[Elecraft] KPA500 / KAT500 Sold

[Ken K6MR]

Both amps and tuner have been sold.  Thanks for everyone’s interest.

Thanks to the list (and Eric!) for the bandwidth.

Ken K6MR


From: Ken K6MR 
Sent: Friday, March 1, 2019 4:58:42 PM
To: Elecraft Reflector Reflector
Subject: KPA500 / KAT500 For Sale

The new to me KPA1500 seems to be behaving nicely, so time to make some room in 
the equipment closet.

(2)  KPA500 amplifiers.  Both these amps have the NX1P designed low drive 
modification.  15-20 watts in for full output.

KAT500 Tuner.  Completely stock, works as designed.

All units working great, no problems since I’ve had them.  Excellent physical 
condition.

Please contact off list for additional info, pictures, etc.

Ken K6MR

k6mroutlook.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] KPA500 / KAT500 For Sale

[Ken K6MR]

The new to me KPA1500 seems to be behaving nicely, so time to make some room in 
the equipment closet.

(2)  KPA500 amplifiers.  Both these amps have the NX1P designed low drive 
modification.  15-20 watts in for full output.

KAT500 Tuner.  Completely stock, works as designed.

All units working great, no problems since I’ve had them.  Excellent physical 
condition.

Please contact off list for additional info, pictures, etc.

Ken K6MR

k6mroutlook.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

Re: [Elecraft] Intermittent loss of power output K3

[Leroy Buller]

Look at the two diodes in the SWR/watt meter circuit.  These two diode are
critical to the operation of the K3.  These are the foundation of the K3s
ALC implementation.  Ive had to replace them.

Lee K0WA

On Fri, Mar 1, 2019, 8:47 AM Peter Lock  wrote:

> Good day
>
> Late last year, my K3 (no 6957) developed a fault.  The symptoms were:
> 1. No power output when keying the rig
> 2. TX LED on when keyed, (sidetone generated in CW mode)
> 3. Single bar showing on the RF power meter, whatever scale, ie 0 - 10 or 0
> - 100
> 4. ATU tune command: relays clicking, TX LED on, no power output, no
> indication on SWR meter; two horizontal dashes in the VFO A display area
> where normally one would see the resolving SWR; in VFO B area 5.0W is
> indicated
> 5. TX gain calibration failed on 5W and 50W;  mW TX calibration gain OK
>
> I contacted Elecraft Support who suspected a failure of the LPA PA
> transistor(s) and I shipped the rig to Watsonville where Q4 on the LPA
> board
> was found to be dead.  Q4 and Q5 were replaced, re-biased and tested.
>
> On getting the rig back, the same symptoms were present, but lasted only a
> short while and the rig then performed normally, enough to have a couple of
> QSOs, but then failed.  Since then the same symptoms have been present
> intermittently.  I asked a friend who also has a K3 to try the rig to make
> sure I was not doing something silly.  For about 20 minutes after switch on
> the symptoms were present, then for no apparent reason the rig performed
> normally for approximately 10 minutes before failing again.  We were
> testing
> by repeatedly invoking ATU tune functions on different bands. Since then,
> the rig will work or not work on switch on; it has worked flawlessly for
> several hours but sometimes will present only the listed symptoms for
> several hours after switch on.
>
> When it is working, it all works, specifically the TX gain calibration
> completes normally
>
> After several days of performing normally, I relocated the rig to my
> alternative operating location; it did not work, with the same symptoms.
>
> Elecraft Support has been as exemplary as ever, but they are loth for me to
> return the rig when it may well sit on the test bench being smug and
> behaving normally.  It seems to me that the possibilities are  (i) a dry
> solder joint (ii) a loose connection or (iii) a component on the verge of
> failing.  I think I should next dismantle and reassemble the rig to try to
> exclude option (ii), and perhaps find either (i) or (iii), although needle
> and haystack comes to mind...  Has anyone suffered similar problems and
> found a solution, or can someone advise where I should concentrate my
> search?
>
> Peter
> M0RYB
>
>
>
> --
> Sent from: http://elecraft.365791.n2.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] KX2 RTTY Help

[Don Wilhelm]

John,

Do you have the soundcard properly identified to the MMTTY and 2Tone 
software?


73,
Don W3FPR

On 3/1/2019 5:05 PM, John Reilly wrote:

Trying to get RTTY running on my KX2, but no luck, so far.

The KX2 is setup for WSJTx and works properly (TX and RX) with both 
straight audio cables to the computer and through a SignaLink USB. My 
conclusion from this is that the audio connections and audio gains must 
be set relatively close.


Receive problems:
I have both MMTTY & 2Tone (via N1MM) setup. In MMTTY, I see no receive 
trace on the spectrum scope, just a dot in the middle of the XY scope. 
In 2Tone, I have the familiar two humps, but they are in left sector of 
the display. Audio gain controls do not seem to effect the display, and 
I cannot find why the display is displaced.


Transmit problem:
Both MMTTY and 2Tone transmit; however I just get the carrier, not the 
Mark and Shift. This occurs with both the SignaLink and direct audio 
cables from the computer to the KX2. They both TX, so PTT is working.



__
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] KPA1500 F/W 2.09 Beta released. Also new KPA1500 Utility.

[William Johnson]

Eric,

Thank you for the update.  I did find that I needed to reduce transceiver 
output from where I had it set ~26 W to 21 W to keep within legal output.  
Other wise no issues.  I do use BYP for tuner as I have a remote tuner. 

72 & 73,
Bill
K9YEQ
FT'er for K2, KX1, KX3, KXPA100,  KAT500, W2, etc. 

-Original Message-
From: elecraft-boun...@mailman.qth.net  On 
Behalf Of Eric Swartz - WA6HHQ, Elecraft
Sent: Friday, March 1, 2019 2:28 PM
To: Elecraft Reflector Reflector 
Subject: [Elecraft] KPA1500 F/W 2.09 Beta released. Also new KPA1500 Utility.

KPA1500 F/W 2.09 Beta has been released to the elecraft website. It can be 
downloaded from the support f/w- s/w page in the K-Line\KPA1500 section.

F/W 2.09 provides a significant improvement in ATU tuning results. It also an 
improves the communication of current radio frequency between the K3/K3S and the
1500 via the AUX cable. For those of you upgrading from 2.0, see the full 
release note list on the Support Firmware and Software page link below.

Both of these issues were highlighted in the recent "KPA-1500 tuner question" 
thread on the Elecraft email list. Our thanks to Scott-K9MA, Walt-WA1KKM, our 
regular KPA1500 Field Testers and others who have helped us quickly address 
these issues.

We also have a new KPA1500 Utility (Windows Version 1.19.2.21) on the same
KPA1500 page. Mac and Linux versions will appear soon. This utility version has 
several improvements and also fixes a bug where the erase ATU memories Utility 
button did not always perform the erase. (The erase always worked when done 
directly from the KPA1500 front panel menu.)


The Support Firmware and Software page can be found at:
https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Felecraft.com%2Fpages%2Ffirmware-software&data=02%7C01%7C%7C2c1b9acee83e4bf6fe0108d69e847e62%7C84df9e7fe9f640afb435%7C1%7C0%7C636870689222668592&sdata=U1E4SHGRWsoENj9cpjU%2BWTPPJzmNEelSjnQg2OjFuHo%3D&reserved=0

The new KPA1500 Utility, 2.09 beta instructions , release notes and a link to 
the beta download zip file are at the lower part of the KPA1500 section.

For those who are familiar with the beta install process, the direct link to the
2.09 zip file directory is:
https://nam01.safelinks.protection.outlook.com/?url=https%3A%2F%2Fftp.elecraft.com%2FKPA1500%2Ffirmware%2Fbeta&data=02%7C01%7C%7C2c1b9acee83e4bf6fe0108d69e847e62%7C84df9e7fe9f640afb435%7C1%7C0%7C636870689222678597&sdata=gCpSnjfMaIQqiBFY2laIjUN6lif9iZcrK9n7Y3hbIz8%3D&reserved=0

--
Eric
/elecraft.com/

__
Elecraft mailing list
Home: 
https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmailman%2Flistinfo%2Felecraft&data=02%7C01%7C%7C2c1b9acee83e4bf6fe0108d69e847e62%7C84df9e7fe9f640afb435%7C1%7C0%7C636870689222678597&sdata=bm5ZJWLQdKeZhEVhYO4qlVgKJhiAM9QjsMZmG8Pm5%2F0%3D&reserved=0
Help: 
https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fmailman.qth.net%2Fmmfaq.htm&data=02%7C01%7C%7C2c1b9acee83e4bf6fe0108d69e847e62%7C84df9e7fe9f640afb435%7C1%7C0%7C636870689222678597&sdata=G6agF08dzz4PwzHsn78SvQQjCmTUftJxug15nHeJ8cA%3D&reserved=0
Post: mailto:Elecraft@mailman.qth.net

This list hosted by: 
https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net&data=02%7C01%7C%7C2c1b9acee83e4bf6fe0108d69e847e62%7C84df9e7fe9f640afb435%7C1%7C0%7C636870689222678597&sdata=lHB1mbJTKJVLEqmTN%2B0pwpkZ%2BZ0RqfsMvvyjFXQnw2Y%3D&reserved=0
Please help support this email list: 
https://nam01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.qsl.net%2Fdonate.html&data=02%7C01%7C%7C2c1b9acee83e4bf6fe0108d69e847e62%7C84df9e7fe9f640afb435%7C1%7C0%7C636870689222678597&sdata=OCMPPexE%2B%2F2f%2FV39sMEPQqEAN04TpUL59oSAz9ER%2Ffo%3D&reserved=0
__
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] running computer connection while KXPA100 concurrently

[Bob N3MNT]

Use the connection on the back of the KXPA100 to the PC with the cable you
received with the KX3.



--
Sent from: http://elecraft.365791.n2.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

Re: [Elecraft] running computer connection while KXPA100 concurrently

[Don Wilhelm]

Brian,

With the KX3 and KXPA100, you should be using the optional KX3 to 
KXPA100 Adapter Cable (KXPACBL) connected as shown on page 14 of the 
KXPA100 manual.


You will then connect the KXUSB cable to the KXPA100 RS232 jack to 
communicate with either the KX3 or the KXPA100.
In other words, only one connection to the PC.  The KXPA100 jack is a 
replication of the KX3 ACC1 jack.


That will suffice for the rig control portion of NaP3.  In addition, you 
will need the connection to the soundcard from the RX I/Q jack for the 
spectral display.


73,
Don W3FPR

On 3/1/2019 5:38 PM, Brian wrote:

I am interested in running a KXPA100 with my KX3... but there is something I 
cannot figure out.
IF I am using my KX3 currently with a compter (to use NaP3) I am running the 
COMM/serial cable from ACC1 to a USB port, as well as the RX I/Q cable to a USB 
port... right?


From my reading of the manual.. if using the KXPA100 I have to run two cables 
from ACC1 and ACC2 to an adapter box that then goes to the Control input on the 
KXPA100. If I am therefore using the ACC1 port for the KXPA100 I don't have 
the port available for the computer to see the KX3 info.. right? Therefore NaP3 
has no rig or frequency info to use.



__
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] running computer connection while KXPA100 concurrently

[Walter Underwood]

I think pages 12 and 13 of the KXPA100 manual are pretty clear. That shows a 
cable from the KXPA100 to the PC at jack labeled “RS232 (PC)”.

This is the explanation from page 13.

"Personal Computer Interface Cable: All communications with both the KX3 
transceiver and the
KXPA100 amplifier take place through this cable. This cable is not required, 
but provides enhanced
capability to operate the KXPA100 using the KXPA Utility program, for updating 
firmware in either
the KXPA100 or KX3 and other functions (see Utility Program, page 32 for 
details.) Also, this cable
provides communications between your PC and the KX3 through the KXPA100. You do 
not need to
connect the KX3 directly to your computer. Simply load the KX3 Utility program, 
be sure you have
the correct serial port selected, and your computer will find the KX3 as long 
as it is powered on.”

wunder
K6WRU
Walter Underwood
CM87wj
http://observer.wunderwood.org/ (my blog)

> On Mar 1, 2019, at 2:38 PM, Brian  wrote:
> 
> I am interested in running a KXPA100 with my KX3... but there is something I 
> cannot figure out.
> IF I am using my KX3 currently with a compter (to use NaP3) I am running the 
> COMM/serial cable from ACC1 to a USB port, as well as the RX I/Q cable to a 
> USB port... right?
> 
> From my reading of the manual.. if using the KXPA100 I have to run two cables 
> from ACC1 and ACC2 to an adapter box that then goes to the Control input on 
> the KXPA100. If I am therefore using the ACC1 port for the KXPA100 I 
> don't have the port available for the computer to see the KX3 info.. right? 
> Therefore NaP3 has no rig or frequency info to use.
> 
> Or can I use the  RS232 (PC) port from the KXPA100 to provide info to the 
> computer (though I would actually NOT want RS-232 physical type port for 
> this... only USB.. since laptops don't generally have RS-232 any longer.) So 
> can I use the Elecraft  ACC to USB cable for that?
> 
> Is there a solution to this setup.. or is it that use of the amp and its 
> requisite interconnections precludes the availability?
> 
> Its a bit confusing since I know the update info has to be made available 
> somehow FROM the PC and to the KX3 in order to do firmware updates via the KX 
> Utility.
> 
> By know you will have realized that having NaP3 on my K3 has spoiled me and 
> its a 'must'...otherwise I will just leave my KX3 as a QRP rig only and 
> forget about the KXPA100 operation.
> 
> 
> Brien VE3VAW
> 
> 
> Sent from Outlook
> __
> 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] running computer connection while KXPA100 concurrently

[Brian]

I am interested in running a KXPA100 with my KX3... but there is something I 
cannot figure out.
IF I am using my KX3 currently with a compter (to use NaP3) I am running the 
COMM/serial cable from ACC1 to a USB port, as well as the RX I/Q cable to a USB 
port... right?

>From my reading of the manual.. if using the KXPA100 I have to run two cables 
>from ACC1 and ACC2 to an adapter box that then goes to the Control input on 
>the KXPA100. If I am therefore using the ACC1 port for the KXPA100 I don't 
>have the port available for the computer to see the KX3 info.. right? 
>Therefore NaP3 has no rig or frequency info to use.

Or can I use the  RS232 (PC) port from the KXPA100 to provide info to the 
computer (though I would actually NOT want RS-232 physical type port for 
this... only USB.. since laptops don't generally have RS-232 any longer.) So 
can I use the Elecraft  ACC to USB cable for that?

Is there a solution to this setup.. or is it that use of the amp and its 
requisite interconnections precludes the availability?

Its a bit confusing since I know the update info has to be made available 
somehow FROM the PC and to the KX3 in order to do firmware updates via the KX 
Utility.

By know you will have realized that having NaP3 on my K3 has spoiled me and its 
a 'must'...otherwise I will just leave my KX3 as a QRP rig only and forget 
about the KXPA100 operation.


Brien VE3VAW


Sent from Outlook
__
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] KX2 RTTY Help

[John Reilly]

Trying to get RTTY running on my KX2, but no luck, so far.

The KX2 is setup for WSJTx and works properly (TX and RX) with both 
straight audio cables to the computer and through a SignaLink USB. My 
conclusion from this is that the audio connections and audio gains must 
be set relatively close.


Receive problems:
I have both MMTTY & 2Tone (via N1MM) setup. In MMTTY, I see no receive 
trace on the spectrum scope, just a dot in the middle of the XY scope. 
In 2Tone, I have the familiar two humps, but they are in left sector of 
the display. Audio gain controls do not seem to effect the display, and 
I cannot find why the display is displaced.


Transmit problem:
Both MMTTY and 2Tone transmit; however I just get the carrier, not the 
Mark and Shift. This occurs with both the SignaLink and direct audio 
cables from the computer to the KX2. They both TX, so PTT is working.


I have tried the above in both DATA A and AFSK A modes.

Must be making silly mistake(s).  Help!

Thanks.
  - 73,John, N0TA
__
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] KUSB cable needed

[TJ Campie]

Sabrent USB 2.0 to Serial (9-Pin)...
https://www.amazon.com/dp/B006AA04K0?ref=ppx_pop_mob_ap_share

This one works great with my k3
__
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] KPA1500 F/W 2.09 Beta released. Also new KPA1500 Utility.

[Eric Swartz - WA6HHQ, Elecraft]

KPA1500 F/W 2.09 Beta has been released to the elecraft website. It can be 
downloaded from the support f/w- s/w page in the K-Line\KPA1500 section.


F/W 2.09 provides a significant improvement in ATU tuning results. It also an 
improves the communication of current radio frequency between the K3/K3S and the 
1500 via the AUX cable. For those of you upgrading from 2.0, see the full 
release note list on the Support Firmware and Software page link below.


Both of these issues were highlighted in the recent "KPA-1500 tuner question" 
thread on the Elecraft email list. Our thanks to Scott-K9MA, Walt-WA1KKM, our 
regular KPA1500 Field Testers and others who have helped us quickly address 
these issues.


We also have a new KPA1500 Utility (Windows Version 1.19.2.21) on the same 
KPA1500 page. Mac and Linux versions will appear soon. This utility version has 
several improvements and also fixes a bug where the erase ATU memories Utility 
button did not always perform the erase. (The erase always worked when done 
directly from the KPA1500 front panel menu.)



The Support Firmware and Software page can be found at:
https://elecraft.com/pages/firmware-software

The new KPA1500 Utility, 2.09 beta instructions , release notes and a link to 
the beta download zip file are at the lower part of the KPA1500 section.


For those who are familiar with the beta install process, the direct link to the 
2.09 zip file directory is:

https://ftp.elecraft.com/KPA1500/firmware/beta

--
Eric
/elecraft.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

Re: [Elecraft] Intermittent loss of power output K3

[John Saxon via Elecraft]

 Ray:
I get the same relay chatter, no display of SWR and no output.  Some time later 
I may do the same ATU and it works.  Appears to do the same thing as when 
attempting to load an actual antenna.
Because this discussion has begun, I think I will set up again on the bench and 
see if it will fail. Will be later in the day, I will report results.
--JohnK5ENQ

On Friday, March 1, 2019, 9:19:43 AM CST, Raymond Sills 
 wrote:  
 
 What happens when the rig is connected to a dummy load?
73 de RayK2ULRKX3 #211


  
__
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] Split receiving and 2 ears

[Rick WA6NHC]

I can give you a scenario  that may make it easier to understand; this 
presumes you have the sub rx installed.


The DX is staying on one TX frequency, put that in the VFO A, leave it 
alone.  Have your TX set to split on VFO B.  Go into split RX so you can 
hear both; using the VFO B to listen to the station that the DX is 
working now (in your right ear).


Once you determine (by tracking/listening) to the direction the DX is 
listening (up, down or not) to work the pileup, you put the VFO B on 
your intended 'attack' point.  At this time, you can hear what is there, 
plus the DX.  (This is where a bandscope REALLY pays off, MUCH simpler.)


Presuming the DX fades and you need more signal to hear, you turn off 
split and you're listening only to the DX (VFO A) while VFO B is ready 
for split TX.


If you're listening split for another reason, you make the frequency you 
need to hear alone in VFO A by pushing the A/B button, then turn off 
split, two buttons max.


73,
Rick nhc

On 3/1/2019 9:06 AM, Mike Wetzel wrote:

Is there an easy way when listening split say 7205 and 7065 (7205 in one ear
and 7065 in the other) and then put 2 ears on one frequency or the other
quickly?

  


Mike W9RE

  


__
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] Split receiving and 2 ears

[Don Wilhelm]

Mike,

Certainly, put the frequency you want to listen to into VFO A (unless it 
is already there), and then drop out of SPLIT.  Either a one or two 
button operation.


73,
Don W3FPR

On 3/1/2019 12:06 PM, Mike Wetzel wrote:

Is there an easy way when listening split say 7205 and 7065 (7205 in one ear
and 7065 in the other) and then put 2 ears on one frequency or the other
quickly?

__
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] Split receiving and 2 ears

[Mike Wetzel]

Is there an easy way when listening split say 7205 and 7065 (7205 in one ear
and 7065 in the other) and then put 2 ears on one frequency or the other
quickly?

 

Mike W9RE

 

__
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] K3s For Sale

[Doug Renwick]

For sale Elecraft K3S Transceiver. I am in the process of downsizing due to
my age and wish to sell my spare K3S. It resides in Canada and would appeal
to a VE as Canadian tax has been paid. Also I have shipped many items to the
USA and world wide. Shipping is with the original Elecraft box.

Here are the specs:
Mint and loaded with maybe 1 hour receive only. Serial # 10619. Factory
built and tested with the following: 
KPA3A-F 100W
KAT3A-F ATU
E850323-F 5 ppm Oscillator
KFL3A-2.7K-F 2.7 Filter
KBPF3A-F General Coverage RX
KDVR3-F Digital Voice Recorder
KFL3A-2.1K-IR-F 2.1 kHz 8 pole filter
KFL3A-400-IR-F 400 Hz 8 pole filter
KFL3B-FM-IR-F FM 8 pole filter
KRX3A-F 2nd RX
KFL3A-2.7-F 2.7 kHz 5 pole filter
$5343 USD invested.

If interested contact me directly at ve...@sasktel.net 

Doug


---
This email has been checked for viruses by Avast antivirus software.
https://www.avast.com/antivirus

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

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

Re: [Elecraft] [ELECRAFT] KPA500 NEW OWNER QUESTIONS.......

[Don Wilhelm]

In this discussion about ALC, I have to inject a bit of fact.
The Elecraft transceivers K2/K3/K3S/KX2/KX3 use a power control system 
that is different from all other amateur transceivers, and unless there 
is a problem with the transceiver, there is no power overshoot.  In 
fact, after a band change or a power setting change, the RF starts at a 
low level and builds up to the power knob setting after a dit time or a 
few syllables on voice.


That means amplifier ALC is not necessary, and if used should never be 
used for power level control (doing that will cause distortion).


W8JI - Tom Rauch is responding to operation with most transceivers 
driving the amplifier.  With the Elecraft transceivers, the amplifier's 
ALC indicator should never come on unless there is an amplifier fault 
condition - high SWR, no antenna, etc.

Tom W8JI should know - he designed several of the Ameritron amplifiers.

Operated properly, there is no need for ALC at all, especially with 
those amplifiers employing cathode or grid detection of overload.  For 
the amplifiers with more sophisticated fault detection, connecting the 
ALC line to the driving transceiver is OK because it allows the 
amplifier to shut down (or reduce power) the transceiver if a fault is 
detected.


As Tom pointed out in at the end of his article, ALC should not be used 
as a power control mechanism - doing so will only lead to distortion.


73,
Don W3FPR

On 2/28/2019 10:19 PM, Bob McGraw K4TAX wrote:
This fellow seems to have a good handle on the ALC issue as it relates 
to overshoot in the transceiver.


https://www.w8ji.com/alc_exciter_power_overshoot.htm


Here Tom goes into the discussion of good ALC vs. bad ALC systems.

https://www.w8ji.com/ameritron_alc_adjustment.htm

__
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] Intermittent loss of power output K3

[Raymond Sills]

What happens when the rig is connected to a dummy load?
73 de RayK2ULRKX3 #211


-Original Message-
From: John Saxon via Elecraft 
To: elecraft ; Peter Lock 
Sent: Fri, Mar 1, 2019 10:12 am
Subject: Re: [Elecraft] Intermittent loss of power output K3

 Peter:
This is John Saxon, K5ENQ, in Pearland, TX, and I have experienced what appears 
to be the identical symptoms.  Also have contacted support, got some 
suggestions, tried them to no avail (mostly dealing with possible rf grounding 
issues).  Like you, it may operate perfectly for hours or days, then later I 
need to ATU and I get the same results as yours when yours fails.  My serial 
#3524.  Like you I am not inclined to send it in for fear it may not fail.  I 
also experience these somewhat intermittent failures when loading into a dummy 
load on my bench.

I am sorry I have nothing useful to convey, other than that you are not alone  
:-)  

If anyone does come up with suggestions/solutions, please broadcast to group as 
there are now at least 2 folks with what appears to be the same issue(s).
Good luck to us all,JohnK5ENQ

    On Friday, March 1, 2019, 8:48:16 AM CST, Peter Lock 
 wrote:  
 
 Good day

Late last year, my K3 (no 6957) developed a fault.  The symptoms were:
1. No power output when keying the rig
2. TX LED on when keyed, (sidetone generated in CW mode)
3. Single bar showing on the RF power meter, whatever scale, ie 0 - 10 or 0
- 100
4. ATU tune command: relays clicking, TX LED on, no power output, no
indication on SWR meter; two horizontal dashes in the VFO A display area
where normally one would see the resolving SWR; in VFO B area 5.0W is
indicated
5. TX gain calibration failed on 5W and 50W;  mW TX calibration gain OK

I contacted Elecraft Support who suspected a failure of the LPA PA
transistor(s) and I shipped the rig to Watsonville where Q4 on the LPA board
was found to be dead.  Q4 and Q5 were replaced, re-biased and tested.

On getting the rig back, the same symptoms were present, but lasted only a
short while and the rig then performed normally, enough to have a couple of
QSOs, but then failed.  Since then the same symptoms have been present
intermittently.  I asked a friend who also has a K3 to try the rig to make
sure I was not doing something silly.  For about 20 minutes after switch on
the symptoms were present, then for no apparent reason the rig performed
normally for approximately 10 minutes before failing again.  We were testing
by repeatedly invoking ATU tune functions on different bands. Since then,
the rig will work or not work on switch on; it has worked flawlessly for
several hours but sometimes will present only the listed symptoms for
several hours after switch on.

When it is working, it all works, specifically the TX gain calibration
completes normally

After several days of performing normally, I relocated the rig to my
alternative operating location; it did not work, with the same symptoms.

Elecraft Support has been as exemplary as ever, but they are loth for me to
return the rig when it may well sit on the test bench being smug and
behaving normally.  It seems to me that the possibilities are  (i) a dry
solder joint (ii) a loose connection or (iii) a component on the verge of
failing.  I think I should next dismantle and reassemble the rig to try to
exclude option (ii), and perhaps find either (i) or (iii), although needle
and haystack comes to mind...  Has anyone suffered similar problems and
found a solution, or can someone advise where I should concentrate my
search?

Peter
M0RYB



--
Sent from: http://elecraft.365791.n2.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] Intermittent loss of power output K3

[John Saxon via Elecraft]

 Peter:
This is John Saxon, K5ENQ, in Pearland, TX, and I have experienced what appears 
to be the identical symptoms.  Also have contacted support, got some 
suggestions, tried them to no avail (mostly dealing with possible rf grounding 
issues).  Like you, it may operate perfectly for hours or days, then later I 
need to ATU and I get the same results as yours when yours fails.  My serial 
#3524.  Like you I am not inclined to send it in for fear it may not fail.  I 
also experience these somewhat intermittent failures when loading into a dummy 
load on my bench.

I am sorry I have nothing useful to convey, other than that you are not alone  
:-)  

If anyone does come up with suggestions/solutions, please broadcast to group as 
there are now at least 2 folks with what appears to be the same issue(s).
Good luck to us all,JohnK5ENQ

On Friday, March 1, 2019, 8:48:16 AM CST, Peter Lock 
 wrote:  
 
 Good day

Late last year, my K3 (no 6957) developed a fault.  The symptoms were:
1. No power output when keying the rig
2. TX LED on when keyed, (sidetone generated in CW mode)
3. Single bar showing on the RF power meter, whatever scale, ie 0 - 10 or 0
- 100
4. ATU tune command: relays clicking, TX LED on, no power output, no
indication on SWR meter; two horizontal dashes in the VFO A display area
where normally one would see the resolving SWR; in VFO B area 5.0W is
indicated
5. TX gain calibration failed on 5W and 50W;  mW TX calibration gain OK

I contacted Elecraft Support who suspected a failure of the LPA PA
transistor(s) and I shipped the rig to Watsonville where Q4 on the LPA board
was found to be dead.  Q4 and Q5 were replaced, re-biased and tested.

On getting the rig back, the same symptoms were present, but lasted only a
short while and the rig then performed normally, enough to have a couple of
QSOs, but then failed.  Since then the same symptoms have been present
intermittently.  I asked a friend who also has a K3 to try the rig to make
sure I was not doing something silly.  For about 20 minutes after switch on
the symptoms were present, then for no apparent reason the rig performed
normally for approximately 10 minutes before failing again.  We were testing
by repeatedly invoking ATU tune functions on different bands. Since then,
the rig will work or not work on switch on; it has worked flawlessly for
several hours but sometimes will present only the listed symptoms for
several hours after switch on.

When it is working, it all works, specifically the TX gain calibration
completes normally

After several days of performing normally, I relocated the rig to my
alternative operating location; it did not work, with the same symptoms.

Elecraft Support has been as exemplary as ever, but they are loth for me to
return the rig when it may well sit on the test bench being smug and
behaving normally.  It seems to me that the possibilities are  (i) a dry
solder joint (ii) a loose connection or (iii) a component on the verge of
failing.  I think I should next dismantle and reassemble the rig to try to
exclude option (ii), and perhaps find either (i) or (iii), although needle
and haystack comes to mind...  Has anyone suffered similar problems and
found a solution, or can someone advise where I should concentrate my
search?

Peter
M0RYB



--
Sent from: http://elecraft.365791.n2.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] Intermittent loss of power output K3

[Peter Lock]

Good day

Late last year, my K3 (no 6957) developed a fault.  The symptoms were:
1. No power output when keying the rig
2. TX LED on when keyed, (sidetone generated in CW mode)
3. Single bar showing on the RF power meter, whatever scale, ie 0 - 10 or 0
- 100
4. ATU tune command: relays clicking, TX LED on, no power output, no
indication on SWR meter; two horizontal dashes in the VFO A display area
where normally one would see the resolving SWR; in VFO B area 5.0W is
indicated
5. TX gain calibration failed on 5W and 50W;  mW TX calibration gain OK

I contacted Elecraft Support who suspected a failure of the LPA PA
transistor(s) and I shipped the rig to Watsonville where Q4 on the LPA board
was found to be dead.  Q4 and Q5 were replaced, re-biased and tested.

On getting the rig back, the same symptoms were present, but lasted only a
short while and the rig then performed normally, enough to have a couple of
QSOs, but then failed.  Since then the same symptoms have been present
intermittently.  I asked a friend who also has a K3 to try the rig to make
sure I was not doing something silly.  For about 20 minutes after switch on
the symptoms were present, then for no apparent reason the rig performed
normally for approximately 10 minutes before failing again.  We were testing
by repeatedly invoking ATU tune functions on different bands. Since then,
the rig will work or not work on switch on; it has worked flawlessly for
several hours but sometimes will present only the listed symptoms for
several hours after switch on.

When it is working, it all works, specifically the TX gain calibration
completes normally

After several days of performing normally, I relocated the rig to my
alternative operating location; it did not work, with the same symptoms.

Elecraft Support has been as exemplary as ever, but they are loth for me to
return the rig when it may well sit on the test bench being smug and
behaving normally.  It seems to me that the possibilities are  (i) a dry
solder joint (ii) a loose connection or (iii) a component on the verge of
failing.  I think I should next dismantle and reassemble the rig to try to
exclude option (ii), and perhaps find either (i) or (iii), although needle
and haystack comes to mind...  Has anyone suffered similar problems and
found a solution, or can someone advise where I should concentrate my
search?

Peter
M0RYB



--
Sent from: http://elecraft.365791.n2.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] KUSB cable needed

[Howard Sherer]

I must have lost my KUSB cable to connect my KPA 500 to a computer for
remote control (9pin male to USB). I have many KXUSB cables. dose anyone
have an extra to either sell or trade?

Howard AE3T
__
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