The math is already more complex than most folks realize. The output
of the diode detector is not RMS, but rather peak. So, you need to
multiply it by SQRT(2) to get the real voltage to work with. On top
of that, you should add in the diode drop, which is variable based on
the current going
Good Evening,
That was fun! It appears the bands are getting slightly better.
Either that or the heat has effected my hearing! During the first net I
was going a little dingy from the heat. Good thing they over designed the
heat sink on the K2/100 since mine was getting quite warm. I
Hi Don,
I recheck the manual of my ICOM IC7800. It said a transverter level of
-20dBm or 22mV.
Is -20dBm equivalent to 22mv? Or is there a mis-print in the ICOM Manual?
73
Johnny Siu VR2XMC
From: "Don Wilhelm" <[EMAIL PROTECTED]>
Reply-To: <[EMAIL PROTECTED]>
To: "johnny" <[EMAIL PROTEC
I'd do my troubleshooting with an ohmmeter FIRST. 73 de alex NS6Y
On Jul 23, 2006, at 4:58 PM, Rick Tavan N6XI wrote:
Hi, guys. I smoked my K1 by plugging in the wrong DC cable. It came
from a
35V supply instead of 12V. The radio worked for about 15 seconds,
then died
with an odor of bur
Mychael,
I do not have the Rev D documentation, but the KSB2 has changed very little.
I suggest that you just use the current instructions on the Elecraft website
to build your KSB2 - if you should encounter anything that just does not
seem to fit, then ask your questions here.
Be aware that ther
Fran,
First, you said 'tune the load' -- there should be no tuner of any kind on
the output of the K2 when measuring power into a 50 ohm dummy load. The
varaition of power within any band can and likely is) a result of an input
impedance varaition in the tuner. If you are using the KAT2, put it
Johnny,
Re-check that output level because it seems quite low. 22mV into a 50 ohm
load is only 9.7 uW power. I would expect something more on the order of 1
mW and upward.
73,
Don W3FPR
> -Original Message-
> The transverter output level of my IC7800 is 22mv. Could any of
> you advi
Assuming you meant 22 mW, you should indeed use the 251 mW setting of
the jumpers. The 1 mW setting is for 1 mW maximim. You'll be able to
use the input level control to tweak the transverter to full output
for your drive level.
de w1rt/john
On 7/23/06, johnny <[EMAIL PROTECTED]> wrote:
Hi Grou
Hi, guys. I smoked my K1 by plugging in the wrong DC cable. It came from a
35V supply instead of 12V. The radio worked for about 15 seconds, then died
with an odor of burning components; no visible smoke. Realizing what I had
done, I connected it to 12V to troubleshoot. I see only 1Hz pops of (low
Hi Group,
The transverter output level of my IC7800 is 22mv. Could any of you advise
which input level I should select for the XV144? 1 mW or 251 mW?
TNX & 73
Johnny Siu VR2XMC
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You must be a
Fran, it's almost impossible to get a decent power reading by measuring the
RF voltage at the load unless the load has a very, very low SWR. No common
SWR meter is capable of showing when your load is well enough matched to
give you any significant accuracy. That is, a small mismatch that won't
har
First, I'd like to thank all of you who participate every month. We had
35 scores submitted this month, down a couple from the past few. I'm
sure that folks are on summer vacation; and not everyone is insane as me
and takes an HF rig and antenna long on their travels!
This month, we have a t
Resending this as I have not received any replies yet. Could anyone possibly
help me out?
Thanks!
Darrell
-- Forwarded Message --
Subject: KAT100-1 Measurements?
Date: July 6, 2006 03:52 pm
From: Darrell Bellerive <[EMAIL PROTECTED]>
To: elecraft@mailman.qth.net
Would someon
It means you got to play with the GOOD stuff! 73 de Alex NS6Y.
On Jul 23, 2006, at 6:55 AM, Vin Cortina wrote:
I was doing field service on what we called Test and Measurement
equipment, and I was specializing in microwave network analysis.
Regards,
Vin KR2F
K1-4 s/n:1977
KX1 s/n:1476
_
I created what I thought was a reliable method of measuring the power out of
my K2 and am puzzled by the results. What I did was:
1. Built the RF probe from the K2 manual onto a 50 ohm dummy load.
2. Attach that to one of the antenna connections on my KAT2.
3. Tune the load on all bands
It was a climate controlled room in Bethpage, Long Island, was in Plant 5,
and was called "the clean room"...If he actually took you right into the
room (not outside looking through a window), then you had to put on a
smock, booties, and hat and enter through an air lock...You should feel
privileg
All the items have been sold.
Thank you for the bandwidth
73 Jim
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Subscriber Info (Addr. Change, sub, unsub etc.):
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Closing out. Give me your best offer. I may take it.
EC2 enclosure
KAT100 panels for EC2
KAT100 automatic antenna tuner
KIO2 serial interface for the K2
Contact me off list please.
Jim, W4ATK
[EMAIL PROTECTED]
___
El
Ragchewed with John 5Z4JX (N6JW) who is using a K2/100, on July 20 15m SSB.
73,
Geoff
GM4ESD
Gil NN4CW wrote:
Elecraft products seem to have a worldwide following.
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Hello,
I had a Great short day out on the Appalachian Trail.
Wx was overcast and the temp. was around 77' F.
I was located north of Strausstown, PA about a mile south of rte. 183 at the
pond.
I called CQ on 30 meters from 14:00 UTC until 14:20 UTC, no one came back to
my CQ so I went to 20
Just finished my second K2 #5653
John K5XTX
_
Dont just search. Find. Check out the new MSN Search!
http://search.msn.click-url.com/go/onm00200636ave/direct/01/
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Hi, folks,
Well, I've let my SSB kit for my K2 sit long enough. However, I had to look
all over for it and when I found it, I couldn't find the instructions.
Went to the Elecraft website to download and found only Rev E. instructions.
Couple of questions:
1) does anyone have the Rev D. version
Ron D'Eau Claire wrote:
I make sure the grounds for all the equipment on my bench are tied together.
That also means that they are tied to the mains ground, since the 'scope,
soldering station, bench power supply and a few other items are all plugged
into mains outlets.
My wrist strap connects
Hi folks,
What has been the observed consistency of output levels of the 3
frequencies of the XG2 Receiver Test Oscillator?
80mtr vs 40 mtr vs 20mtr xtals. Specifically, is one xtal generally
producing slightly more/less output than the others? Still within the
Output Accuracy +/-2dB spec of co
I make sure the grounds for all the equipment on my bench are tied together.
That also means that they are tied to the mains ground, since the 'scope,
soldering station, bench power supply and a few other items are all plugged
into mains outlets.
My wrist strap connects to the same ground, throug
I recently completed the subject KX1. The process was typically Elecraft;
all parts were present, instructions clear and everything worked.
One question for the group regarding power output. I get 2.9 watts on 20 and
3.4 watts on 40 with a supply voltage of 13.5. Are these powers low enough
to wa
Speaking of Grumman and the LM. I know this is off topic, but I just had to
tell you all back in the mid to late 80's in my early years at H.P., I was
doing field service on what we called Test and Measurement equipment, and I
was specializing in microwave network analysis. Grumman was one of
My base station consists primarily of a K2 / KPA100 / KAT100 with an
MP-2 SuperAntenna hung out of my third floor apartment window. Not
exactly the setup you are inquiring about, but similar enough to merit
comparison.
I have no problems with this setup. I generally remotely move the
coil/motor
Gregory Beat wrote:
>Grumman used the TCP irons for the Lunar LM construction in 1960s; Collins
for the "S" line production and rework stations in 1960s and 1970s and NASA
in 2002 used a Weller WTCPT pencil (tied to station's 24 VAC bus) on ISS
Alpha for soldering tests in microgravity.<
A ver
Hello,
Look for me between 14:00 and 16:00 UTC on 40, 30 or 20 meters.
I will be out on the Appalachian Trail to make a few QSO.
Also look for me next Sunday in the Flight of the Bumblebees Sprint out on
the AT, BB #17.
72 and Thanks,
Ron Polityka
WB3AAL
www.wb3aal.com
www.n3epa.org/
K1 - S
Hello Dave and all,
I have and old mat with a wrist strap attachment, meant to be used
with a keyboard. I don't like wrist straps, so I use a piece of 1"
square pcb board and tuck it next to my skin, under my belt. This
frees up my hand.
This square of pcb board is grounded through it's coily
Kirk
I use a low cost earth mat and wrist strap. In order to connect them
together (and to earth) I have an aluminium bar alongside the work
bench, this in turn connects via a length of "hook up" wire and
crocodile clip to the station ground. At the start of each session I
check there is continuit
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