Alan G0HIQ wrote on Friday, June 15, 2007 11:52 AM :
The original purpose of the UK Foundation licence 'approved
kit' rule was to limit the likelihood of a M3 (ie
Foundation) amateur transmitting out of band either by
excessive tuning range or excessive spurious. However the
merit of allowing
On 6/13/07, J F [EMAIL PROTECTED] wrote:
It might be fun to have a little friendly competition
between Elecrafters... Actually, there is a bit of
that already.
--
Great idea!
Geoff
GM4ESD
___
Bruce McLaughlin [EMAIL PROTECTED] wrote:
I don't know of any other radio currently
using audio reconstruction. Perhaps it's because it doesn't work or
hasn't been high on the priority list. In any case, I think it's a very
interesting idea.
John GM4SLV [EMAIL PROTECTED] wrote:
I live in the Shetland Islands, where there are no trees to speak of,
and no conkers, so haven't been able to play for some years!
-
Let me know if you become desperate, this place hoaches with
Kevin Rock [EMAIL PROTECTED] wrote:
I am sitting here sipping my coffee and merrily reading my email when I
come upon a word I don't know. As dad always told me, Look it up! So
being a dutiful son I used what is putatively called an English
dictionary. Well, somehow this word was not
IMHO you are correct. As I understand it R and S were intended to report on
how well a signal was being received with T being an honest report of 'tone'
in the case of CW signals. I believe that the matter of signal reports began
to become 'confused' sometime before I first got on the air in
IMHO you are correct. As I understand it R and S were intended to report on
how well a signal was being received with T being an honest report of 'tone'
in the case of CW signals. I believe that the matter of signal reports began
to become 'confused' sometime before I first got on the air in 1946
David Pratt [EMAIL PROTECTED] wrote:
FWIW the external plug-in Eddystone S-meter (Cat.669/E)for the 640 has
printed on the scale 1 DIVISION = 4db, OTOH the internal S-meter on my
680X says 1R = 6db.
Interesting, the 640 manual I
My pleasure Mike, my 3am Autopilot appeared to be working, maybe!
One final comment. The two in passband signal tests will tell you how a
receiver will perform in use for example in a pile up situation where the DX
station is not working split, whereas the wide spacing tests will only give
Don,
Your suggestion that both applied signals should be in the receiver's
passband in order to obtain a 'figure of merit' agrees with the argument for
a more useful 3rd Order dynamic range test on amateur receivers, a
discussion which has been taking place for several years as far as I know.
Curt,
Would you not agree that a 3rd Order dynamic range test performed with both
test tones placed outside of the IF filter's passband ,with a product in the
passband, does not provide a complete measure of a receiver's odd order IMD
performance but only that of its front end? A receiver
J F [EMAIL PROTECTED] wrote :
Lately, I've noticed a lot of folks who send quite
slow and I speculate these are first time contesters.
I figure they want to learn the game, but may get
frustrated if blown out of the water.
The last few big contests I picked up some nice
multipliers from guys
FWIW I use a Coax arrestor in the main feeder right at the antenna selector
switch in the garden, *and* wind the main coax feeder into coils of two
turns approx 1ft diameter before the feeder goes underground at the switch
end, also at the house end right after it surfaces. For open wire lines
Jack Smith [EMAIL PROTECTED] wrote:
First, I have a definite bias to stand-alone equipment that works without
a computer.
I'll second that!
.On HF, a panadapter can show you a pile up quickly, or in general give you
a good idea where the activity is at any given instant.
In a pile up
Ron D'Eau Claire [EMAIL PROTECTED] wrote:
There's a *huge* performance tradeoff involved in trying to see the a
wide
frequency range on a 'scope and trying to hear *one* weak signal. In
receivers with a front end that is broad as a barn (including the first
I.F. in modern receivers), the
I wonder where HM Customs draw the line vis a vis Import Duty between a
'kit' and a bunch of pre-assembled modules? I have not asked them in case it
gives them any new ideas ;-)
Geoff
GM4ESD
- Original Message -
From: Simon Brown (HB9DRV) [EMAIL PROTECTED]
To:
You are quite right.
73,
Geoff
GM4ESD
David Pratt [EMAIL PROTECTED] wrote:
Best not discuss this in open forum, chaps.
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In an issue of Radcom published between 1999 and 2006, which I shall have to
find, IIRC there is some comment on the the G5RV with references. If I
remember correctly Captain Varney G5RV first published the design in the
1940s, could well have been in 1946, and the antenna was intended to be
J F [EMAIL PROTECTED] wrote:
maybe even catch you
in a contest!
--
Hope so, if you behave and observe our bandplans which many Eus ignore :-)
73,
Geoff
GM4ESD
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Post to:
Brian Lloyd [EMAIL PROTECTED]
wrote on Thursday, May 17, 2007 at 4:37 AM
And I have never found a receiver that had a calibrated S-meter.
Oh that's the reason for You are S9, what's your call , name and my report
again please?
Perhaps it's time for S meters to be calibrated in input dbm?
Now there's a thought :-)
73,
Geoff
GM4ESD
Phillip Buckholdt [EMAIL PROTECTED] wrote
How about bringing back the 6U5 Tuning eye.
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If you became a member of the RSGB you would get Radcom every month :-)
73,
Geoff
GM4ESD
J F [EMAIL PROTECTED] wrote:
We always had access to all of the US magazines. Wish
it were easier to pick up a copy of none US radio
magazines here (then and now)
73,
Julius
n2wn
Also in QEX March / April 2003 page 21.
Perhaps we should close this OT thread before Eric barks :-)
Geoff
GM4ESD
- Original Message -
From: Giancarlo Moda [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Saturday, May 12, 2007 5:29 PM
Subject: Re: [Elecraft] Tayloe mixer, was
Hi Julius,
It might have something to do with Intellectual Title, but not being well
versed in such matters I could well be wrong. I have read very recently that
the H-Mode is being used in a new receiver for military use, and I know that
Rhode Schwarz use a very similar mixer in one of
Hi Julius,
J F [EMAIL PROTECTED] wrote:
It seems strange to me that it lingers more on the
fringes than moving into the mainstream. If it's been
around for 15 or more years, one would think something
could have been negotiated regarding any intellectual
rights.
I think that it has, but not
[EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]; Bill Coleman
[EMAIL PROTECTED]
Cc: Giancarlo Moda I7SWX [EMAIL PROTECTED]; Elecraft Discussion List
elecraft@mailman.qth.net
Sent: Wednesday, May 09, 2007 2:58 PM
Subject: Re: [Elecraft] Improvement changes to K2 and K1
Hi Gian,
Your messages have arrived!!
Giancarlo Moda [EMAIL PROTECTED] wrote:
on Wednesday, May 09, 2007 2:48 PM
Geoff you are right. Certainly the H-Mode Mixer has
higher IMD performances then TUF-1 and NE602.
Some friends in Italy had problems with K2 (and also
K1) on 40meters during
Bill,
Gian might be suggesting the use of H-mode mixers to replace the TUF-1 mixer
and NE602 product detector, but I have not asked him. The H-mode mixer has a
much higher 3rd Order Intercept than either the TUF-1 or NE602, but I would
have thought that the very good IMD performance of the
The IMD contributed by inductor cores used in the front-end selective
circuits is often not taken into account either, or for that matter any core
within the signal path. They can bite.
73,
Geoff
GM4ESD
Larry Phipps wrote:
This is a subject which seems to be gaining in importance as
Keep up the good work Bill!! May I second you request for comprehensive IMD
/ BDR test results. Crystal filters, particularly ladders, do have a habit
of coming back to bite unless their linearity, or lack of, is taken into
account while setting Gain Distribution et al during the design
With respect Larry I must disagree about the term roofing filter being
misleading. I completely agree that a narrow filter at the first IF is
desireable if not essential, and it could be identified as a roofing filter
in some instances - see below. This approach has been the norm in the design
Just cannot resist saying this Jack, the term roofing filter has certainly
been around for a long time - close to 50 years I believe, possibly longer.
I think that I first ran across the term being used to identify the first IF
filter in an Independent Sideband Receiver which the company for
I do not know where or when the term roofing filter first appeared, when I
first came across it in the late 1950s I was working in Canada. I suspect
that the term originated in N.America, most probably in connection with the
type of equipment which I mentioned, most of which was purchased by
Congratulations to all concerned for adding the K3 to the Elecraft stable.
Now I know what Wayne has been up to at 4 am! Looking forward to seeing the
numbers.
73,
Geoff
GM4ESD
John, KI6WX wrote:
The phase noise of the K3 is significantly less than the K2. One of our
main design goals was
Al,
I cannot comment offhand about any low cost commercial signal signal
generator that would suit your requirements, but if you are prepared to
homebrew there are many low cost options. If you did
homebrew and if you needed to know the output level from the generator when
using it, you would
On Saturday, April 21, 2007 at 10:13 AM, John GM4SLV wrote:
Proper N/BNC/TNC/C types, with pressure sleave and top hat ferrule for
under the braid are a joy to fit, requiring a knife, a pair of small
sidecutters, a _small_ soldering iron for the centre pin only and a
couple of small spanners to
On Saturday, April 21, 2007 at 6:01 PM, Mark NK8Q wrote:
snip
It is a very comfortable heaset and I like the ability to switch the phase
which I do several times during a contest which seems to reduce the amount
of fatigue compared to using my hi-fi stereo headphones.
I did change R14 from 1k
George,
If using separate antennas and to protect the front end of your K2's
receiver from RF generated by your K2/100 radiated by its antenna, you might
want to consider adding an external relay at the K2's antenna input
controlled by the EXT AMP KEY line of the K2/100. Although I have not
Wayne,
Thank you for your comments, all understood. I know about 4 am sessions,
been there g. Due to time restraints I have yet to examine in detail the
cause(s) of my K2's PLL (i.e. the Reference plus VCO) behaviour in the
presence of strong incoming signals, but from spectral analysis it
Good idea. As I understand it 'Clicks' = clicks heard every 5 kHz or
thereabouts even if the antenna is discoinnected, generated inside the K2.
'Clunks' = strange behaviour noticed or sounds heard while tuning when
*very* strong signals are being received in or close to the band in use.
This might be a tough nut to crack in terms of the surgery required. From a
quick thus limited investigation into this clunk problem in my K2 I am
reasonably certain that the lack of shielding to protect the VCO and
Reference, together with the lack of suitable interface filtering , is
The plastic versions which have a small blade poking out at one end and
recessed at the other are also useful for tweaking circuits working at HF
and low - mid VHF, ceramic better for higher frequencies such as 900 MHz
that you mention. The recessed blade makes getting proper alignment dead
Please don't misunderstand me, I like to use my ceramic tools as well.
73, Geoff
GM4ESD
- Original Message -
From: Ron D'Eau Claire [EMAIL PROTECTED]
Quite right, Geoff, when they fit!
I've found that is often not the case, especially in situations like the KX1
where the alignment
Hi Tom,
Have you found this coax to be 'critter eat proof' or did you put it into
some type of pipe before burying?
73.
Geoff
GM4ESD
- Original Message -
From: Tom Hammond [EMAIL PROTECTED]
To: J S [EMAIL PROTECTED]; elecraft@mailman.qth.net
Sent: Wednesday, March 21, 2007 11:43 PM
John,
Would external coaxial notching filters be practical for you? Another
thought (perhaps easier to implement) is an added small relay in each
transverter to RF ground the PHEMT's gate (or antenna connection) in the
unselected transverters. This would avoid the increase in noise figures
Hi Brett,
My personal preference when looking at the response of any filter is to use
a RF Spectrum Analyzer and a tracking signal generator. When it comes to
looking at the response of IF filters already built into a receiver the
tracking generator can work at the antenna frequency rather
Jack,
Thank you, I should have clarified this point. As I do not own a tracking
generator with built-in programmable offset, when looking at a filter when
there is a receiver signal mixer between the generator and the spectrum
analyzer I use the outboard mixer plus generator approach, with the
Ran my K2 barefoot on SSB and CW for about a year before getting around to
building the KPA100 amplifier, was having too much fun jousting with the big
boys over 'Outside of Europe' DX on 40m. K2 earned its keep on SSB and the
old story is true, it's the antenna's performance that counts.
73,
Dave G3YMC wrote:
I would also make a plug for a noise bridge. I built the one by KI6WX
which appeared in QST in August 1989 (available to download from the
ARRL site). If you have a suitable portable rig to couple to it does
most of what the fancy analysers can do at a fraction of the cost.
Hi Tom,
I bought a MFJ-259B a few years back and had to send it back after a few
weeks because of a bandswitch problem. The repaired analyzer's bandswitch
worked properly until a few months ago and had to be replaced. I never did
like the way in which the unit I have tunes, too much
40m conditions were not good here during the weekend except for European
QSOs and only two EQP callers heard briefly on 40m from the States, none
from Europe. A fair number of Stateside stations heard working the OK QP on
40m but only out to Arizona / Texas, nothing from the West Coast on
Perhaps something like the business end of an Evasive Noise Blanker? Jack's
PAN box would be a great addition for hunting the rubbish.
73,
Geoff
GM4ESD
- Original Message -
From: Bill NY9H [EMAIL PROTECTED]
To: Tom Hammond [EMAIL PROTECTED]; elecraft@mailman.qth.net
Sent: Monday,
Understood. I had been pondering a trigger derived from the noise receiver's
output pulses but with memory and variable delay added to freeze the
display, and allow one or several output noise pulses to be displayed.
Jack Smith wrote:
Actually, a swept spectrum analyzer is a very difficult
Test, please ignore.
GM4ESD
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Help:
Don, W3FPR wrote:
Remember that Heil has a wide variety of mics, just saying that you are
using a Heil mic is not sufficient information, one must specify WHICH
Heil
mics - they are not created equal.
-
Absolutely, and
Kevin KD5ONS wrote:
We may even get a check in from Rupert once Geoff teaches his favorite
pheasant how to peck out his callsign ;)
-
At 02:00Z this morning no signals were heard from the 40m ECN (tried 7043
ish up).
Dave,
My K2 also produces clicks on 40m which disappear if the antenna is
disconnected or turned away from strong BC stations above 7100 kHz. Running
CAL PLL has not cured the problem, and I have since found the same problem
on 15m. It might exist on other bands but I have not had the time to
Many thanks for the lead. Strangely the frequency separation between
adjacent clicks seems to be related to the number, separation and strengths
of strong received signals. Also on occasion when tuning through a 40m BC
station whose received carrier level is in the region of -10dbm, the
Jerry,
I could be wrong but I think Dohn's problem is due to a faulty switch in the
headphone jack which if stuck 'open' prevents audio getting to the speaker
circuits.
73
Geoff
GM4ESD
- Original Message -
From: Jeremiah McCarthy [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Dohn,
It does sound as though your problem is caused by a failure of the switch
which is part of the headphone jack. If the switch has failed and stays
'open' you could still get audio out of the headphone jack, but when
removing the headphone plug the audio will not be switched through to the
of drilling a hole
and adding wiring.
73,
Geoff
GM4ESD
- Original Message -
From: Brent Sutphin [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]; Dohn
[EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Sunday, February 11, 2007 12:18 AM
Subject
Morning Dale,
Passband Tuning can be incorporated into a single conversion receiver which
uses a product detector. The method used in most commercial receivers for
amateur use (putting aside DSP) is to have two IF filters in cascade along with
mixers. By varying the injection frequencies to
Nothing ventured nothing gained Nick, give it a shot!!
73,
Geoff
GM4ESD
- Original Message -
From: Nick Henwood [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Friday, February 09, 2007 6:07 PM
Subject: [Elecraft] Coil winding novice
I am just starting on my K2 and feeling
David Wilburn wrote:
In the article from the contester on the Elecraft site, N6 something, he
setup the SSB filters to act a bit like an IF shift. One filter to the
left, one to the right, and one center. Thought that was interesting.
Bob,
With due respect to Ron, IF Shift is very easy to design into a single
conversion receiver with a selective IF filter *provided* that the IF to
Audio detector is some form of mixer with BFO injection, such as a product
detector. It would probably be difficult to implement in the K2 not
Dave and Jeff,
Dave you are right in saying that that both IF Shift and RIT (or even the
main tuning knob) can be used to move an interfering signal out of the IF
passband. The advantage of IF Shift is that the 'beat note' from / of the
signal you want does not change as you move the
Kevin KD5ONS wrote:
Subject: [Elecraft] Elecraft CW Net Report for February 4th 5th, 2007
However, some of the new procedure worked. Hail signs made it
easy to copy folks first time (if the QSB did not eat you up first). But
calling by the numbers needs a little revision. I think I will
Hi Tom,
Thanks, I was fishing for a clear channel for us poor souls out in the cold,
honest g
73
Geoff
GM4ESD
On Tuesday, February 06 at 2007 5:18 PM, Tom Hammond wrote:
Hi Geoff:
Of course, DX is welcome to QNI ANY TIME!!!
Cheers,
Tom
At 08:27 AM 2/6/2007, Geoffrey Mackenzie-Kennedy
Mike KK5F wrote:
The AD9834 DDS chip in the KX1 is clocked at its maximum rate of 50 MHz.
The highest relatively clean frequency that can be generated from a DDS is
about one-third of its clock rate (about 16 MHz). Thus, the KX1 design
can NOT be adapted to cover ham bands above 20 meters.
Don,
I think that for use in a kit it would probably have to be supplied as part
of a factory assembled 'module' if the KX1's firmware could be changed. It
is packaged in a Thin Plastic Quad (SV-48) with 48 legs / leads which
require careful soldering and the chip needs some form of heat
Test, please ignore.
Geoff
GM4ESD
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Tom,
My KPA100 fan's noise has never been a problem even during contests, the fan
is *very* quiet.
73,
Geoff
GM4ESD
- Original Message -
From: Tom Zeltwanger [EMAIL PROTECTED]
Don,
Thanks for the intelligent response. I heard a lot of complaining about
the
nooise, but little
Mike VP8NO wrote:
Noisy, yes, distracting, yes, however, when the heatsink cools to the
threshold temp mine shuts off as described in the manual. External fans
have been discussed at length for extended operation with the upside that
the noisy little - your word(s) - doesn't even come on.
Dennis,
As Mark NK8Q has already mentioned a 1N4148 obtained from any source is
suitable. What surprises me is that D18 got fried in the first place if
everything else in the circuit is working properly. It might be wise to buy
some spare diodes in case the fault raises its ugly head again
Self inflicted torture?
Geoff
GM4ESD
- Original Message -
From: [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Friday, January 19, 2007 12:45 PM
Subject: Re: Modular construction (was RE: [Elecraft] K2
David,
If you ever get the opportunity try out a receiver which uses G3SBI's
H-mode mixer up front followed by a +40dbm IIP3 IF / filter strip, same
principle but improved 'numbers' with the linearity of tuned circuits and
IF filters now becoming the limiting factors in receiver IMD
Both the original and replacement headphone jacks of my K2 failed
internally, I am reasonably certain that the cause was external.
73,
Geoff
GM4ESD
- Original Message -
From: Tom Zeltwanger [EMAIL PROTECTED]
To: Jack Smith [EMAIL PROTECTED]
Cc: Elecraft Discussion List
I agree with David and use the same method to avoid instant or delayed
stress failure.
73,
Geoff
GM4ESD
- Original Message -
From: David Cutter [EMAIL PROTECTED]
To: Ron D'Eau Claire [EMAIL PROTECTED]; [EMAIL PROTECTED];
elecraft@mailman.qth.net
Sent: Saturday, January 13, 2007 7:29
Kirk,
Sounds as though the internal switch in your headphone jack has failed, and
the only practical fix I believe is to replace it. Since 2003 the switch in
the original headphone jack and its replacement in my K2 have failed, and I
now use a robust headphone jack mounted on the rear panel.
to P5.
I hope that this is useful.
73,
Geoff
GM4ESD
- Original Message -
From: David Wilburn [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
Cc: Kirk Brown [EMAIL PROTECTED]; Elecraft Discussion List
elecraft@mailman.qth.net
Sent: Saturday, January 13, 2007 1:39 PM
Typing error, the name of the company is Schurter www.schurter.com not
Schuter. My apology.
73,
Geoff
GM4ESD
- Original Message -
From: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
To: David Wilburn [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net
Sent
Ron AC7AC wrote:
Going waay back to when I was first building receivers, that RF gain
actually controlled the gain of the RF amplifier (preamplifier in modern
jargon) at the input to the receiver as well as the gain of the intermediate
frequency (i.f.) amplifiers ahead of the detector.
Ron AC7AC wrote:
I believe that's why the K2 uses a fixed-gain wide-dynamic range I.F.
preamplifier (Q22) ahead of the I.F. filter, and puts the variable gain
MC1350 (U12) after the filter where it's reasonably well protected from
off-frequency signals.
A pair of cross coupled NAND gates as a 'switch debouncer' should be
useful?
Geoff
GM4ESD
- Original Message -
From: Don Wilhelm [EMAIL PROTECTED]
To: [EMAIL PROTECTED]; elecraft@mailman.qth.net
Sent: Thursday, January 04, 2007 2:54 PM
Subject: RE: [Elecraft] something is bugging me,
Mike,
If you have the time to do it, I believe that it is well worthwhile arming
yourself with test equipment to do the job yourself. Although this sounds
like a tall order, most of the test and calibration equipment required to
check the K2 can be in fact be homebrewed, which obviously takes
Season Greetings and a very Happy New Year to everybody.
'S mor mo sholas bhi 'gad thaladh! (Ancient Scots Erse still used).
73,
Geoff
GM4ESD
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FWIW I use very thin domestic sewing needles to clear holes, the melted
solder does not stick to the needle. The main problem is in 'borrowing'
them.
My apology if this has already been suggested, we have many visitors staying
making it difficult for me to keep up with the mail.
73,
Geoff
Bill W5WVO [EMAIL PROTECTED] wrote:
I've read in a number of places over the years that mid-latitude
sporadic-E propagation does seem to be inhibited by large-scale
geomagnetic disturbance, just as HF propagation is -- albeit perhaps by a
different mechanism. If the mechanism is indeed
Hi Julius,
If the birdie at 28.019/20 MHz changes frequency when you change the
transmitter power demand from 10w to 10w, then the KPA100's HV Bias
oscillator is involved. Vic, K2VCO, and I had an off list discussion some
time ago about birdies including this one, and though Vic found the
Hello Robin,
My K2 receiver behaves in the same way, and what we are hearing between
14358 and 14363 kHz is one of the many K2 receiver's internal spurious
signals or 'internal spurii', also called birdies.
In genral these internal spurii are created by one or more of the K2's
oscillators
Deni,
My suggestion is that you use a resistor and not a choke. A choke at some
frequencies will become a series resonant L-C 'tuned' circuit, and it is
quite possible that the choke will resonate in or close to one of the bands
that you use. If that is the case you will loose transmitter
Hi Fred,
This is strictly 'Top of head' thinking. Space and control might be a
problem if you wanted to use both SSB and FM, but it might be possible if a
'FM' board (KFM2 ?) could use the space assigned to the KSB2 and SSB not
used. For transmit the necessary RF input / output and audio input
David G3UNA wrote:
Consult the fan design and see how its rating varies with pressure on one
side or the other. The air flow rate drops dramatically from its headline
advertised value as soon as it encounters any back pressure in front of it
and with restriction on the inlet side.
Indeed, turbulence can reduce flow. I must confess that I have no experience
with using a 'computer' type of fan to cool rigs.
73,
Geoff
GM4ESD
- Original Message -
From: David Cutter [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]; Elecraft
Discussion List
Van,
The Heil HC-5 and HC-4 mic elements do produce less output than many other
types of mic element, and you will find a number of Posts to the List
discussing this issue. Unless these mic elements are quite close to one's
mouth it does seem that a preamp is required with the K2. I use a
On Saturday, December 02, 2006 2:02 PM, [EMAIL PROTECTED] wrote:
If daylight noise is a factor, shouldn't you be having more of it than
hams
in EU at that time?
--
Of course noise takes all forms. Perhaps the noise is manmade electrical
noise that disappears/decreases late at night in
Jeff, as Kevin says 'you will find odd occurrences', and so called 'One Way
skip' does occur probably more often than people used to believe. There are
several explanations as to how this could take place which are too lengthy
to discuss on the Reflector, but one thing is for certain which is
Tom,
Have you noticed any change in the direction of path skew during the 45
minutes around your sunset, or is it always a 'Great Circle path'?
73,
Geoff
GM4ESD
- Original Message -
From: Tom Althoff [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Friday, December 01, 2006
Sorry about bandwidth, my post got lost.
73, Geoff
GM4ESD
- Original Message -
From: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
To: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Friday, December 01, 2006 12:46 PM
Subject: Re: [Elecraft] One-Way Propagation?
Jeff
Hakan,
You could try
Amidon Associates, INC.
240 Briggs Avenue,
Costa Mesa,
California 92626,
U.S.A.
[EMAIL PROTECTED] Tel + (714) 850 - 4660 FAX +
(714) 850 - 1163
I have bought a fair amount from them and delivery to Scotland or Luxembourg
has always been quick.
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