Good Evening,
High haze came in. Better contrast would be nice because a comet
looks like a stream of smoke. Last night I found Neowise under the Big
Dipper but it was noticeably fainter than two days before. It will be
visible in binoculars for another few weeks.
Conditions were
The K4 defaults to K3/K3S auxbus protocol, ensuring compatibility with a
KPA500, KAT500, or KPA1500.
It will only use the new protocol if the amp or tuner has been configured to
use K4 mode.
73,
Wayne
N6KR
> On Jul 19, 2020, at 7:33 PM, AL7CR wrote:
>
> Can you please confirm this means,
Andy (K3WYC) wrote:
> I still don't see the advantage of AUX bus giving the KPA1500 the TX
> frequency to 1 kHz resolution. What am I missing?
Hi Andy,
The improved resolution ensures that the correct bin is detected when you get
within +/- 1 kHz of the target ATU LC data bin rather than
Does anyone know if these parts are a recent change? My pal is sending me his
board and it did not have these parts. The heat sink was attached to the case
directly with a metal screw and the nylon screw was not present and the hole
for it empty.
If the parts are strictly required I will try
On 7/19/2020 8:13 PM, Andy Durbin wrote:
I still don't see the advantage of AUX bus giving the KPA1500 the TX frequency
to 1 kHz resolution. What am I missing?
At this point in time, it may not matter. But who knows how we will be
using our radios 10-15 years from now? The early K3s on my
The K2 is now sold, pending receiving and clearance of the money order.
Thank you and 73, Steve - KI4EZL
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Post:
"How does that help anything if the tuner bin width is 8 kHz? "
I had confused the rf frequency detect counter resolution with the bin width.
For KAT 500:
Below 3 MHz the segments are 10 kHz wide.
>From 3 MHz through 26 MHz the segments are 20 kHz wide.
>From 26 MHz to 38 MHz the segments are
That’s not at all what it means. K4 interfaces via AUXBUS with KPA500 and
KAT500 as a K3.
73 de Dick, K6KR
> On Jul 19, 2020, at 19:35, AL7CR wrote:
>
> Can you please confirm this means, at present, that the K4 does NOT
> interface with the KPA 500 and KTA 500 via the Auxbus. If so, that
I am looking for recommendation for a compact switching power supply product to
recharge my KX3 via the installed KXBC3. I had been using a Bioenno external
battery pack, but have decided to start using internal NiMH batteries when on
the road.
73,
Dave
KA1DA
Can you please confirm this means, at present, that the K4 does NOT interface
with the KPA 500 and KTA 500 via the Auxbus. If so, that is a major
disappointment. I presume operation is still possible in the frequency sensing
mode as it is with non Elecraft amps. Just writing that last
I have a very good K2 for sale. It has been to visit Don Wilhelm W3FPR twice
before he retired from working on K2 radios. He upgraded the radio, gave it
the latest versions, and made everything perfect. He also built the I/O serial
style usb cable adapter plug and cable that attaches to the
Bill,
Before it can be "fixed" in the K4, the logging software has to be fixed to
send the proper KY command. If it is sending KY*somes-string*;,
then the messages are not going to be chained. If it is sending KYW
*some-string*;, then the messages should be properly chained, perhaps with
a very
It sounds like an antenna connector problem .
Sent from my iPhone
> On 20 Jul 2020, at 02:53, w5...@comcast.net wrote:
>
> ok I'm going to be answering several of your suggestions at once here.
>
> First, when I powered off last night, I used the power button on the K3
> itself, I did not
"Those using a K4 transceiver with our KPA1500 amp will have the advantage of
+/- 1 kHz resolution in VFO tracking. "
How does that help anything if the tuner bin width is 8 kHz? I could provide
any frequency update resolution I wanted with my controller but I chose to
limit it to 8 kHz to
Using AC6LA's Line Loss calculator, and making the following assumptions:
Line impedance: 420 ohms, (1/4" copper pipe spaced 4 inches apart)
SWR at antenna: 14.0 (Z = 30 ohms)
Line attenuation: 0.0266 dB/100 feet (Duffy, "RF Two Wire Transmission Line
Loss Calculator",
I think there’s a problem with the instructions. I could not hear a signal
when the VFO was set 16 KHz above the KX3 frequency with RIT off as you say.
But you will hear it with RIT turned on.
Grant NQ5T
> On Jul 19, 2020, at 5:02 PM, Mike Parkes wrote:
>
> I am trying to perform only
I am trying to perform only page 5 of the RX sideband null procedure, and
and have a question. (My KX3 is a later serial number 9852 and according to
the RX sideband null A8.doc, most of this nulling procedure was performed
when the KXFL3 was installed by Elecraft, the only part not done(?) is the
Those using a K4 transceiver with our KPA1500 amp will have the advantage of
+/- 1 kHz resolution in VFO tracking. In many stations, this finer resolution
will result in lower SWR and improved amplifier performance, especially on the
lower bands. (The original resolution was +/- 8 kHz.)
This
Glad to hear you got the problem solved, Ronnie,. A properly seated TMP
connector isn’t like to just pop out, even with the rigors of shipping. So
it’s a better than even bet it wasn’t properly seated to begin with. If
shipping actually did that to a seated TMP connector, you probably
God knows how much they beat the radio in shipping!
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 7/19/20 10:30 AM, w5...@comcast.net wrote:
First let me thank each and every one of
Before doing that be sure your connections are secured to antenna and it is
working.
Have a great day!
Bill
From: elecraft-boun...@mailman.qth.net on
behalf of Victor Rosenthal 4X6GP
Sent: Sunday, July 19, 2020 12:00:19 PM
To: elecraft@mailman.qth.net
Ronnie,
a few months ago I had the same problem when my K3 #1184 was on for
about an hour. No RX, and no TX output. The KSYN3A synthesizer seemed to
have lost contact with the rest of the K3 and it gave different error
codes. The problem has finally been solved by disassembling the complete
Tom,
a few weeks ago the PA temperature of my K3 #1184 jumped between 32 and
41 degrees Celsius during receive, and the fans went on and off. The
problem went away after dismantling the K3 completely for another
problem and the fan/temp problem has vanished. Maybe some loose
connector had
Hi,
FWIW.
Test conditions measured under the K3 DISP menu:
14.1V
1.38A Sub RX on
PA 32C
FP 40C
PA fans off
PA fans on/off at 36C/35C
Room temp 22C
K3 FP and PA temp sensors calibrated against a laboratory thermometer
adjacent to the K3.
Never really noticed when the PA fans come on in
More than just them. Steve, K6OIK, who has presented at a number of
past Pacificons speaks about the Myths of Conjugate Matching in a
Pacificon presentation from 2011 at
https://www.fars.k6ya.org/docs/Conjugate-Match-Myths.pdf It begins on
page 20. This is Dr. Stearns home turf, it can be a
First let me thank each and every one of you for your suggestions.
Victor, 4X6GP suggested I check all the small cables going in and out of the
Synthesizers and THERE IT WAS!! One of them was completely out!! Plugged
it back in and all is well!!
Man you guys are great!! Thanks so much for
I had the same issue and it was a bad connection on the TMP cables. I just
reseated all of them and all has been OK for me. I hope I didn't just jinx
it.
Mike
KK9V
On Sun, Jul 19, 2020 at 12:54 PM wrote:
> ok I'm going to be answering several of your suggestions at once here.
>
> First, when
I suggest that you call Elecraft Support on Monday. I'm sure they have a
diagnostic procedure that they can take you through on the phone. Even
if there IS a failure somewhere, chances are that you can fix it
yourself with their help.
Just guessing, but I suggest you open it and make sure all
ok I'm going to be answering several of your suggestions at once here.
First, when I powered off last night, I used the power button on the K3
itself, I did not kill the power supply first
The sub RX has been turned off and the RX Ant is NOT selected. Ant 1 is
selected and the Antenna IS
Ken -
You are absolutely right, and I totally agree that there needs to be
something to compare to in order to evaluate performance in a meaningful
way. My mistake was in assuming that my judgment, after 50 + years of doing
this, would be accepted without laying out all the details, especially
The K3 can get antennas in a bewildering collection of ways. If
the RX antenna switch is on -- and this was my way of getting on
reception -- it might be your problem. The K3 can also send
received signals out on one of the BNC connectors and expect to
get them back on another.
I recommend a
yes sir.. using antenna port 1 and have it selected. HOWEVER.. I did move the
antenna to port 2 and selected that port to no improvement. Same issue
Ronnie
From: Ian Kahn
Sent: Sunday, July 19, 2020 11:09 AM
To: w5...@comcast.net
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3 Issue
First thing I'd check is to verify you have the correct antenna port
selected. I have yet to meet any K3 owner who hasn't made that mistake at
some point, your's truly included. ;-)
73 de,
Ian, NV4C
On Sun, Jul 19, 2020, 12:05 PM wrote:
> Good Morning
>
> I purchase a used K3 a couple of
Good Morning
I purchase a used K3 a couple of weeks ago and received it last thursday. I
hooked it up and it worked GREAT. Used it for SSB and CW contacts on 80M
and ssb on 10M. Shut it down about 8pm last night. Turned it on this
morning, and it has white noise audio but receives no
Tom,
Interesting post. I thought this was the case with my K3 also, but i
figured out later that it was the fan in my power supply instead. Poor
hearing!
-de John NI0K
Tom Doligalski via Elecraft wrote on 7/19/2020 8:41 AM:
I am the original owner of K3/100 #969, which still works great.
I am the original owner of K3/100 #969, which still works great.
I’ve noticed that recently the cooling fan comes on occasionally even if the
radio is on, but not in use (volume down, no transmitting). FP temperature
shows 41 C, and PA temperature is at 35 C
This is not at objectionable at
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