Roy,
It is likely that a 40m 1/4 wave vertical and a 30m 1/4 wave vertical fed in
parallel, will exhibit about 3 - 4db less gain on 30m than if you used only
a 40m 1/4 wave on both bands. One reason for this is that when 40m and 30m
1/4 wave verticals are fed in parallel, the feedpoint
Hello Roy,
Yes, an 80m / 40m arrangement would be plausible. Although I appreciate that
you will be using buried radials, if the radials were elevated, a set for
each band would be required.
An alternative would be to use a form of close coupled half wave resonator
on 40m. This would consist
Mike,
My K2/100 stayed put without any issues while running 24/7 in receive mode
for almost two years, while monitoring for any 2 metre openings across the
pond. I did disable the transmitter to avoid accidental frying of the 2
metre converter.
In normal use on 40m, it drifts about 10 Hz
David,
Double shielded coax would certainly reduce leakage from the coax, and is a
good investment in my opinion. However its use might not have too much
impact on the receiver's birdie problem, because many of the rogue signals
involved are probably flowing on the outside of the coax's braid,
Hello John,
That could reduce any trash from a router is , but it would not remove any
of the receiver's self inflicted birdies.
73,
Geoff
GM4ESD
John Lemay wrote on Thursday, March 05, 2009 10:28 AM
Hello all
I think it may be useful to tackle this problem from the other direction,
and
It might help, but it might not, because until such time as the source of a
particular birdie is contained or removed, it will remain to be a source of
a birdie. If you block one route, these birds have a habit of finding
another, especially if the layout is open plan.
73,
Geoff
GM4ESD
Jim Brown
On Tuesday, March 03, 2009 at 4:34 PM, Jim Brown wrote.
On Tue, 3 Mar 2009 01:53:19 -, Geoffrey Mackenzie-Kennedy wrote:
Yes, I take your point. It is the fine tweaking of phase that I find
easier
to do with a capacitor!!
Please tell me how you would do that with this antenna
Mike,
When mounting toroidal coils used at HF which sit upright on a pcb, my
practice is to glue a small shim or spacer flat onto the main pcb where the
coil is to be placed, and then glue the toroidal coil onto the spacer. I
make spacers from scrap pieces of fibreglass pcb, the type that does
Jim Brown wrote on Monday, March 02, 2009, at 11:09 PM:
A few quibbles with your analysis. First, the antenna that I have
described is
a simple half wave dipole, fed at a current maxima. The only tricky part
is
the power rating of the choke that serves as the end insulator. My choke
is
Jim Brown wrote on Tuesday, March 03, 2009 at 12:59 AM
A coaxial choke wound on a ferrite core IS a parallel resonant circuit.
Properly done, the choke should be wound to place the resonant frequency
where the antenna will be operated! Study the references I cited in the
earlier post.
Yes,
Larry N8LP wrote on 24 Februay 2009, at 02:40.
I think the days of receivers with xtal filters are numbered. High speed
ADCs capable of 140dB dynamic range without xtal filtering are on the
horizon. A 20-bit ADC with enough processing gain would do it.
--
Vic K2VCO wrote on Saturday, February 21, 2009 3:32 PM
The cause in the K2 case is that the CW sidetone oscillator signal gets
into the VCO's varicap circuit and frequency modulates the VCO. The
sidebands that I can see coming from my K2 in CW mode are symmetrical
above and below carrier,
Hi Doug,
This certainly happens with the K2.
The cause in the K2 case is that the CW sidetone oscillator signal gets into
the VCO's varicap circuit and frequency modulates the VCO. The sidebands
that I can see coming from my K2 in CW mode are symmetrical above and below
carrier, one pair
JOHN LAWRENCE j...@hughes.net wrote on Tuesday, February 17, 2009 2:32 AM
May I suggest to the Elecraft staff that a Human engineering change be
offered for the 60 yo as a reward for being licensed over half a century.
This special feature requires a K3 with a frequency
TX inhibit feature
Julian, G4ILO wrote on Tuesday, February 17, 2009 4:04 PM
Anyone who claims the K3 is the greatest rig ever is being blinded by
those
IP3 numbers. But state of the art SDR designs like the Perseus manage to
achieve as good or better receiver dynamic range without all those
expensive
I take your point, and the K3 does appear to have redefined the
cost/performance expectations. I was thinking along the lines that in this
part of Europe, those of us who attempt to work SSB DX among the monster BC
signals on 40m do need a receiver that does not collapse when hit by BC
signals
Ian GM3SEK wrote:
Quick split - otherwise known as auto split or pileup split - is
an option that has been available in serious transceivers for almost
twenty years.
Make that forty or so Ian if homebrewed rigs count :-)
When using multiple offset auto split I find it useful to have the actual
Jan Erik Holm wrote on Monday, January 26, 2009 8:52 AM
As you say, it´s getting rare these days with radios in the
-30 to -40 dB bracket. And we are just going to be content
with it? No not IMO.
Jan,
I agree in the context of Amateur Service radios.
The time might come perhaps sooner than
David,
Sorry for being slow to reply.
You wrote:
Is there a sweet spot to which one can adjust the power output for
minimum IMD,
In general terms the short answer is that there might be. If the two tone
signal driving an amplifier under test is very 'clean' in terms of odd order
IMD
Hi Wayne,
Look forward to that! One suggestion, the 40m frequency 7040 kHz is used by
Eu RTTY stations (S9 ++ here at times) which makes copy of US CW signals on
7040 +- quite difficult if not impossible here. Ty W1TF suggested 7052 kHz,
but that is in the 'bottom' of the Eu 'phone band which is
Pete F5VNB wrote:
Joe Subich, W4TV wrote:
Absolutely not! When conventional rigs are generating ALC
their final amplifiers are ALREADY in compression and they
are generating IMD in the PSK31 signal.
A bit sweeping, Joe. Surely any sane engineer would put the onset of
system ALC at a
Ron D'Eau Claire wrote on Tuesday, January 13, 2009 4:26 PM :
That's pretty typical for the bottom of the sunspot cycle. The bands
don't
die. The optimum frequencies just move down during this time.
Ron AC7AC
-
Condx on 40m have
Hi Kevin,
Sorry to hear about your trials and tribulations, are you using pulleys and
a counterweight as part of your antenna's support system?
A fused counterweight that is allowed to disconnect from the hoist line
also works well as a protective device should a tall tree fall across an
Happy Birthday Bill.
Can the K3 open the wine and make good coffee?
Have a good day.
73,
Geoff
GM4ESD
Homebrew
K2/100 #3255
- Original Message -
From: aa1o aa1o.ra...@comcast.net
To: Terry Schieler terry.schie...@wirelessusa.com;
elecraft@mailman.qth.net
Sent: Sunday, January 11,
Wes Stewart N7WS wrote:
I'm still playing with my new K3 and finally got around to listening on
6-meters. There are so many birdies as to make it unusable.
At first I thought they might be external, and some were generated in my
Lenovo laptop, but shutting it down and terminating the K3
Steve,
I have had the same problem and would appreciate any feedback.
73,
Geoff
GM4ESD
- Original Message -
From: S Sacco
To: elecraft@mailman.qth.net
Sent: Monday, January 05, 2009 8:46 PM
Subject: [Elecraft] OT: VP6DX Ducie Island
Does anyone know how to contact an actual human
Thanks Gian, will be in touch about this ASAP.
73,
Geoff
GM4ESD
- Original Message -
From: Giancarlo Moda i7...@yahoo.com
To: elecraft@mailman.qth.net
Sent: Sunday, December 14, 2008 8:29 PM
Subject: [Elecraft] Not Elecraft - PA3AKE Project update - DDS
Hi all,
I have been talking
Ron AC7AC wrote:
Crafts stores that sell supplies for those making stained glass windows
generally carry narrow rolls of copper strip with adhesive on one side. It
seems to me that would make a nice grounding strip. Solder a 1 meg
resistor
at one end with a wire to ground.
Hello Dave,
Unless my AVG package is not catching an attempt to download malicious
software, all appeared to be well when I visited this site. A subsequent
scan of my PC just warned about a cookie, which it does regularly.
73,
Geoff
GM4ESD
Dave G4AON wrote:
For some reason when I tried
Hank,
My suggestion is use a classic link coupled balanced antenna tuner. If you
cannot find one to buy the cost of building one for 6m at the 100w power
level should not be very high. The third edition of 'The Radio Amateur's VHF
Manual' (ARRL) contains a couple of examples for use at other
Hi John,
In this part of Scotland (approx 56N 3W), the carrier levels of many of the
BC stations at 7100 kHz and above get up to +5dbm / +10dbm if propagation is
normal. These are measured levels at the shack end of a coax feeder with
my backup 40m dipole at 70ft selected and in use. It is
Lennart SM7BIC wrote on Tuesday, December 02, 2008 at 11:18 AM
However it turned out that his
recommended converter Keyspan usa-19hs including a serial cable cannot be
found in SM and Amazon.com as an example does not export those precious
little gems outside NA.
Philip Covington wrote on Monday, December 01, 2008 at 3:13 PM
The Perseus actually out performs the K3 receiver regardless of what
the recent ARRL test reports. I agree that the ARRL needs to come up
with valid tests to evaluate real world performance of digital
receivers such as the Perseus,
Barry N1EU wrote:
ab2tc wrote:
I am fully aware that slow AGC has its limitations in the presence of
static crashes, although the K3 does a fairly good job of not hanging
on
those. All I and others are asking is that the receiver not remember the
signal strength prior to transmitting, but
Ignacy wrote:
If there is a problem with those capacitors at 30dbm, I am wondering about
the power amps especially SS where ceramic caps are used extensively.
Seems
nearly all amp's IMD cam generated in those caps. Am I missing something?
Toby Deinhardt wrote on Thursday, November 27, 2008 at 9:17 AM:
you might want to read the description by PA3AKE, especially the chapters
on his development of his roofers:
http://www.xs4all.nl/~martein/pa3ake/hmode/index.html
He talks about, among other things, how important clean surfaces
Toby Deinhardt wrote on Thursday, November 27, 2008 3:33 PM:
Hi Toby,
It also depends on whether you are talking about signals within the pass
band of the roofing filter or signals in the stop band. I would argue that
within the roofing pass band the K3 does have weaknesses, but if the
David,
If you have not read it, the December 2008 issue of QST contains another
review of the Perseus.
Although I own a Perseus, which I bought for use as a piece of test
equipment, I do not own a K3 thus cannot compare their 'sound'. I can say
though that I have never been comfortable with
Fair enough, but if the sound card was being overdriven in their *two tone*
tests, the same IMD products should appear in the two tone test trsults from
all four types of receiver which is not the case. This assumes of course
that the input levels to the sound card are the same plus minus a
David Ferrington, M0XDF, wrote on Thursday, October 23, 2008 2:10 AM
. hell, no 6M until next May anyway! :-)
73 de M0XDF, K3 #174
Don't count on that! :-) At any point in a solar cycle 6m 'Sporadic E'
openings do occur during any month
With respect Kevin the 'culprit' responsible for this birdie in my K2 is the
(LO + IF) / 2 spurious response of the receiver which can 'hear' the PLL
reference oscillator. When the receiver is tuned to 14.360 MHz the frequency
of this particular response, assuming a 4.914 MHz IF, is (19.274 +
Hello Dave,
Tonight I will check the strength of the 7260 kHz harmonic radiated by my
40m antenna used on 80m, if suitably low I'll try to keep you company.
73,
Geoff
GM4ESD
Homebrew.
K2/100 #3255
Dave G4AON wrote on Saturday, October 11, 2008 at 6:19 PM
Several of the usual net members
Graham,
Last year I had exactly the same problem which resulted in my being
Disabled from this List on a fairly routine basis. I changed my ISP which
had been Orange and my problem disappeared, which might have been
coincidence. *But* recently I was Disabled again for the same reason -
Julian, G4ILO wrote on Friday, September 26, 2008 11:28 PM
Whatever happened to just turning the radio on and listening. :)
Agreed, but also trying a few CQs on a dead band! If everybody just
listened a band would sound to be dead :-)
The IARU beacons imho are very useful indicators but
and main.
I get the same RX results on the receive ANT.
Geoffrey Mackenzie-Kennedy wrote on September 23, 2008:
Don and Mark,
I note that Mark said virtually no receive on 40m and not no
receive on 40m, from which I would understand that his K2 receiver's
sensitivity on 40m has become poor and only
Try removing and reseating the MCU (U6) on the Control Board before
switching on, this will clean the contacts and could solve your problem.
I have had the same problem with my K2.
73,
Geoff
GM4ESD
Jean-François Ménard wrote on Friday, September 19, 2008 2:55 AM
Hi everybody,
I have my
Would it be useful to call it Vdb, i.e. a voltage measurement not
necessarily using the 1V RMS standard reference?
73,
Geoff
GM4ESD
On Tue, 16 Sep 2008 15:40:04 -0700, Lyle Johnson wrote:
Maybe dBv stands for dB variable, not dB with respect to a volt.
Not with respect one volt, but
Chuck,
My K2/100 #3255 built in 2003 has behaved in a similar fashion twice, the
first episode taking place in 2005 after the rig had been in receive mode
for several hours. The only front panel control that had any effect was the
power ON-OFF switch.
In my case the problem was caused by
Don,
As a homebrewer I agree with your comment about magnetic tips. A tool
which I find very useful is a Grabber, the type which has three spring
loaded prongs. With this inexpensive tool it is quite easy to place a screw
and lockwasher at the same time into those long reach places without
Last year QTH.NET was constantly bouncing my postings to the Elecraft
Discussion List for quote geographical reasons unquote. Recently they (it)
have started to do this again.
73,
Geoff
GM4ESD
Julian, G4ILO wrote:
Joe Subich, W4TV-3 wrote:
It's not that all postings are being bounced.
Jack,
Although I do not have any details to hand there is some Amateur CW activity
in Europe within a few kHz of 500 kHz, and I believe that crossband to HF
contacts are made also.
73,
Geoff
GM4ESD
Jack Smith wrote:
Those interested in listening to signals below 500 KHz with their K2 or
My thought is that the problem was caused by one or more of the natural
spurious responses of the KX-1's receiver, not by some harmonic or spur
generated by the BC transmitters themselves. BC transmitter harmonics might
also be generated and heard if you had a rusty bolt problem caused by say
David Woolley wrote on Sunday, August 17, 2008 at 1:02 PM
Actually one might put them on the input, in the sense that one might have
a balanced feeder at close to 200 ohms and a balanced tuner at the antenna
end. That's probably the only case in which they would work well. (Given
that good
Ron D'Eau Claire wrote:
Recently I was accused of calling CQ off frequency on SSB!
Off frequency? I wasn't in QSO with anyone. That was the point of the
CQ!
It turned out the other station was tuning on the zeros like you
suggest,
and was of the opinion that everyone should do that.
Randy,
Do you find this with or without a 50 ohm dummy load connected in place of
an antenna?
If without a load connected, does the noise level on 10m and 12m drop if you
connect a 50 ohm load or 47 ohm resistor in place of the antenna, and can
you see / hear any difference in the noise
Chris,
When you say 'without any filter engaged' am I right in assuming that this
means that you have bypassed the KSB2's crystal filter and the K2's IF
crystal filter? If that is the case then the K2's circuits after its TUF
mixer would behave in the same way as a simple direct conversion
Jack Smith wrote on Thursday, July 31, 2008 at 7:08 PM:
There's also a possible concern with the chokes generating harmonics if
driven into or close to magnetic saturation.
Jack's warning is one good reason why chokes wound on ferrite cores, or
powdered iron cores, for use as 'static
As you have I have tried many different ways of getting a line into a tree
during the past 50 years, well 60 :-) The problems that I have always found
with shooting, casting or throwing a thin line with a weight or ball at its
end is that too often the end wraps itself around a branch or gets
Good 'law', fine birds. Anyway a Buzzard could demolish a flying tennis ball
:-)
73,
Geoff
GM4ESD
From: Brett Howard [EMAIL PROTECTED]
Oh it is here too... My comment was mostly tongue in cheek... But it
would be fun practice. ;)
On Sun, 2008-07-27 at 11:27 +0200, Simon Brown (HB9DRV)
Ron,
The information which I have sent to those who expressed interest contained
a sketch which I believe would not be allowed in a post to the List. I could
replace the diagram by some text if you think that I should post it, but
unfortunately I won't be able to do that today. I hope that
Hi Martin,
By any chance are you thinking about the method I use? We discussed it a few
years ago, please contact me off-List if you think that it might be. I have
since 'refined' the hardware used to get up 100ft plus pine trees in roughly
25ft stages, which also allows accurate positioning of
That figures, this birdie gets to the point of entry into the signal path
via two birth routes, so it is not surprising that the strength of this
birdie is different receiver to receiver. The dominant source of this birdie
is the PLL refernce oscillator which is 'heard' by the 2LO - IF spurious
I had a similar isolation problem between ANT 1 and ANT 2 in my KAT100,
discovered by accident after working somebody in EU on 15m using a shielded
dummy load connected to ANT 2. Replacing the bare leads between the
switching relay and connectors with coax increased the isolation
My K2/100 #3255 receiver produced a strong birdie at or within a couple
hundred Hz of 3590 kHz. Unfortunately I do not have most of my 'K2 Birdie'
notes here, but IIRC there is at least one receiver crossover spurious
response which results in this birdie.
73,
Geoff
GM4ESD
- Original
You are correct in saying that the birdie is being generated inside the K2.
What is happening is that the fundamental or a harmonic of some oscillator
inside the K2, or a mixture from two or more oscillators, is equal in
frequency to one of the many spurious response frequencies of the K2's
Jim N2EY wrote:
Even odder, FCC refers to 3.5-3.6 MHz as 80 meters and 3.6-4.0 MHz as
75
meters as if they were not right next to each other.
I am not making this up. When I first heard about it, I thought my leg was
being pulled, so I went and checked.
Tradition in Region 2 was that 80
Hi Dave,
I know I should also model this thing in EZNEC, but have not taken the
time
to learn how to use it yet. Seems a little daunting when I look at it.
When you do have the time to try EZNEC you will find that it is quite easy
to use. Transmission line programs are also very useful
While I agree with you David and Julian's point about shipping costs etc, I
would suggest that in this case the fundamental questions are whether or not
the filter's specification does include IIP3 minimum limits and what are
they. Because, and understandably so, the dynamic range data
Ken Kopp wrote:
There are AM users in the SW spectrum that aren't BC station on 5 kHz
steps.
---
Many SW BC stations in Regions 1,2 and 3 aren't either especially in the
'Tropical BC Bands', a large number in S.America.
73,
Geoff
GM4ESD
Minus 40 degrees :-)
73,
Geoff
GM4ESD
- Original Message -
From: ON4WIX [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; 'Lyle Johnson' [EMAIL PROTECTED];
[EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net; [EMAIL PROTECTED]
Sent: Wednesday, June 18, 2008 7:50 AM
Subject: Re: [Elecraft] K3 - REF
David Woolley (E.L) wrote on Sunday, June 08, 2008 at 10:59 AM
That would suggest an error in your CAL PLL data. I'd suggest
re-calibrating the 4MHz oscillator then doing CAL PLL. It may be
advisable to recalibrate the filters, as your 4MHz may have been wrong.
Normally you only need to
If I remember correctly it was Collins who first came up with the idea of
using a simple secondary 'noise receiver' to blank the main receiver in HF
SSB mobile installations using the KWM -1 and / or KWM-2A transceivers. The
secondary 'noise' receiver was tuned to a frequency above 30 MHz and
Please ignore.
GM4ESD
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Help:
Dave,
If you jack up the the type of 8V regulator used in the K2 by adding a
diode in series with the regulators ground lead, have you found any sign of
oscillation at the regulator's 8V output terminal? Also, if my memory is
working properly, the regulator's ground lead is connected to its
According to Schneider's website they supply automation equipent amongst
other things. Are human operators of Elecraft and other ham rigs going to
become redundant sooner than later?
73,
Geoff
GM4ESD
David Pratt G4DMP wrote on Wednesday, June 04, 2008 at 10:54 AM
Perhaps Robert Brown would
Jerry Flanders wrote on Tuesday, June 03, 2008 1:34 AM
I also have one of Jack Smith's Z-1U buffer amplifiers (Clifton
Laboratories) running between the K3's KXV3 output and the SR40 for
isolation. (I didn't test to see if the isolation is really needed - maybe
not, since the LO is offset
Hello Bill,
Well said Sir :-)
73,
Geoff
GM4ESD
Every time I see the term ESSB I see red. I wonder if these folks
have ever read FCC Part 97.307 (a) Emission Standards:
(a) No amateur station transmission shall occupy more bandwidth than
necessary for the information rate and emission
Are,
Do you have anything attached to J13 (Xverter Interface)? If not a
resistance measurement between pin 7 of one of the relays K1, K2 etc and
ground with the K2 switched OFF, and W6 removed, should read a very high
value, I would expect 1 Megohm.
There is also the remote possibility
A type of antenna that I keep packed for use at short notice is a halfwave
centre fed dipole for use as a vertical, where part of the coax feeder forms
the bottom half of the dipole. With this arrangement the coax feeder comes
away from the bottom of the antenna not from the centre, radials are
Hello Jon,
My apology for a slow response, waging war with the grass all day!
To terminate the radiating part of the coax I use a high impedance trap
whose inductance is a length of the incoming feeder wound as a solenoid,
with the turns spaced slightly. To determine the capacitance required
Don,
Perhaps you have suggested one possible solution to making the output from
DSP sound less harsh ('yucky' is a better term IMHO), add some harmonics of
the desired output signal. I can't at the moment see how this could be done
with relatively simple circuitry which would have to
That's allowed :-)
73,
Geoff
GM4ESD
Stewart Baker wrote on Wednesday, May 07, 2008 3:59 PM
How about the End Fed Dipole :-))
73
Stewart G3RXQ
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Hi Bob,
With mains / battery disconnected, this one uses a Ground Stick as well
after being bitten hard by a supposedly discharged capacitor too many years
ago!
73,
Geoff
GM4ESD
Robert Tellefsen [EMAIL PROTECTED] wrote on Saturday, April 19, 2008 10:39
PM
Hi Ron
I've noticed a lot of
David Woolley wrote:
Craig D. Smith wrote:
Most everyone I know (including me) who uses the BuddiPole as a vertical
uses a single quarter wave elevated radial or counterpoise wire. This
costs
That could equally be viewed as being a quarter wave, horizontal antenna
with a vertical
Mike Morrow [EMAIL PROTECTED] wrote on Thursday, April 17, 2008 9:12 PM
One can make contacts with even the poorest of antennas, and not realize
how
poor the performance is. Side-by-side tests out in the boonies is the
real
test of relative performance. Nothing beats that!
Thanks Gian. It might be of interest to people in Europe who homebrew as
well as buy rigs that contrary to popular wisdom and based on 'on air' use,
the high IMDDR3 at 1 kHz spacing of Martein's front end and roofing filter
is worth having when working SSB DX zero beat with or among the 40m BC
David,
May I get back to you later this evening off-list with some thoughts about
this approach. An advantage gained by using a variable IF is that the
close-in phase noise of the first mixer's fixed frequency LO injection can
be very low indeed, but there are other disadvantages.
The gain
A dynamic loudpeaker would work if you can't get hold of a real mic for a
quick try. I believe that the K3 has enough audio gain.
73,
Geoff
GM4ESD
Jim Miller AB3CV wrote:
I've got a K3 kit on order with delivery expected sometime this summer,
optimistically June.
I'm exclusively a CW op at
Julian G4ILO wrote:
In any event, ALC
should not have an effect on a laboratory IMD test since the two tones are
not varying in amplitude, unlike a real SSB or PSK signal. So the
laboratory
IMD test bears little relationship to the real world.
Perhaps. In the case of two constant level test
Hi David,
Let me play the Devil's Advocate and offer a thought about soldering antenna
wire. Seems to me that the practice of soldering the wire loops at the end
insulators of a wire antenna, as suggested in the ARRL Antenna Handbook for
example, could result in the wire breaking prematurely
To answer your last question, PA3AKE has published 3rd Order Dynamic Range
data with both signals in the passband of the roofing filter of a homebrewed
receiver's front end. You might like to look at his website. In my
experience when working 40m SSB DX zero beat with a BC station's carrier,
As has already been said there does not seem to be any correlation between a
sloar cycle and the occurrence of sporadic E (Es) openings on 6m, certainly
at temperate latitudes. But something worth watching for during years of
high solar activity, especially around the time of an equinox, are
If Crossband Split mode is not an available feature, when working Split in
the same band, and using your example, I would have thought that the band
select control system could be used to tell the K3 that 225 means 7.225 MHz
Sorry I don't know if the K3 can operate in Crossband Split mode (you
David Ferrington, M0XDF wrote on Monday, March 03, 2008 11:28 AM
Perhaps we should wait for the KRX3 to be available and then use it a
little, before asking for Split mods?
A second receiver built into the system is certainly the better option,
especially when using Crossband Split, no relay
Sarah K. [EMAIL PROTECTED] wrote on Friday, February 29, 2008 at 7:20 PM
The other tool I use a lot is a pair of bent-nose locking tweezers
that I got from Micro-Mark. They're actually to big for any of the
really tiny parts, but in a lot of cases I can use them to clamp down
a SMD resistor
Ian J Maude [EMAIL PROTECTED] wrote:
Good grief, Elecraft are running a business, not a charity. They do not
have to explain a thing until they wish to.
Very true Ian, but if the K3 natives are getting restless perhaps some
simple comment such as 'it's on the list' might help to stop the
proposal. A little
higher?
Windy
On Feb 28, 2008, at 6:01 PM, Geoffrey Mackenzie-Kennedy wrote:
Although I am not buying a K3, I hope that you will find this comment
about the 7.195 MHz net frequency of some use. During some weekdays
around 0200Z, and I think that Thursday is one of the days
Mike,
If of any interest to you VP6DX was peaking here on 40m short path around
08:20Z (CW contact at 08:14Z and SSB at 08:51Z), and strong on 15m short
path for a good hour during our afternoon (CW contact at 16:48Z before SSB
contact at 16:37Z). Have heard them on 40m long path during the
Trevor Smithers [EMAIL PROTECTED] wrote on Monday, February 25, 2008 at
1:51 PM:
What you really need is a method of identifying the actual ssb speech
waveform, extracting the noise
from it leaving the signal in the clear. There is a company in Germany
that produces an outboard unit
that I
Jim [EMAIL PROTECTED] wrote on Thursday, February 21, 2008 at 2:03 AM:
It only takes a little bit of nonlinearity to create distortion products.
For
example, suppose an amplifier with 100W output has enough nonlinearity to
produce a distortion product that is 1 watt. Such an amp's distortion
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