I think one must be careful how that is worded, early KDVR3s have 15 sec
73 de M0XDF, K3 #174, P3 #108, KX3 #???
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On 13 Jul 2011, at 01:28, Johnny Siu wrote:
Please note that on P.12, the recording time per M1 to M4
Craig Smith wrote:
I certainly understand the impracticality in terms of cost and size of
designing the basic KAT500 with a large number of output ports. My
personal wish is that an optional external Elecraft unit will
eventually be available that will allow for port expansion based on the
Yes, David.
Perhaps, the second last sentence on P.12 should read '... can record at least
10 sec of speech for playback'
This proposed changes will then be in line with KDVR3 manual errata.
TNX 73,
Johnny VR2XMC
從︰ David Ferrington, M0XDF m0...@alphadene.co.uk
收件人︰ Johnny Siu
You insist on making this an either/or kind of choice, and it simply
is not. APF does not make a result in your brain, it simply listens
to slower CW with a very narrow bandwidth. It seems to have times when
it will pull something out of noise, and other times not, by use of
the narrowness.
How about taking the money you'd spend for the KAT500 and put it towards
antenna(s) that don't need a tuner? There are lots of multiband
antennas out there. Some cost less than the likely cost of a KAT500.
73 de Brian/K3KO
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On 7/13/2011 2:58 AM, Brian Alsop wrote:
How about taking the money you'd spend for the KAT500 and put it towards
antenna(s) that don't need a tuner? There are lots of multiband
antennas out there. Some cost less than the likely cost of a KAT500.
That's a REALLY false choice. All of us are
R Thompson wrote:
I would like to hear from someone who has the filter, what their
impressions are. I'm not overly impressed with the DSP as I've
experienced it on my IC-703, but it can make a difference even if it no
longer sounds natural. So I'm leaning towards getting the filter.
Guy, K2AV wrote:
to evaluate diversity, you need to go somewhere and HEAR diversity from a
dual RX K3. Then you'll have the sensory answer to your question,
whether you decide to get it or not.
To get a good taste of diversity for weak signal cw reception, plug a pair
of stereo headphones
Thanks for the explanations and your patience gentlemen.
I've got it now.
73.
chuck
AF4XK
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I have been a K2/100 operator for about ten years mostly on RTTY and CW
utilizing the DSP filter as needed..
1. The SSB capability is needed by the K2 for digital operation. Digital mode
operation is exciting because it can get out at 100 W or less power almost as
effectively as CW verses
Greetings Ian ...
Yes, your proposed idea would be an acceptable approach for me. As you
point out, the two main things are to have the tuner and antenna switching
at a remote location and to have the control mechanism for all the switching
tightly integrated into the K3/KAT500 or
Hi Chuck,
Diversity reception may not work for everybody. My brain can't handle it.
Having a near identical sound in both ears with one side fading in and out
doesn't seem to make it easier for me to copy. I prefer to just switch
between two antennas and listen to the one that sounds best. To do
Thanks for all the replies,
that settles it for me, as I haven't enjoyed my own experiences
with DSP, I'll order the KAF2. And I'll consider the anti-ringing
modification.
Ron VE8RT
On Wed, 2011-07-13 at 03:32 -0700, Bill W4ZV wrote:
R Thompson wrote:
I would like to
Thanks, but I'm not a fan of digital modes. I tried them once, and
tried to have a QSO with someone. He came back and told me that he
didn't QSO, and only sent the info that was pre-programmed in to the
function keys. Other attempts resulted in similar responses. So I
nick-named digital
On Wed, Jul 13, 2011 at 8:20 AM, R Thompson ve...@xplornet.com wrote:
I'm not a fan of digital modes...he only sent the info that was
pre-programmed in to the function keys.
===
You mean you didn't get into ham radio so you could find out some guy's CPU
clock speed and the
On Wed, Jul 13, 2011 at 9:48 AM, Tony Estep estept...@gmail.com wrote:
On Wed, Jul 13, 2011 at 8:20 AM, R Thompson ve...@xplornet.com wrote:
I'm not a fan of digital modes...he only sent the info that was
pre-programmed in to the function keys.
===
You mean you didn't
Hello, Ron...
In past years I used my K2, my Flex 3000 (both sold, now) and my K3 on
one or another of the digital modes, e.g. CW and PSK31 for the most
part, but PSKxx (xx31), Olivia, etc. as well. I would like to speak in
defense of these modes and in support of Elecraft's ability to run
Mike K2MK wrote:
Diversity reception may not work for everybody. My brain can't handle it.
I guess I'm the opposite. I use diversity virtually all the time on
160M-20M. Even when the rx antenna + subrx isn't necessarily making the
signal more readable, I find the stereo effect very
You're not alone -- this is a common tough decision.
I went through this exercise, trying both the KAF2 and the KDSP2, including
side by side comparisons between them. Sounds like you already found your
answer, but if there's any remaining uncertainty I'll be glad to go into
detail offline (will
Does anyone use the NUE-PSK Modem on their K2? Are any filters worthwhile
considering to enhance performance?
73,
Jack VK4JRC
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Ron,
One thing that I forgot to mention is that even though I like the DSP in the
K2, I still use an external analog audio filter. Sometimes it helps and
sometimes not. I'm not completely sold on DSP as it now stands. The
filtering is great but, the denoiser, as most denoisers that I have
The recent 4.39 firmware update reminded me I needed a macro for using CW
Skimmer and the KRX3 in large pileups. Skimmer's 599 function is very
powerful since it gives the exact frequency of the last station worked. The
macro below allows Skimmer to control VFO A. Why not use VFO B for TX?
Brian, would you list for us the multi-band antennas you know that can cover
all
of several bands with a SWR that will allow full power from the K3 without
using
some sort of variable matching mechanism? Of course the SteppIR will do it,
but
it has its own variable matching mechanism built
Hi Cookie,
My Alpha-Delta pretty much meets the no-tuner-needed
requirement. It's just a fan dipole with another name. (:-)
I'm aware of at least five of them in this sparsely ham
populated area. It -is- bandwidth limited on 80/75, but
mine's cut for 3550.
My station is often used in
Whichever works better or BOTH if that works better.
They do different things so I don't think you can answer the
questions which is better.
I think you are trying to justify why to buy the KRX3. And the
answer is a question (sorry): What is your intention for its
use? You stated an
I'll second that Alpha-Delta reference. Full band coverage on 40/20/15/10,
plus about 100kHz on 75/80, partial-full coverage on 17m although it isn't
cut for it, and some 6m as well. Full coverage 80m-6m with tuner...and even
160m, but the efficiency has to be terrible.
And easily handles 500w+
Can someone point me to the 5-pole 500 Hz filter response curve and/or the
shape factor?
Thanks and 73, Don NA6Z
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On Wed, Jul 13, 2011 at 4:19 AM, Fred Jensen k6...@foothill.net wrote:
I think I have this figured out, but don't want to smoke anything in a
moment of non-thinking [they occur with increasing frequency as
birthdays accumulate :-)]
With KPA500 in STBY, I set the power on each band for
And then there's diversity implemented at RF like all the older diversity
receivers used.
In that case you cannot tell that diversity is being used, unless you have a
non-diversity receiver to compare the signal with in real time. The only
difference is that QSB is much reduced and,
Of course my last post on this topic was in jest (humor).
Here are a couple diagrams and photos to illustrate how ridiculous it is:
http://www.kl7uw.com/station%20layout.htm
this is pretty close to the current configuration (note several
multi-pos coax switches):
The request was in response to a statement that the KAT-500 was not required if
an all band antenna was used. The challenge was to name an antenna that
will give full coverage WITHOUT TUNER making the KAT-500 superfluous. Of
course, full coverage of 20 is 14.0 to 14.35 and 80 and 160 are
'Cookie'
Noted...but I think full-band, no-tuner coverage of 40/20/15/10 isn't too
shabby.
Dave
On Wed, Jul 13, 2011 at 1:18 PM, WILLIS COOKE wrco...@yahoo.com wrote:
The request was in response to a statement that the KAT-500 was not
required if an all band antenna was used. The challenge
And full band coverage of 3.5 to 4.0 MHz with an SWR no greater than
2:1 except at the very high end of the band where it goes to 2.5 can
easily be achieved, I have one. Take a look at the ARRL Handbook page
9-16 and you can see it. The magic is in the feedline - 1 wavelength
of 50 ohm
IMHO the demand for a solid state linear amp with antenna tuner and
multiple antenna ports can be split into two niches.
1. Fully integrated portable system of PA, antenna tuner, antenna switch
with multiple ports and programmable band decoder all in one relatively
small package. This system
I'd like to redirect this discussion to what is be desired for an
external antenna / rig switching add-on box for the K3/KPA500 and/or
KAT500. This question may have been missed in my original posting (below).
From that posting:
A much better solution for those needing more than two
For remote.switching signal on the coax.
73,
Dick - KA5KKT
_
I'd like to redirect this discussion to what is be desired for an
external antenna / rig switching add-on box for the K3/KPA500 and/or
KAT500. This question may have been missed in my original posting (below).
Eric,
To be totally versatile, I would think two antennas per band would have
to be available - and that means a total capability of 18 selections.
Yes, the band/antenna should be controlled by the K3, and a 9 position
remote switch on each of the KAT500 outputs should serve any need (a
Whoops, I forgot about the multiband vertical - I need one of 3
antennas to be selected on several bands, not two as I mentioned.
How many antennas do you have for any one band? Rhetorical question,
but Eric might like to know if he is thinking about the switching
arrangement to follow the
1. At least eleven antenna ports: 6 primary bands 160-10, 3 WARC bands, 6
and 2 meters. All of these bands are possible with a K3.
2. At least two radio ports for SO2R, but more would be nice.
3. Generalized ability to user-configure any antenna port to any band.
Example use cases are a
Ron,
I opted to include the KAF2 option when building my K2/100 rather than the
DSP option, and have found that the KAF2 audio filter is a worthwhile
addition to the receiver. FWIW I use a sidetone (beat note) between 350 and
400 Hz when copying CW, and when there is a lot of on frequency QRM
As a general answer, I think 4 ports per band would be sufficient for most
of us.
But by that I mean 4 antenna selections per band. Some of these would be
multiband antennas that are used on more than one band and only need one
connector to the switching network. Balanced output connections
Guys - Please reply just to the list. I am getting two of each reply. :-)
73, Eric
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Hi,
That could be a unit that fits well with the Elecraft concept of a basic
kit with the ability to expand as needed with options. Since most of the parts
for a unit of this type will be human sized it could even make those that like
the smell of rosin happy.
If the unit was
We have added the K3 5 pole filter plots to our crystal filter plot
page. See:
http://www.elecraft.com/K3/K3_filter_plots.htm
We have also updated our FAQ and 'What Filter's should I Buy?' pages:
http://www.elecraft.com/K3/K3FAQ.htm
http://www.elecraft.com/K3/K3/Roofing_Filters.htm
73, Eric
My needs are simple. I'd vote for a simpler, lower-cost box which is
expandable by way of relays, external box, etc. 2-4 outputs is fine by me.
I think a simpler, expandable box that could be used by more users is
preferable (from a user standpoint as well as a biz standpoint) to a more
Here's a thought. I was faced with the problem of having a fairly large
selection of HF antennas, and 3 operating stations. What to do?
After some thought, I decided to create a matrix-type switch that could
control 10 different antennas into any of 5 rigs, in any combination.
That
i have 5 hf ants available to two radios..l...k3 icom plus a third
output on the panel... use top ten devices a/b boxes ( lots of isolation)...
plus also allow whichever is the main radio to select from two amps...
my old herc II instant on and my legal bigger box
none was automated
so
Guys,
My K2 goes into transmit with the first tap of the hand key and stays in
transmit until I remove the key plug from the K2's key jack. What gives?
mikeKB3QJA
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RF in the shack. 73, Guy
On Wed, Jul 13, 2011 at 5:00 PM, vicki glover glover3...@comcast.net wrote:
Guys,
My K2 goes into transmit with the first tap of the hand key and stays in
transmit until I remove the key plug from the K2's key jack. What gives?
mikeKB3QJA
Guys,
Just doing the Part III test and alignment and found that although the keyer
functions works ok, when I select the hand key option and try to key with the
old J38 the transmitter goes to continuous transmit after the first tap of the
key and will not stop unless I disconnect the key.
The output of my XG-2 suddenly dropped by about half on 40 and 20, and it
doesn't oscillate at all on 80.
The regulated voltage is correct at 1.22V. The voltage drop across R2, the
emitter resistor, is about .650V, indicating an emitter current of .03 mA.
The drop across R3, the collector
To all
Look at Kessler Engineering' CX-Auto (and add on for the AT-Auto Palstar) 8
outputs controlled by
the tuner. Or remember back to the Alpha DAS controlled by the 87A and 3rd
party relay boxes, up to
36 antennas.
I agree with Eric get the cables out of the shack.
73 Larry K1ZW
I think that 2 Antenna ports on the KAT500 is a good fit, after all 2
ports is what the K3 (+ATU) has so many of us have configured our
stations to work with this configuration
I would suggest however that there be an (optional?) module (s) for the
KAT500 that provides for sink or source outputs,
Eric,
I have two feed lines to my farm. I use a CAT5 cable to my switch in the
back yard. An Ameritron RCS-8V is the remote switch. I have another 2 line
power cable to a remote tuner to allow use of these antennas. I currently
have to use the switching to disconnect the antennas to ground at
Why not just use two KRC2s? They are complete and shipping. :-)
73, Eric
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On 7/13/2011 4:22 PM, Brendan Minish wrote:
I think that 2 Antenna ports on the KAT500 is a good fit, after all 2
ports is what the K3 (+ATU) has so many of us have configured our
stations to work
Sorry to do this to you guys but .
I need some roofing filter advice:)
Currently I only have the stock 2.7K filter and it has worked fine for
casual rag chewing and some dx'ing.
I've been operating my K3 for over a year and it seems I don't have any
strong signals near me creating problems.
I am considering getting the Elecraft KPA500 amp for use with my Flex-5000a but
need some suggestions on how to wire it to my antennas.
The KPA500 will work from 160 – 6M and I would like to use it with two
dedicated outputs on my 5000. One is for 6 M and the other is to a SteppIR
vertical
Chuck,
I'd go with the 250 Hz 8-pole. It's fine for PSK31 as well as CW and
keeps the in-band blocking to almost nothing.
I have one in both receivers, and it's really surprising what one can
do with it.
73,
matt W6NIA
On Wed, 13 Jul 2011 17:01:44 -0700 (PDT), you wrote:
Sorry to do this to
I admit, I have a dog in this fight but I see the calls for all manner
of add-on antenna switching hardware for the KAT-500, and/or KPA-500
as more than a little lily gilding ... and too much cost/effort for
very little benefit.
1) antenna switches *after* a tuner are problematic to start with.
Sure, you can do it but it won't be cheap - you will need two
transfer relays. Some examples can be found here:
http://www.surplussales.com/Relays/rfcoaxialrelays/rfcoax_n.html
One transfer relay would be connected to the two antenna ports
on the Flex and the antennas would be connected to
On 7/13/2011 5:01 PM, callen1155 wrote:
I need some roofing filter advice:)
Since your interest is weak signal CW but not contesting and you don't
have neighbors blowing away your radio, a roofing filter is not a
particularly high priority for you. Instead, I would concentrate on the
best RX
During Field Day in 2010 I was part of a FD station set up in Hay
River (on the south side of Great Slave Lake). We were using Field Day
to promote amateur radio to the public. Anyway, both the station in Hay
River and bigger club set up back in Yellowknife were aiming to copy the
ARRL FD
The comments on being able to rag chew in digital modes have been
great. My first few experiences weren't encouraging and I was perhaps
too quick to form an opinion. After I get the K2 up and running on CW,
and then SSB, I'll revisit digital modes of operation and maybe be a
little more
On Wed, Jul 13, 2011 at 8:04 PM, R Thompson ve...@xplornet.com wrote:
I'll revisit digital modes of operation
There's more than just PSK and RTTY, of course. If you haven't tried WSPR or
JT65, check 'em out (just Google on them for a flood of info). They offer
variety and
On Wed, Jul 13, 2011 at 7:59 PM, R Thompson ve...@xplornet.com wrote:
I don't know if there are digital modes that would work with auroral
modulation on the signal.
===
JT65 and its variants (FSK441, WSJT9 etc) are made for distorted paths,
including meteor scatter and
Holy smokes. All this talk about 18 antennas and x-by-y matrices and this and
that... whew!
My backyard is 15m by 3m... I'll be fine with one output only. Thanks.
Al W6LX
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To all
This is spam, Canadian pharmacy.
w0...@aol.com, PLEASE run your virus protection software, you might have a
virus.
73 ES CUL DE N3KHK
John R. Klim II
ARRL LM, AMSAT LM
10-10: 68135
30MDG: 1820
QSL: LoTW, Bureau, Direct, eQSL as a
Most hams in Hong Kong live in high rise multi-storey apartments. One to two
ham sticks (i.e. window mounted) have already been good enough. Therefore, 2
antenna outputs in KAT500 will hit the minimum requirements here.
TNX 73,
Johnny VR2XMC
從︰ Al Lorona alor...@sbcglobal.net
收件人︰
Is it just me or has the NR function on the K3 really improved? As I recall,
there was a major upgrade to the DSP modules over the winter, and I am just
amazed at how well NR is eliminating heavy QRM this summer. I can work the low
bands and work DX all summer. Just turn on NR and the noise
Personally, I think that we need a reality check here people.
Let's face it, what we 'want' and what we 'need' are two sometimes vastly
different things.
Wanting to be able to switch up to 18 antennas is so far outside the realms of
sanity to try to implement in an antenna tuner it's ridiculous.
Dave, What NR settings do you use?
73,
Randy, KS4L
On Jul 13, 2011, at 9:02 PM, Dave Perry n...@comcast.net wrote:
Is it just me or has the NR function on the K3 really improved? As I recall,
there was a major upgrade to the DSP modules over the winter, and I am just
amazed at how well NR
Good summary, Jeff.
I'd like to also emphasize that there are a good number of us out here with
deed restriction/covenant situations that have to use a single HF antenna
(175' inverted L here) with an external, outdoor tuner. We are all waiting
for an external option or version of the KAT-500.
Want's ALWAYS exceed the Need...:-)
Gary
On 14 July 2011 13:10, Oscar Staudt wb5...@gmail.com wrote:
Good summary, Jeff.
I'd like to also emphasize that there are a good number of us out here with
deed restriction/covenant situations that have to use a single HF antenna
(175' inverted L
Eric Swartz - WA6HHQ, Elecraft wrote:
...
http://www.elecraft.com/K3/K3/Roofing_Filters.htm
This page looks broken to me; I get the full K3 product page, but with all
broken images.
Leigh/WA5ZNU
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View this message in context:
Station KPH/KFS in California participated in the Night of Nights
operations this week marking another anniversary since the end of CW as the
mainstay of Safety of Life at Sea (SOLAS).
http://www.youtube.com/watch?v=-FxuVquKP74
Check out the sidetone-- very typical of commercial CW gear
Well, shoot, Al. I'm on an acre here and my antenna count is two - an
inverted L for HF and an omnidirectional 2 meter antenna.
Not all of us want to spend the time/money on a tower stacked with antennas,
Hi!
73,
Ron AC7AC
-Original Message-
Holy smokes. All this talk about 18
Suppose you really wanted to decide the best design strategy for a maker of
antenna tuners. You might think as follows:
All potential buyers have at least one antenna. Some have two, some three,
etc. As you add more outputs on the back of the tuner, you increase
potential sales, but you also
I'll try to keep those modes of operation in mind. And finding a net or
website for those modes of operation would help in making skeds. Modes
that will handle some distortion are worth looking into. Thanks again.
It might actually be fun.
Ron VE8RT
On Wed, 2011-07-13 at 20:28
I am so confused now I will just stick with the manual tuner with 3 antenna
ports.
Gary
On 14 July 2011 13:46, Tony Estep estept...@gmail.com wrote:
Suppose you really wanted to decide the best design strategy for a maker of
antenna tuners. You might think as follows:
All potential buyers
On Wed, Jul 13, 2011 at 11:00 PM, R Thompson ve...@xplornet.com wrote:
...a net or website for those modes...
===
http://hflink.com/jt65/
http://www.physics.princeton.edu/pulsar/K1JT/
http://en.wikipedia.org/wiki/WSJT_(Amateur_radio_software)
If you like ragchewing, you'll probably be disappointed in JT65. It's got 1
minute transmit, 1 minute receive cycles and it only can send 13 characters per
over.
Works great for EME and simple exchanges, but not conversing. It was
originally developed for EME and handles odd distortion like
I purchased a K3 and P3 together, about 6 months ago, and recently became
aware that a Nifty! Mini-Manual is available for the P3. (http:
www.niftyaccessories.com)
What a brake for me! With the new manual with it's color photos, and
detailed programming instructions, now I can really get the P3
In either format I think that it should have not more than 2 inputs,
3 unbalanced and one balanced output and that the tuner should be
capable of matching a 10:1 VSWR load. (As compared to 50 ohms)
There is a lot of lily gilding here ... the tuner, in either format
does not need more
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