Mike K8CN wrote
*< It wouldn't have occurred to me to look atthe LPA stage as a source of
trouble, but ifthe TX power is ramping up slowly, then I cansee where the
ATU control algorithm isconfused by the change in power levels bothforward
and reflected. My ATU seems
Mike (K8CN) and others - thanks for your inputs. I'm talking to Paul at
Elecraft Tech Support who, by the way, is being most helpful.
He reckons I have a problem with the Low Power Amplifier which takes a few
seconds to come up to full output power. I'm not at all sure how that
affects the SWR
*You can set TUN PWR in the K3 Config Menu to something other than 5
watts.73,DrewAF2Z*
Drew,
Page 60 of K3 Owner's Manual states: "TUN PWR Note 1: *TUN PWR* does not
pertain to *ATU TUNE, *which always uses 5 or 10 W and is internally
controlled"
Does anyone know how to change the 'internal
David G3UNA
>
> > On 07 December 2021 at 11:59 Tom Boucher wrote:
> >
> >
> > Thanks NK7Z, NK7I and K8CN for responses.
> >
> > Dave and Rick indicated that running the K3 at a higher power level
> during
> > the ATU Tune sequence might solve the probl
Thanks NK7Z, NK7I and K8CN for responses.
Dave and Rick indicated that running the K3 at a higher power level during
the ATU Tune sequence might solve the problem however, as far as I can see,
the power level is fixed at 5 watts during auto tune and cannot be altered.
Mike, there is no problem
Dave (NK7Z),
The K3 performs its auto-tune sequence at a power output of 5 watts I
believe.
73,
Tom G3OLB
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I'm wondering if someone can help with a KAT3 ATU problem on my K3
S/No.01434?
When bypassed, the K3 SWR indication agrees with that on an external SWR
meter. This is also so when the KAT3 is replaced with a KANT3 board. When
in AUTO mode it goes through its relay rattling sequence for each band,
Does anyone have an SVGA board for the P3 Panadapter for sale?
Thanks,
Tom G3OLB
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Wayne's problem with a tree eating his wire reminds me of an incident some
years ago when I was attempting to get an antenna halyard over a tall oak
tree. I used some braided nylon cord with a probable breaking strain of
several hundred pounds, which was attached to a drilled golf ball.
My
Just a note to those that may be interested:
For the last two days, signals from ZL3IX at Eu sunrise have been peaking
S9. This morning Greg was a good 579 running just 20 watts, before he
turned his amp on.
73,
Tom
G3OLB
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After deliberating for years about my ability to change the 28 way
motherboard to front panel connector on my 10 year old K3 for a gold plated
one, I finally plucked up the courage and did the job in about 2 hours.
Elecraft supplied me with a replacement connector some years ago. I have to
say it
Paul NA5N - the Ten Tec Triton IV was available in 1976, which is when I
bought one from 'Ham Buerger' in Philadelphia, where I lived at that time.
As you say, it was the first 100 watt solid state rig with full break in.
73,
Tom G3OLB
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Can anyone tell me at what point (Date-S/No.) Elecraft started fitting gold
flashed connector pins on the internal connectors? A member of our contest
group is interested in buying a used K3 and I have advised him not to get an
older one because of the connector reliability issues.
Thanks,
Tom
Fred,
If your inverted 'L' was a bit less than a quarter wave long, it would have
been capacitive and showing 57-j130 (not plus). In which case you needed a
small inductor to match it to your 50 ohm coax, not a capacitor.
73,
Tom G3OLB
Brian,
I think Jim is more concerned about his beverages losing their directional
properties due to re-radiation of received signals from his transmit antenna. I
don’t think there is a simple way of doing this and it’s probably best to
abandon QSK operation when using the beverages and use a
I've had a Pioneer plasma for the past 12 years without any trace of noise.
Admittedly all my receiving antennas are sited over 300 feet from the house.
73,
Tom G3OLB
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Jack,
Each time I have had problems with my K3, including the one described by
yourself, I have fixed it by removing the front panel, carefully cleaning all
connector contacts and re-assembling. I put a thin layer of 'Contralube'
(Maplins) on the connector pins which not only keeps the
What bothers me about putting the actual antenna wire across the tree is that
it is then very close and in fact touching the tree. I'm not sure what loss the
tree would cause by having it so close.
My inverted-L is held 85 ft up in an ash tree by nylon rope. I have a rope and
insulator near
Sorry! Wrong reflector - was meant for the 160 one
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This list hosted by:
The Koss SB45 (as opposed to the SB40) DOES contain an electret mic insert. I
find this headset very good as an alternative to the Yamaha CM500 which, for
some inexplicable reason, is unobtainable in Eu.
73
Tom G3OLB
GM4LMH wrote: The Koss SB40 is fine with the K3 if you remove the nasty
Jim (KG0P),
These error displays sound similar to ones I get from time to time. Remove the
front panel and carefully clean all the connector pins. Then apply some
connector lubrication before replacing the panel; we have some stuff called
'Contralube' over here. An added benefit is that you no
Dave G3TJP,
Re your post on non-availability of cheap headphones, the Yamaha CM500 is
undoubtedly a preferred choice but is unavailable in Europe - the US suppliers
won't ship it to Eu either. A good alternative I found for my K3, is the Koss
SB/45, which is quite comfortable during long
Yes Richard, this has happened to my K3 several times, always when the volume
is too high and a loud burst of audio occurs.
73
Tom G3OLB
My friend Simon, HB9ATG has a strange problem: While listening in split
mode, suddenly a relay clicks and the K3 switches back to mono, i.e.
CONFIG:SPEAKERS
Yes - have been using the K3/Titan III combination for several years with no
problems. Not using any ALC connection of course.
73
Tom G3OLB
Message: 23
Date: Sun, 6 Jan 2013 14:18:40 -0600
From: W4SK w...@comcast.net
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 Amp Interface
Message-ID:
Yes, K3 'Key Out' to Titan 'PTT/VOX' only.
I don't use the 'Key In/Key Out' QSK feature on the Titan, but I have slowed
the K3 Tx Delay to 12mS (CONFIG:TX DLY:12) although the Titan relays are
probably fast enough for the K3 default setting of 8mS.
73
Tom G3OLB
From: W4SK w...@comcast.net
My theory in these cases is that it's nothing to do with bad antenna
connections, but more due to the rig putting out a higher harmonic content at
higher power levels. The SWR meter sees a bad SWR at the harmonic frequency so
the reading is slightly worse.
73
Tom G3OLB
N3OI wrote:
*One
Tony - There is a 'Voice Tx Fast Monitor' facility which overcomes this: Set
CONFIG: TX MON to FAST
Tom G3OLB
Don't know what I may have changed, but when I transmit using SSB - there is
a terrible echo ringing in my headphones - ideas?
- Tony, N3ME -
Someone recently posted about a delay in the audio sidetone while on SSB.
Remember that F/W update 4.22 included a 'Voice Tx Fast Monitor' function:
CONFIG: TX MON set to 'FAST' then you don't get the un-nerving delayed audio.
This was something I asked for a while back and was subsequently
The other thing to watch when using lead weights is to be very, very careful
pulling back the line when it goes over the wrong branch. I literally shot
myself in the foot when doing this some years ago. Crutches for 6 weeks!
73
Tom G3OLB
Mike,
This is the quote from the Yamaha CM500 advert on Amazon:
In Stock.
We are not able to ship this item to your default shipping address.
73
Tom G3OLB
Amazon ships worldwide, with some restrictions. Their site says the
Yamaha CM500 qualifies (consumer electronics).
Here's a link to
Paul,
The Yamaha CM500 is undoubtedly a good choice but is unavailable in Europe -
the US suppliers won't ship it to Eu either. A good alternative I found, is the
Koss SB/45, which is quite comfortable during long periods of contest operation
and has an excellent quality electret mic. It only
Not true Pete:
CONFIG: CW WGHT and tap '1' until you see 'SSB+CW'
73
Tom G3OLB
Besides, you can't key the rig if you're in ssb.
Pete, W1RM
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The advantage is you can go to WS, look at and try the rig, then purchase it
direct from Elecraft!
73
Tom G3OLB
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Ed,
Don't forget there is a High/Low mike gain setting (MAIN:MIC SEL Tap 1 to
toggle High/Low). Probably not much use to you unless it can be somehow
selected for FM only.
73
Tom G3OLB
KL7UW wrote:
So I wonder if there is an internal mic gain pot that can be adjusted
for FM?
An alternative K3 headset in place of the Yamaha CM500, which appears to be
unobtainable in Europe, is the Koss SB45. I just bought one of these from an
internet supplier for 20 pounds (about $30) and it seems quite comfortable and
it does have an electret mic element, not a dynamic one. The
Dave,
It's worth removing the front panel assembly, cleaning the connector pins,
applying some 'Contralube' (obtainable from Maplins) to the pins and
re-assembling.
A year ago I had all sorts of problems with my K3, including that which you
describe. The above measures completely fixed it.
Hello Paul,
I have had a similar fault. Occasionaly at switch-on, there is no audio from
the speakers. If I insert and remove the phones into the front jack, the audio
returns. I've also fixed it by turning power OFF and ON. As Don says, probably
a glitch in software.
73, Tom G3OLB
ZL4PW
Wayne, the annoyance factor could be reduced by ANDing the flashing 'Delta-F'
light with the red 'Tx' light. That way it would only flash a warning when
transmitting.
Thaty's what I like about Elecraft, an instant response even on Sunday 1st
January!
73
Tom G3OLB
N6KR wrote: That said, I'll
I guess Elecraft are now beyond wanting to make relatively minor changes to the
K3 as it is now a mature product, but how about this? On two occasions recently
I have been in QSO with a weak distant station on 160 or 80 and a very loud EU
has come up on the same frequency with a QRL? On my
Jim,
Don't know if you have solved this problem yet but it was one of the symptoms I
was getting, amongst a lot of others, back a few months ago. Turned out to be
corrosion on the front panel connectors - my shack gets cold and damp in the
winter. I removed the front panel assembly, cleaned
A warning.be careful using a golf ball to put your antenna over a tree.
I did the same thing about 15 years ago, except I drilled the golf ball and
tied braided nylon cord through it. Inevitably the ball got stuck in the 'V' of
a branch so I heaved on it, winding the cord round a piece
John,
I had similar problems for a long while which were all solved by removing the
front panel, cleaning the 4 connectors and applying some electrical lubricant
(Contralube) and re-assembling.
Good luck!
Tom G3OLB
Message: 35
Date: Wed, 4 May 2011 22:28:29 -0400
From: John Shadle
Mike,
This was one of the many different symptoms I had as a result of bad contacts
on the 4 front panel connectors. Remove the front panel, not forgetting to take
out that 3D block screw on the left hand side, give the connectors a good clean
and apply a thin film of 'Contralube' or some
I'm posting some detail of this long saga of faults on my K3 and the eventual
solution, in the hope that it may help others with similar problems.
My K3/100 S/No 01434 is just about 3 years old now and about a year ago
intermittently started showing faults. At switch-on 'ERR BP1', 'ERR LPF' and
As the person, or one of them, who asked for the Voice Tx Fast Monitor facility
which has been included in V.4.22, can I say 'thanks' to Wayne Lyle for this
new feature? It allows sidetone monitoring of transmitted audio without the
somewhat disconcerting delay, albeit without hearing any
Gerry,
This morning was an example of the great advantage of the K3's phase-locked
diversity receiver. During my contact with ZL3IX, Greg was peaking 569 and
dropping to 449 in rapid QSB on both my vertical and my west beverage, but not
in the same phase. When he was down on one antenna, he
Chuck,
I don't think you're right - the K3 'Key Out' is spec'd 200V @ 5A. The FL2100
'RY' relay control switches 12V @ 200mA only.
73
Tom G3OLB
AE4CW wrote:
However, you will need an interface to key the amp from the K3 as the amp
keying voltage is not compatible with the K3. I used a simple
I stand corrected - hadn't realised the 'Z' was different.
73 Tom G3OLB
- Original Message -
From: Tom W8JI w...@w8ji.com
The FL2100 and 2100B are negative low voltage.
The FL2100Z is positive low voltage with a huge current spike.
There's an even simpler fix for an aching finger due to a stiff PTT button on
the MH2 mic - push the XMIT button and push it again when you finish talking.
73
Tom G3OLB
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Thanks Art, that was the problem. I had tried to set up memory hopping between
bands, which unlike my TS850, the K3 won't do.
WB8ENE wrote:
Sounds like you have a * in the first position of the name for that memory
location.
Knut AB2TC - you have to push the MV button a second time if VFO A
Can anyone throw any light on the following way in which my K3 has always
behaved?
Using memories 00 - 09 as if they were band switches: Config: Mem 0-9 : Band Sel
Memories 00 - 09 are each set up on a frequency in each band using the VM
button.
Tap MV button, then select a memory either by
No serial cable connected Mike.
Hi Tom:
I troubleshoot peculiar K3 occurrences in this order.
1. Operator error
2. Computer error
3. K3 error
It sounds like item 1 is ok. Move to item 2. Turn off any logging program or
better yet disconnect the serial cable.
73,
Mike K2MK
Re-the current thread on using the KDVR for checking transmitted audio:
When using SSB I like to monitor my audio sidetone in my phones, probably
because, like most hams, I like the sound of my own voice! I recognise that
this may not be a true reproduction of the outgoing signal, but it does
Someone here made some recommendations for noise-cancelling headphones. For
several years, on long-haul flights, I've been using the Fujikon Pro-Luxe NC-4
which are excellent and much lower cost than others - I paid around GBP 22
(about $35). I bought mine from Radioworld here in UK. Can't
Thanks to all those who have posted interesting responses on my MON delay
question. Just to make it clear, this was not a complaint, just a minor
irritation as I use CW 99% of the time anyway and for CW the K3 is the best! I
look forward to Lyle's possible 'pre' or 'post' processing selection
Lyle,
Thanks for the explanation. As with most hams, I like the sound of my own voice
(!) and listening to a delayed version of my own voice on phones during a long
contest, I find quite wearing. Would it be possible to menu-select the monitor
output prior to any of the processing you mention?
Does anyone else find the processing delay in the sidetone monitor most
disconcerting when using SSB?
73
Tom G3OLB
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Shipping of the Yamaha CM500 headset may be free in US but they want $50 to
ship to UK. Anyone know if there is a UK stockist?
Tom G3OLB
On Wednesday 09 December 2009 02:37:34 pm Merv Schweigert wrote:
As someone posted before, they are here for 38.00 free shipping,
they are not a stocked
N6 KR said: In a recent discussion about SPLIT, many proposals were made (too
many :) Others argued for no change.
With this in mind, we've created a new switch macro feature
Blimey Wayne, is there no limit to what this box will do?
73
Tom G3OLB
I'm sure that Wayne/Lyle are not looking for additions to the wish-list at
this late stage, however.my dear old TS850 has the ability to scan or
frequency-hop across a number of channels on all bands. I find this a very
useful feature when I am in my shack working on something else as I can
I would, once again, like to applaud Gary Surrency at Elecraft K3 Support for
his patience and speed of response in helping me install a firmware fix
yesterday. The level of technical support provided by Elecraft is superb.
73
Tom G3OLB
How did you get the solder blobs out of the living room carpet Ron?
73
Tom G3OLB
Ron AC7AC wrote:
Not wanting to hide out in a corner, I used a 2x3' drafting board, put it on
my lap in the living room with the soldering station on a TV tray, and built
my K2 while chatting with the XYL,
If you don't like magnetic screw drivers, use a small piece of 'Blue Tack' on
the tip of the driver to hold your screw. I always keep some of this in my tool
box.
73
Tom G3OLB
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Greg
It's a faulty encoder - I had two of them go bad with these same symptoms. Talk
to the guys at supp...@elecraft.com and they will replace it.
73
Tom G3OLB
I have a K3 SN 1553
When I first power up the K3 the VFO B works correctly.
After about 1 minute it starts to get eratic and then
Isn't there a protection relay on auxiliary antenna input to protect against
excessive RF getting back in?
73
Tom G3OLB
Steve,
No relay for either keying or T/R switching - it is all electronic.
73,
Don W3FPR
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I think this subject has been covered before - so apologies for missing the
reply:
The UK allocated 60 metre channels extend down to 5.2585 MHz but my K3 will not
transmit below 5.330 MHz and VFO B displays 'END'. Is there a fix?
Tom G3OLB___
Rick
Make sure you remove the screw from the 2D fastner at the lower right hand side
of the panel - see Assembly Manual page 37, Fig 51. Having done it many times,
I'm now an expert at removing/replacing the front panel and it only take a few
minutes!
73
Tom G3OLB
Rick, N6CY, asked:
...has
Jerry
I have had 2 failed encoders and am waiting for the second replacement. In my
case, it was not due to any shorts occurring although I believe Elecraft are
now advising the fitting of an adhesive rubber insulating pad behind VFO B
encoder. Looks like they had a bad batch from the
But DO remember to remove the screw(s) from the 2D connector on lower LHS.
Tom G3OLB
It would be interesting to me to see somebody prying off the front panel
assembly in video form.
It's an easy job Brian. Just use a thin screwdriver placed as indicated in
the instructions. Go back and
Another warning!
A few years ago I used a catapult and a drilled golf ball with some braided
nylon line over an oak tree. When it became stuck in a branch, I wound the line
round a piece of wood and gave it my full weight to release it. The end result?
I literally shot myself in the foot,
Thanks all for a good laugh this Sunday morning on the subject of
frequency/wavelength units!
73
Tom G3OLB (patiently waiting)
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