This Wednesday evening (Thursday morning UTC time) the NAQCC will be
hosting a 160 Meter Sprint - great news for all you fans of the Top Band!
The Sprint will be on Wednesday evening January 24th and will run from
8:30 to 10:30 PM EST, 7:30 to 9:30 PM CST, 6:30 to 8:30 PM MST and 5:30
to 7:30
I always liked the looks of those FT-900 main tuning knobs on the K2. I had
an opportunity to use one and the extra weight felt good. There don't seem
to be very many extras of these knobs floating around. I've been looking
for an alternative that would have the nice feel of that outer ring and
Dohn,
You may want to look at the Yaesu FT-847 tuning knob. I have not yet
removed mine from its home on the FT-847, but it is about 1 1/2 inch
diameter and has a finger-dimple hole and a rubber ring. Yaesu considers
the ring a separate part.
The FT-900 knob has been discontinued, and many
Oh boy... again... ;-))
Take a look at the Yaesu FT-100 knob... I have one on my K2, and one spare for
my next K2.
Take a look at my website at http://web.mac.com/jf.menard/
Click on the K2 MOD tab i the menu look at the last two pics... and click
on it to make it bigger...
A very nice
Got the replacement choke and put everything together and the transmitter
checkout went fine.
Still have to add the KNB, KAT and KAF but I'm going to add those after
playing around and making sure everthing is working right on the base unit.
Plan to use the rig in the 80m QRP foxhunt tonight!
I have replaced the phones whitch in my K1 three times. Is there anything else
I can do? The board is givingb out because of all of the replacements. 73 de
Bob, WG7Y
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As I tune the K2 across the band I get periodic little blips. They aren't
birdies and they don't hinder reception. As I sit either side of the
frequency where the blip occurred there is no apparent signal or
interference. They actually tic the S-meter a few notches as well. The blip
occurs
If anyone has an older (Revision B - SN 3000 series) MCU (U6) that they no
longer need, please let me know. I need to replace mine which has been damaged.
Please contact me off list.
Thanks,
Daniel AA0NI
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Thanks to all for the many responses. The Cliffton Labs interface is
clearly the way to go.
Don K7FJ
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I don't think this is true. Before the KPA100, my K2 had no fan. Front
panel control board ran with no cooling support and drift was never an
issue.
I run the KPA100 with an external fan which keeps the hovercraft wizzer
on the back of the rig from coming to life. Again, the front panel and
Moi aussi. I have the FT100 knob on my K2. It is much nicer to use than the
stock knob but I wish it was a bit bigger. There's not much room though for a
bigger knob on the crowded K2 front panel so I'll live with it the way it is.
I bought my knob new from Yaesu parts.
- Keith N1AS -
- K2
There is a fan accessory from Ten Tec for the Orion that
is mounted on a metal bracket. It fits very nicely onto
the KPA100 heatsink and is pretty quiet. You can even put
a resistor in the line and drop the voltage from 12V to
5-7 V to cut down the RPM and make it almost dead quiet
while
Jim,
Those are the 5 kHz transitions from the PLL.
First check the resistance across RFC15 on the bottom of the RF Board - it
should be quite low. If it is open and you do not have an immediate
replacement, place a shorting jumper across it.
If RFC15 is OK and you still have the clicks, re-run
Amateur astronomers use Peltier devices to cool the CCD on their
astrocameras. The Peltier unit cools and circulating water/alcohol removes
the heat. Without cutting a fin, aquarium tubing could be woven through the
fins circulating cool liquid via a small pump system. These systems are
small
Eric put out a discussion of using an extra
high impedance input buffer stage taking its signal from the output of the
2N5109 to properly isolate the external IF device.
Does anyone have a simple circuit already worked out for this? If so, will
they share it?
I was contemplating a 2N5179 but
Then there is always liquid nitrogen. g
Better check the temp specs on the finals -- might be TOO cold.
Mark
On 1/23/07, Gil Stacy [EMAIL PROTECTED] wrote:
Amateur astronomers use Peltier devices to cool the CCD on their
astrocameras. The Peltier unit cools and circulating water/alcohol
Then there's Tygon tubing woven in-and-out of the fins,
a bucket of water... with ice cubes? ... and an aquarium
pump. (;-))
To be realistic ... a 12V computer fan from Radio Scrap
with four sitck-on felt pads resting on top is really easy and
inexpensive.
73! Ken Kopp - K0PP
[EMAIL
I know.I've been thinking about a water cooling system
for my computer instead of noisy fans...with a goal of
a silent, or almost silent, PC. Thought this may be
interesting to try with the radio as well.
On Tue, 23 Jan 2007 18:57:06 -
Ken Kopp [EMAIL PROTECTED] wrote:
Then
I have K2, s/n 54?? with a KSB2, KIO2 and a
KNB2(unbuilt) with separate KPA100/KAT100 in an EC2
case. All has been professionally built(except KNB2)
and works perfectly. Also included is the Elecraft
MD2 mic w/PTT foot switch. Comes with all manuals,
cables and the extra cover for the EC2.
In a message dated 1/23/07 2:08:47 PM Eastern Standard Time,
[EMAIL PROTECTED] writes:
I've been thinking about a water cooling system
for my computer instead of noisy fans
http://www.tomshardware.com/2003/12/30/5_ghz_project/index.html
Anything worth doing is worth overdoing
73 de Jim,
Cool! If they can overclock a CPU to 5 GHz, perhaps we can coax 200W out of
a KPA100.
Jim KA2RVO
From: [EMAIL PROTECTED]
To: [EMAIL PROTECTED], [EMAIL PROTECTED], elecraft@mailman.qth.net
Subject: Re: [Elecraft] PA cooling
Date: Tue, 23 Jan 2007 19:14:30 EST
In a message dated 1/23/07
Don,
Maybe my thinking is too simple. But here goes. I believe that we both
have indicated that quarter wavelength can eliminate RF in the shack among
other RF problems caused by less than a perfect antenna system. I believe
that we also agree that a half wavelength does not do that.
Perhaps you are being a bit hard on the poor half wavelength, Jim!
Actually, the villain in your scenario is the 1/4 wavelength wire, not the
1/2 wavelength wire. But they are both really good guys around the shack!
A wire that has RF flowing along it with show a range of impedances from
high to
I have K2 #5439 that I would like to sale. The K2 has the following
options;
KNB2 noise blanker
KSB2 SSB option
K160RX 160M / RX antenna
KAF2 Audio Filter Real Time Clock
KPA100 100 Watt PA
KAT100-1 150 Watt ATU
The radio and all accessories were very carefully built and all work great
with
Don,
I concur with what you are saying.
At one installation the equipment was quite a distance from the ground rod.
I installed a good DC ground. But there was still RF floating around. What I
did was parallel insulated wires between the amp and the ground rod. Each
wire was longer than the next.
I have been trying to use the computer control for my K2/100. I am using the
RS232 port on the KPA100. I cannot seem to ever get any response except
KY0; to the KY; command. If I send a KY; immediately after
KY 123456789012345678901234;
while the K2 is still sending the first character, it should
Don,
Seems we are in basic agreement. I agree that the equipment termination
point of the ground wire can be a subtle thing. My preference would be at
the actual point of generating the RF, i.e. the transceiver usually. Here I
go again, but my way of thinking is an antenna tuner is only an
That was very helpful. Thanks and 73
Kevin w9cf
On Tue, Jan 23, 2007 at 09:52:57PM -0800, Jack Brindle wrote:
Kevin;
This tends to be a confusing command to many people. I have found
that using the extended response format provides better information
than the basic response, allowing
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