Martin,
> As previously stated a halfwave end fed wire represents a
> very high impedance which is outside of the matching range of the T1.
I agree, the impedance hight depends on the capacitive load of the wire ends
against ground.
> I have found that a halfwave long wire works as long as it is
Hi Group,
I'm presently running a K2 as an IF ( 28 Mhz ) and two Elecraft
TRansverters...the XV50 and the XV144 ( and hopefuly the XV432 soon ??? ).
I have the System hooked up using the Daisy Chain Control cable as per
the instructions in the XV Transverter Manual. I use a Station Sequencer
Hi
During last night trying to finish op the asssembly of the K60XV i
faced MHz) the S the transverter band n i was looking
for bad soldering components. I did hit D1, the pind diode that ofca
have ofcause placed an o
In a message dated 1/4/06 8:31:49 PM Eastern Standard Time, [EMAIL PROTECTED]
writes:
> Ain't it sumpin' ... the moderators having a sense of humor and allowing us
> to
> express our own mistakes.
>
And to learn from the mistakes of others.
73 de Jim, N2EY
__
Andy ...
I had some very nice nickel plating done a few years ago on my custom
bicycle frame and was going to give you a link to the company in California
(CycleArt) where I had it done. But I checked on the web and it appears
that they are either out of business or headed in that direction. But
A repost for Fred, K6DGW.
Original Message
---
The definition of a "dumb thing" often changes over time. In Jr High
electric shop in '53, we were given our choice of two projects: An
electric motor that would run on a car battery, or a hot dog cooker
Glenn,
If your Pre-Amp relay and your linear will switch in less than 15 ms or
less, then you will not need the sequencer.
The way it works is like this - when you operate the K2 PTT, The K2 will
activate (ground) the transverter key-out and about 15 ms later RF will be
present on the antenna out
>Fred - KT5X wrote:
>OK, HOW I DID IT !!!
>First, I made a tool, a heat shield. I made this out of a piece of tin
from an
>Altoids box. I used a set of relay holes on the circuit board to mark ...
That was ingenious, Fred, you should have done a video.
Tom, AK2B
__
I've just started building K2#5290. Thought I would pass along a small
building tip.
The search function of the current Adobe PDF reader is quite handy for
finding things in the manual.
Example 1: Having just finished populating the caps on the Control
Board, I noticed the spot for C44 was
I remember the hot dog cooker from my JHS days, as well. Things were
different then! We had a rifle club with a shooting range in the
basement and I would bring my .22 to school on my bike--an activity
which would probably get you arrested today.
I built my first transmitter in 1952. One
Bill:
For what little help it may be, I have on my web site (www.n0ss.net)
searchable part location files for the K1 / K2 / KPA100 / KX1.
These are PARTS PLACEMENT (only) files, so you don't have to step
thru other textual references to the component if you're only looking
for where the heck
I've owned and written about motorcycles built all over the world. The best
plating I have every seen was always on British motorcycles. Japanese
motorcycle plating looks like it's done on plastic. American motorcycle
plating LOOKS like plastic. German plating is technically very good but
unremarka
Hi, Peter.
Please excuse my ignorance I'm fairly new
to amateur radio ;)
But I have a question:
> The only reason that the "use the nearby bushes"
> construct now can be tuned by the T1 is that the
> impedance goes low because a part of the antenna is
> lying "on the floor" now, giving high capa
Andy,
I had good results with Graves Plating Co. in Florence, Alabama. They
do a lot of restoration work.
http://www.gravesplating.com/
You might also consider asking Vibroplex who they use. They are still
in business in Mobile, Alabama.
http://www.vibroplex.com/
Bob
WB4TGG
Andy GM0NWI wr
Martin wrote:
"...another antenna I have used is a 66ft length
of wire at 15feet, fed in the centre with 300 ohm
twinlead.
In this case, the driven half of the wire is still
33ft long - but I get really low SWR om 20m and have
worked DX with it,
So why does that work? Is the feedline doing
some
Indeed. The signal to noise ratio on this reflector is getting beyond a
joke & it must really irritate people who have dialup accounts. What
makes it worse is that all this OT drivel ends up in the searchable
archives.
73, Dave G3VGR
K2 #4783
n3drk wrote:
I am surprised the moderators have no
The signal to noise ratio
Good point, Dave.
End of thread, please!
Wayne
N6KR
---
http://www.elecraft.com
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On Jan 5, 2006, at 10:43 AM, Martin Gillen wrote:
Hi, Peter.
Please excuse my ignorance I'm fairly new
to amateur radio ;)
But I have a question:
The only reason that the "use the nearby bushes"
construct now can be tuned by the T1 is that the
impedance goes low because a part of the antenn
Michael,
You are correct - the PIN doides D1 and D2 form the T/R switch for the low
power output.
If you do not use the low power output, you can operate the K2 from the
normal BNC antenna jack as usual without that diode installed.
The number of bars on the K2 LED during transmit indicate the a
Hello all!
As you might know, there will be a pack of polar bears in a den at the
Mohican Outdoor Center from January 13 -15. I will be there too and I'll
also backpack up the mountain to the ridge on the AT to operate
Saturday. Look for me on 40m and 20m cw near the qrp frequencies on
Saturday.
For all those that are interested in using and adjusting Speed Keys
for use on the ham bands, I just finished a Journal about Speed Keys.
With pictures and descriptions of Speed Keys as well as other
interesting info on Telegraph Keys. With a large section on how to
properly adjust a speed key.
[EMAIL PROTECTED] wrote:
For all those that are interested in using and adjusting Speed Keys
for use on the ham bands, I just finished a Journal about Speed Keys.
Very interesting, especially the part about having lots of tension on
the dot lever coil spring. I struggled to make clean dots fo
On Wed, 4 Jan 2006 17:03:40 -0800 (PST), "Jim F." <[EMAIL PROTECTED]>
wrote:
>five weeks allowance
You had an allowance?
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K2 SN 5295 arrived today and will enjoy its home in Colorado. Looking
forward to a prolonged and satisfying build experience. Thanks in advance
for all your help, if needed.
... Craig AC0DS
Craig D. Smith
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Does any one know the output of the MD2 mic in dB? It drives my
K2 just fine but am thinking of another mic setup.
Thank youGil K8EAG
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I'm not wellversed in the operation of email reflectors, so please
bear with me if the following isn't a practical idea.
I found the recent "stupid" thread to be entertaining and informative,
but must agree that it strayed way off the subject of Elecrafts.
Maybe there's a way to avoid clogging up
Gil,
The graph at http://www.elecraft.com/MD2/md2_micrphone.htm shows the MD2
output to be at -40 dBm over most of the spectrum.
73,
Don W3FPR
> -Original Message-
>
> Does any one know the output of the MD2 mic in dB? It drives my
> K2 just fine but am thinking of another mic se
Great stuff, Frank! Thanks...
My K2 has been keyed with either a Vibroplex standard or an E.F. Johnson
Speed-X bug for the past several years. The Speed-X I got in the 1950's when
I passed the 13 wpm code test for my General Class Ham license. The
Vibroplex was passed on to me by the widow of a g
~~
N2CQ QRP CALENDAR
Jan 4 to Feb 5, 2006
~~
40 METER FOXHUNT - Each Friday 0200z to 0329z
(Thurs 9 PM to 10:29 PM EST)
80 METER FOXHUNT - Each Wednesday 0200z to 0329z
Mick,
Alan Chester (G3CCB)(SK) proposed a solution for the high end impedance of a
1/2 wave antenna. Mr. Chester rationalized that there might be some
impedance-friendly length of wire usable for an end-fed antenna that didn't
present the tough-to-tune, high-impedance load on a select set of bands
Ron ZL1TW and I have been bemoaning the slow recovery time of the AGC that
we were experiencing with both of our K1's.
Ron's been doing some experimenting as have I using componants from out
junkboxes.
What we ended up with was changing C31 from a 2.2ufd cap to a 0.22ufd cap.
Ron added
Steve AA8AF wrote:
Alan Chester (G3CCB)(SK) proposed a solution for the high end impedance of a
1/2 wave antenna. Mr. Chester rationalized that there might be some
impedance-friendly length of wire usable for an end-fed antenna that didn't
present the tough-to-tune, high-impedance load on a selec
Rather than sacrifice the AGC control, I handled the on/off of the K1
backlight by adding an internal on/off switch. I used a very small
Elecraft DPDT switch left over from the K1 Upgrade Kit I installed
awhile back (I didn't need the ability to turn the tx mixer on during
receive, so the swit
Still running my K1 (#1423) on inefficient low
antennas.
I have some trees that will give me good height 50-60'
and orient the main lobe of a double extended zepp
(14MHz) toward Oregon, take notice ECN.
I have come across a device that will keep the antenna
at near DC ground at all times.
http://
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