[Elecraft] FS: Elecraft 500W Power Combo

[Mark Adams]

I'm parting with my KPA500 / KAT500 combo. Was new from Elecraft in February 
2021. Both units work perfectly and are cosmetically excellent. Includes 
original manuals, 120V power cable and fuses, 1x KXSER (E850463), tuner power 
cable, NEMA 6-15P power cable, Key Line cable, Computer interface cable for 
tuner, Enhanced Mode Aux Cable set for KPA500 + second E850463 aux cable for 
KAT500. AUX Cable Set incl: 15-Pin to 15-Pin DE-15 + Key Line Interrupter 
adapter.

I'm simplifying my shack and upgrading to a KW. If the package does not sell in 
a reasonable time I'll consider splitting the items. Email me for photos.

The asking price is $3100 and will be shipped in original Elecraft packaging 
via UPS with insurance. Or save $150 with local pickup anywhere between Erie, 
PA and Rochester, NY.

Payment options are PayPal, cash and USPS money order. 

73,
Mark Adams, K2QO
FN03ra
716-525-0076



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[Elecraft] K3 - Display flashes "thr 4 OFF" intermittently

[Dave Fugleberg]

I've noticed some strange behavior with my K3 lately.  Sometimes the
display will flash twice very quickly and beep twice. I had to take a video
with my phone to see what it says because it happens quickly.  The upper
part of the LCD says "thr4", and the lower part says "OFF" when this
happens.
This seems to be triggered when I do one of these three things:
Change band with the BAND button
Change band via CAT command
Press, then release the REV button.

It doesn't seem to hurt anything, but it's sure annoying.

The only thing i can find in the menus remotely close to this is the AGC
Onset point, (which IS set to 4 on my rig), but that display in the menu
shows 004 on top and AGC THR on the bottom.

Any ideas what causes this? The radio SN is in the low 8000s.

73 de W0ZF
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[Elecraft] FOR SALE: Elecraft K3s/100 Dual Receiver/Transceiver #106xx

[Clay Autery]

All the details are on my QRZ listing:

https://forums.qrz.com/index.php?threads/elecraft-k3s-100-dual-receiver-transceiver-10643-more.887926/

$3500.00 SHIPPED!!  (lower 48, rest of world is at my cost)

Limited time, price lowered, shipping thrown in.

Perfect Christmas gift...

 73,

--
Clay E. Autery, Jr.
KY5G

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Re: [Elecraft] K3S Split Operation

[Victor Rosenthal 4X6GP]

Some years ago there was a DXpedition to VU4 (or VU7, not sure). It 
wasn't easy -- I was in California then. The pileups were tough and 
there was lots of DQRM. So I decided to wait a couple of days.
Then there was a big tsunami, with tens of thousands of casualties. The 
operators were not hurt, but it was the end of the operation.

It's always a good idea to work them as soon as possible.

73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/

On 07/11/2023 21:41, Wes wrote:
In this case I would say the DX operator is lousy.  A 25 KHz spread on 
CW is ridiculous.  It's even ridiculous on SSB.  Wait for the pileups 
subside and work him when he's begging.


Now if it's Glorioso, that's different.  My #340.

Wes  N7WS

On 11/7/2023 8:07 AM, Victor Rosenthal 4X6GP wrote:
In certain situations you would definitely do better with a second 
receiver.Suppose you have a CW pileup on a rare station, where the 
pileup is 25 kHz wide, with many stations (can I say lids?) calling 
continuously, and the DX station is sending 35 wpm. It is very 
difficult to use REV or TF-SET to pick out the right spot and pop back 
to the DX in time. There is a built-in delay in the button, plus your 
reaction time.
You can do it, but you will get more good shots at the DX with a 
second receiver. And the name of the game in breaking pileups is 
maximizing the number of calls you make on the right frequency.
It takes a little care in setting up the right and left channels, plus 
some practice, but the two-receiver method is definitely superior.
I go even farther and use the two receivers in my K3 for diversity 
reception, and have another transceiver that I use to listen to the 
pileup and transmit.


73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/


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Re: [Elecraft] K3S Split Operation

[Victor Rosenthal 4X6GP]

You don't call ON the frequency of the last QSO (usually). But you start 
there in determining the pattern.


73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/

On 07/11/2023 21:28, Wes wrote:
I'm more-or-less with Andy on this one except I use the big brother 
TS-890 and don't need the external panadapter and I've never used CW 
Skimmer in my life.  I will say that the best bandscope/panadapter I've 
ever used was an SDR-IQ, running SpectraVue software on the i-f output 
of a K3 or K3S.


In the TS-890, the RIT control can control the split TX frequency which 
is displayed on the bandscope screen.  I typically use it, without doing 
a TF-Set swap, to set my calling frequency.  There is much more in 
working split that just hopping on the last callers QRG.  More often 
than not, this is the wrong thing to do on CW.  SSB is usually different 
because the DX announces their listening frequency, but you have to 
listen.  Sometimes they spread the pile by saying up 5 to 15, but they 
only listen up 5.


I remember many years ago an expedition, (forgot who but their leader 
was the banquet speaker at Visalia the one year I went, and he described 
this in his talk)  They were operating SSB on 14.195 and announcing 
listening 5 to 10 up. But once in a while he would say, "Five to ten 
up...pause...and 14.190")  Of course everyone would immediately start 
calling up 5 to 10.  I called on 14.190 and worked him on one call.


Sometimes the DX has a rhythm; they move up or down some Hz after each 
call. You need to figure this out.  But sometimes they simply don't.  I 
remember calling my friend, Ned, AA7A, when he was operating RTTY from 
either or both VP8STI/VP8SGI.  I called for about an hour while trying 
to figure out his pattern.  I finally figured out that he didn't have 
one.  I picked a QRG and stuck with it until he found me.  (I worked 
both stations)  I talked to him later at a club meeting and he confirmed 
he just spun the dial.


If you want to use a second RX and call on the last caller's frequency, 
good for you, and better for me.


Wes  N7WS

On 11/7/2023 6:14 AM, Andy Durbin wrote:
That was a head spinning discussion!  No Elecraft transceiver here but 
I've been working single RX Split with a TS-590S for as long as I have 
owned it.


For the TS-590 the key to working split pileups is the TF-SET key 
which swaps TX and RX VFO as long as it is held.  Sounds like Elecraft 
does the same with the REV key.  Listen on the DX frequency, after his 
CQ or TU press TFSET to listen to the pileup. Spin the dial to find 
who is answering with a report, this sets the TX VFO to that 
frequency, adjust up or down based on prediction of DX listening 
point, release TF-SET and call after next TU.


TF-SET, an SDR based panadapter, and CW Skimmer all help me when 
trying to work the big pileups.  With TF-SET held I can click HDSDR 
(SDR panadapter) to set the TX VFO. I doubt I would do any better with 
a second receiver.


73,



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Re: [Elecraft] K3S Split Operation

[Wes]

In this case I would say the DX operator is lousy.  A 25 KHz spread on CW is 
ridiculous.  It's even ridiculous on SSB.  Wait for the pileups subside and work 
him when he's begging.


Now if it's Glorioso, that's different.  My #340.

Wes  N7WS

On 11/7/2023 8:07 AM, Victor Rosenthal 4X6GP wrote:
In certain situations you would definitely do better with a second 
receiver.Suppose you have a CW pileup on a rare station, where the pileup is 
25 kHz wide, with many stations (can I say lids?) calling continuously, and 
the DX station is sending 35 wpm. It is very difficult to use REV or TF-SET to 
pick out the right spot and pop back to the DX in time. There is a built-in 
delay in the button, plus your reaction time.
You can do it, but you will get more good shots at the DX with a second 
receiver. And the name of the game in breaking pileups is maximizing the 
number of calls you make on the right frequency.
It takes a little care in setting up the right and left channels, plus some 
practice, but the two-receiver method is definitely superior.
I go even farther and use the two receivers in my K3 for diversity reception, 
and have another transceiver that I use to listen to the pileup and transmit.


73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/


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Re: [Elecraft] HI CUR warning on K3

[W3FPR]

Pete,

The first thing to check for a HI CUR warning is the power supply 
voltage under full transmit load.

If it is low, it will cause a HI CUR condition.
The other thing that could cause it is a problem in the T/R switch or 
Low Pass Filter - the fact that it continues into an RX cycle points to 
that possibility.


73,
Don W3FPR

On 11/7/2023 10:31 AM, Pete Smith N4ZR wrote:
I send a few characters of CW into my Carolina Windom on 40M and after 
a delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR 
warning, and the audio gain is reduced significantly.  Touch the AF 
gain control and it instantly returns the gain to normal, but 
frequently the HI CURR warning returns over and over, without any 
additional transmissions.  This sequence does not happen, even with 
1500 watts, into my dummy load, nor does it happen on the same antenna 
on 80M, or on 20 meters on my tribander.


I've read the HI CUR warning discussion on page 65 of the manual, but 
it doesn't seem relevant, because I don't have external speakers.  The 
fact that it  only happens when feeding an actual antenna on one band 
suggests RFI, but the fact that the HI CUR warning and gain reduction 
recur again and again long after any RF has me puzzled.  Any 
suggestions gratefully accepted!




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Re: [Elecraft] K3S Split Operation

[Wes]

I'm more-or-less with Andy on this one except I use the big brother TS-890 and 
don't need the external panadapter and I've never used CW Skimmer in my life.  I 
will say that the best bandscope/panadapter I've ever used was an SDR-IQ, 
running SpectraVue software on the i-f output of a K3 or K3S.


In the TS-890, the RIT control can control the split TX frequency which is 
displayed on the bandscope screen.  I typically use it, without doing a TF-Set 
swap, to set my calling frequency.  There is much more in working split that 
just hopping on the last callers QRG.  More often than not, this is the wrong 
thing to do on CW.  SSB is usually different because the DX announces their 
listening frequency, but you have to listen.  Sometimes they spread the pile by 
saying up 5 to 15, but they only listen up 5.


I remember many years ago an expedition, (forgot who but their leader was the 
banquet speaker at Visalia the one year I went, and he described this in his 
talk)  They were operating SSB on 14.195 and announcing listening 5 to 10 up.  
But once in a while he would say, "Five to ten up...pause...and 14.190")  Of 
course everyone would immediately start calling up 5 to 10.  I called on 14.190 
and worked him on one call.


Sometimes the DX has a rhythm; they move up or down some Hz after each call.  
You need to figure this out.  But sometimes they simply don't.  I remember 
calling my friend, Ned, AA7A, when he was operating RTTY from either or both 
VP8STI/VP8SGI.  I called for about an hour while trying to figure out his 
pattern.  I finally figured out that he didn't have one.  I picked a QRG and 
stuck with it until he found me.  (I worked both stations)  I talked to him 
later at a club meeting and he confirmed he just spun the dial.


If you want to use a second RX and call on the last caller's frequency, good for 
you, and better for me.


Wes  N7WS

On 11/7/2023 6:14 AM, Andy Durbin wrote:

That was a head spinning discussion!  No Elecraft transceiver here but I've 
been working single RX Split with a TS-590S for as long as I have owned it.

For the TS-590 the key to working split pileups is the TF-SET key which swaps 
TX and RX VFO as long as it is held.  Sounds like Elecraft does the same with 
the REV key.  Listen on the DX frequency, after his CQ or TU press TFSET to 
listen to the pileup. Spin the dial to find who is answering with a report, 
this sets the TX VFO to that frequency, adjust up or down based on prediction 
of DX listening point, release TF-SET and call after next TU.

TF-SET, an SDR based panadapter, and CW Skimmer all help me when trying to work 
the big pileups.  With TF-SET held I can click HDSDR (SDR panadapter) to set 
the TX VFO. I doubt I would do any better with a second receiver.

73,



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Re: [Elecraft] K3 Options Last Time Buy Update

[Michael Carter via Elecraft]

Hi Dave,

I can't speak to the module you ordered, but I
received on 28 October the KPA3A 100 watt upgrade I had
ordered back in spring 2021.  The effort to ship upgrades
is definitely a 'live effort,' and the Shipping Status updates
on the Elecraft web page accurately reflected the
status of the module I ordered.

73,
Mike, K8CN
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Re: [Elecraft] [RFI] HI CUR warning on K3

[Michael Carter via Elecraft]

Hi Pete,

I had a similar set of symptoms with my K3
several years back.  Turns out it was not the
K3 at all, but a failing filter capacitor in
my linear regulated power supply.  I
had sporadic audio dropouts after transmitting
in much the same way as you described,
always at QRP TX levels.

Try a different power supply of newer vintage.
I tested the ESR of the filter capacitors in
my supply and found it to be much too high.

73,
Mike, K8CN

From: RFI  on behalf of Pete 
Smith N4ZR 
Sent: Tuesday, November 7, 2023 10:31 AM
To: Elecraft List ; RFI List 
Subject: [RFI] HI CUR warning on K3

CAUTION: This email originated from outside of the University System. Do not 
click links or open attachments unless you recognize the sender and know the 
content is safe.


I send a few characters of CW into my Carolina Windom on 40M and after a
delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR
warning, and the audio gain is reduced significantly.  Touch the AF gain
control and it instantly returns the gain to normal, but frequently the
HI CURR warning returns over and over, without any additional
transmissions.  This sequence does not happen, even with 1500 watts,
into my dummy load, nor does it happen on the same antenna on 80M, or on
20 meters on my tribander.

I've read the HI CUR warning discussion on page 65 of the manual, but it
doesn't seem relevant, because I don't have external speakers.  The fact
that it  only happens when feeding an actual antenna on one band
suggests RFI, but the fact that the HI CUR warning and gain reduction
recur again and again long after any RF has me puzzled.  Any suggestions
gratefully accepted!

--
73, Pete N4ZR
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[Elecraft] HI CUR warning on K3

[Pete Smith N4ZR]

I send a few characters of CW into my Carolina Windom on 40M and after a 
delay (1-5 seconds after I stop sending) the K3 flashes a HI CUR 
warning, and the audio gain is reduced significantly.  Touch the AF gain 
control and it instantly returns the gain to normal, but frequently the 
HI CURR warning returns over and over, without any additional 
transmissions.  This sequence does not happen, even with 1500 watts, 
into my dummy load, nor does it happen on the same antenna on 80M, or on 
20 meters on my tribander.


I've read the HI CUR warning discussion on page 65 of the manual, but it 
doesn't seem relevant, because I don't have external speakers.  The fact 
that it  only happens when feeding an actual antenna on one band 
suggests RFI, but the fact that the HI CUR warning and gain reduction 
recur again and again long after any RF has me puzzled.  Any suggestions 
gratefully accepted!


--
73, Pete N4ZR
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Re: [Elecraft] K3S Split Operation

[Victor Rosenthal 4X6GP]

In certain situations you would definitely do better with a second 
receiver.Suppose you have a CW pileup on a rare station, where the 
pileup is 25 kHz wide, with many stations (can I say lids?) calling 
continuously, and the DX station is sending 35 wpm. It is very difficult 
to use REV or TF-SET to pick out the right spot and pop back to the DX 
in time. There is a built-in delay in the button, plus your reaction time.
You can do it, but you will get more good shots at the DX with a second 
receiver. And the name of the game in breaking pileups is maximizing the 
number of calls you make on the right frequency.
It takes a little care in setting up the right and left channels, plus 
some practice, but the two-receiver method is definitely superior.
I go even farther and use the two receivers in my K3 for diversity 
reception, and have another transceiver that I use to listen to the 
pileup and transmit.


73,
Victor, 4X6GP
Rehovot, Israel
Formerly K2VCO
CWops no. 5
http://www.qsl.net/k2vco/

On 07/11/2023 15:14, Andy Durbin wrote:

That was a head spinning discussion!  No Elecraft transceiver here
but I've been working single RX Split with a TS-590S for as long as I
have owned it.

For the TS-590 the key to working split pileups is the TF-SET key
which swaps TX and RX VFO as long as it is held.  Sounds like
Elecraft does the same with the REV key.  Listen on the DX frequency,
after his CQ or TU press TFSET to listen to the pileup. Spin the dial
to find who is answering with a report, this sets the TX VFO to that
frequency, adjust up or down based on prediction of DX listening
point, release TF-SET and call after next TU.

TF-SET, an SDR based panadapter, and CW Skimmer all help me when
trying to work the big pileups.  With TF-SET held I can click HDSDR
(SDR panadapter) to set the TX VFO. I doubt I would do any better
with a second receiver.

73, Andy, k3wyc 
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Re: [Elecraft] K3 Options Last Time Buy Update

[wb0gaz via Elecraft]

 (last post I'd seen copied below.)

Been almost 2 months since last update (9/15/2023) - still awaiting 
notification of item I ordered (K3EXREF) in April 2021.

Doesn't look like any recent update to the K3 options on ship status page.

Is this still a live effort?

Thanks for refresh on this!

Dave

###

[Elecraft] K3 Options Last Time Buy Update

Eric Swartz Fri, 15 Sep 2023 10:12:29 -0700

Good news - We are now moving along smoothly on the majority of our K3
Option purchasing, assembly and testing. Here is the latest status as of
9/15/23.


*KPA3A 100W PA: * These should begin shipping in the next 2-3 weeks.
We have completed building and testing the main KPA3A PA modules and are
now kitting the mounting hardware and packaging everything for shipping.
We are also now contacting those of you with KPA3A deposit orders to
confirm your order and your K3/K3S serial number. (The S/N is important to
make sure the installation hardware and PA interface I/O board match your
radio revision.)

*KXV3B Xverter interface:* Out for PCB assembly followed by factory
testing. We expect to begin shipping in the next 5-6 weeks.

*P3TXMON:* Out for PCB assembly, followed by factory testing. We expect to
begin shipping in the next 5-6 weeks.

*KAT3A ATU:* Out for PCB assembly, followed by factory testing. We expect
to begin shipping in the next 5-6 weeks.

*KDVR3A*: Out for PCB assembly, followed by factory testing. We expect to
begin shipping in the next 5-6 weeks.

*P3SVGA:* Out for PCB assembly, followed by factory testing. We expect to
begin shipping in the next 5-6 weeks.

*K3EXREF:* Purchasing final parts and PCB fabs, then out to PCB assembly,
followed by factory testing. We hope to begin shipping in the next 6-8
weeks.

*KBPF3A:* Purchasing final parts and PCB fabs, then out to PCB assembly,
followed by factory testing. We hope to begin shipping in the next 6-8
weeks.

*K3/0 and P3*. These will be the last two K3 Options we build, as they are
more complex and are taking more time to source key parts, sheet metal,
displays etc. We will update the shipping status on these after we begin
shipping the other K3 options listed above.

I'll post updates as we get closer to shipping these options. (And
if some begin shipping earlier than the above schedule. :-)

73,
Eric
*elecraft.com *
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[Elecraft] K3S Split Operation

[Andy Durbin]

That was a head spinning discussion!  No Elecraft transceiver here but I've 
been working single RX Split with a TS-590S for as long as I have owned it.

For the TS-590 the key to working split pileups is the TF-SET key which swaps 
TX and RX VFO as long as it is held.  Sounds like Elecraft does the same with 
the REV key.  Listen on the DX frequency, after his CQ or TU press TFSET to 
listen to the pileup. Spin the dial to find who is answering with a report, 
this sets the TX VFO to that frequency, adjust up or down based on prediction 
of DX listening point, release TF-SET and call after next TU.

TF-SET, an SDR based panadapter, and CW Skimmer all help me when trying to work 
the big pileups.  With TF-SET held I can click HDSDR (SDR panadapter) to set 
the TX VFO. I doubt I would do any better with a second receiver.

73,
Andy, k3wyc
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