-Original Message-
What would happen if you connected the K1 up to say 16 vdc?
--
Ron,
OK, I'll go out on a limb here and say that probably nothing would happen if
the K1 were accidently connected to 16 volts. 20 volts create a problem but
I don't believe 16
Keith,
I measured the same thing on my KPA100 which I finished two weeks ago. It
works fine.
73,
Jim, K4ZMV
- Original Message -
From: Darwin, Keith [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Saturday, December 02, 2006 8:21 AM
Subject: [Elecraft] KPA100 - Q2
Kieth,
Since the base circuit for Q1 and Q2 is quite symmetrical, there is no
reason to have a different resistance reading on one as opposed to the
other. Neither Q1 nor Q2 should conduct with a resistance check, you should
be measuring the resistance of the other circuit elements and not the
I was reading the ARRL's Wire Antenna Classics and noticed an interesting
antenna (not that all of them aren't interesting hi hi). This was an
article by G0FAH called Four Bands, Off Center (p 1-13, also from QST, Feb
1996).
It is a 69-foot antenna with the feedpoint 23 feet from one side
In a message dated 12/1/06 7:23:14 AM Eastern Standard Time,
[EMAIL PROTECTED] writes:
Consistantly over the past 40 years I reaffirm on a daily basis that, at
least on 40M, as the sun lowers in the west I can hear European stations
about 45 minutes to an hour before they can hear me.
Hi Don,
The Li-Poly battery I have when fully charged is 16.63 VDC.
It will discharge as I am using it. I tried a 13.0 VDC zener diode but with
the protective circuitry on the battery it will shut down the battery.
I am going to experiment with a resistor in line to lower the voltage.
72
Check the errata sheet.
73,
Ken K3IU
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Darwin, Keith
Sent: Saturday, December 02, 2006 8:21 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] KPA100 - Q2 resistance check error - Problem?
I'm building a
Your point about 40m in Europe is well taken. I'll operate my KX1 around
7.030mhz tonight for the Polar Bear Moonlight Madness Event or PBMME.
I'll also operate on 30m around 10.106mhz and on 20m around 14.060mhz.
Keep an ear out for me over there in Europe! We do have one PB over in
England now.
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
What would happen if you connected the K1 up to say 16 vdc?
As far as I can tell it would work just fine.
I went through the schematics and found all of the components (I hope)
that use the unregulated input voltage and researched them on the net.
The results are:
Part
I think he meant simple diodes rated to handle the power you will use. Each
biode should have a voltage drop of 0.6V, so 2 would total 1.2V drop and I
believe that would be current independent. Placed in series the battery shuld
just see it as part of the load and not be concerned.
David, k3tue
Hello Bears and all,
If you work me tonight, please give me time to take off my gloves to
answer you. It's sunny now, but it will be cold and very windy up on the
mountain tonight at Pulpit Rock on the AT. I'm all packed up and ready
to go to lunch with Alpha Bear Ron, WB3AAL. From there we'll
You also have to consider the power dissipation of the regulators. This
will vary with the heat sink if any o each of them.
You can connect diodes in series with the power input. The voltage drop
will e the junction voltage plus the the IR drop due to the current. You
can find out the total
Much thanks to you guys for the answer. I can now proceed with confidence.
73!
- Keith N1AS -
From: Ron D'Eau Claire [mailto:[EMAIL PROTECTED]
Sent: Sat 12/2/2006 11:50 AM
To: [EMAIL PROTECTED]; Darwin, Keith; elecraft@mailman.qth.net
Subject: RE: [Elecraft]
John,
I put up one of these for my father N5LK, up 25' in the center and 30'
on one end. I dint use the specified length of ladder line, just 450
ohm window line of a convenient length. His K1 tuned it a little
roughly on 17m but it works FB there anyway. If I had had more time I
would
Steve,
Verify that the t-r menu is set to 8r hold. To check the setting, tap MENU
and locate t-r by turning the
VFO knob or pressing the BAND+ or BAND- buttons. Hold MENU to enable the t-r
function, then tap
DISPLAY to toggle between 8r normal and 8r hold. Be sure 8r hold is
selected, then tap
Hi Gang
I just came back from the local electronics superstore with a USB to 2 port
serial converter made by SIIG. My aim was to get rid of the usb to serial
converter pigtails cluttering up the place. The new usb-to-serial converter
won't work with the K2. It works fine with my FT-990.
[EMAIL PROTECTED] wrote:
Modern DF arrays can fix a position from a single location. Modern
DF arrays measure the phase differences very accurately and can use
the phase difference to obtain directivity and azimuth.
One of the nice things about email reflectors like this one is that you
can
In a message dated 12/2/06 8:58:34 AM Eastern Standard Time,
[EMAIL PROTECTED] writes:
a 69-foot antenna with the feedpoint 23 feet from one side and 46 feet
from the other. From the antenna to the balun is either 55 or 111 feet of
450-ohm line, or, 50 or 110 feet of 300-ohm line. From
Fred Jensen wrote:
How does one obtain a complete set of coordinates for the origin of a
received signal using only one passive receiving site (i.e. no
transponder for time delay measurement)? I understand bearing
(azimuth) from the rx site ... how does one obtain distance?
I would suppose
Hey
When calibrating the 4 mhz oscillator on my K2 I get a frequency
reading of 12098.77 instead of the 12090 khz. This is with both the
internal frequency counter and a calibrated frequeny counter.
They both show the same frequency. Does this mean the frequency
is off too far and I need to start
Jim, N2EY wrote:
I'm highly skeptical of *any* simple wire antenna that claims multiband
performance without a tuner or tuner-like device.
And so am I. In this case it's rather like the trick of feeding a 40 meter
dipole on 15 meters where it's 3/2 waves long. The
Scott,
The manual says that the frequency should be 12090 +/- 30 kHz - that is a
range between 12060 and 12120 kHz - your 12098.77 does fit within that
range, so all is well at this point. The fact that your external counter
indicates the same frequency as the K2 internal counter says that your
This from career AF pilot friend ... with a touch of tongue-in-cheek
humor
73! Ken Kopp - K0PP
From: Harold E. Johnson
To: Ken Kopp
Sent: Sunday, December 03, 2006 12:22 AM
Subject: Re: TACAN
Is it true that 0 degrees in TACAN is east, rather than north? If so,
is there a simple
Not all USB convertors are equal. Over the HRD website you will see
litany's of problems regarding them along with a recommended list of
compliant convertors. Unfortunately it sounds like the SIIG is one of those
that don't do their job properly. The reason it works with the 990 is their
levels
This month's issue of Nuts and Volts has an article on a compass that
points East. Also has some simple DSP code for DTMF detection, good
reading if you want to learn how PSK programs works. The code is a free
download on http://nutsvolts.com. The compass you will have to buy.
73,
Good Evening,
Eighty meters is sounding good right now. I am sitting at my computer
listening to the radio and working through my notes for a comms class I am
to teach in a few weeks. I am also resting from the last coat of paint on
the walls and ceiling of my new work area. Yes, it
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