I had the same problem with the K3/KPA1500 combination. I recalibrated the K3.
Then I made sure I don't run the K3 at exactly 5W or 50W. The problem has not
reappeared.N2TK, Tony
-Original Message-
From: Mikael Larsmark
To: elecraft@mailman.qth.net
Sent: Sat, May 20, 2023 3:45 am
Yep, service is still good. I sent out one of my K3's for a going over to make
sure it met factory standards and was up to date with mods before I sell it
since I now have a K4D. Priority mailed it on 5/18. Got an email yesterday with
the report and invoice that it is ready to ship back.
Fast
One of these days I will have the time to open up the box with the K4D to at
least see what serial number. Just been too busy.I have a pair of K3's, serial
#311 and 1435 that have been updated to as far as you can go to make them K3S'.
I want to sell one of the K3's. Even though they both work
I got way behind with my personal email so not sure if there has been follow-up
to this.
I have a K3/KPA1500. A final in the KPA1500 blew and took out the K3 too. Both
went back to Elecraft for repair. This was the third trip back for the
KPA1500.I was told the log showed over drive on the amp.
Hi Mark,N8LP sent me a note concerning the calibration of the LP100 at high
frequencies. I use the LP-100 as a reference. I just packed up the LP100,
cables and head to ship to Larry tomorrow. I have had it for a long time. Who
knows? I may have done something dumb with it. 3-5% is fine in my
menu item, there is a WMTR ADJUST menu item that
might be easier to use than the command tester commands.
73 de Dick, K6KR
> On Feb 5, 2022, at 10:33, N2TK via Elecraft wrote:
>
> If I measure the power out on my K3 (set to 100W), P3, LP-100 and KPA1500
> (power on but in standby), they all r
If I measure the power out on my K3 (set to 100W), P3, LP-100 and KPA1500
(power on but in standby), they all read quite close on 10-160M into a dummy
load. On 6M the P3 reads 16% higher than the other three. If I use 20W drive
from the K3 and put the KPA1500 in operate mode, the P3 and LP-100
Yep. And I keep the K3 on all the time.N2TK, Tony
-Original Message-
From: Larry Boekeloo
To: elecraft@mailman.qth.net
Sent: Mon, Jan 3, 2022 11:30 am
Subject: [Elecraft] KPA-1500 Power Supply
Do most of you leave your KPA-1500 Power Supply powered up all the time
even with the RF Deck
parameters
Hi Tony,
Sounds like you might have lost one of the LDMOS devices.
73
Dave wo2x
Sent from my waxed string and tin cans.
> On Jul 7, 2021, at 7:16 AM, N2TK via Elecraft
> wrote:
>
> Thanks Larry.Just wanted to confirm what I was seeing wasn't normal.All of a
>
7, 2021 4:35 am
Subject: Re: [Elecraft] KPA1500 parameters
25 in, 1322 out, 43% efficiency, 51.7 volts @ 59 amps with 1.5:1 SWR.
(see screenshot)
-larry (K8UT)
-- Original Message --
From: "N2TK via Elecraft"
To: "elecraft@mailman.qth.net"
Sent: 2021-07-06 23:48:2
What do you typically see for Power Out, Voltage and Current with 25 and 30W
drive on 20M?TnxN2TK, Tony
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Post:
conversation about it among the other
field testers. I just ordered one for delivery tomorrow and will give it a try.
73,
/Rick N6XI
On Wed, Feb 24, 2021 at 1:24 PM N2TK via Elecraft mailto:elecraft@mailman.qth.net> > wrote:
Will USB headphones/mike work in one of the USB ports?
Will USB headphones/mike work in one of the USB ports?
N2TK, Tony
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Hi Tim,
Yep, they are accepting repairs. Sent one of my K3's for repair and a full
checkout They added some mods. Happy with the fix, turn and price.
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of a4...@sy-edm.com
Sent: Monday, October 26, 2020 8:57
Hi John,
Both my KPA500 and KPA1500 are on a shelf in the basement, literally right
under my feet. The last time I shut them off was when I went to KP2M last
February.
If the power switch isn't on I can't tun them on from Elecraft's remote
software.
N2TK, Tony
-Original Message-
From:
When I had sent my K3 to Elecraft for a going over a few months ago, it was
returned it in a nice custom foam and cardboard box, which I have saved.
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Kimo Chun
Sent: Friday, October 9, 2020 10:14 AM
To:
As a reference, I have an 80M 4-sq with 5 elevated radials at each feed point
and use a Comtek box. The radials were 1/4 wave. The pattern was terrible. Very
little F/S and F/B. I measured the current in each radial. It was all over the
place. I followed N6LF's info and cut the radials to 42'.
Can someone answer this question?
Thanks,
N2TK, Tony
Here's a question for you:
Scenario: KPA-1500 **NOT** interfaced to a radio.
Set Up: KPA-1500 ATU in bypass. Mode is Operate.
Test:
1. Put amp on 14 MHz band by pushing the button.
2. Monitoring on another radio
Ted,
Make sure the large red/black cables are pushed on all the way. You should feel
a double click. If the light still is red suggest you contact Elecraft support.
GL
N2tK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Salvatore ["Ted"] K2QMF
Sent:
Bill,
That is what I was trying to remember what we used for cooling for the
electrodes in RF plasma tools.
Thanks
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Bill Frantz
Sent: Friday, July 24, 2020 9:56 PM
To: elecraft@mailman.qth.net
Subject: Re:
Tnx Paul
-Original Message-
From: W2xj
Sent: Thursday, July 23, 2020 5:08 PM
To: tony@verizon.net
Cc: Paul Christensen ; elecraft@mailman.qth.net
Subject: Re: [Elecraft] KPA1500 Cooling
glycol and anti freeze.
Sent from my iPad
> On Jul 23, 2020, at 4:49 PM, N2TK via Elecr
Hi Paul,
I can't remember what we used to use for closed loop cooling. I don't think we
used distilled water because it's resistance would increase over time from
picking up ions from the metal. In our case it was cooling loops in a copper
37" electrode. I thought it was some kind of antifreeze
I would like to comment a little about the shipment of parts. Our company is
a USA company making discrete semiconductors. We are considered essential.
So, we have been open throughout this pandemic.
We have a packaging and test facility in the Philippines for some of our
parts. Many component
Only ever got one QLF. In the late 1970's, two minutes to go at the end of the
PA QSO party and found the last mult to get a clean sweep. When I went to
send the key fell apart. Yanked off the wires and touched them together to send
call and info in CW. But I got him in the log and a clean
Now that was cool. Actually very hot
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of donov...@starpower.net
Sent: Friday, June 5, 2020 2:14 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Self-fusing liquid electrical tape
Hey Jim,
If you
All my ground rods are below ground level. I didn't want to take a chance of
failure so used 23 one-shots with #4 solid copper wire. Maybe that is one of
the reasons why I get away with never unhooking coax even when I watch
lightning strike the tower. One point ground for everything,
Walter,
Yes, the UHF connector may be rated at 500V, but in practice they handle >4KV.
The voltage limit is set by the air gap between the center pin and the shield.
I have not had a PL-259 arc over.
73,
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of
Jim,
Do you remember what ones you got for the CM500?
Tnx
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Jim Bruce
Sent: Wednesday, May 6, 2020 4:31 PM
To: elecraft@mailman.qth.net; tso...@icloud.com
Subject: Re: [Elecraft] Earpads Shedding
I went
I bought replacement ear pad cushions and earpad covers for Koss UR20,
headphones on eBay a while back for $14.24. They fit the CM500 fine. A pain to
change but worth it.
I have had very good results with CM500. They fit my head better than the
Heil's which were too tight. I would rather have a
I have been using Commscope F660BEF for years for both receive lines and
transmit coax for my 80M 4-sq using F-connectors. The other year I had a
100' piece of RG6 that had a solid copper center conductor and a copper
braid. Compared that to the F660BEF on 1.8 and 3.5 for loss at 100'. I did
not
John, I concur. When I am running them especially on 20M I find I have the
LO Cut at .35 and the HI Cut at 2.25-2.35. Audio is good. Below 2.25 if the
calling station is a little off freq or has terrible audio I may waste time
trying to get the call.
N2TK, Tony
-Original Message-
From:
Hi Frank,
I agree with what you said about CW rigs and lightweight rigs for traveling.
The K3 on SSB sure has its faults. What say you on the top SSB rigs?
Also, since no Dayton and the idea of a contest that weekend is a good idea.
But maybe we should consider some kind of virtual hospitality
Now you are making me drool
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Eric Swartz - WA6HHQ, Elecraft
Sent: Thursday, January 2, 2020 7:23 PM
To: Dave Erickson ; Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K4 Internal and External display
radio to the ground screw on the power supply.
73
Bob, K4TAX
12/22/2019 10:47 AM, N2TK via Elecraft wrote:
> I have been using an Astron SS-30M power supply for several years to
> feed two K3's.
> I use 12ga wire from the power supply to an MFJ-4012 power strip. From
> the power stri
distribution strip.
Each connection will have some voltage drop, so in addition to increasing the
wiring gauge, reducing the connection points will help just as much.
73 Merry Christmas, or Happy Hanukkah whichever you choose to celebrate.
Don W3FPR
On 12/22/2019 10:47 AM, N2TK via Elecraft wrote:
>
I have been using an Astron SS-30M power supply for several years to feed
two K3's.
I use 12ga wire from the power supply to an MFJ-4012 power strip. From the
power strip I use 12ga wire to each K3. Total length from power supply to a
K3 was 8'. Each K3 is set for 100W on 30M into a dummy load.
l" DX cluster.
On 11/13/2019 8:10 AM, N2TK via Elecraft wrote:
> Don,
> Tnx for the reminder on checking the audio on the ALC meter. It was so long
> since I had a problem I forgot about doing that. There was no audio shown on
> the K3. What happened is that in WSJT-X > Se
w
> spotting RTTY activity worldwide.
> For spots, please use your favorite
> "retail" DX cluster.
>
> On 11/13/2019 8:10 AM, N2TK via Elecraft wrote:
>> Don,
>> Tnx for the reminder on checking the audio on the ALC meter. It was
>> so long since I ha
- WSJT-X help
I have had this happen intermittently when using the KPA1500 with my K3S. I’m
pretty sure it’s an RF feedback issue with the PC + WSJT-X. Never happens when
NOT on FT8.
On Nov 13, 2019, at 7:04 AM, N2TK via Elecraft mailto:elecraft@mailman.qth.net> > wrote:
Scratch
ALC meter? It should be 4 with the 5th bar
flashing. If not, look at the audio levels.
See the article on my website www.w3fpr.com
73,
Don W3FPR
On 11/13/2019 7:04 AM, N2TK via Elecraft wrote:
> Scratching my head. I was making Q's on FT8 with my K3 and WSJT-X,
> v2.0.1 when I no longer woul
Scratching my head. I was making Q's on FT8 with my K3 and WSJT-X, v2.0.1
when I no longer would get power out.
WSJT is keying the K3 (Red transmit light is on) but no power out. The K3
keys fine with power out in CW or other modes is fine. WSJT is talking to
the K3. WSJT shows the correct
Was it a typo? (said in the voice of Jeff Goldblum)
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Dave Cole
Sent: Tuesday, November 12, 2019 1:10 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Teat
That is a funny typo...
73, and thanks,
Dave (NK7Z)
Hi Clay, Presently I have a pair of K3's. One is my main rig and one is my
backup and traveling rig. I will sell my one K3 and keep the other as the
backup and traveling rig when the K4 arrives.
73,
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of
Jim,
I feel like a newbie. Only 56 years for me. But I agree. When I haul the K3
to KP2M the only knobs I use when I am on frequency are the AF gain and RIT
for those who are off frequency.
N2TK, Tony
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Jim Brown
Sent:
Maybe provide an overlay picture when you take off the cover that looks like an
old tube rig including the tube glow?
Also, Elecraft can offer an option for those that feel a rig has to weigh a lot
to work - steel plates with the Elecraft logo in 5 and 10 lb. increments that
can be "stacked" on
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