In an earlier message on a different, but related thread:
http://elecraft.365791.n2.nabble.com/K3-SWR-Numerical-Indication-td7643839.html
I wrote:
"I would be surprised if two garden variety instruments, even placed at the same
point, would agree. The directional bridges/couplers in most
What are the error codes when you hard fault? Check them and see if there’s
any consistency.
I sometimes get hard faults when I’ve moved my rf deck, simply because the
PowerPoles on the 12v line from the power supply have moved a bit and aren’t
making a good connection. I usually see a 50v
I haven't seen a discussion of your grounding system or feedline length. 6M
can be picky. What does your ground system look like? Do you have any
common mode chokes on the feedline? Have you tried adding or subtracting
2-3 feet from the feedline? If it is exactly a multiple of 1/2 wave or 1/4
Are you using the same output connector on the KPA1500 for the dummy load and
the antenna?
Perhaps the problem is in one of the SO239s or in the KPA’s switching circuit?
Victor 4X6GP
> On 1 Jun 2020, at 4:30, Peter Dougherty wrote:
>
> Many here suggested that it was most likely a feedline
Good Evening,
Twenty meters was loud again with many signals. There was QSB and
nowhere to start a net. So I punched down my rising bread dough and
formed a loaf. There was time enough for it to rise and bake before the
second net. However, the smell of it was holding my attention.
New coax and old coax behaved identically. HOWEVER, running into about 80 feet
of old RG-213 and into the Cantenna dummy load and it doesn't fault. This is
the only condition on 6m where there is no fault. Brand new coax, old coax,
brand new antenna, old antenna, with balun, without balun.
To remove any doubt, a 1.5kw or close dummy load at the end of the coax
to replace antenna, would confirm the amp issue.
On 1/6/20 12:27 pm, Peter Dougherty wrote:
Paul, please re-read what I wrote. The 90W figure is with the amp IN
STANDBY! I wouldn't dream of putting more than about 35W into
Paul, please re-read what I wrote. The 90W figure is with the amp IN
STANDBY! I wouldn't dream of putting more than about 35W into the KPA-1500.
I generally like to run about 1200W on 6m, but even if I turn my K3s drive
down to 20 Watts, it will STILL hard-fault regularly. NO AMOUNT OF DRIVE
from
This is a brand-new balun from InnovAntennas, made specifically for this
antenna, received this past Thursday.
Note that exactly what I described was also occurring on my old setup, on an
antenna without a balun feed.
Basically everything from the output SO-239 on the KPA-1500 on up to the top
A few things I observe on my KPA 1500:
On 6m the KPA1500 reads 1.3/1.4:1 into a perfect load. FYI it reads
1.2:1 in to a perfect load on 10M also, but 1.0:1 on all other
bands.Elecraft have various excuses for this.
1500W its really pushing it on 6M. Way to much compression. I run
mine at
Balun? Is it new? What kind?
You have pretty much eliminated the KPA1500 with this test. This sounds like a
balun toroid heating up and causing problems.
You will see perfect conditions at low power, and the AA230 will also show
things in great shape. They are not stressing the system. But 1500
Many here suggested that it was most likely a feedline issue, and I figured
this was indeed a distinct possibility.
So this afternoon I replaced the feedline. I now have about 80 feet of brand
new LMR-400, new 83-SP1 connectors (and an Amphenol adaptor at the balun
since I don't have any type-N
It seems that Tamiya has their own Elecraft catalog. Interesting but
not near as interesting as OUR Elecraft. Just search for Elecraft and
Tamiya on the auction site.
73 - john - n0hj
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Here's a question concerning using the KXPA100. Is it best to run the
amp in manual, like the higher powered amps, or run in auto? I always
hit the atu button when changing bands, but sometimes in auto it will
drop power, and the swr is up a bit. I couldn't find any reference to
this, but
On 5/31/2020 9:54 AM, Jim Miller wrote:
Have you vetted your feedline at 1500w? Many times something might be good
at low power and fail at 1500.
This is good advice. Guys who do lots of portable setup say to always
check the coax first, which mostly means check for a connector that's
bad or
listening on 3.940
On Sun, May 31, 2020 at 7:48 PM Ken Roberson wrote:
> Monitoring 3875 KHZ - Ken K5DNL
>
> On Sunday, May 31, 2020, 5:18:53 PM CDT, Paul Van Dyke <
> pvandyke1...@gmail.com> wrote:
>
>
> Unfortunately, propagation really doesn't start in my area till 2400. It
> would change
Peter, how old is your amp? I have s/n 153, and had a similar issue on 6. One
of the torroids in, I believe, the low pass filter, ultimately burned out.
Smoke smells from your amp are not pleasant. The factory determined that the
torrid was delivered out of spec, and it was replaced. I suggest you
Thanks for running the net Steve. Paul - thanks for the relay.
Paul had a lot of trouble copying me which isn't too surprising.
He was very strong at S6 until the QSB got him but he always
popped back up. My details:
AE6JVBill NH KX3
I was running the KX3 on an external battery at 15
They originally sent me a load resistor that looks like a TO220 style
transistor. That connects to PSU 50 volt output to have some load on PSU when
in standby, this reducing birdies on 80 meters.
They are sending me another parts (resistor?) to lower PSU fan speed which when
idle PSU fans
Unfortunately, propagation really doesn't start in my area till 2400. It
would change the WW Net to strictly a local net. And 3.825, has a major
net at 24:00. So right now I'm looking at 3.875
Paul KB9AVO
On Sun, May 31, 2020, 5:55 PM Jan wrote:
> Hi Paul, KB9AVO in n.e. Indiana
>
> Will you
Sunday, 1845Z 7280 kHz
Due to band conditions not all info is available and may contain errors.
WM6P Steve GA K3sNet Control
KB9AVOPaulIN K3s
K5APL WesAR K2
K4FBIMikeVA K3s
W4DML Doug TN K3
AE6JV Bill
I am still a bit confused by this, as I thought I was installing both--it
consisted of two parts. Please share what you hear from Support.
73 Eric WD6DBM
On Thu, May 28, 2020, 1:21 PM Dave wrote:
> Hi Lou
>
> I think the PS minimum load kit is different than the resistor change to
> slow down
Rule out or in the feed line. Put the amp into a dummy load and see if it
trips. Good Luck.
73/Gary W2CS
> On May 31, 2020, at 12:54 PM, Jim Miller wrote:
>
> I run 1500w for JT65 EME. No problems. My antenna measures 1.4:1 on the
> KPA1500 swr meter and therefore never engages ATU.
>
>
Hi
I've seen parts of the programming interface and it looks quite good. I
think the K4 is posed to be one of the leading transceivers on the market
with its open, and well documented and supported programming interface.
Bring it on!
73 Tom va2fsq.com
-Original Message-
From: Wayne
Correct.But But the world is so sane now If there is day that is
better than other, please let me know all of you
Paul KB9AVO
On Sun, May 31, 2020 at 2:31 PM Wayne Burdick wrote:
>
> > it will shake the spiders out of your 80 meter coils
>
>
> And tip the balance of 75 m a bit in the
> it will shake the spiders out of your 80 meter coils
And tip the balance of 75 m a bit in the direction of sanity, if we're talking
about an SSB net.
Wayne
N6KR
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WELL
I did the Sunday afternoon guess as I thought it might be a good time ...
After 2300Z would be much better. Is there any day better for the most of
you?? ... it will shake the spiders out of your 80 meter coils
Grin
Paul - KB9AVO
On Sun, May 31, 2020 at 1:56 PM Steve Hall
Glad to hear you got it working. But you shouldn’t be seeing a signifiant
difference between the two receivers, unless something is set differently
between them, or there’s another issue floating around.
Grant NQ5T
> On May 31, 2020, at 12:36 PM, Gareth M5KVK wrote:
>
> Well, I’ve solved
There has been discussion about a possible 80 meter net.
I am going to see what interest there is and activate at 1900z on 3.920
and see what interest there is. I'm seeing the Freq is clear, but that may
change.
Hope to hear you at 1900 (or after the 40 meter net)
If you have comments please
I run 1500w for JT65 EME. No problems. My antenna measures 1.4:1 on the
KPA1500 swr meter and therefore never engages ATU.
Have you vetted your feedline at 1500w? Many times something might be good
at low power and fail at 1500. neither the AA230 or K3s will stress such a
feedline.
I believe the
Hi all (and sorry about the blank post-I don't know what happened there).
I am experiencing a continuing and repeatable problem with my KPA-1500 on
6m. With the amp in bypass I am able to operate normally with my K3s, but
the amp's meter is showing a 1.8 to 2:1 SWR on that band, despite
Well, I’ve solved the initial problem. I stripped the rig back to its pre-KRX3A
state and then re-installed: after checking performance.
I can only surmise that there was a poor connection somewhere, as basically all
I did was re-installed some TMP cables.
The performance of the SUB is poorer
I have an odd problem and I'm not sure what I am doing wrong or what is
not set correctly.
The KX3 combo will not key my Acom 2000a. it was working 160-20 but now
seems to be fubar everywhere. I was using the rig/amp to generate 30-40w
out put to drive the big amp. I'm not sure what I have
On 5/30/2020 8:52 PM, kevinr wrote:
14050 kHz at 2200z Sunday (3 PM PDT Sunday)
I would not expect this to a happy event, in the waning hours of WPX CW.
That ends at 00Z, so the 40M net should be fine.
73, Jim K9YC, KU6W in WPX
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