...so besides the LPF, what else is different on the DSP D board?
I don't think I've seen any elaboration anywhere.
I've asked this question before with no answer so far.
I'd like some kind of 'sales talk' so I know what I'm getting.
It's really good - buy it. is not enough.
VE7XF
Hello Ralph,
Yes, good question.
In fact, I really want to know:
1. Will there be any differences in the key RX specifications (i.e. BDR and
MDS, survival among strong big guns) if DSP Rev D is installed?
2. From the bit and piece of information scattered among the emails in this
forum
Hi Johnny
I have seen many subtle improvements in the K3's receiver with the many
successive firmware upgrades. There is no supporting documentary evidence from
Elecraft for these subtle changes or improvements that I have noticed.
I have worn out a coaxial switch comparing and testing
Vic, I think you might have missed my second post where I draw a
similar conclusion:
http://mailman.qth.net/pipermail/elecraft/2009-December/122275.html
73/HNY,
Barry N1EU
On Fri, Jan 1, 2010 at 1:28 AM, Vic K2VCO v...@rakefet.com wrote:
But is this any different from reducing the K3 DSP
This is all very interesting, but I seem to recall a post a few days ago by
Lyle stating that the K3 RX EQ was applied by additional shaping of the IF
response, and there is no programmable filtering at AF in the K3. That is
the reason for the LPF board.
So surely this is one wish that can only
DaveL G3TJP wrote:
Note, working with 0603 size SMT components is not a task to be undertaken
lightly. Considerable skill is needed to remove existing components and
substitute the replacement values.
I have very little experience with SMT components but I recall that I had to
remove a
Arie Kleingeld PA3A-2 wrote:
I wouldn't tailor anything with such cartridges.
The HC4 and 5 are carefully tailored already by Heil. That's one of the
reasons why people by them.
But Heil themselves state: To achieve maximum audio quality it is important
to adjust the DSP settings of
As far as I can see, Lyle's dsp firmware is creating the AF response
dynamically from the IF - it's just a matter of Lyle shoehorning APF code.
I'd guess that one reason LPF was implemented in hardware rather than
firmware is to filter out noise that was generated either at the DAC or
post-DAC.
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
hi,
I can only speak for the K2 which I built. The key point is your soldering
skills. Next point is patience and following the instructions.
If you want to see my building pathway you can find it here:
http://www.qsl.net/oe9fwv/k2.html
from the dates you can see how long it took me to
Hello John,
Thanks for your comments and I understand what you would like to express.
However, I agree with the previous writer, VE7XF, that Elecraft should tell us
the difference of DSP Rev D before Vs after modification. All the information
is just piece meal and scattered among emails and
I believe the firmware release notes reveal everything that has been
improved/changed with each release. I see no need for Elecraft to
document the algorithms.
73,
Don W3FPR
juergen wrote:
Hi Johnny
I have seen many subtle improvements in the K3's receiver with the many
successive
Johnny Siu wrote:
I know it must be good, otherwise, no modification is required.
However, Elecraft should tell me how good it will be, BDR, MDS ???
Johnny I believe I can safely say absolutely ZERO difference in major specs
like BDR, MDS, IMDDR3, etc. These are all determined well
Apparently I don't understand the use of DTR/RTS for PTT.
If I assert DTR, the red xmit LED comes on, but when I send an RTTY
string to the rig, there is no output. DTR is turned on in CONFIG. I'm
in DATA mode and set for AFSK A. What I'm after is a way to avoid VOX
with CW ( Yeah I know for
I'd guess that one reason LPF was implemented in hardware
rather than firmware is to filter out noise that was
generated either at the DAC or post-DAC.
The LPF eliminates leakage of the DAC clock and audio IMD
products of the clock with the recovered audio. Those
products are not within
Pledge Multi Surface is what I use and works very well.
Tony W7GO
AD6XY wrote:
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
Not sure if this is normal or not, but I hear what seems to be a heterodyne
tone on mostly 20 and 15 meters, 14.000, 14.030, 14.091, also 21.022, 21.
053..(just a few freq examples) usually at S-9 levels. Can anyone explain, and
should I be concerned?
Dave K.
Mike,
You are apparently setting PTT with the DTR signal OK,
But, how are you sending a RTTY string? If you are using AFSK A, the
RTTY string must come into the K3 as audio (likely from a soundcard) -
the easiest is to use the K3 LINE IN - plug a stereo cable between the
soundcard line out
Have a look at the mod. Other than trying to make Elecraft justify each
additional nickel, it's really whether you want to upgrade the DSP board or
not.
You do the stuff yourself, you're responsible for what happens, or doesn't.
Especially if you use a non-Elecraft mod. Replace/mod the board by
On Fri, 1 Jan 2010 20:53:14 +0800 (HKT), Johnny Siu
vr2...@yahoo.com.hk wrote:
[snip]
I owned a K3 and still have a K2,
[snip]
I still like to know what benefit I shall get from the DSP Rev D modification.
[snip]
You will not receive any benefit from the revision. You don't have a
K3 to
The slave receiver was an IC746, not a great radio to compare against :-).
HNY
John N1JM
. Fully
30 percent of the EU stations worked were not audible on a slave Icom xcvr
using
the phased EU beverages.
--
View this message in context:
If you disconnect the antenna, is it gone or reduced?
David Kowalewski wrote:
Not sure if this is normal or not, but I hear what seems to be a
heterodyne tone on mostly 20 and 15 meters, 14.000, 14.030, 14.091, also
21.022, 21. 053..(just a few freq examples) usually at S-9 levels. Can
David,
I have found many devices in the shack that cause Birdies
1 - My new Laser printer
2 - The video camera on my EME tower.
3 - computer and computer monitors.
Try turning everything off in your shack and see if that helps.
73 HNY Ken K5DNL
Dave,
I have similar hetrodynes on 15m and they are from my computer. When I
turn the computer off, they disappear.
Tom/k1tl...
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LS wrote:
I decided to go with the K1 ...
Regardless of if you later decide to build a K2, I think you'll like
the K1 enough to keep it too. It's a very nice, very capable, great
performing compact radio. It looks good too.
...with 2 band module...
Now there's where I think you're making a
I have a recent factory assembled serial number #621 LP Pan for sale. The
box and Power SDR (point and click) software works great but I am not using
it as much as I thought I would. LP Pan is $180.00 shipped in the US. If
any one is interested I also have a Personus Firebox for sale that is a
By firmware release notes, do you mean the comments associated with the order
for the K3DSPUPGD, Don? If that's a yes, then this should settle matters
because it says:
Improves low freq RX/TX audio response below 300 Hz, and adds a Low Pass
Filter (LPF) that rolls off RX audio above 4 kHz.
Folks:
Sorry to bother you this early in the year I'm having problems locating
specs for two transistors I'm going to need to replace. Tried Googleing
for them but didn't find much specific info...
BZ AE1 TO-92 I've seen several spec sheet references to is, but they
all
Hi to the new owner of a K3 in Fairbanks, Alaska.
You had a nice signal into VK whilst having a QSO into JA.
Nice to hear another K3 on the air.
Conditions to North America have been improving lately on 20M and it would be
great if more folks on the reflector could be heard Down Under.
73's
I hate to expose my ignorance, but don't use alcohol. I've ordered a new
bezel already.
I was using it to clean the knobs and faceplate and some soaked behind the
bezel and left a white crusty look that will not remove.
Wayne WA9VEE
__
On Christmas Eve morning I bowled in a tournament, and won $45.
Then today I bowled in another tournament and won $55. So now
I'm $100 closer to a P3. I may have it paid for by the time it's released :-)
73, Bob N6WG
The Little Station with Attitude
David,
Yes, that answers it about the DSP board upgrade - there will be a note
there if there is a hardware change that requires updated firmware to
realize the upgraded function. Normally, the firmware is backwards
compatible meaning that the updated firmware will run on K3s without
the
Hello Group,
Thanks to all the emails off-the-list answering my questions about the the
benefit of DSP Rev D modification.
Although none of those emails is officially from Elecraft, I would summarize
the findings as follows:
1. the modifications will have no effect on the key RX performances
It sounds like a P3 may be right up your alley . . . so to speak,
Bruce - W8FU
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob Tellefsen
Sent: Friday, January 01, 2010 6:19 PM
To: Reflector Elecraft
Subject: [Elecraft]
Hi Johnny
You might also want to read about why some aspects of the K3.'s performance
makes it sound harsh. Some interesting information on Marks blog page. Mark is
not the only person that has observed that the K2 sounds sweeter than the K3
on weak signal CW.
Mark also found that there was
I think it will bowl you over...
73, Mike NF4L
Bruce McLaughlin wrote:
It sounds like a P3 may be right up your alley . . . so to speak,
Bruce - W8FU
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bob Tellefsen
Oooof :-)
73, Bob N6WG
- Original Message -
From: Mike n...@nf4l.com
Cc: 'Bob Tellefsen' n...@comcast.net; 'Reflector Elecraft'
elecraft@mailman.qth.net
Sent: Friday, January 01, 2010 4:57 PM
Subject: Re: [Elecraft] P3 getting closer
I think it will bowl you over...
73, Mike
juergen piezo wrote:
Mark also found that there was less ringing on the Ten Tec Orion's narrow
DSP filters.
Note that:
The above (Orion) 200Hz and 100Hz DSP filter settings are 227Hz and 155Hz
in reality.
This is a key reason there is less ringing. If I recall correctly, the DSP
50
Hi.. I'm looking for a T1ATU to buy.
Tnx 73s
Noel Anderson. W1XB
Pse contact me off-list
noel58...@gmail.com
Sent from my iPhone
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Honestly I didn't think I was hearing all that much in the way of
artifacts and I even recorded audio from the K3 and applied filtering to
it and didn't really hear a lot of A/B comparison difference.
However I noticed that the audio is MUCH less fatiguing when listening
to the K3 since I
Wish there was a way to analyze and quantify MUCH less fatiguing.
There are aspects of hearing that are poorly understood. For instance there
is emerging cellphone research that indicates that listening to speech in
one ear is much more attention consuming than listening to the same
conversation
Or if you don't have the paddles and what not then just use the computer
to store a bunch of E's into one of the CW memories. Then just play
that memory...
On Thu, 2009-12-31 at 16:25 -0500, Don Wilhelm wrote:
Hector,
IMHO - Finally a voice of sensibility in this discussion.
I will offer
http://www.zerobeat.net/mediawiki/index.php/K3_BSR-SM_Version_7
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Please strike these from the records and spare us any further misery.
I think it will bowl you over...
Bruce McLaughlin wrote:
It sounds like a P3 may be right up your alley . . . so to speak,
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