This is a new (but not my first k3). It has the KPA3,
KAT3, KRX3, KXV3A and P3. I have 2 antennas connected to the KAT3. Ant1 is a
beam, Ant2 is an 88’ long dipole fed with ladder line to an Elecraft 4:1 balun
then with coax to the rig. The KAT3 normally tunes it 1:1 on 80/40/30/20, which
are the
Don't forget the 'quality of PL259 plugs' issue that's has been mentioned on
here before. A while ago I nearly pulled my amp apart to check the input
relay to see if that was the cause of my intermittent 'Hi SWR' and no rx
signal problem. Problem was an intermittent mating of the PL259 centre pin
Guy and Don made the right call. Thanks, I was off on a tangent and not the
right one for sure.
I have another 88' foot long dipole which we use for our CW station at Field
Day. So I strung it up in a temporary location and bypassed the other dipole as
a test. No more HIGH SWR message. It
On Tue, Nov 1, 2011 at 9:24 PM, Joe Ford k4...@yahoo.com wrote:
... I'll take down the ant and inspect it.But it works fine on all the other
bands. Tunes with no problems all other bands. The KAT100 tunes but the KAT3
doesn't?
Tuning all bands using a single antenna is always dicey
Guy,
Thanks for the tips. My coax jumpers are some I bought from a company I don't
remember exactly which one. It was one that I saw recommended somewhere.
Unfortunately the PL259s are crimped on but they seem to work okay. Just to be
sure, when I was troubleshooting the problem I replaced the
There is nothing wrong with crimped connectors if done properly. Is
this an antenna that was working fine and then stopped on one band with
absolutely no changed in the shack or coax etc? What band is out of
whack...I apologize for missing most of this thread.
Mike W0MU
J6M CQ WW DX CW
Mine is a new (but not my first) K3. It has the KPA3, KAT3, KRX3, KXV3A, and
P3. I have 2 antennas connected to the KAT3. Ant1 is a beam. Ant2 is an 88'
long dipole fed with ladder line to an Elecraft 4:1 balun then coax to then K3.
The KAT3 normally tunes it close to 1:1 on 80/40/30/20m, the
On 11/1/2011 1:51 PM, Joe Ford wrote:
A few days ago, I heard a DX station working a pileup on 30m. I
pushed AB, Split, then Sub. When I keyed the K3 to call the DX I got
the HIGH SWR message. Now whenever I tap ATU TUNE, the SWR maxes out,
the relays go crazy and it tunes to about 2:1 and
Thanks, Fred. But no I was on the right antenna. I tried all kinds of things.
And a couple of times I got back to where it was tuning normally, but as soon
as I turned on the sub-receiver and tried to transmit, I would get the HIGH SWR
message and after that if I did a tune it would not go
Probably not the best thing to assume first that the trouble is in the
rig. Odds are really against you. Antenna is outside, subject to all
kinds of strain that can part conductors, even inside insulation so
you can't see it, getting water in coax, pulled around by the wind,
etc, etc, ad nauseum.
I agree fully with Guy. Most problems of that nature are an antenna
problem.
If you have an antenna analyzer, connect it to the PL-259 that you
normally connect to the K3 - do not add or subtract any coax. Then read
the impedance (R and jX, not just SWR). If it is extremely high or
Guy, Don
I don't get the emails just the digest show your emails to me.
I agree the antenna should be the first place and in fact I did look at it
hanging in the air but I have not lowered it to give it a closer inspection.
Unfortunately my antenna analyzer is one MFJ's first and only
Joe,
In addition to the antenna check out, try replacing the patch cables from
the K3 to the switch as well, you may have an intermittent there or poor
bonding to the shield (a common problem, making effective coax connector
bonds is a learned art).
I think you said you were using a balun to the
Joe,
You results seem to be erratic.
Loose PL-259s can cause symptoms like that. Finger tight for PL-259s is
not good enough, the connectors must be seated in the notches, and after
finger-tightening, must be torqued a bit more with pliers to obtain a
secure connection. The connection to
Good catch Don. And it should be noted that not all PL-259 mate properly if
the outer shaft of the SO-239 (or barrel connector) is too short. It should
be seated, tight and with no movement in any direction. Though I don't use
pliers; I just crank on it and check them periodically.
Rick WA6NHC
No problems here, using also 3.41 and HRD Version 5.0 build 2306.
73 de Roland, DC1RS
-
K3/100 #1243
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tom kenville wrote:
Problem has surfaced when running (it seems) with HRD. HRD Ver 5.0 build
2290 Beta
In particular CW. Seems that the paddle and straight key are
mis-behaving.
Skips early part of break in. perhaps the first 20-30 msec ?
Example: sending W6TJK is get W6D..
I flashed the new FW last nite.
uC 3.41
dl 2.37
fl 1.04
Problem has surfaced when running (it seems) with HRD. HRD Ver 5.0 build
2290 Beta
In particular CW. Seems that the paddle and straight key are mis-behaving.
Skips early part of break in. perhaps the first 20-30 msec ?
Example: sending
Hi all,
When K3 #321 is switched off, it automatically switches on again.
No error message, and all other functions seem normal.
Of course it stays off when the power supply is removed.
Alongside it, K3 #320 (both share the same 13.5v supply) operates as normal...
Anyone on the list
Anyone on the list experience this problem before?
Yep. Not me, but here is the description of the KPA3 12V sense mod
on the Elecraft website:
This modification adds a diode to the KPA3 12V sense circuit to hold
the voltage to no more than 0.6V when the K3 is turned off. Without
it, some K3s
Have you tried setting Config: TXG VCE to 3.0dB?
It did not solve the problem. But as I said, at least the recent
frimware has been much better.
vy 73 de toby
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Hello Lyle,
I personally am not experiencing the low SSB output on any band, but I am
considering going from the 2.7K filters in the K3 and KRX3 (matching filters)
to the 2.8K filters. I may be asking for trouble by doing this. Is there any
indication as far as you know that the filters may
...Is there any
indication as far as you know that the filters may be a part
of the 10 meter SSB output power problem?
The problem I have been aware of is the LSB/USB power output difference.
That seemed to be confined to 2.7 kHz filters, was related to the
center frequency offset, and
I have the 2.8 filter installed so the problem is not limited to the 2.7.
Mike/aj9c
Lyle Johnson [EMAIL PROTECTED] wrote:
...Is there any
indication as far as you know that the filters may be a part
of the 10 meter SSB output power problem?
The problem I have been aware of is the
Hi Lyle,
I do not know if we all might be talking about various ills with similar
symptoms. It might be that more than effect might be behind the various
observations, imho.
What I have, to the best of my memory, observed in various firmware
versions is that there is/was a tendency for the
Toby Deinhardt wrote:
Hi Lyle,
I do not know if we all might be talking about various ills with
similar symptoms. It might be that more than effect might be behind
the various observations, imho.
What I have, to the best of my memory, observed in various firmware
versions is that there
Friends,
maybe we have to sort problems with SSB power level to permanent
problems and temporary problems.
Permanent lower level is possible to cure via VCE gain setting (I
suppose hope).
Temporary problems are more complicated. I remember my problems with
miliwat output levels via KRX3 vith
Temporary problems are more complicated. I remember my problems with
miliwat output levels via KRX3 vith certain version of F/W,
correction - should be KXV3
my waiting for KRX3 is so intensive
:-)
L. -dst-
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I have previously documented the SSB power drop problem to elecraft and
understand it's on Wayne's list to resolve. I used the 2-tone test and
adjusted the 2-tone peak power to equal CW TUNE power (using an LP-100A). I
found three things trigger the SSB power drop: 1) a power change even if you
If this has previously been discussed - please forgive me.
This weekend ten meters was open (as much as it could be at the bottom of a
cycle) and the 10-10 contest gave me a great opportunity to try out the 10
meter band on my recently completed K3 #1318(latest firmware). All seemed well
until
I saw the same thing too. The problem seemed to be on the other bands also. I
got about 70w out but had to turn the mic gain all the way up. This isnt right
to have to hit it this hard to get output. I had a local listen to the signal
and until the mic gain was all the way he didnt think I
#1318(latest firmware). All seemed well until I noticed that my
power output on SSB was down as indicated on the K3 power meter and
where I normally see 100 watt pep output on my tuners average
reading meter. So I grabbed my Bird 43 (with PEP option) and a
dummy load. Sure enough,
I have been having a similar problem on 30m through 160m. Output is fine on
CW on all bands. On SSB, I am gettting only about 50 watts on those low
bands.
It appears to be hardware related, at least in my case. I have been doing a
lot of remote troubleshooting with Gary Surrency, and at this
Hi John,
can you - and the rest of suffering by this problem - put here some
more details about your setting:
- POWER per Band active?
- TUN PWR -nor- or any value defined?
Just to have complete picture.
Did you try to chenge some settings with some change in behaviour?
Thnaks,
Lexa, OK1DST
For me this problem exists. ATU bypassed. Pwr to 100w. Everything is nor.
Antenna is c31xr swr 1 to 1.1. also testd with dummy load.
Alexandr Kobranov [EMAIL PROTECTED] wrote:
Hi John,
can you - and the rest of suffering by this problem - put here some
more details about your
I have the same problem on LSB 40 meters.
Oms PY5EG
-Original Message-
From: Alexandr Kobranov [EMAIL PROTECTED]
Subj: Re: [Elecraft] K3 - Strange problem on 10 Meter SSB with power out
Date: Mon 4 Aug 2008 14:42
Size: 3K
To: WA6L [EMAIL PROTECTED]
cc: elecraft@mailman.qth.net
Hi
The problem has been consistent across many configuration changes. TUN PWR
is set at 100, though I tried it at several settings. Power-per-band is not
active.
To test, I use the built-in 2-tone generator that you can enable in the
configuration menu. That is very handy for testing audio
If you experience this problem (low output on SSB), please check if the other
sideband works OK, and note if you are using the 2.7 kHz 5-pole filter or the
8-pole 2.8 kHz filter.
Finally, please try the latest beta firmware.
73,
Lyle KK7P/7
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