Glad you posted this, it's a FB handy household hint to save hearing!
73 de Alex NS6Y
On Apr 6, 2006, at 11:01 PM, Ron D'Eau Claire wrote:
Look at these commercial operators at work for examples of what Jim is
talking about:
http://www.radiomarine.org/historic-5.html
Ron AC7AC
-Original
Look at these commercial operators at work for examples of what Jim is
talking about:
http://www.radiomarine.org/historic-5.html
Ron AC7AC
-Original Message-
Michael,
A lot of us "older hams" developed the habit of wearing our "cans" (as
the headphones were
known) a bit in front of ou
[EMAIL PROTECTED] wrote:
Using the KDSP2 set with a Beta of 95 and a Decay of 30 has helped me
to to copy fast contest CW using MixW 2.16 well enough to
participate.
Interesting. I didn't change the beta from the default of 89, but I
found that reducing the decay to 30 was just about optimal
Michael,
A lot of us "older hams" developed the habit of wearing our "cans" (as
the headphones were
known) a bit in front of our ears when working CW. I still do it. It
protects my ears from
sudden loud sounds. It also cuts down on the ringing in my ears. There
is almost nothing as
hard on
My K2 is equipped with the KDSP2. I enjoy casual contesting, but have only
modest CW copying skills. In order to participate in contests between digital
events, I have tried making search and pounce contacts in CW contests using
MixW decoding as an aid.
Using the KDSP2 set with a Beta of 95
Here are the results of my KX1 with the 80/30 module installed:
With 13.5 Power Supply:
80 Meters. 3.5 watts
40 Meters. 2.8 watts
30 Meters..3.5 watts
20 Meters..2.3 watts
With Internal Batteries <8.2 Volts> Lithium
80 Meters..1.8 watts
40 Meters..1.3 watts
30 Met
On 4/6/06, Lee Buller <[EMAIL PROTECTED]> wrote:
> low cost. the BMF2 is Bio-Mass Filter for the K2. You can have BMF1 for the
> K1.
> It is called your brain. Best filter in the world. Fastest and most complex
> computer
> yet devised.
I agree with your statements, the brain is an incredibl
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And there was much rejoicing (yaaa)
Dunno what exactly the problem was. I pulled L1 and L2 off the LPF
board, retinned the leads, and now it seems to be working. Getting
1.0W out on 80, 2.0 on 40, 2.5 on 30 and 3.0 on 20. I need to retwea
Sir, you are my hero, since you are not just talking about designing
antennas, you are designing 'em.
Let me know your web site or something when this is ready for prime
time, I may well buy one!
73 de Alex NS6Y
On Apr 6, 2006, at 6:27 PM, Edward R. Breneiser wrote:
Hello all!
I'm very ex
Hello all!
I'm very excited about this vertical as hiking season is here.
I'm still in the prove-in stage, but it looks very promising.
I have a vertical antenna system that should weigh-in around
7oz excluding the coax on 40m, 30m and 20m with SWRs
around 1.5 or so. Today I just added some 15m c
Thanks for all the responses. The mic has now sold.
73,
Charlie..>>
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I've been following the neat discussion on filtering with the K2 and find it
quite interesting. I have obtain a new type of filter that did not cost me
anything. Now the KAF2 worked well for me, but I felt the BMF2 worked better.
I have not tried toeh KDSP2 yet (it is rather pricey) so I have
Randy (K7TQ) - Please drop me an e-mail... can't find your e-mail
address in QRZ.COM.
73,
Tom N0SS
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Idiom Press make a SCAF-based audio filter called the SCAF-1. It's a
low-pass filter with a variable upper cutoff frequency. It also operates
in real-time with no ringing. Recordings of the SCAF-1 in action are
available on the web site:
http://www.idiompress.com/scaf-1.html
The standar
G'day folks,
Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the
basic K2's crystal filtering work well enough that you (any of you)
would be happy with no AF filtering or does the AF/DSP filtering add
enough that you wouldn't want to be without it?
Unless there has been a c
I would strain to hear a P5!
Roland n5vwn
- Original Message -
From: "EricJ" <[EMAIL PROTECTED]>
To: "'Dave Lowenstein'" <[EMAIL PROTECTED]>; "'Elecraft Group'"
Sent: Thursday, April 06, 2006 10:24 AM
Subject: RE: [Elecraft] KAF2 or KDSP2 for K2 #5287
Same here, Dave. I operate for f
FWIW,
I operate CW only and have the KAF2 and the KDSP2 installed in my K2. For the
most part I find that I only need the XFIL set to FL2 at 500Hz. However there
are times when the bands are crowded or noisy and I am trying to work a weak
signal. Then I find that the KDSP2 with the Denoiser a
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I spent a few years with just the stock K2 when it came to audio
filtering. Thought it was great just like it was. Last year I put the
DSP filter in. Now I am sold on it. I love the noise removal function
on the thing. I find that if the noise b
Keith - I do CW only and use the KAF2 and think that it is an improvement.
But not to decrease bandwith, the IF filters handle that chore very well. A
bandpass or lowpass AF filter cleans up internal noise that I find tiring.
Another solution maybe headphones that cut off high frequencies. I
cur
Keith KD1E wrote on Thursday, April 06, 2006 5:14 PM
Great reply Vic,
Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the
basic K2's crystal filtering work well enough that you (any of you)
would be happy with no AF filtering or does the AF/DSP filtering add
enough that you w
Hi OM's & YL's!
My favorite mode is CW. And I'm live in big industrial town (QRM).
Now I think that the rigt way for me - it's KAF2.
Hope with this option I will better selected a weak signals from QRM/QRN.
But internal K2 XTAL-filter is great!
Thanks for everyone for interesting discussion.
-
One nice feature of the DSP for CW operation is the ability to open up
the filters for bands that seem to be dead or have little activity.
You set the crystal filter to its widest bandwidth and put the DSP in LP
(its widest setting). Activate the denoiser.
The band is quiet, background noise
Keith,
It depends on whether you want to get rid of those nasty carriers or
bust them.
Some people use these radios on SSB.
73, Kurt
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Keith, KD1E wrote:
When I had narrow filtering in my Omni V I found that S/N did not increase
as bandwidth decreased. Instead, the noise began to sound like signal since
both were at the same frequency. Add some filter ringing to the mix and
sometimes the narrowest settings made copy worse.
As a
Darwin, Keith wrote:
When I had narrow filtering in my Omni V I found that S/N did not
increase as bandwidth decreased. Instead, the noise began to sound like
signal since both were at the same frequency. Add some filter ringing
to the mix and sometimes the narrowest settings made copy worse.
Same here, Dave. I operate for fun. When signals are so bad I have to crank
in $300 filters, it's time to find someone stronger or QRT. I can't imagine
a QSO so important that I have to strain to hear it. I had a KAF2 and had a
chance to sell it to save for a KDSP2. I found I could still do what I
When I had narrow filtering in my Omni V I found that S/N did not
increase as bandwidth decreased. Instead, the noise began to sound like
signal since both were at the same frequency. Add some filter ringing
to the mix and sometimes the narrowest settings made copy worse.
As always, I reserve th
Darwin, Keith wrote:
Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the
basic K2's crystal filtering work well enough that you (any of you)
would be happy with no AF filtering or does the AF/DSP filtering add
enough that you wouldn't want to be without it?
Selectivity has
[EMAIL PROTECTED] wrote:
NowKX1 or K1
73's,
Pete wd4lst
Both works for me
John WA8KNE
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I find the crystal filter more than adequate for my type of CW operation and
have felt no need to add any audio filtering.
73,
Dave
N7AF
- Original Message -
From: "Darwin, Keith" <[EMAIL PROTECTED]>
To: "Elecraft Group"
Sent: Thursday, April 06, 2006 9:14 AM
Subject: RE: [Elecraft]
Hi Paul,
These levels are all fine. You could get more power out on internal
batteries if you used Lithium AAs (1.5 V), but of course that's a lot
more expensive than using rechargeables.
Makes me wonder how long it will be before there's a high-endurance,
reasonably-priced 1.5-V rechargeabl
Great reply Vic,
Let's widen the question to make it KAF2 or KDSP2 or NOTHING? Does the
basic K2's crystal filtering work well enough that you (any of you)
would be happy with no AF filtering or does the AF/DSP filtering add
enough that you wouldn't want to be without it?
- Keith KD1E -
-Or
Alexander Ponomarenko wrote:
I have the question. How much better working KDSP2?
It has very expensive price. Are the KDSP2 really so good
working that I have to pay "half K2 price"?
I have both of them. Keep in mind that I am only a CW operator, so you
will have to get the opinion of an SSB
Thanks Mike,
(as well as Paul and Tom),
I just finished studying the KX1 schematic and AD9834 data sheet. You are right
on. Analog devices also has an interesting DDS primer at
http://www.analog.com/library/analogDialogue/archives/39-08/dds_apps.html
if anyone is interested.
As an aside, I have be
Dennis WB0WAO asked:
I know that the XV-50 ouput is 25w, but is there a way to _modify_ it so
that its max output is around 10w?
-
Sure! The output power is controlled using the POWER control on your K2, or
other 28 MHz if you're not using a K2. If you have a 28 MHz rig without
Jerry, WA2DKG wrote:
I have done 2 of these conversions and noticed something to be careful
of...Underneath L2, in back of J7, leads L2-1 and L2-4 pass over each other
and can short out toroid L2...I used a dental pick to move the wire lead
from L2-1 away from L2-4...This is a hidden area in under
Kenwood MC-43S hand held mic for sale, nice addition for the K2 since
the Heil MH-2 is now obsolete. Set the compression to level 3 and the mic
gain to 2 and you are in business. No more resistors on the mic header to
worry about. I want $45.00 plus 4.75 for Priority Mail shipping.
73,
Randy:
I have done 2 of these conversions and noticed something to be careful
of...Underneath L2, in back of J7, leads L2-1 and L2-4 pass over each other and
can short out toroid L2...I used a dental pick to move the wire lead from L2-1
away from L2-4...This is a hidden area in under L2 and rig
Actually it might be more like saying "The MFJ antenna analyzer cannot be
used in strong RF fields and other analyzers that I have used cannot be used
in strong RF fields so I wouldn't recommend buying an antenna analyzer to
check a Field Day dipole attached to the tower of a 50KW broadcast stat
To me that's like saying "The MFJ antenna analyzer has given me nothing
but trouble therefore I won't buy ANY antenna analyzer".
I won't go into what company I think is gradually buying Ten-Tec as
their founders die off.. Alex.
On Apr 6, 2006, at 3:10 AM, Tom Althoff wrote:
It depends on
It depends on how you operate Alexander.My experience with the Ten-Tec
Orion's DSP as well as external audio DSP's on the K2 convinced me not to
buy the KDSP2 option for the K2.
I mainly operate CW. I tune around at 800Hz bandwidth but typically operate
at 150-200Hz. At such narrow band
I am very serioulsy considering getting a XV-50 for 6m to replace my old
FT-620B rig (lots of good Q's from that one!) and have a question:
I know that the XV-50 ouput is 25w, but is there a way to _modify_ it so
that its max output is around 10w? I have a 10w --> 150w brick that I would
like
HI
I have the 3080 module fitted in my KX1 and I have already done the power
mod
With the display reading 13.5v I get the following outputs
All power outs measured using the elecraft DL1 and a good Calibrated Fluke
Meter
80m = 3.74W
40m = 4.14 W
30m = 4.74 W
20m = 3.12 W
Running of
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