I have a fairly elderly K3, SN500s. I have noticed recently that occasionally
when I hit the band up switch the mode changes but the band doesn't. Seems
to be getting more frequent. Is this a common problem and is there a fix?
Mike
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Sorry this is an old thread. Is there any particular reason why the frequency
error offset is limited to +-9.99kHz? My 10GHz transverter has attained LO
stability at 25kHz off its nominal figure and I can't correct for this.
10kHz sounds like at lot on 2m or even 23cms but on 10 GHz its barely
Hi All
Is there any prospect of the KRC2 being updated to fully support the K3?
Ideally a new device with outputs covering all the HF bands, including the
new ones and the 6 transverter bands? I need this for a remote setup.
My old KRC2 has finally failed and no longer responds, but it never
A 4m module would be a very good reason for me to buy a KX3 - but it would be
even better if it was available for the K3.
Mike
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I tend to agree Eric. I have not commented yet. We need to understand what
happened with the original message in this thread and more importantly how
to prevent it. Power cuts happen, for whatever reason and we can't have them
bricking the radio, whatever it happens to be doing at the time. I am
First question is why as the XV144 its much larger than the radio - do you
mean the internal module?
I have two, one to go with my K2 and K3 for 2m and the other for my 23/13cms
IF.
I am looking for an XV432. If I find one I will no longer need my spare
XV144 which currently drives my microwave
Nice location - handy for Elecraft too.
there is a tree in the background that looks tempting as an antenna support.
At the moment it looks like you have one of those QTHs with almost no
man-made noise which coupled with an inefficient 80m antenna is frustrating
when people you can hear perfectly
Hello Hank
I sympathize with these difficult issues - the KRC2 is out of date and its
about time it was replaced but at least it has always been reliable. I have
one and it has never suffered from RF getting into it. Sorry if the below is
stating what is already obvious to you.
This may be a
That's Spectre (SPecial Executive for Counter-intelligence, Terrorism,
Revenge and Extortion) for you - no tolerance of incompetence.
Anyone know what The Lad Himself is screwing an 19DS/87B into in The Radio
Ham? There is a nice collection of amateur radio equipment in that episode.
IMO, with
Hi Don,
I guess I didn't explain well enough.
What I meant is the K3 has lots of ways to go to TX/ many of which I want to
use/
So yes, I do want to go to TX via the voice keyer, or via the internet, or
via the key, memory keyer, tune button or even the microphone ptt switch. I
just don't want
Thanks everyone for the most useful suggestions. I have now determined that
the semi break in delay only works when VOX is activated, so if you are
using PTT, which I was, and you press the memory button, there is no delay
and the PTT output rattles up and down. With VOX activated the hang time is
I also have a surplus 4 band K1, basic, no ATU. It is in the UK where I live.
I would like a second K3 so if anyone is interested, contact me off list
with an offer.
Mike
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Hi Joe,
That's an easy one - I did think about that but rejected the idea as the K3
can go into transmit without a PTT input, in several ways, including the
extremely useful voice keyer but also by PC command, pressing the tune
button, VOX etc.
Mike
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Please can we have an option to disable break in. I nearly killed my
microwave transverter tonight because of break in when I pressed the memory
key button by mistake. CW QSK is too fast for and defeats the sequencing of
the transverter.
Mike
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I wasn't aware of that feature - but all I can get is FULL or SEMI, no Off.
Turning off VOX to PTT still causes VOX to operate with the key - which is
surely a bug?
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Hi Don,
That doesn't work too well because the PTT signal still bounces up and down
setting off all the relays. My IC735 used to have a VOX delay which you
could set to something long to prevent that - but unless I missed a menu I
can't seem to find where you set the CW VOX hang time.
Mike
--
Are you saying that with VOX off, and no external source of PTT, your
K3 is going into transmit when you operate your key? i.e. you see the
red TX LED light?
Yes to the first, no to the second.
To explain - in CW mode the K3 sends a PTT signal on the keying line
whenever the key is down. It
How about a serious VHF/UHF radio ?
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__
Elecraft
Or if you don't want to or can't easily alter the antenna, lengthen it
electrically by adding a small inductance (10nH) in series at the feedpoint.
Say 12 turns on 3 diameter former (plastic bottle, whatever). If you
lengthen the wire to 86ft you will have a 5/8th wavelength that you should
be
Yes - back in the early days of the K3 it did the opposite, it would transmit
more power than requested which was a nightmare for those of us using linear
amplifiers. Some new ALC software was developed which had this effect, but
it was not as marked as you are experiencing. There might be a
of
the components will have been designed in Europe or Japan but manufactured
in China or elsewhere. These days there is probably no such thing as an
entirely American radio, or a Japanese one, or a British one.
Mike G0MJW/AD6XY
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you a conservative 1500W at the feed. It
makes more sense for one or two people to get together and take all in one
go.
Always a pity to see nice RF hardware scrapped.
Mike G0MJW/AD6XY
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Several people have used LiPos in the K2 - I looked into it but I decided it
was too risky. There is a risk of fire/explosion but with suitable
protection the really big risk letting the battery go flat and ruining it. I
have a LiPO pack to power the K2, but it remains external and has a low
Bearing in mind the cost of a K3, it might be a good idea to buy a cheap
modern second hand Icom / Kenwood / Yaesu first and see how you get on with
them. Meanwhile saving up for a K3. Then if the cheap rig does not suit and
you decide to get the K3 you will truly appreciate the improvement.
Its oscillating. Stop using it as you are transmitting outside the band -
hence the high VSWR
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Looks very nice - Does it work with the K3/10?
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The largest contributor to DX success has and always will be your ability to
be there and efficiently radiate a signal in the right direction and to
receive signals well. I have always found QRP based on TX power to be
anachronistic. It is the EIRP that matters. Neglecting efficiency for the
It should work just fine. I have up to 3 transverters and KRC2 attached. I
did notice some strange effects if I daisy chained several XVs where one was
unpowered. So look out for that sort of thing if you have trouble.
If you have trouble with wiring to the 15pin connector on the back of the K3
Hi Wayne,
I expect you are back by now. However it might still be of interest. I have
been using laptop type supplies for this application. Light, small, cheap
and some of them are relatively quiet. They will also fit in a small metal
box. Recently I came across LED lighting supplies, 12V again
I picked mine up at Dayton. I am looking forward to testing it.
Mike
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That is rather unfair Brendon. Most of the time, in fact all of the time when
I called in, someone called over the top of me. I can't know in advance when
someone who can't hear me is going to transmit. When you got two or 3
characters, that was when I stopped because with QSK I can tell in
Can't hear me on properly SSB obviously though you are 59 down here but noise
is low. So, I call in in CW and you say This is an SSB only Net - go away!
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The K3 displays the frequency for bands above 1 GHz by missing the most
significant digit. I would rather it missed the least significant one. Then
1296 would read 1296 rather than 296. This is I feel justified on the
grounds that, for non-GPS locked systems, by the time one is over 1GHz the
last
Are you sure about this? Mine does work - it would be impossible to operate
VHF without it. The PTT I use is on the front panel wired to a footswitch
and it does work in CW mode.
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Great news, I have been waiting for this option ever since my K3 arrived.
The method implies the phase noise of the 10MHz reference is not so
important - which is useful to know.
My high spec reference is 5MHz and my cheap one 10MHz. The 10MHz will have
worse phase noise than the TCXO in the
Luckily - most of the world is not the US and gains of over 15dB are legal
and common in non-us amplifiers. Modern FETs have much more gain than older
devices and it would be quite normal to have 20dB gain from a stage - even
after some feedback. There is an interesting design in the latest Dubus
The Northern UK Elecraft Net Dave
I could not break in the time. You were 59 on a quiet band but the others
were almost inaudible. Is it time to choose a different band/frequency/time
perhaps?
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I am not sure - but clearly it is not easy to cover the country in one go.
Perhaps we could have North and South Nets or maybe in the evening?
Mike
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Thanks for this. I must get a battery pack kit for my K1. It seems a pity to
have to use a PSU or external battery with it.
My K2 had the lead acid cell in it but I found that it was rather heavy.
When I bought one of Roses' excellent cases for my K2 for a holiday to the
US, I replaced the
Go for the RCAs so you can still remove the top easily. At 28MHz (practically
DC - it is 10m wavelength for goodness-sake) you don't need to worry about
the mismatch for this application.
That is what I did - it looks neat and stops you from confusing them with
the KAT2 BNCs.
Mike
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Propagation was not really up to it this time - have we considered 40m? Maybe
even call it the EU elecraft net.
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I only just found it!
Now it is out, what is different between the KPA500 and the Tokyo High
Power range of amplifiers? Auto tuner? That would be great. The KPA500 is
just right for our 400W power limit incidentally - well done there.
Mike
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Probably not because of the codec licensing issues and also because the DRM
standard was not the US system, there is also - IBOC which is more common in
the USA. There are two rival systems out there and that is never much good
for adoption.
The K3 is not intended to be a broadcast receiver. It
You could sell it to me
But there are advantages in an external transverter. In my case I am
thinking of putting it and my 70 MHz (XV70) transverter a long way away from
the radio, to overcome long coax losses. Cable loss at 28MHz is not a
problem for my 30m run as there is more than enough
The fcc requires amplifier gain to be 15 decibels maximum for any amatuer
radio amplifier.
What a stupid regulation! On the one hand you are allowed 1500W and on the
other only 15dB gain? It makes no sense. Presumably one of the CB
regulations.
A gain of 15 dB is reasonable for a single stage
Yes - great fun. A very interesting event.
Owing to unfavourable exchange rates I will not be there this year - so it
is safe to attend.
Mike
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And note these can be converted for the 70MHz band which greatly increases
their value in Europe.
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Assembly language! We had to write code in Hex.
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What I would find most useful is a code in a PIC that decodes K2 auxbus
commands to set an output pin according to the selected band. A bit like a
KRC2 but embedded. Then I could build my own
transverters/amplifiers/switches. I realise auxbus is proprietary so the PIC
would have to come ready
Hi Lyle,
A question set on the new transverter interface KXV3A and the K144.
How many internal ports does the KXV3 have? If it is only one is the KV144
daisy chainable like the XV144. If yes when is the KV70/220/432/1296 coming
out!
There was discussion on low level outputs for driving gear
If you have the ATU you did remember to re-connect the antenna didn't you? No
mis-aligned connectors?
Have you reset the CPU? If so it may require re-claibrating. Check the
memory battery, re-do the synth cal. It is probably worth going back to the
build manual and tracing the fault through the
I would quite like one too - no PA required as I want to use it purely to
drive my 3.4GHz, 5.7GHz and 10GHz transverters via the K2. The 2.3GHz and
24GHz transverters use a 144MHz IF and I have an XV144 for this.
Mike
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Just because a while ago it was OK to use pink it does not mean it is now.
Many years ago everyone drove on the left of the road. This is still fine
and accepted in most of the world, but not good fashion in the America or
continental Europe. Go around with a pink bag if you are male and people
If it is going via parcel force, after customs it has to go to their
warehouse. There it will sit for up to a week. Then they will send you a
letter with the charges due. Once you have paid these, including another £8
or £13 plus VAT they will send it on to you within a week or so. The penalty
of
If you need it to match ask yourself how hard is it to drill 3 holes in a
panel?
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I can not see any reference to noise figure in the brochure. Just MDS and FM
sensitivity with no bandwidth.
When I get mine I will measure the noise figure on a test set. It is likely
to be under 2dB and I will use a low ENR head!
I suspect like the XV144, the K144XV will need some gain
I know this - so does everyone. I have actually read the manual. However,
there is only one TX inhibit and it is shared with the K3 on signal, which I
happen to be using. Even if I was not using it the inhibit might easily be
set to the default K3 ON and be ignored. Perhaps one of the DIGOUT
I am intrigued.
Why does the K144XV need any firmware apart from on/off like the XV-144? Can
it do other things? I have been meaning to ask for a while, how will it
control my 2m PA which is not the same as the HF PA, and will it allow a
delay for the relays and pre-amp like the XV144 does? Is
Yes - we are lucky in speaking a similar language to the US. I have imported
directly from Japan, but it is more difficult to pay.
Currently the exchange rate is very poor, back in 2008 when I ordered my K3
there were over $2 to the pound. At Dayton that year there were a lot of
Brits buying
Bird Trulines were designed a long time ago. Yes they are good but not that
good. Certainly not a calibration standard. With a pure signal they give
good results within their specification.
With this type of meter it is very important to make sure there are no
harmonics in the signal as the
OK - Why the new frequency?
Mike
Ian Maude wrote:
Hi all,
The first UK Elecraft net of 2010 will be run tomorrow (Sunday) at 09:00
on
3768 +/- QRM. I would love to hear you there, especially if you have not
called in before or if you are thinking about buying an Elecraft radio or
I see you have decided on the K1, that is a good choice. The Elecraft kits
are a good choice as the manuals are so well written.
You say you have no experience of building a kit, so before you build it,
while awaiting delivery perhaps, I think you should practice on something
that does not
Happy New Year Everyone!
I am looking at my K3 in the sunshine and I have noticed some fingerprints
on the front panel. Some or the ore often used buttons have dirt on them
too. I wonder what people are using to clean the front panel? Soapy water
will do I expect - anything better? I don't wish
No but it certainly helps. You could use the main antenna socket but it is
better to use the transverter ports on the KIO3.
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Julian, G4ILO wrote:
Following the recent bomb attempt it has been reported on the BBC today
that only one item of hand luggage is now being permitted on flights to
the USA.
I think we can forget flying to the USA for the time being. I am wondering
about going by boat for a nice
There is a lot here about the K3 firmware tweaks - so I will address the
other sides of Wayne's question.
Application software - I have a KRC2 and I would like it to know the
difference between 6m and 10m. In fact it would be nice to get away from the
fixed bands per relay and instead map
Very interesting. Hopefully details on how to drive microwave gear to follow
too.
I am wondering what to do with the unneeded second crystal. There is no
need at all for 146-148 over here.
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Not quite - but I can comment on the XV144. The stability is OK with the
crystal oven though not exceptional. It need to be left on all the time or
it will take a while to settle on power up. There is a jumper for that.
The XV432 is likely to be approximately 3x less stable than the XV144.
Mike
That is brilliant - but can I re-make a plea I made at Dayton for a bit more
power hndling at VHF. All I need is 400W, the UK limit, SSB not FM, and I
don't really mind if I have to do a few modifications.
Mike
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It is really up to you but a 100W VHF amplifier should not need more than 10W
of drive, typically much less. A 300W will amplifier perhaps need more
drive. Of course the output will be cleaner if under run, so a 25W amplifier
running 10W ought to be cleaner than when running 25W.
You only really
What is all this Droid stuff?
I am afraid the latest shipping date estimate of 16th December is just too
late for all of us in the UK. The tax applies when it arrives, not when it
was sent. So that is only 2.5% but the Dollar is going up again as well. I
am wondering about cancelling. I have
Indeed very generous - thank you Eric.
We will find out on Wednesday our fate for the next year in the budget
statement. It is likely to be tough.
Mike
Dear Eric,
Many thanks for a most generous gesture. This will be much appreciated by me
and your other UK customers for the K144XV.
73
I have just requested a new certificate. I had an error message that mine had
expired when I tried to import into the new Windows 7 system. The error
message was variable though so it might not be that.
Mike
AB3EN wrote:
Has anyone been able to install a TQSL certificate under Windows 7? I
All this is very interesting. It certainly demonstrates the need for the
continual product testing Elecraft undertake. Sending spares to remote
regions with poor postal services, e.g. the UK is an expensive and slow
business.
The problem with the wrench - or hex key is a real one. It also
Ian White GM3SEK wrote:
What the KREF3-EXT module should be able to deliver is complete freedom
from frequency drift, for almost all practical purposes. There could
also be great communication value in being able to lock a pair of K3s to
the same global GPS standard, even when they are
Sounds like a bug. The obvious fix its to fix your transverter so it has an
offset that is a multiple of 1kHz. If it is an XV144, hard luck for a while
until it gets sorted out.
Mike
Graham Kimbell (G3TCT) wrote:
I've just upgraded from firmware 3.27 to 3.63.
I used the VFO CRS menu
When I did it about a year ago I used HRD plus a toggle on the appropriate
interface line on the DB15 plug to power on and off the K3. I used a relay
controlled by USB.
There are plenty of interfaces available, all you need to do is write some
simple code in C++. Many of the EBay interfaces
I produced a little utility to control the K8055 card if anyone is
interested. The card comes with a simple control program anyway but I wanted
to label the buttons and allow configurations to be memorised.
Mike
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Strangeness with the DVR.
If I press M1-4 to initiate a memory call all is OK. If I then hold M1-4
while the message is sending to enable repeat mode, on the first cycle the
PTT does not drop at the end of teh call for a couple of seconds, then all
continues as normal. If I simple initiate with
This is a big issue for us. If delivery slips to 2010, which looks likely, I
will have to pay more tax.
Mike
Eric Swartz - WA6HHQ, Elecraft wrote:
Hi David,
- We're not quite shipping the K144XV yet. We have encountered several
other new parts delays that were unexpected. A fallout
Thanks Ian
I was busy last week but hope to attend today.
Mike
Ian Maude wrote:
Hi all,
Just a reminder that the net will be run as usual on 3658 +/- QRM at 09:00
tomorrow. I hope to see you there. We had a good discussion on several
topics last week and it would be good to get your
Eric Swartz - WA6HHQ, Elecraft wrote:
Hi Dick,
Not at this time. We are only producing the one with the holes ;-) .
73, Eric WA6HHQ
But Elecraft are selling the corner pieces and the paint so it ought to be
possible for someone to make their own case.
Perhaps Elecraft could make
Thanks for the report Ken, I am afraid I don't see a need for one of Rose's
covers for it. I am waiting for an uncommitted sensor so I can measure high
power at VHF and above.
Regarding powering:
My K3 12V output powers an automotive relay (+diode) which connects the 12V
PSU to an 8 way
I agree - we will just have to wait - or modify the 200W sensors in some way
- I think the limitation is the coupler termination, getting up to 400W (UK
limit) might be possible.
Perhaps in the interim, when it arrives, I will put the meter on the radio
side - after all an amplifier has fixed
Since Moe updated the software it is now officially brilliant. You can't do
better for the price and their support is as good as Elecraft.
Mike
K3PIN wrote:
Can anyone tell me their experience using the K3 with the RF space SDR-IQ?
I emailed the company for info and so far I am not
This is why I eventually decided to use AA NiMH cells instead when replacing
the lead acid battery in my K2.
I use 10 AAs in a pack, this gives me 2.5AH vs ~3AH for a small LiPo pack of
similar mass. The LiPOs are fine but I will keep them outside the case so I
can throw them somewhere if a
This is not strictly true. If you can lose the 10W in an attenuator you can
use the K3 just like any other radio to drive the transverter. But I agree
the best thing to use is a KXV3A. This gives you the connections you need.
One thing you will not have is the control provided by the Elecraft
Sorry - I have been roped in to JOTA this weekend.
Mike
Ian Maude wrote:
Just a reminder about tomorrow morning. I hope to see you there :)
73 Ian
-- Forwarded message --
From: Ian Maude i...@gb7mbc.net
Date: 2009/10/11
Subject: UK Elecraft Net
To: Elecraft List
That would be great thanks. We are still using imperial fractional rather
than decimal channel spacing over here in Europe.
Incidentally, you mentioned earlier I could easily so I take it you
are not writing all this code in assember. What arwe you using? C?
Mike
wayne burdick wrote:
I thought about this and even bought a 3 cell battery and balanced charger -
then I realised the dangers of LiPo and decided against it in favour of 10
2.5AH NiMH cells in a 5 over 5 holder. This fits in fine in place of the
lead acid, is a lot lighter and can be charged quite easily with minor
It is a known issue with Spectravue. The only down side to the software at
the moment.
Mike
Maarten-2 wrote:
I am setting up a K3 with a SDR-IQ and spectravue.
When selecting K3 in extRadiosetup menu I cannot keep the IF inverted.
Is this a software problem with spectravue?
Anyone
This is the one aspect of the K3 I find frustrating. To QSY a few hundered
kHz takes a lot of turning. I really like the way some radios speed up the
tuning rate as you turn the dial faster. I use the RIT tuning very often to
QSY quickly and for larger steps I end up having to use DFE which is
I missed it too Bill
NZ0T wrote:
I don't see it yet on the download page and I thought I read that it would
be available by early this week.
73, Bill nz0t
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Sent from the [K3]
I remember having this problem with an old Advantest Drift-o-matic spectrum
analyser at Uni. The buttons stopped working because the plastic let out
some oils and this coated the gold and stopped the contacts working. I am
not saying this is what has happened to Elecraft, I am sure that problem
Those of us over 40 might remember cheap Japanese products being where China
are now - except China are way ahead of most of the rest of the world
already.
If you want good quality electronics, it probably will come from China. The
K1 does not come from China, but I expect many of the
You probably made the best choice for you. If the chip is cheap - which it is
just cut the pins and remove individually.
It is fairly easy to remove such a chip using hot air or thick tinned copper
wire. You need to be careful with hot air but if you mask off the rest of
the board with a piece
Just release it - you know it works already! We have confidence in you. Beta
is beta.
wayne burdick wrote:
The next K3 beta firmware release will include dramatically better
bass response in receive mode (50-200 Hz). The result is fuller,
richer audio, which many of you have asked for.
I was wondering this myself. The T1 would go well with the K1. The whole
package is bigger - but not by a lot!
The T1 appears to have 3 more Ls and 3 more Cs so can probably match a wider
range of bits of wire. I think I would go for that unless there was a very
good reason not to.
With a more
Where is MA0? Special call? If so no wonder - try being a plain old G or M
and you will find the bands much worse.
Bob Towers-2 wrote:
Hm. a perspective from the other side of the Pond.
On the contrary, I found conditions pretty reasonable on 20m at the
weekend. I had a go at the
I know this is not possible right now. But, is there any way one can use the
DSP on SSB to allow adjacent stations to be actively rejected and thereby
arranged to not pump the AGC? For unknown reasons in contests the weak DX
stations always like to call within a few kHz of the strongest station
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