Hi Charlie,You need to go backwards from the antenna connector to T/R switch
then, to the final transistors, is there an idle current when you PTT? Then go
to the driver stage etc... I am actually doing almost the same kind of repair
now - The bias voltage in my VHF transistor 2m amp just disap
On Jul 1, 2009, at 8:31 AM, Geoffrey Mackenzie-Kennedy wrote:
> Yes some years ago, after a falling pine brought down the antenna in
> use
> while the K2/100 was transmitting (CW). Diodes D12 and D14 in the
> KPA100's
> T-R switch both failed into a shorted condition, and one of the
> diod
Julius wrote:
I like my HP Laptop, found one that still had a serial port with XP on it.
Vista has been nothing but a pain on all the computers I've used it on so
far.
-
That's an excellent example of how experiences vary. Over the past year I've
swapped
I was the one that had a bad Q8/Q9 and R66 (actually the bad Q8/Q9 is
what creates the bad R66). Anyway when I had this issue the RX was
pretty severly affected as well. When I read your message I was
thinking it was the same problem that I'd had but the fact that your RX
seems ok makes me think
Checked with a magn lens.
Checked it with the image in the istructions, no doubt. Checked with
smoke test. My K3 runs great. Oh by the way it is the $20 or so mod
for the KI03. My meter is a Fluke 77. Mybe my old shaky hands can't
hold the probes like they did once. So until my K3 melts down
Anthony,
There is nothing wrong with the resistance readings. Yes, greater than
means just that, and it can be much greater than. Different DMMs will
indicate different values for very high resistance, and the value marked
in the manuals as 'greater then' is intended to address these differen
Hi John:
You will need a buffer amplifier between the IF output of the K3 and
even then, it will not drive the SM-220 properly. I've tried it and was not
happy with the end results. Fern
- Original Message -
From: "JPHN POWELL"
To:
Sent: Wednesday, July 01, 2009 4:55 PM
Jim Brown wrote:
> I've never needed more than a simple splitter cable to run two sets
> of headphones from any ham transceiver, including a K2 or K3. This
> year, our FD rig was a K3 set for SPKR + PHONES. The operator wore
> the cans, visitors could hear what was going on. Worked great!
RS
>I am building my K1 . . . .
>at the DC Voltage check . . . .
>passed the actual "smoke test" . . . .
>I am getting . . . .
Interesting. I'm at the same stage and had the same results. I had
to leave it (last Saturday) and won't be able to get back to it until
this Saturday, but I had a good re
I am intending to interface my K3 with a Kenwood SM220 and installed the
Elecraft KXV3 Interface to achieve this. Is there any other problems that may
occur, other than to retune the SM220 bandscope input to the K3 IF frequency ?.
Comment and suggestions, ideas, etc. will be most welcome
Thanks i
Hi Gents,
K3 sudden loss of RF power output:
I was operating the FD event over the weekend...had a nice
pileup going...I heard a "pop" in the headphones and discovered
that there was ZERO RF power output when there should have been
100 Watts. Receiver was OK and the radio was otherwise "acting"
Hello,
I am building my K1, and have completed the first section of the
build, and am at the DC Voltage check stage on page 30 of the
manual. While the unit seems to have passed the actual "smoke test"
aspect of the initial application of 13.1V of DC power, I am getting
0V DC readings at
If I am inclined to use a splitter... for left ear/right ear I prefer a
crossover network.. in the audio stream, high side feeding one ear.. low side
feeding the other... with the cross over tuned very nearly 600 cycle. Then...
when tuning across a weak but almost strong enough to be esp...
I agree!
This product has been around for a while. It is time for an extensive
service manual containing at least PCB stackup and layout with component
placement, *updated* schematic(by now oct 2008) and updated BOM. Further
there should be information available on adjustment of all critical
parame
Hi All,
Pardon me if this is a repeat of my previous suggestion. I can't remember
where I posted it.
I use a small, AA cell powered, headphone amp called a "Boost-A-Roo". It's
not a whole lot bigger than the 2 AA cells that power it. It has output
jacks for 3 pairs of headphones. It's eith
Bill,
Stick with XP... I can understand the temptation of Windows 7, but carefully
consider the track record of Microsoft's new releases. There is always the
possibility that drivers that work now will never be supported with the new
OS.
I like my HP Laptop, found one that still had a serial por
Had a great time using my K3 #1502 as the CW rig at the 2A WS4Y op in SE KS.
Over 850 QSO's even with shutting down for several hours due to storms. Ran
on a couple of golf cart batteries charged by solar panels. Antennas were a
2 element triband yagi and a 40/80 meter vertical. The rig barely
Had a great time using my K3 #1502 as the CW rig at the 2A WS4Y op in SE KS.
Over 850 QSO's even with shutting down for several hours due to storms. Ran
on a couple of golf cart batteries charged by solar panels. Antennas were a
2 element triband yagi and a 40/80 meter vertical. The rig barel
Hi Keith,
Well blow me down ! I twiddled the rf pot a couple of dozen times and guess
what ? It's OK now ! Must have been a bit of dirt in the pot. I might get a
spare on my next order to Elecraft.so that's 1 x K3 with 100w pa , 1x
1500watt PA module , 1x rf pot ...
Many thanks. Am c
Duane,
Have run into the same thing as others have mentioned. Should you need to
replace the two diodes in question, you may want to consider mounting them
on the opposite side of the board. I found they were easier to replace,
should you have to do it again.
The best thing to eliminate this pro
Had a great time using my K3 #1502 as the CW rig at the 2A WS4Y op in SE KS.
Over 850 QSO's even with shutting down for several hours due to storms. Ran
on a couple of golf cart batteries charged by solar panels. Antennas were a
2 element triband yagi and a 40/80 meter vertical. The rig barel
Had a great time using my K3 #1502 as the CW rig at the 2A WS4Y op in SE KS.
Over 850 QSO's even with shutting down for several hours due to storms. Ran
on a couple of golf cart batteries charged by solar panels. Antennas were a
2 element triband yagi and a 40/80 meter vertical. The rig barel
In this case, the cable was made from twisted shielded pairs. This was after
one of the discussions on the K2 cables on this reflector. The cable I built
also did not have the dogleg, just rig to K2.
I, too, had problems on 160 at one point in time... The base of my vertical,
and max current, is
On Tue, 30 Jun 2009 15:34:27 -0700, Dick Dievendorff wrote:
>I used a Behringer HA-400
Behringer equipment is well known in the pro audio world to be of
VERY poor quality, and the company is well known for extremely poor
service. I would also expect it to have RFI problems. The company is
als
All,
Great FD here in Missouri camped at Lewis and Clark State Park. Operated class
1B with K3, deep cycle battery and 15 watt solar panel. Antenna was 80 meter
doublet at 30 feet. The battery was never taxed during the 24 hour event.
My first thought when the FD started was of my novice day
On Tue, 30 Jun 2009 11:15:50 -0700 (PDT), Julius Fazekas n2wn wrote:
>My first attempts were OK, but laced with problems. Often I had to drop from
>5 watts to 2 to keep my logging computer from locking up in a key down
The fundamental cause of this problem is the improperly designed serial cable
What mod/document are you referring to about Karl?
If there's an error in one of the docs we want to fix it.
AFAIK, *all* mods are carefully tested including making the resistance
checks on an actual unit to ensure they are accurate before the document is
released.
If it says "open circuit" t
Karl,
Did you cut the correct traces?
You should read "infinity" on your meter after the cut, and not "0".
Measure across each cut - one probe on one side of the cut and the other
probe on the other side of the cut.
73,
Don W3FPR
KARL MARDERIAN wrote:
>First off I ran across some people t
> Has anyone seen the K2 act like this before?
Yes some years ago, after a falling pine brought down the antenna in use
while the K2/100 was transmitting (CW). Diodes D12 and D14 in the KPA100's
T-R switch both failed into a shorted condition, and one of the diodes in
the K2's T-R switch faile
well, it was Harris's response that the battery needs changing -
waiting for someone from Elecraft to get up and respond sometime - no
big panic :-)
73 de M0XDF, K3 #174
--
He who asks is a fool for five minutes, but he who does not ask
remains a fool forever. -Chinese proverb
On 1 Jul 2009
At 7/1/2009 04:29 AM, David Ferrington, M0XDF wrote:
>Thanks Harris, I thought it might be that - Battery obviously doesn't
>last that long when the K3 is not connected to 12v.
What battery? The only battery in the K3 is the 2032 lithium battery
for the clock and memory backup. It doesn't beep
Or, maybe it wants out?...scared of the dark...:-)
Gary
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Thanks Harris, I thought it might be that - Battery obviously doesn't
last that long when the K3 is not connected to 12v.
73 de M0XDF, K3 #174
--
It is forbidden to kill; therefore all murderers are punished unless
they
kill in large numbers and to the sound of trumpets.
-Voltaire, philosopher
Yeah right - I just want a radio, not a panacea :-)
73 de M0XDF, K3 #174
--
The high minded man must care more for the truth than for what people
think. -Aristotle, philosopher (384-322 BCE)
On 1 Jul 2009, at 08:46, pd0psb wrote:
>
> It's the sporadic E indicator. Double beep means MUF has reac
It's the sporadic E indicator. Double beep means MUF has reached the
presetted level set in the Config menu.
It can also be the K3 has received a cellphone connection request (3beeps)
:-)
73'
Paul
PD0PSB
David Ferrington, M0XDF wrote:
>
> Due to other commitments, I've had my K3 disconnected
Change the battery. Harris K9RJ
--- On Wed, 7/1/09, David Ferrington, M0XDF wrote:
From: David Ferrington, M0XDF
Subject: [Elecraft] K3 double beep when not connected
To: elecraft@mailman.qth.net
Date: Wednesday, July 1, 2009, 12:03 AM
Due to other commitments, I've had my K3 disconnected from
Due to other commitments, I've had my K3 disconnected from everything
and sitting in it's case for a few weeks now :-(.
I notice every now and then, it gives a double beep. Don't recall
seeing this described in the manual, can anyone explain what this
means - other than it reminding me I shou
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