LOL. I bet you don't even know if the board is multilayer or not. I
don't, and I'm not about to pull it out of the rig just to find out.
I had a KIO3 board go bad in the past and was lucky enough to be able to
replace it then. Pretty certain I'm screwed if it happens again.
Dave AB7E
Its done Every Day.
Look at Russia and China !
Yes, it takes a very Special Skill set..
Ray WA6VAB K3
From: David Gilbert
Sent: Friday, November 26, 2021 3:37 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] Need K3 Board
Would you try to replicate that board from that schematic
In reading this, it brings a point of history to mind. If the equipment
was damaged by a thunderstorm or lightning, my personal experience, is
that one's homeowner's insurance should pay replacement cost, less the
deductible. I'm no insurance specialist and I'm sure policies are
different
Victor makes a good point here. One thing to examine and one point
often overlooked and largely not understood by hams and manufactures has
to do with baluns and common mode chokes. All are not created equal,
regardless of what the glossy advertising may say. Baluns in tuners
are largely
My experience with the K3 may have some application here. When
using the K3 to decode CW/RTTY, the decoded text can be
displayed on the K3, on the P3, or have it sent to a computer.
If you try to display it on the P3 and send it to the computer,
both locations drop characters. If you want the
Good observation, which I should have known. Only the KX3 decodes. The
KX3 Utility displays only part of what is on the KX3 text display and
must be losing something along the way. The PX3 seems to display what
is on the KX3 text display, but often adds a lot of characters. Has
anybody had
The KX3 Utility doesn't *decode* digital signals, it just reads out the
characters the KX3 has decoded, just like the PX3 does. I don't think you
can have both the PX3 and a PC app showing decoded text at the same time;
the manual says it's unsupported, and from the programmer's reference it
seems
The receive screen on my KX3 Utility/Terminal shows fewer characters
than on the text screen on my PX3, also different from the text screen
on the KX3.
I can decode CW better in my head than the KX3, PX3, or KX3Utility!
Does the KX3 Utility terminal decode digital signals at all? I've never
>
> Reverse engineer it? The schematics are readily available for it.
>
> I think fixing damaged nonworking boards os much easier. So those who have
> older nonfunctioning boards might think about selling them to those of us
> that can fix them, thus having stock for the rest.
>
>
>
Because it’s old is no guarantee it’s gone. I have numerous through hole
semiconductors dating back to early ‘90s designs that are still available.
Making the blanket statement that it can’t be produced because components must
have EOL is meaningless. If that parts had significant usage, they
Would you try to replicate that board from that schematic without having
access to the artwork for the board?? No frigging way. It has to fit
into a fairly small space.
Dave AB7E
On 11/26/2021 3:53 PM, Ray wrote:
The schematic is Published, Check the Elecraft K3 site.
Ray WA6VAB K3
Both of those reasons are bogus in my opinion.
For the first, a digital interface board is way down the list of what
would be actual intellectual property. There is no software or special
circuitry such as an LPGA or similar) involved at all.
For the second, I sincerely doubt that Elecraft
Pardon, that's for the KIO2. The KIO3B is part of
https://ftp.elecraft.com/K3S/Manuals%20Downloads/E740323%20K3s%20Schematic%20Files.pdf
On Fri, Nov 26, 2021 at 5:56 PM Julia Tuttle wrote:
> So it is! Page 24 of
> https://ftp.elecraft.com/K2/Manuals%20Downloads/KIO2%20man%20rev%20C%20.pdf
>
>
So it is! Page 24 of
https://ftp.elecraft.com/K2/Manuals%20Downloads/KIO2%20man%20rev%20C%20.pdf
Thanks, Ray!
73,
Julie
On Fri, Nov 26, 2021 at 5:53 PM Ray wrote:
> The schematic is Published, Check the Elecraft K3 site.
>
> Ray WA6VAB K3
>
>
>
>
>
> *From: *Julia Tuttle
> *Sent: *Friday,
The schematic is Published, Check the Elecraft K3 site.
Ray WA6VAB K3
From: Julia Tuttle
Sent: Friday, November 26, 2021 2:27 PM
To: Fred Jensen
Cc: Elecraft
Subject: Re: [Elecraft] Need K3 Board
I can see that for the radios themselves, but something like an IO board
seems less likely to have
Thanks for the comments and ideas for a K2 battery charger. This would simply
be to charge the battery when away from home, so I don’t really care about RF
noise.
Doug, W0UHU.
> Subject: Re: [Elecraft] [K2] Cheap power supply for KBT2
>
> Hi Jim,
>
> Excellent article. I haven't checked if
...also, I don't think there *would* be anything wrong with sharing the
factual details of a dispute if you've made a good faith effort to resolve
it privately and gotten nowhere?
"Don't say anything disparaging about anyone else in the group" can end up
papering over a *ton* of (technical or
I can see that for the radios themselves, but something like an IO board
seems less likely to have competitively clever design tricks in it.
I can also see keeping the designs of even simple expansion boards secret
while the radio is actively being sold, since cheaper clones would threaten
the
It might have been derogatory if I had named the other guy as you asked me to
do; the information I shared is absolutely true. What's your problem?
Richard
> On Nov 26, 2021, at 4:52 PM, Bob McGraw wrote:
>
> Richard:
>
> May I suggest you refrain from posting derogatory or incorrect
Yes indeed. I wonder what the availability and useful life of the 6L6
or 807 types were? They were ubiquitous in 1953 when I began, and they
continued well into the 70's before power semiconductors came on the
scene. Excluding the NE555 which seems to have an infinite lifetime, if
a
Oh, I get that, I just don't understand why the radio doesn't more clearly
indicate what's happening, with something like flashing full bars or an
error code ("HI MIC"?). As it stands, an operator can't tell "input is too
low to trigger ALC at all" from "input is so high the radio is ignoring it
On 11/26/2021 1:49 PM, Fred Jensen wrote:
Elecraft has a very significant investment in those data [often called
Intellectual Property]. Can't really see them just giving it away.
Likewise computer codes. I'm not at all surprised that they're holding
their IP close to the chest.
More to
Julia,
That is designed in to prevent the audio front end from being damaged by
a high audio level.
For those who have read my document on setting the audio levels, I was
careful to state that one should start with each audio level (computer
and KX3) to mid-range for a starting point and
Thank you very much Don !
This is exactly the type of FB information I was looking for.
I rec'd a few emails telling me to calibrate it, however the VFO reads right
smack dab on perfect, so I didn't
wish to mess with it by redoing something that may not help.
I'll probably just leave it (at
Mike,
The K1 must tune a bit below the low end of each band. That is to
compensate for the crystals on the band board not being precision
crystals - so your K1 is behaving as normal.
You CAN tweak it by a small amount on ONE band (the 2nd band will change
too).
In your case, I would
Hmmm ... Elecraft has a very significant investment in those data [often
called Intellectual Property]. Can't really see them just giving it
away. Likewise computer codes. I'm not at all surprised that they're
holding their IP close to the chest.
73,
Fred ["Skip"] K6DGW
Sparks NV DM09dn
I think what you are seeing is probably typical. I have a K1-4 that tunes down
to 6988 and 13982 on 40 and 20 respectively. My tuning range is a little wider
at 93 kHz.
The Owner’s Manual has a detailed section on VFO alignment. If you didn’t get a
manual with the radio you can probably
Mine that I built around 20 years ago tunes:
40m 6999.9 - 7088.820m 13994.2 - 14083.4
See page 28 of the manual. The tuning range depends on the value of C2. The
range can be further adjusted by the number and spacing of turns on L1.
It would be a good idea to go through a complete alignment
Just bought a K1..an oldie but a goodie, I guess.
NB board and 2 bands board (20/40) No tuner.
So, just playing around, getting familiarized with this new-to-me little rig
before transmitting or hooking it up to a real antenna and I notice:
on 20m: it tunes from 13.974MHz - 14.063MHz
Hello,
I have a KPA500, (working fine), however, at one, and only one, fan
speed there is a resonant vibration coming out of the amp. It is one
speed above just starting...
It is also clearly a resonance vibration, not a PS hum. It is also only
present when the fan goes up one speed from
I am trying to use cross band SO2V with my new K4D.
For instance, I have my VFO A set to the 20m band, and the VFO B set to
the 40m band.
A/B (or B/A) does not work any more as the appropriate band filters are
not selected.
(Split not working is somewhat understandable, but A/B not working
I wish that Elecraft would make available the board layout, parts lists,
etc that would allow somebody to replicate these boards. Even if nobody
wanted to produce them commercially, there are a raft of prototype
houses that would build a one-off version at a reasonable price ... at
least
A good friend's K3 was damaged in a thunderstorm several months ago. After
thinking it was repaired he now knows the KIO3B Digital IO Board is flaky.
Elecraft has none. Anyone have a good one for sale?
Thanks and 73,
Gary H. Harmon, Jr. - K5JWK
HAM Radio, HEATHKIT, and ATARI
Hi Vic,
I'm quoting only the lead sentence for context, but ALL of this post is
absolutely right! The only thing I would add is that proper bonding in
the shack and in the home is also critical.
BTW -- you and I have been working each other since about 1957!
73, Jim K9YC (ex-W8FNI)
On
In my experience, the single most important factor in reducing RFI
problems is to prevent RF from flowing back into the station via common
mode current on the feedline. This is easiest to do with balanced
antennas. If they are coax-fed, then you need the appropriate choke at
the feedpoint. And
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