine on 160, but fails on 80 with the following dialog Starting 5 watt calibration Calibrating at 1.900 MHz Calibrating at 3.750 MHz SWR 3.7-1 is too high for calibration Verify that a dummy load is attached to AN2; (and yes the dummy load was connected to AN2, I had previously tried it on AN1 with the same results.) If I then transmit manually, the SWR indicated is 1:1 and I can adjust power up to the same 30W indicated previously. So, the TX calibrate complains of high SWR, but manually cannot replicate it. Any ideas (really, really) welcome. Unit does have the AntTuner which is set to bypass (and it looks like the calibrate routine also does this.) Mark n2qt __ 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 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] K3 power output problems
thanks for the suggestion John. I tried it but it didn't allow calibration to occur. However I noticed that after the ATU tuned the 50 ohm load the rig showed high SWR (4.1:1 or so) when I manually keyed it. Also on the bands the power output it good, the Current drawn is shown as 2.3 Amps, which would be pretty spectacular. I did confirm the ~100W output power on a W2 wattmeter. So something is definitely up Mark n2qt -Original Message- From: Dr John Farmer Sent: Saturday, September 22, 2012 2:01 PM To: Mark n2qt Subject: Re: [Elecraft] K3 power output problems Hi Mark, Just read your posting. I had some quirky things happen with my K3 with the tuner in Bypass mode. I needed to set the bypass LC settings in the tuner to remedy them. Try the following: Switch back to ANT 1. Attach 50 ohm dummy load to ANT 1. Engage the ATU Tune the ATU in to the dummy load on every band sequentially from 160 to 6m Put ATU back into bypass mode and then retry the tx gain calibration routine. Hope that helps. 73 John VK7JB Sent from my iPhone On 23/09/2012, at 3:44, Mark n2qt n...@verizon.net wrote: On a new to me K3, I am having problems with power output below 15M. For example the power output on 80 maxed out at 30 watts. (good swr etc., no alarms, voltage input is good etc.). So figured it was a TX gain issue so set up recalibrate it. The 5 W calibration goes fine on 160, but fails on 80 with the following dialog Starting 5 watt calibration Calibrating at 1.900 MHz Calibrating at 3.750 MHz SWR 3.7-1 is too high for calibration Verify that a dummy load is attached to AN2; (and yes the dummy load was connected to AN2, I had previously tried it on AN1 with the same results.) If I then transmit manually, the SWR indicated is 1:1 and I can adjust power up to the same 30W indicated previously. So, the TX calibrate complains of high SWR, but manually cannot replicate it. Any ideas (really, really) welcome. Unit does have the AntTuner which is set to bypass (and it looks like the calibrate routine also does this.) Mark n2qt __ 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 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] K3 power output problems (partially fixed!)
As an update, (for all those following this thread with bated breath) It looks like the problem of being unable to get full power out on the bands below 17M, and the inability to do a TXGain calibration, was due to some issue with the configuration of the ATU. I set ATU to not installed and then back to installed and power output came back up. In addition when the ATU is enabled and used to tune the 50 ohm load, the SWR after tuning is 1:1. (those who are following this will remember that originally tuning made the SWR worse). My idea of a loose connection appears to be wrong. Now, the remaining problem is that the Current Display does not indicate the current actually drawn. The display 'saturates' somewhere around 3 amps or so. (It appears to read sensibly up to that level, and then flattens out as power is turned up). I'll ask Elecraft Tech support for guidance on this one I'm hoping to use the rig in the upcoming CQWW, so if there anything amiss, it's sure to show up then. Mark n2qt -Original Message- From: Ian White GM3SEK Sent: Sunday, September 23, 2012 4:54 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 power output problems Don Wilhelm wrote: There is one possibility of a loose connection in the ground path for the antenna connectors. At the upper right-rear corner of the K3 there is a 2D connector, a long screw and a standoff is fastened to the threads of that long screw. The tightness of that standoff is important to the ground path to the antenna connectors. See page 22 of the K3 Assembly manual. To tighten the standoff, you will have to first loosen the screw that goes into the inside end of that standoff, then tighten the standoff with pliers (or better yet, a 3/16 inch wrench). Once you have tightened the standoff against the 2D connector, you can tighten the screw again. That slender pillar is the main return path for an ampere or more of RF current flowing between the KAT3 board and the rear panel sockets. As someone whose design instincts were developed at VHF, where all RF ground paths must be short, broad and direct, I didn't feel comfortable about that corner of the K3. Yes, we know that it works and it's good enough for HF. But in these days of compulsory EMC testing and microscopically detailed product reviews, even HF designers are coming to realise that bending the rules for good RF grounding will eat into the margins of performance, spurious signal rejection and stability. RF grounding of the KAT3 board is also far too dependent on the tightness of the screws at each end of the pillar and the cleanness of all the contact surfaces. That ground return path can be much improved by connecting the mounting screw of J1 directly to the corner of the KAT3 board, using two solder tags that are overlapped and soldered directly together. My K3 doesn't necessarily work any better, but it does satisfy the instincts of an old VHF hound :-) -- 73 from Ian GM3SEK http://www.ifwtech.co.uk/g3sek __ 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 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] K3 SHUTDOWN.
I run a 5inch sized 24V fan powered from 12 volts or so during RTTY contests. I watch the PA temperature, but don't normally see it going above the upper 40's no matter how hard I push it at the 100 watt level. The added fan blows in through the top vents as the normal fans pull air out. With rubber feet on the fan, and a screen to keep wires and fingers out, it works really well for me. Mark n2qt -Original Message- From: Lyle Johnson Sent: Saturday, September 29, 2012 4:52 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 SHUTDOWN. In the end, it is a THERMAL problem. __ 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] [K3] Subreceiver IF output
For another approach look at http://www.pvrc.org/Newsletters/jun12.pdf and in the files section of the Yahoo K3 user group. This uses a small preamp from Clifton Labs to provide isolation and some gain if desired. Mark n2qt -Original Message- From: Thomas Horsten Sent: Saturday, October 06, 2012 9:56 PM To: iain macdonnell - N6ML Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K3] Subreceiver IF output Thanks Ian, and with complete instructions too. Now I just wonder how it compares to the KXV3A output - I know there was a mod that made the IF signal on the main receiver much stronger, I'm not sure if a similar one applies to the sub as well. 73, Thomas M0TRN On 7 October 2012 02:50, iain macdonnell - N6ML a...@dseven.org wrote: It's been done. A Google search for krx3 if output found: http://www.kl7uw.com/LINRAD.htm 73, ~iain / N6ML __ 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 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] typo in RXSBNL instructions?
In the optional enhancement section, for rx shift = 8 it indicates that FL1 will be flashing but then in the next section says Make sure FL3 is still selected shouldn't this be FL1 since we are offset? Mark n2qt (brand new KX3, got it and built it yesterday so I could be confused) __ 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] Bugs? (KX3 AFSK A, and RXSBNL)
I am getting used to my new KX3 and have what look like bugs to me. Using the latest software 1.23/.99 AFSK A is supposed to be LSB (and actually indicates LSB on the screen) but when decoding the audio with a sound card based decoder I must invert the tones to get good decoding. FSK D audio is in the correct sense (not needing REV on the external decoder so I think I’m right). IN RXSBNL instructions In the optional enhancement section, for rx shift = 8 it indicates that FL1 will be flashing but then in the next section says Make sure FL3 is still selected shouldn't this be FL1 since we are offset? Under future enhancements, it would be GREAT if external FSK could be implemented, using the CW key input perhaps??? Mark n2qt __ 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] anyone using AFSK A with KX3?
I am using it happily, but the tones seem inverted (as if the rig is in USB instead of the standard LSB). Selecting ALT sideband does nothing to change this, although the LCB icon does show up. Please let me know if I'm the only one??? Mark n2qt (Even inverted, it was fun getting the brand new rig on for a bit and working the world during the JARTS contest at 5W) __ 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 in WAE RTTY
I used my new KX3 (SN 2282) in the recent WAE RTTY test as part of an SO3R setup with 2 K3s, and wanted to record my impressions. The KX3 at 5W was driving an amp to 100 watts, and contributed 298 q's to my total. The KX3 had the per band sideband nulling and the roofing filter. I took the headphone output and ran it through transformers, one channel directly to the computer sound card, and the other through a separate audio amp, to my headphones. This way, the decoder audio could be at a fixed level but still allow me to use the external amp to adjust the headphone level. The KX3 was set for AFSK A and of course I used AFSK from the sound card, which was also transformer isolated, and run to the MIC input. RX I/Q was run into another sound card to provide a spectral display using CW Skimmer (yes I know it doesn't decode RTTY, but I just like the way it looks). AFSK A uses a center frequency of 1Khz, which is good since I used high tones on the other two rigs, and it helps me to discriminate between what's going on between the rigs. Now AFSK A purports to use LSB, but is actually inverted, so I had to use the REV setting on MMTTY to get things to work. (this is on the list at Elecraft). It also meant manual fine tuning by ear or scope was reversed. Also AFSK A only allows the twin peaking filter, which I found I really don't like in a contest. Band noise is peaked up at the tone frequencies and I found that that made it harder to tell when a weak station was calling on a noisy band. I used MMTTY in non AFC mode, and found that the tuning was more touchy. 2-Tone, running in it's native AFC and AGC mode was better at decoding. Also in AFSK mode, it's necessary to set an offset in the N1MM logging software to get the frequency to net up with FSK packet spots. As others have noted, having a band scope is a great thing, and with the KX3 is pretty easy to implement. However, I found that with all the extra stuff in the shack going, the 'zero freq' portion of the display got what seemed to be progressively noisier. I did have transformer isolation on the I/Q output but more attention is needed. I also saw that on 40M, where my antenna is uncomfortably close to the house, that there was noise induced on the I/Q output. I don't think this was radiated on the transmitter, but will need to investigate more. I did not use the 8Khz offset in the KX3 to move the noise from 0 since I wanted the roofing filter action for the contest congestion. Also the image rejection of CW Skimmer degraded significantly during the contest. I think this was because I left the it in learn mode, and it was learning from the transmit signal sent out over the RX I/Q as well as very strong local signals (including my own 40M harmonic as heard on 20M). Turning off learning mode would help this I'm sure. I had a fan blowing on the back of the kx3, and PA temperature rise was minimal, toping out in the mid 40's, even with the extended duty cycle of exchanging QTCs. As others have noted, the KX3 should be mounted securely or it wants to wander off when pressing buttons. So how's it compare to a K3? I/O is limited (no separate fixed audio out, FSK in, or band outputs) RIT is harder to use (and reset) And if the rig isn't mounted well, it moves when you hit the buttons. Fewer options for center frequency setting In AFSK A, only twin peaking filter available No FSK transmit No fixed audio output No band dependent power out setting (my amp was pretty flat so not an issue for me) I don’t think I missed any contacts due to using the KX3 vs. a K3. The limiting factor on receive was more the clicks and splatter from other stations rather than any receiver performance. I do think the K3 is better, but not by leaps and bounds. Hi SIG detect seems to be more sensitive to an on frequency signal, rather than the K3 responding to on/off frequency signals equally. Wishes Add FSK transmit (Elecraft says the I/O is wrong to allow this) Allow other rx filtering selections Fix the sideband selection in AFSK A Mute the RX I/Q output on TX SO not bad for a 2 pound trail ready radio! Mark n2qt/we4m __ 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 overcurrent/over temp shut down?
How is PA overtemp/current displayed on the K3? During the WAE rtty contest at least twice I noticed that the rig was in TX, but there was no power output. I did not see any warning message on the rig's display. Next time called upon transmit was fine. However, later on I did get an unsolicited shut down on the same rig. PA temperatures did make it into the low 50's sending QTCs. When a fault occurs, to the point of shutting off output power, is the fault display fleeting enough that I could have missed it? (I was running SO2R and not watching the affected radio). Mark n2qt/we4m __ 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] frequency creep on cw
still learning my way around the KX3 but figure this will bite someone else. I have the KX3 set up for keying from N1MM logger in preparation for CQWW. In chasing PT0S on 15cw I notice my receive frequency went down every time I called (which running 5w and a big pile up I did a lot). Went to MENU and found the MIC BTN was on but not able to change since I was in CW mode. Changed to SSB, put MIC BTN off and all was stable. Mark n2qt (working the KX3 and letting the K3 cool off after SS) __ 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] 2b. Re: sub rx on during transmit?
I believe the operation describe is possible now. You can receive on another band with the sub rx, with both receivers muted during transmit. I also listen for 6M openings while working on the HF bands. Of course you should use the AUX antenna port connected to a 6M antenna for the subrx. Your external antenna switching would then be responsible to connect the 6M antenna to the main antenna port if you choose to transmit on 6. What I am hoping for is the ability to tune the subrx (on either the same or other band) while transmitting, I realize I will need to watch the isolation between the antennas, but if the radio itself would handle this, I could use the sub rx to tune the band for other stations while I am transmitting. Mark n2qt (still hopefull) Posted by: hb9ari hb9...@bluewin.ch asga732000 Date: Sat Jan 21, 2012 1:01 am ((PST)) Hi Mark, I've asked for this configuration to Elecraft some time ago, before ordering a sub-rx for my K3,but no answer. The idea was to monitor the 6m band, during my lower bands JT65 activity. I was not asking to receive during transmit (...). Loss of 6m RX just during transmit JT65 frames was not a problem! The goal was to switch on 6m TX/RX when some opening was present. I thought that it should be possible... my error. Good luck Mark. __ 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] K3: SO2R-in-a-box
Any update on this? Would be interested in doing testing if that's helpful. Mark n2qt -Original Message- From: Wayne Burdick Sent: Friday, October 16, 2009 10:32 AM To: Bill W4ZV Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3: SO2R-in-a-box It may be possible to do full duplex with the sub receiver on a different band and antenna from main, since it's very well-shielded. I'll give this a try. Some firmware changes will be required. 73, Wayne http://www.elecraft.com On Oct 16, 2009, at 7:21 AM, Bill W4ZV btipp...@alum.mit.edu wrote: Brian Machesney wrote: Call me stubborn, but I believe that it should be possible to *make* the K3 and a logging program work together as SO2R-in-a-box. This probably involves external, switched bandpass filters, might involve an external antenna switch and/or applying a context swtich via the logging program, but it seems that it must be possible - and a good idea. Has anyone made this work? Is anyone working on it? Is anyone interested in starting up a new group (off this reflector) to work up ideas? True SO2R means you can listen on the second receiver while transmitting on the main radio receiver. That can NEVER happen with the K3 because both receivers are muted while transmitting. SO2V (Single Op 2 VFOs) is possible with N1MM as N1EU describes below: http://n1eu.com/K3/K3_subrx.htm#SO2V_Operation 73, Bill -- View this message in context: http://n2.nabble.com/K3-SO2R-in-a-box-tp3835713p3835807.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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 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 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] K3/KPA500 (now FSK tone imbalance)
I was also one of the 'unequal fsk tone' reporters. However, with the arrival of a W2 I also confirmed that the two tones are set to the same level as determined by measuring each tone separately (and statically). Therefore I've concluded the flickering power output when running diddles on rtty must be caused by transients in the tone to tone switching (ie non zero crossing switching or the like) Mark n2qt -Original Message- From: Ken K3IU Sent: Wednesday, March 07, 2012 2:18 PM To: Brian Alsop ; Elecraft Reflector Subject: Re: [Elecraft] K3/KPA500 Hi Brian: Just want to give you a datapoint regarding your comment about different power output for the 2 FSK frequencies. I just tested my K3 (#202) using a jumper across the FSK input on the ACC connector and using my Diamond SX-200 power meter I can not see any difference in power at all on the two frequencies. I checked at low power (5W), mid power (60 W) and 100W. The needle on the meter doesn't move when I key the FSK input. It is not my intent to start an argument about this, but just thought you might want to know my observations. 73, Ken K3IU ~~~ On 3/7/2012 8:34 AM, Brian Alsop wrote: I wonder if anybody else is observing this. The first few CW characters do not develop full power as indicated by the LED power displays. My gut feeling is that LED power displays should be fast enough to capture the true power for even the first couple characters. Switching to the PK HOLD option doesn't show this even for a single dit. Some time constants are evidently built into the metering. I wonder if Elecraft has built in time constants to confirm to the old FCC specs for meters which are intended to read PEP power? I do wish the K3 FSK output powers for the two frequencies would be equalized one of these days. 73 de Brian/K3KO - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1424 / Virus Database: 2113/4856 - Release Date: 03/07/12 __ 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 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 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] Duplex operation on K3
I'm also interested in this operation (although for a different application). Here's the email exchange so far, looks like maybe after the kx3 if we keep the question alive. Mark n2qt copied messages below From: Gary Surrency Sent: Tuesday, February 07, 2012 12:46 PM To: Mark n2qt Subject: N2QT Re: k3 subrx Hi Mark, Sorry. Nothing more has been done on that. Wayne is deep into KX3 development. -- 73, Gary AB7MY = supp...@elecraft.com Elecraft Technical Support On 2/7/2012 10:28 AM, Mark n2qt wrote: a long time back (see below) Wayne mentioned it might be possible to use the subrx while transmitting on another band. Did anything come of this. I can test or try things if that would help. Mark n2qt -Original Message- From: Wayne Burdick Sent: Friday, October 16, 2009 10:32 AM To: Bill W4ZV Cc: elecraft at mailman.qth.net Subject: Re: [Elecraft] K3: SO2R-in-a-box It may be possible to do full duplex with the sub receiver on a different band and antenna from main, since it's very well-shielded. I'll give this a try. Some firmware changes will be required. 73, Wayne -Original Message- From: William Hein Sent: Monday, March 19, 2012 11:01 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Duplex operation on K3 Is there a way to get the K3 to operate duplex (Tx on one band while rx on another)? For the K3 with second rx, of course. I would like to operate mode A satellite with AO-7 (tx on 2m and rx on 10m). I'd also monitor a second band while contesting with my K3 without the expense of buying a second K3 when the one I have already has two rxs. My antennas are well separated and I have extensive external band pass filtering for contest use. 73 Bill AA7XT __ 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 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 LONG delay in TX after TXINH removed
I have TXinh sent to my K3 to ensure it doesn't transmit during initial keying or during antenna relay switching. In my setup TXINH is removed about 8 ms after the K3 is keyed. However, it looks like it takes the k3 about 450 ms or so after TXINH is removed for the k3 to make power output. This of course really messes up my cw output as it kills the first character. It also occurs with manual Tune from the front panel or with other modes, so not just on CW. I don't see menu items that would cause this. Anyone else seeing this? I 'think' this used to work, but I haven't tried old firmware to verify if my memory is correct. Since the 160 contest is tonight, I'll just pull the TXinh and live on the edge. Mark n2qt __ 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 LONG delay in TX after TXINH removed (solved)
My TxInh circuit diode or'd various inputs together. What I did not do is put a resistor to ground after the diodes. The K3 TxInh input does not have a pull down, and has a high enough impedance that there is an appreciable time delay before the TxInh coasts down to where it allows the K3 to transmit. Adding the resistor makes everything ok again... Mark n2qt -Original Message- From: Mark n2qt Sent: Friday, January 25, 2013 5:23 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] K3 LONG delay in TX after TXINH removed I have TXinh sent to my K3 to ensure it doesn't transmit during initial keying or during antenna relay switching. In my setup TXINH is removed about 8 ms after the K3 is keyed. However, it looks like it takes the k3 about 450 ms or so after TXINH is removed for the k3 to make power output. This of course really messes up my cw output as it kills the first character. It also occurs with manual Tune from the front panel or with other modes, so not just on CW. I don't see menu items that would cause this. Anyone else seeing this? I 'think' this used to work, but I haven't tried old firmware to verify if my memory is correct. Since the 160 contest is tonight, I'll just pull the TXinh and live on the edge. Mark n2qt __ 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 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] K3 Reduced BW FSK
I had missed that this wasn’t discussed on this reflector, so first a little history At the end of December, on the RTTY reflector, Andy K0SM/2 produced measurements showing that the use of FSK, which had been the ‘gold standard’ for generating RTTY was actually not as spectrally efficient as correctly adjusted, shaped AFSK generated RTTY. This was shown in his write-up posted at http://www.frontiernet.net/~aflowers/k3rtty/k3rtty.html Note that this does NOT indicate that there was any sort of problem with the K3, just that there was a chance to be better. Other manufacturers also have this same chance to improve. A little later, Ed, W0YK, also known as P49X in many contests, announced that he had successfully used experimental DSP firmware from Elecraft in the BARTG rtty contest. “The K3 DSP firmware engineer coded a wave-shaping filter that narrows the transmit bandwidth similar to what their AFSK filter provides. The resulting spectrum image looks like the better, i.e., narrowest, of the images in K0SM's recent work.” Elecraft then allowed Ed to share this firmware with others who were interested in trying it, which is how I got it. As anyone who was in the WPX RTTY contest this past weekend knows, anything that can help reduce the unnecessary interference from overly wide transmissions is more than welcome. It is great that Elecraft has reacted so quickly to this opportunity. (Would we expect anything less from these guys??) Mark N2QT/WE4M From: Stephen Prior Sent: Wednesday, February 13, 2013 3:22 AM To: Mark Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 Reduced BW FSK Mark, You will have to enlighten us (well, me anyway) - just what pre-beta software are you referring to? 73 Stephen G4SJP On 13 February 2013 04:10, Mark n...@verizon.net wrote: Just a report that I used the pre beta low bandwidth fsk software on both k3s during the WPX RTTY contest. Made over 1900 low power contacts, with no apparent problems (As expected). As close as some stations felt comfortable operating next to me, it looks like it helps. With the ever increasing popularity of rtty contesting, improvements like this helps us all. Mark. N2QT/WE4M __ 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 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] unequal tone power output in FSK
This was a thread a while back, (the twist in the tones is induced by passband ripple in the filters, worse with 5 poles) and there was a possibility of a software update to flatten the tones. I know it doesn't really affect anything, but watching the LEDs on the W2 flutter just doesn't seem right. Mark n2qt __ 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+K3 in SO2R
I've used a kx3 as the third radio in a so3r configuration. I was low power but did not see any additional issues with using a kx3 rather than a k3. You may find it necessary to use the 8 kHz offset to reduce the zero if bleed through if you don't have enough inter band isolation. Mark. N2QT Message: 10 Date: Tue, 25 Mar 2014 07:53:26 -0700 From: Jeff Kinzli N6GQ j...@n6gq.com To: Elecraft Reflector elecraft@mailman.qth.net Subject: [Elecraft] KX3+K3 in SO2R Message-ID: CALfN8=bfg9g9pqauybbympv7ricej7qbu7vxljv+zfohmgp...@mail.gmail.com Content-Type: text/plain; charset=UTF-8 Hello friends, I'm curious who has tried an SO2R setup of K3 as primary, and KX3 as secondary radios in a SO2R set up. If you did, did you find anything out of the ordinary with respect to the KX3 being the secondary radio? More prone to interference from the primary radio (or vise-versa)? My guess is that it should be just fine, but if someone's already walked in those shoes and worked through things I'd love to hear them. My plan is to use the K3+Acom amp as primary, KX3+100w amp as secondary, using the YCCC SO2R box as the controller. This will be for a DXpedition for CQWW SSB in October. Thanks __ 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] Redoing TxGain k3
I have two K3s, SN in the 3XXX and 4XXX range. I notice that over time I can see a leading edge spike on first character of cw. If I redo TxGain calibration it goes away. It seems like I need to redo the TxGain cal about every year. Is this what others see? Mark. N2QT __ 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 false SWR indication with SSB
My k3 flashes a higher swr indication with ssb voice peaks than with a steady carrier. If using an antenna with 1:1 SWR the bar graph flashes the first segment. If swr is 1.5:1 all the segments illuminate on voice peaks, as if swr was greater than 3:1. To reduce the uncertainty introduced by my antennas, I connected a 50 ohm load after an external tuner so I could create the 1.5:1 SWR, and got the same results. I assume this is a benign problem and likely caused by the non simultaneous sampling of FWD and REV power by the CPU. However, if no one else sees this I'll do some more checking. FW 4.81/2.83 and TX Gain Cal done recently. Mark. N2QT __ 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] CR/LF, SP, or something better for RTTY
After the discussion here and on the RTTY reflector I checked with AA5AU and W0YK (aka P49X) as they are the go to guys for anything related to rtty contesting. Here's what they said: AA5AU CR/LF before and space after W0YK CR/LF before and space after (there are some building block macros that don't have the leading CR/LF as they need to seemlessly stack) VE3NEA, who is the author of RTTYSKimmer came up with another possibility with a dynamic way of freezing the data input window based on the mouse movement. He has a demo of this approach as well as its source code. This program simulates an RTTY client program that prints received characters and allows you to click on the words in the scrolling window. To see this in action, please download the freezer demo from (http://www.dxatlas.com/private/freezer.zip) extract Freezer.exe from the zip file, and play with it. While it doesn't have real callsigns you can quickly get the sense of how it operates. If this gets picked up by the various contest logging programs, it is maybe a way to make the discussion of cr/lf moot. Mark n2qt __ 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] Kat500 as wattmeter?
Yes I'd found that. What I was hoping for is a readout in watts, with a bargraph, like that provided with the W2 or the remote app for the KPA500. Mark. N2QT On Jan 23, 2015, at 8:05 PM, Don Wilhelm w3...@embarqmail.com wrote: Mark, The OPERATE tab of the KAT500 Utility shows the VFWD and VRFL as well as the VSWR. It also shows the Bypass VSWR. Perhaps that is what you are looking for. 73, Don W3FPR On 1/23/2015 6:36 PM, Mark N2qt via Elecraft wrote: Is there an app to take the fwd/ref information from a KAT500 to display on a computer monitor? Mark. N2QT __ 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] Kat500 as wattmeter?
Is there an app to take the fwd/ref information from a KAT500 to display on a computer monitor? Mark. N2QT __ 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] Windows 8.1 Tablet Power (update)
I had asked about how to power a Unbranded (Best Buy) Windows 8.1 tablet while using the one micro USB for data as well as charging. I received several good suggestions but have found another solution. I bought a DIgi Anywhere USB/5, which allows connecting to 5 USB ports over Ethernet. It won't remote things such as sound cards but I was interested in serial ports which it does well. The tablet is therefore powered using the micro USB port and connectivity is via my local network using the tablets built in wireless to get to the serial adapters via this new device. Buying one of these thing new would be price prohibitive, but one was found on eBay (sans power supply) for a 'good price'. Mark. N2QT __ 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] Windows 8.1 tablet power
Actually the issue is the tablet is able to supply power to external devices, which must be disabled when the unit is being charged from an external source. Best I can tell in some devices The direction of power is either negotiated by a digital message upon connection of an external device or by shorting or opening the data lines when the unit is to be charged. It looks like Dell tablets can operate with specific adapters but there is no guarantee this would work on another brand (and lots of review comments saying it doesn't). This was all a surprise to me, I just figured I could hook things up and go. Mark. N2QT On Jul 7, 2015, at 11:50 AM, Tom tom...@videotron.ca wrote: Hmm, that's interesting. Have you tried a powered USB hub? I would think that should work. 73 Tom va2fsq.com Sent from BlueMail On Jul 7, 2015, at 10:57 AM, Mark N2QT via Elecraft elecraft@mailman.qth.net wrote: I bought a win 8.1 (not RT) tablet from Cowboom for $59, hoping to interface it using its micro USB port. However the USB port is the only way to provide power to the thing, and battery life is such I'd like to leave it on charge while operating, while not losing the USB port data functionality. The unit is sold by Best Buy under the Unbranded name. Anyone have luck powering such a tablet without losing the USB data capability? Mark. N2QT 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 tom...@videotron.ca __ 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] Windows 8.1 tablet power
I bought a win 8.1 (not RT) tablet from Cowboom for $59, hoping to interface it using its micro USB port. However the USB port is the only way to provide power to the thing, and battery life is such I'd like to leave it on charge while operating, while not losing the USB port data functionality. The unit is sold by Best Buy under the Unbranded name. Anyone have luck powering such a tablet without losing the USB data capability? Mark. N2QT __ 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] Alternate W2 display on PC?
I'm trying integrate a couple of W2 wattmeters into an SO2R setup. As screen space is at a premium I was wondering if there was a way to display a smaller bar graph without all the extra stuff. (The old Wavenode power meters used to do this, but I lost a parallel port to talk to talk to them with the latest PC upgrade). Mark. N2QT __ 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] Predistortion linearization
Since a discussion of K3 TX IMD routinely shows up, you may be interested in the the predistortion linearization part of the ANAN 100D review in the Oct. QST. Third order products went from 38db (which isn't so bad on its own, but look at the 5th order which were worse!) down to -50dbc. A great way to improve the performance of 12v 100w rigs. Mark. N2QT __ 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(s) Full duplex with 2nd RX ?
This came up as a possibility a couple years ago. I was wondering with the k3s new RF board and synthesizers if there is a chance for full duplex operation with the 2nd RX. Would make for an interesting possibility of single radio "SO2R" operation.... Mark. N2QT __ 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] Elecraft Digest, Vol 159, Issue 12
Yes, please. Maybe add the ability to show a different window for two sensors to help us easily confused so2r guys. Would also be nice to have a kat500 utility that would show real power output for those of us without a kpa500 Message: 5 Date: Sat, 15 Jul 2017 21:57:46 -0400 From: Michael Walker <va...@portcredit.net> To: "Elecraft@mailman.qth.net" <elecraft@mailman.qth.net> Subject: [Elecraft] W2 Software Message-ID: <ca+33ts6qpepc4tv+sxabrvk5vmsppoznahkj9n16adbghxt...@mail.gmail.com> Content-Type: text/plain; charset="UTF-8" To those who write software (not me.. .I just use it). Is there any chance that we could have a 'compact' version of the W2 software display just like we have for the KPA500? Just a thought. Mike va3mw Mark. N2QT __ 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 6M power out
Is it normal for the 6M output to be about 10 watts less than indicated (i.e. 90w for 100w setting). If I do the 50w wattmeter cal on 20 M all bands but 6 are pretty much right on. Conversely if I cal on 6 then all the lower bands are (not surprisingly) 10 watts high. Mark. N2QT __ 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] Preamp2 subrx K3s
Just to confirm my reading the schematic, preamp 2 is not available for the sub RX when it is using the Aux input. I am trying to compare two 6m antennas using the main and sub RX on AUX. Mark. N2QT __ 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] Danger of uncommanded PWR off?
Thanks Don, I was especially worried about the very gradual drop of voltage as the unpowered power supply’s caps discharge. I guess in the long run I’ll need to come up with a way to command the rig off. The computer will have a commanded power off via the UPS. Mark. N2QT > On May 12, 2021, at 7:31 PM, Don Wilhelm wrote: > > Mark, > > If just "pulling the plug" is what you intend, that is not a good idea. If > your K3 has been idle for a long time, you can probably get away with it, but > is not recommended. > > Issuing the Power off command will allow a smooth shutdown of the K3 and will > preserve its state. > Compare it to the difference between pulling the plug on a computer as > opposed to properly shutting it down. The pulling of the plug may lose some > of the configuration and current operational state of the K3. > > 73, > Don W3FPR > >> On 5/12/2021 6:42 PM, Mark N2QT via Elecraft wrote: >> Is there much danger of issues caused by just turning off its power supply >> rather than >> doing a commanded off for a K3? >> >> I’m looking at remotely operating an unattended k3. >> >> Mark. N2QT >> __ >> 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 d...@w3fpr.com > __ 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] Danger of uncommanded PWR off?
Is there much danger of issues caused by just turning off its power supply rather than doing a commanded off for a K3? I’m looking at remotely operating an unattended k3. Mark. N2QT __ 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] Danger of uncommanded PWR off?
Thanks Bill, I’d not thought of using the Elecraft Utility. That’ll work for me Mark. N2QT > On May 12, 2021, at 8:15 PM, Bill Rogers W3UL wrote: > > I use two techniques to turn off my remote setup. > > 1 - I run Win4K3 on the remote computer to control some of the adjustments. > It has an option to both turn off the radio and close down the program at > once. > > 2 - The Elecraft Utility app has a command function and is an easy way to > turn off the radio remotely whilst saving current settings. Commands are in > the Programmers Reference Manual online. > > 73, W3UL Bill > > > >> On Wed, May 12, 2021 at 6:44 PM Mark N2QT via Elecraft >> wrote: >> Is there much danger of issues caused by just turning off its power supply >> rather than >> doing a commanded off for a K3? >> >> I’m looking at remotely operating an unattended k3. >> >> Mark. N2QT >> __ >> 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 w3ul.b...@gmail.com > -- > 73, > William (Bill) Rogers / W3UL > Annapolis, Maryland U.S.A. __ 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 circuit breaker
My K3, SN 3091 has popped the 12v circuit breaker. After resetting the breaker everything works well, full power out with about 16A draw at 14Vdc. It has done this twice in the last week. I have been working remotely so not present to see if any other indications of a fault. Has happened on 40M (which has an external antenna tuner) and 20M which has a resonant antenna. Suggestions? Mark. N2QT __ 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
