Steve,
A very useful tip.
I purchased a small reel of tinned copper wire about 22SWG (don't know the AWG)
and use that when bridging across cut tracks etc.
73
Stewart G3RXQ
On Sat, 23 Jul 2005 14:01:25 -0500, Steven Pituch wrote:
Hi all,
This is just a helpful tip for those who might need
Roy,
The thermal pads are probably fine. On my KPA100 I found the same, after having
ordered a new set of pads. I would keep them as spares.
The 1k resistor across RFC3 is to reduce an 80m resonance in the KPA100 T/R
switch circuit. It should be OK mounted on either side of the PCB, provided
You and your brother got the same callsign! What are the odds of that?
Dan / WG4S / K2 #2456
snip
My brother passed an element a month for his [Amateur] Extra after 4 months.
He is John AI4EL.
James AI4EL
/snip
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Note the date.
http://tinyurl.com/bg5gc
73 de Jim, N2EY
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Jean-Francois,
You certainly could do that - it should not alter any other function that I
am aware of. The current display can be trimmed by changing Control Board
R7.
R10 and R7 are 1% resistors, and that provides repeaability from one K2 to
another - one could hand-pick from 5% resistors
Thanks, I will try and let you know my result !!!
73
Le 05-07-24 à 07:32, W3FPR - Don Wilhelm a écrit :
Jean-Francois,
You certainly could do that - it should not alter any other
function that I
am aware of. The current display can be trimmed by changing
Control Board
R7.
R10 and R7
I'm thinking of getting the KDSP2. I already have a
KAF2, but am looking at playing with DSP, as a bit of
a technical challenge. Am I right in thinking that
the DSP board is the DSPx used in the DSP 10 2m
software defined radio? Also, how easy is it to swap
out the DSP board to use it in a DSP
Hi John,
The one thing I noticed with great interest was the very nice
push-up mast with tripod that you used for the spiderbeam. Believe
... ...
awkwardness. Where did you get your mast from? Would you mind
sharing the price? I might have to think of importing one, or
trying to make one
Folks,
After thinking about this voltmeter 'adjustment' a bit more, I discovered I
had erred. The value of R10 should be INCREASED to make the reading higher.
Sorry - I guess I had a 'senior moment' and got my head turned around wrong.
73,
Don W3FPR
-Original Message-
Jean-Francois,
Hi,
pushed it up to about 11m. The mast itself is the heavy version of
the aluminum 10m mast (FGRM 70 1,95/10/6) with one extra pipe to go
up
to 12m. They called it a FGRM 70 1,95/12/7. The transport length is
c.
I just realized that heavy version might be misunderstood: I do not
mean the
I'm planning to use a little higher value trimmer, so I would be
able to be more or less in a second. I let you know wich one I use...
I would like the really smaller one (in size) that it can take not
much space as the actual resistor.
Le 05-07-24 à 09:03, W3FPR - Don Wilhelm a écrit :
Don, Do you think after the voltage will be adjust according to an
external DC voltage and an accurate external volt meter, if we change
later the DC source supply, like a battery with a little bit
different voltage, instead of a standard power supply by example, do
you think there will be
Don, Do you think after the voltage will be adjust according to an
external DC voltage and an accurate external volt meter, if we change
later the DC source supply, like a battery with a little bit
different voltage, instead of a standard power supply by example, do
you think there will be
You and your brother got the same callsign! What are the odds of
that?
Dan / WG4S / K2 #2456
Must be Zillions to 1, I expect to win the lottery any day.
John is AI4EL
I am AI4CQ
73 James
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Hello Dave!
... Am I right in thinking that
the DSP board is the DSPx used in the DSP 10 2m
software defined radio?
The DSPx module used in the KDSP2 accessory may use the ADSP-2184N or
the ADSP-2185N DSP chip. The -2184 has less memory than the -2185, but
has more than enough for the
Hello all,
Did you work me? I sure hope so! Ron, WB3AAL, and myself, WA3WSJ, had a
ball activating Turkey Point Lighthouse on Saturday, July 23rd. We
worked many stations and I had some fine and long QSOs. The weather was
hot and the black flies were biting, but the Qs were just great! If you
Please forgive me for putting on my physics teacher hat and doubly
forgive the algebra which is to come :^))
I'd argue against trying to recalibrate the K2 internal voltmeter to
compensate for the diode drop in series with the supply. How come?
Because changing the resistor values in the voltage
I am remined of the Indian proverb: When you discover that the horse
you are riding has died, your best strategy is to dismount. Opinions
expressed to the FCC re the NPRM will likely be more effective than
those expressed anywhere else.
Fred K6DGW
Auburn CA CM98lw
[EMAIL PROTECTED] wrote:
Jim,
You are exactly right - it will read a bit high for all voltages. I don't
believe that would be a problem for most folks since they seldom use the
voltmeter for anything other than monitoring the K2 voltage. If you use the
K2 metering circuit in its EXT mode by changing the jumper and
I have a couple Elecraft Items for sale, An assembled K2 and unbuilt KPA100.
The K2 is serial number 315 with version 2.01 firmware. It is in excellent
condition and works perfect. It has the following options
KAF2 - audio Filter
KSB2 - ssb option
K160RX - 160meter and rec ant
KAT2 - internal
Yesterday the air conditioning went out in my ham shack while I was using my
K2/100. The temperature went up to 95F, and the K2 became quite hot while
running at 100 watts. I noticed that when I changed bands and held TUNE, the
K2 would not cycle back to receive after a few seconds. I also
If you want the K2 voltmeter to read the correct external voltage, why not
connect directly from the input power jack to the external input of the
voltmeter, and slide the switch/strap over to the EXT position? In this way
you bypass the diode loss and there is no need for recalibration. Or are
Has anyone had a problem with their K2 speaker? Mine sounds like something is
loose whenever I listen to cw at around 60% volume, like something vibrating. I
opened the rig up and everything is very secure so I am wondering if it is the
speaker.
john-n3drk
John,
It is very likely a wire stuck (magnetically) to the speaker and touching
the speaker cone. It could be on the outside of the speaker (if you are
fortunate) or it could be on the inside and you will have to remove the
speaker to see it.
73,
Don W3FPR
-Original Message-
Has
Roy,
I may be wrong, but I would suspect a bad solder joint somewhere - things
expand when they get hot and your symptoms do not sound like there is any
particular component that has failed. Because your stated problem seems to
center around the SWR display, I would look at the circuits
John,
Sometimes the speaker frame gets warped after shipping or some other
mechanical shock. The speaker magnet is very heavy, which helps
contribute to the efficiency of the speaker. If it is warped, you can
straighten it by hand. Both of my K2s had this problem initially, but
it was
The KPA100 has been sold, thanks to all who responded..
73
Tim
NZ8J
- Original Message -
From: NZ8J [EMAIL PROTECTED]
To: elecraft@mailman.qth.net
Sent: Sunday, July 24, 2005 2:34 PM
Subject: [Elecraft] FS: K2 and unbuilt KPA100
I have a couple Elecraft Items for sale, An assembled K2
Super Antenna's Model MP-1 40-10 meter portable antenna in good condition.
Comes with radials, universal mount and clamp and the optional tripod base.
$90 shipped and insured in the lower 48.
thanks
Tim
NZ8J
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In a message dated 24/07/05 23:06:17 GMT Daylight Time, [EMAIL PROTECTED]
writes:
Sometimes the speaker frame gets warped after shipping or some other
mechanical shock. The speaker magnet is very heavy, which helps
contribute to the efficiency of the speaker. If it is warped, you can
I picked up some very small wire which I have wound up and loaded into a
used 35mm film can... it is the very fine very flexible wire which I always
carry along for 20 mtrs +. It tapes onto the strap of my rig strap and
works very well. I will try the flex weave in the future, but let's not
After completing the IF alignment (p 64) I could hear nothing on K2
#4785. After much hairpulling and unfruitful signal tracing, I gave up.
Then, my VERY good friend, Roy, W4WFB, offered to have a look. He has
built two K2s. He found the problem, and here's what it was. On p. 59
(in my
I was on my deck today with the KX1 and the bands were really bad here. I
was trying a Par 40/20 end fed antenna on top of a new Jackite 28-foot
windsock pole. I called CQ near 7040 anyway and a VE3 came back to me. No
big deal, but he was on SSB! We had a nice QSO for about 20 minutes. I
Good Evening,
The bands were both less than stellar tonight. QSB was an often made
comment on 20 and once on 40. QRN was strong on 40 and then we had a BC
station land near us which called the show. But there were some folks
willing to put up with the slings and arrows of outrageous
The first error from my recent report is hot off the press.
Rod was using his K1 instead of his K2 this evening from Texas. He
reported fast and deep QSB. I agree, I caught the information on the
upswing ;)
So correct his info to read
On 14050 kHz at 2257z:
K5BGB - Rod - TX - K2 - 1126 =
My XV50, fed by my K2 through an XV60 transverter adapter always
emits 20 watts of power regardless of the power setting on the front
panel of the K2.
The XV60 ALC circuitry seems to be working. I've measured pin 6 of J13
on the XV60 using various power control settings and I get the
expected
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