Might work Kevin ! Overheard a W telling a DL on 3.8MHz ish that when he was
in the Caribbean he covered two coconut palm trunks with kitchen foil, and
used them as phased verticals. Not on April 1st.
73,
Geoff
GM4ESD
- Original Message -
From: Kevin Rock [EMAIL PROTECTED]
To: Elecraft
Hi Mike,
I have the same thing here even with a dummy load on the ANT 2 connection
(default in case anything goes ape). It is something that I would expect,
how much isolation depends on the type of relay used, the frequency, how
well the relay coil is by-passed , the crosstalk between external
W.A.S.E.L ?? Or is that sounding a bit alcoholic?
73,
Geoff
GM4ESD
- Original Message -
From: Larry Makoski W2LJ [EMAIL PROTECTED]
To: Elecraft@mailman.qth.net
Sent: Saturday, January 22, 2005 12:32 AM
Subject: [Elecraft] New Award ?
Looks like we're going to have to come up
Hi Adi,
You could be right. But keep smiling, K2/100 is in hospital here and
doctors are looking at Ostrich, C.Condor and GORILLAS. Patient doing well.
Your information very useful.
73,
GeoffGM4ESD
K2/100 3255
- Original Message -
From: S55M [EMAIL PROTECTED]
To:
Evening Sverre,
The 16.289 oscillator I mentioned last night is the source oscillatoir for
the KPA's high voltage supply. There is not a 16.289 MHz source in my K2,
and with the KPA100 uninstalled, K2 alone has the birdie at approx 28276 MHz
CW /USB which moves up to 28278.5 approx on LSB. Using
Good Evening Steve,
I cannot remember reading anything about the use of a noise generator for
tuning filters, but back in the early '50s we used to use a noise
generator plus spectrum analyser to align 30MHz IF strips used in radar
receivers. Also during the design of filters etc. We simply
Evening Sverre,
Agree with what you say, but I get a strong birdie at 28.276 without the
KPA100 on. This one I think is LO + BFO , that is 23.361 + 4.915 = 28.276,
nominal freqs. Being first order it is also strong. Other products + mLO +/-
nBFO also converge here, but are not a problem in my
look in
August 2004.
73, and thanks.
GeoffGM4ESD
- Original Message -
From: Sverre Holm [EMAIL PROTECTED]
To: 'Geoffrey Mackenzie-Kennedy' [EMAIL PROTECTED]
Cc: 'Elecraft Discussion List' elecraft@mailman.qth.net
Sent: Sunday, January 16, 2005 9:56 PM
Subject: RE: [Elecraft] Birdie
Hi Marinos,
Methinks that the Ostrich at 28.266 ( 28.276 in my K2/100 - and a BIG one)
could be one of the mixing products of the LO (PLL) and the BFO. Am thinking
about major surgery in an attempt to get rid of some or all of the many
internal spurii in K2, which can be a problem in single
Top of head thoughts,
Compulytic = Computer Grade Electrolytic ?
32D - sounds like a type reference ?
4500 - 150 DC = 4500 uF 150V DC ? Strange though as 4700 uF is the usual
value and 100V or 200V are the usual nearby voltage ratings.
7230L - maybe the part number ?
0180-1839 - maybe
Hello Everybody,
As I am leaving for Belgium soon and will be offline, may I wish you all a
VERY Happy Festive Season, and a VERY Happy New Year when it comes.
73,
GeoffGM4ESD.
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must
K2/100 don't like that !! PLEASE no more cops - OUT OUT UP UP - good grief.
73,
Geoff GM4ESD K2/100 (hurt)
- Original Message -
From: earl baillley [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Wednesday, December 08, 2004 6:43 AM
Subject: [Elecraft] RE: Elecraft Digest,
Henning,
ELFA (Sweden) carry size 1206 3900pF +/- 5% NPO 50V DC ceramic
capacitors. Big problem is that their catalogue lists price /100 min as
89.20 euros. Their Order telephone number is +46 8 580 941 30. Order
e-mail is [EMAIL PROTECTED] Web iswww.elfa.se
My catalogue is
Morning Merlin,
From an old guy (hmmmpf) who has messed around with RF circuits for ages,
for what they are worth a few comments. Your idea to keep RF away from where
it should'nt be is a basic rule in good RF design, and will always be I
would think. Some digital designs get hung up because this
Hi BrianLike having a real BFO (with a knob) - great gizmo for
digging out that WEAK DX from a massive pile of QRM. Life's not the same
without one !!
73, Geoff GM4ESD.
- Original Message -
From: Brian Mury [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent:
Why bother with any RST figures in contests or typical DX pileup exchanges
these days? Sad truth if NN is only report.
73, Geoff GM4ESD
- Original Message -
From: David A. Belsley [EMAIL PROTECTED]
To: R. Meilstrup [EMAIL PROTECTED]
Cc: elecraft@mailman.qth.net
Sent:
Good morning Kevin,
20 metres dead as a Dodo here 2300Z onwards with no recovery by
ECN time.Idiot 'alarm clock' pheasant was late, but I got on 7045 kHz around
0400Z hoping to find somebody still around. Nothing except a S5 RTTY and a
continuous pulsed signal both from the west, but
My two cents worth, I remember the long dah =0, A=1 and N=9 being used on
the ham bands sometimes, way back in the middle ages (1940s). But not long
ago I upset a guy on 40m by giving him a RST report of 57A, (A= auroral
tone). He thought I meant that his tone was sixty-cycle or less, very
rough
Congratulations Bob. Murphy struck here so could not get on much, but did
manage a JA on 40m around 1100Z Sunday - strange conditions. Oceania also
absent here, only KH6, VK and ZL on 40m. Fun to hear N.A. East Coast to West
Coast coming through on 40m at whatever time I could listen, even at
Jim,
From what I have read on the Elecraft reflector, people are saying that they
cannot talk up the K2 to full output with Heil mics. I have been using the
Heil Proset Plus headset / boom mic with the HC-4 and HC-5 elements with my
K2/100, and have no problem at all in getting full 100W out -
Top of the head thought, I wonder if it is only the late model K2s that have
to be talked up. If so, it might have something to do with manufacturing
tolerances of the audio ICs. Would be interesting to get a yes - no roll
call from all K2 SSB users that use Heil mics.
I also use a scope to look
Morning Nicolas,
I had exactly the same fault. Searched high and low in the UK and the rest
of Europe for a replacement with the switch but no luck. So I finally had to
order one from Elecraft. The cost of shipping was a heck of a lot more than
the cost of the headphone socket, and I wish now
Now that's a thought Ken, Elecraft amplifiers. Anyone listening in Aptos CA?
73, Geoff.GM4ESD
- Original Message -
From: Ken Beals [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Cc: [EMAIL PROTECTED]
Sent: Tuesday, November 23, 2004 1:57 AM
Subject: Re: [Elecraft] 04 SS Phone / K2
Brian, I am using the Heil Proset Plus, without any mods to the K2/100 audio
input circuit, and get the full 100 watts on all bands. Is your power supply
acting up by any chance?
73, Geoff GM4ESD
- Original Message -
From: Brian Mury [EMAIL PROTECTED]
To: Elecraft Reflector
On Sun, 2004-21-11 at 19:06 +, Geoffrey Mackenzie-Kennedy wrote:
Brian, I am using the Heil Proset Plus, without any mods to the K2/100
audio
input circuit, and get the full 100 watts on all bands. Is your power
supply
acting up by any chance?
Thanks for the suggestion. I think it's ok
it
together and have it stuffed into the mic body. It now works fine. Good
luck Gil K8EAG
On Sun, 21 Nov 2004 22:22:54 - Geoffrey Mackenzie-Kennedy
[EMAIL PROTECTED] writes:
Both HC-4 and HC-5, select with switch. Both OK for 100W, but I have
yet had
to use the squawky DX one
Maybe I've been lucky or Heil tweaked something, but I don't think so. I
agree with Don, have a good look around KSB2, also checking resistor values.
Incorrectly marked ones do appear sometimes.
Geoff.
- Original Message -
From: Brian Mury [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
leave those
sums for the lads at Elecraft !
Hope that answers your question, and have fun.
73, Geoff GM4ESD
- Original Message -
From: Mike, W8ENG [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net
Sent
Mike,
Just to let you know that I have received a very positive response from
Elecraft about the K2's AGC Threshold setting problem..
Your DMM appears to be fine, and I hope that the info I sent you solves your
problem. Would appreciate hearing when you have time.
73,
GeoffGM4ESD
Not impossible Jim for Rx - a good selection of adequate FM Receiver ICs
around. Tx more difficult as you don't want to increase the LO's phase
noise.for CW/SSB - but could be done without touching the VFO. But where do
you put it all without introducing problems?
73GeoffGM4ESD
Mike,
There is a design problem in this circuit, IMHO, which has to do with
tolerances, and I am having an off list discussion about it. Nothing
serious, and I am sure that it can be fixed easily. I'm letting you know so
that you don't damage anything by too much poking around in K2. The 3.78
Mike ,
Typing error in my post, last line. Low voltage should be 2.600 not
2.667 - same as you get. Sorry.
73,
Geoff GM4ESD
- Original Message -
From: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
To: Mike, W8ENG [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft
Agree that the 60db/6db shape factor is an essential indicator of a filter's
selectivity performance. But the filter's rsponse above the 6db points is
also very important if you want a good sounding SSB signal, or a Rx's SSB
filter that can really dig in a pile-up. If the filter's skirts come up
IF cousin, and can have very good
strong signal performance. HERESY !
I'll see you off list.
73,
Geoff GM4ESD.
- Original Message -
From: Guy Olinger, K2AV [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]; Elecraft
Discussion List elecraft@mailman.qth.net
Sent
Morning Deni,
The bandwidth of a filter (in whatever form) has always been taken to mean
the bandwidth between the upper and lower 3db points of the filter's
attenuation vs frequency response, the 0db point being at the frequency of
least attenuation in the pass band. One hopes that the passband
I AM OUT ! Gr
(Sorry Tom, he knows how to type - Geoff GM4ESD)
- Original Message -
From: Tom Arntzen [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Thursday, November 11, 2004 11:57 PM
Subject: Re: [Elecraft] Re: Is there a K3 coming - Not at this time.
Then I
Hi again Tom,
I use the Heil Proset Plus also with a K2/100 and have left R14 at 1K, no
other changes. My KSB2 was supplied with :
R4 56K ( had been 390K}
R7 33K ( 3.9K)
R9 10K ( 3.9K)
C38 47uF (had been
Great idea Vic ! Over here a 'well behaved' pile up is history, and HOPEFULS
and JAMMERS are the norm. Still think that a properly designed panadapter is
the best tool - but am I a dinosaur?
73, Geoff GM4ESD
- Original Message -
From: Vic Rosenthal [EMAIL PROTECTED]
To: Tsachy L [EMAIL
Julius,
Sorry it has been 30+ years since I had the beast, and gave it away when I
left VEland. Have you tried asking somebody in the test equipment department
of your local friendly communications / broadcast company? You might even
extract a copy of the 43's manual.
73,
Geoff GM4ESD
Hi Kevin,
Was in class at 0200Z but only heard the occasional burst at noise level
S1 on 7045 kHz using single halfwave vertical. Couple of Stateside (East
Coast) guys in QSO near 7040 kHz. Made a few calls on ECN frequency just in
case. Even the S.American ssb QRM was absent. Will keep trying
Hi Rich,
Have you tried disconnecting the antenna system and putting a 50 ohm dummy
load at the output of the Daiwa ? If the Daiwa is OK and the tuner's VSWR
bridge is OK both should give you almost the same readings. I say almost
because the additional connectors and line plus the Daiwa that the
Morning Dan,
Agree with all. My thinking was to remove the antenna system from the
equation so that the baseline could be checked out before dealing with any
antenna system induced problems. I know nothing about the Daiwa, but if it
is supplied with mains power any ground loop Power Supply -
Hi Tom,
Have been doing some idle thinking (global thinking if you don't mind) about
the installation of new bibs and bobs into the K2 - such as the zero beat
indicator. Seems to me that the beast is growing like topsy with a lot of
little pcbs and probably a lot of messy interconnections, and
Hi Martin,
A postscipt to our discussion. If you use that .075 inch dia Kevlar string
with black plastic dogbone insulators, for example to tether the ends of an
inverted V dipole, cover the Kevlar at the insulator with a bit of large OD
small ID non-metallic tough flexible tubing. Otherwise the
Hello Alan,
Carrying or using a slingshot is illegal anywhere here in Scotland. Use of
archery hardware has to be cleared by the police. The use of tennis balls is
not restricted in any way. Maybe your website will answer my questions ( I
shall be visiting) :
With a Pneumatic Tennis
Hi Phil,
Forgot to add that I use Flex Weave wire for both Horizontal and Vertical
antennas. Like Julius said it is super to work with and very strong.You can
tie knots in it. Although I am not too keen about using heavily insulated
wire, the insulation does protect the copper from birds' claws
Hi Phil,
Bad news. Very sorry indeed.
I agree with Ron about strain relief when using trees. A MUST in my opinion.
Here I have a rope catenary up about 80 feet and about 200ft long, one end
to a pine tree - the other to a hardwood. Both dance in the 100 mph winds we
get at times, nothing like
Greetings everyone,
Is there any way that more than nine frequencies can be stored for recall in
a K2 ? I have filled mine up with WWV (10MHz), DK0WCY, the IBP/NCDXF
frequencies and two 14 Mhz frequencies for 6m (14 MHz IF). It would great to
be able to store a few more so that I could hop about
Hi K2ers,
Has anyone got any comments to make about internally generated birdies in
the K2? I have only just had a look at what my K2 produces because during a
QSO with a JA on 40m Long Path a few mornings ago, who was playing chicken
at 7. plus gnat's eyebrow, I was getting constant QRM -
Hello everybody,
Kevin, KD5ONS , posted a note saying that I had copied K1EV during the 0200Z
40m ECN last Sunday / Monday. Yes I had under S9 PIGGISH propagation
conditions - also W4STK. What Kevin did NOT say , as I think that he is too
modest , was that he too was making it over here again -
Hi Stewart,
Have occasionally used VOX with my K2/100 ( 3255 ) for ragchewing and it
seems to be OK - but would like an Anti VOX in there. Normally use PTT
(Foot switch) in say a pile up. Just habit. Use Heil Pro-set Plus straight
in - AF pre-amp not required on any band.
Hope that this helps.
Hi Tom,
Have been in touch with Kevin ( KD5ONS ) , and it seems that the first ECN
signal that I heard last weekend on 7045 MHz was indeed from Kevin.
Strange thing was that you and Kevin were the same strength. give or take.
Guess Kevin got up to speed coming down the eastern side of the R.
on 7042ish,
and I think AL7N /0 is in CO. So conditions seemed to be reasonably good,
but not outstanding. My QRN level was about S1.
73 Geoff GM4ESD
- Original Message -
From: Kevin Rock [EMAIL PROTECTED]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
Sent: Monday, August 09, 2004 4
]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
Sent: Monday, August 09, 2004 6:37 AM
Subject: Re: 40m ECN
Hi Geoff:
Thought you might like to know that you are RST 459 to RST 259 through a
VERY loud LU SSB station, and through ER4DX a little bit up. The latter
has a lot of hardware in the sky
Hi Tom,
Thought you might like to know that you are RST 459 to RST 259 through a
VERY loud LU SSB station, and through ER4DX a little bit up. The latter has
a lot of hardware in the sky pointing at me at this time, + vy QRO. Am
listening to you on my homebrew Rx - oh you have just gone - because
Hello all,
Have noticed over the recent years that current baluns are used in places where
the load/source Z is not purely resistive (OK will allow a little reactance) ,
example - an incoming transmission line that looks like R +j (quite a lot) goes
to a balun then the to an ATU then to the
]
To: Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Friday, August 06, 2004 5:19 PM
Subject: Re: [Elecraft] Performance of baluns.
The current balun can be readily demonstrated to provide equal and
opposite
currents to highly unbalanced loads
-Kennedy GM4ESD [EMAIL PROTECTED]
Cc: Elecraft Discussion List elecraft@mailman.qth.net
Sent: Friday, August 06, 2004 5:28 PM
Subject: Re: [Elecraft] Performance of baluns.
On Fri, 6 Aug 2004 16:47:57 +0100, Geoffrey Mackenzie-Kennedy wrote:
Have noticed over the recent years that current baluns
Hi Bob,
Many thanks for comments - much appreciated. When I got my first licence in
1946, not in the UK, ATUs were usually big beasts with hefty plug-in coils,
widespaced air variables, swinging links and lots of big insulators. Usually
the ATU was at some distance from the Tx and its pi
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