Looking back on it, to me the biggest advantage of doing a complete
inventory before starting construction was the problem of identifying
capacitors. I remember how thankful I was that the resistors were packed
in order and wanted the same convenience with the capacitors. I laid out
several
Hi All,
I'm just playing about with my K2 and have performed the mod to get a fixed
audio out on pin 8 on the mic socket as per LA3ZA's instructions, using a
10k resistor between R3 and the mic socket.
This works fine, but the audio out isn't quite enough to drive my PC
soundcard to the level I
David,
I would say the answer is 'maybe'. And the reason for the uncertainly is
that it depends on what you are driving.The impedance of whatever you
connect to the far end of the resistor will determine how much current wil
be drawn and the voltage developed across it.
You can install the
I am using the same mike with the kenwood cable on my K-2. Since it is
basically the same Heil mike that was made for the K2 but is no longer
available- I used the settings (jumpers) as described for the Elecraft MH-2
in the manual for the KSB2. To include the 5.6 K resistor from pin 1 to pin
6.
Hi John,
You obviously don't have any CATS.
Mine would think that was their own personal Disney
World.
I did not pre-sort my caps, but did inventory them
and then put them back into a feline-proof
container.
K2 5150 went together without a problem.
73 de Bob K3YT
Hi folks,
My friend Dennis, W4USR asked me to post his K1 kit.
K1 40/20mtr s/n 95 Purchased from Elecraft some time ago but never
assembled.
Please contact him directly. [EMAIL PROTECTED]
PeteAG7C
K2 s/n 4847
Pete Zawasky
PZEF Co.
www.pzef.net
[EMAIL PROTECTED]
252-249-3393
Hi Ralph,
Get 100 ft of 450ohm ladder line.
Cut off 34 ft for the feedline.
On the 66 ft piece, solder the end wires together. Attach insulators.
Cut one side of the 66 ft piece in the center and solder the feedline in there.
On the 66 ft piece, opposite the feedline connection, cut out 4
My question is.would I be-able to get more audio out of
pin 8 if I change the value of the 10k resistor in LA3ZA's mod ??
As W3FPR said, maybe, but in any case not by very much, and probably not by
enough to really make a difference.
You could fit the audio amplifier board on the
K2 #4842 has been fb for over a year, and I've been working between
baby diaper changes to complete my KPA100. Everything has proceeded
smoothly through the bias current adjust, but having problems with the
transmit tests. All proceeds okay to about 20 watts. With K2 power
RTFM.
The TUNE button puts out 20W.
The Key (or PTT) puts out the requested power.
Moving requested power with key down just confuses the issue.
Dan / WG4S / K2 #2456
___
Elecraft mailing list
Post to: Elecraft@mailman.qth.net
You must be a
How to operate Pedestrian Mobile with the KX1...
The KX1 is a great portable rig but it is also a great pedestrian mobile rig.
You can go to new heights, evade local power line noises and find hot spots
near
flag poles and in baseball diamonds.
Here is how to do it...
Step by Step,
John,
Your KPA100 is working as it should!
TUNE will transmit at 20 watts - it was designed that way.
If you want to use TUNE at the setting of the Power knob, press TUNE and
DISPLAY together, or press TUNE and rotate the POWER control to the setting
you want (you are already doing that).
You
You forgot to mention to watch out for following pedestrians. They tend to
step on the drag wire and this gets interesting when it comes up short.
Tends to yank the KX1 out of your hand, or in my case, bust the BNC to
binding post adapter off. Also taught me to buy a Pomona BNC to BP adapter.
Be aware too that the automatic power control circuit is not enabled in TUNE
mode. That is so the K2 won't try to adjust the output power automatically
while an Antenna Tuner is being adjusted, either automatically or manually.
Ron AC7AC
-Original Message-
From: [EMAIL PROTECTED]
Thanks to everyone for the suggestions. I have confirmed that the mic
is wired as per the MH2, including the resistor between pins 16. I
have done all of the KSB2 alignments as far I can. I still get a 10
watt carrier when I push the PTT in LSB and USB. In CW when I push the
PTT, I am getting
I just built and installed the KSB2 for my KS SN5319. I used the capacitors
for 2.6 MHZ bandwidth and the transmit audio sounds excellent and full
bodied as tested on my Mark V. I did notice on the receive audio that there
is some roll off below 450 HTZ regardless of where the filter/BFO is
Joe,
Sounds like you have a winner for an antenna. However the antenna you
describe is NOT a folded dipole. It would be a folded dipole if you did not
cut out the section of open wire line opposite your feedline connection.
Without the section cut out your antenna would be resonant on 40
Hi,
I am getting back on the air after 30 years QRT. I'm
trying to find someone to assist/teach me to build a
K2. I would be glad to pay you your normal going rate
for your time, knowledge and experience.
Thanks,
Johnne
__
Do You Yahoo!?
Tired
When keying my Alpha 99 via a shielded cable from the KPA100 J7 jack, there is
a small amount of stray RF getting into the SSB signal. This RF is not present
when the amp is used with either my 756 PRO2 or 706MK2G, and it is not present
when using the K2 at 100 watts barefooted regardless of
Jonathan,
As I indicated yesterday, I tend to believe that the wiring on your mic
cable may not be what you think it is.
Look at the end of the mic plug for the pin numbers - then check continuity
between pins 2 and 7 (or 2 and 8) with the PTT open, and then with it
closed. You should see an
all the capacitors are soldered now ;-)
but there is a new problem. I am missing one of the 30pF trimmer
capacitors. There are 2 red marked 50 pF but only 3 of the 30pF. I checked
all boxes and bags for a lost one, but did not find any :-(
How can I get a replacement?
73! de Werner OE9FWV
--
Hello,
my name is Uli and for about 30 years active in QRP. Most time in
CW, but in the last years also in digital modes.
My equipmennt is a modified TS50 (5W out), a PSK20 and a Sparrow
(www.qrpproject.de) with 5W on 20m. My antenna is a magnetic loop
for 30m - 10m from MFJ.
Now my question
Roy Morris wrote:
When keying my Alpha 99 via a shielded cable from the KPA100 J7 jack,
there is a small amount of stray RF getting into the SSB signal.
This RF is not present when the amp is used with either my 756 PRO2
or 706MK2G, and it is not present when using the K2 at 100 watts
barefooted
My K2 had a very irritating buzz (sympathetic vibration) at about 400 hz. I
noticed if I pressed on the top cover, it quit. No amount of adjusting the
four speaker mounting screws worked. That ruled out the speaker itself, I
reckoned. So, I took the top off, turned it upside down and put
Roy,
If you want to try a relay isolated keying line, connect one side of the
relay coil to the K2 amp keying jack and the other side of the coil to a
power source that matches the relay voltage - of course, the power source
common must connet to the KPA100 chassis if that was not obvious.
I
Ummm... Vic...
Might be easier (esp. on the back) to move the K2 instead! Heheh
73,
Tom N0SS
At 04:26 PM 2/20/2006, Vic K2VCO wrote:
Roy Morris wrote:
When keying my Alpha 99 via a shielded cable from the KPA100 J7 jack,
there is a small amount of stray RF getting into the SSB signal.
I'd like to tailgate Rick's comment.
I use a 60 ft dipole made of 450 ohm window line with the conductors
shorted together at each side of the feed point and at the outer ends.
The idea is to create a fat dipole, compared to a single wire.
I feed it with 450 ohm window line and a matching network
For operation in a public park, I carry a Radio Shack 9 volt mono
amplified speaker (about $13) and a short audio cable. Curious people
ask to hear what I'm listening to, and sharing the earphones is
unpleasant.
Also I use a 10 pack of NiMH AA's for extra power. The 10x1 holder from
Mouser
Hi all. I am operating my K2 and trying to get the DSP to work well. I think I
have the denoiser settings working a little bit but I haven't been able to get
the automatic notch, nt, set. The other day I had a signal coming in on LSB and
there was a hetrodyne on it. I turned on the notch and
Mea Culpa
I lost one of you in the shuffle between copy notes and the final list.
Please add one more QNI to the 20 meter list between WA5ZNU and W0CZ.
W0YG - Chas - CO - K2 - 4853
I heard him very, very well. However I did not transcribe him to the list
when I made it during a lull.
From: Harvey Howell [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Subject: [Elecraft] Getting K2 DSP To Work
Date: Mon, 20 Feb 2006 19:14:31 -0800
Hi all. I am operating my K2 and trying to get the DSP to work well. I
think I have the denoiser settings working a little bit but I haven't
I think that if the battery is fitted that gives a degree of rigidity to the
top
panel, and damps down any vibrations. On my K2 with no battery I used a piece
of
thick felt glued to the inside of the top cover. Works a treat.
73
Stewart G3RXQ
On Mon, 20 Feb 2006 22:33:00 GMT, [EMAIL
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