Bill,
Please be more descriptive about the "ragged" appearance. And yes,
please confine it to what happens when operating into a dummy load.
73,
Don W3FPR
On 12/13/2013 8:52 PM, William Stewart wrote:
I have an older K2/100, but it has all the mods that I know of and it
has served me well f
Can anyone comment on the QSK or rather, lack of QSK, re the amp AL 811(H)?
What sort of delay are you running to hold the amp 'on' while in CW?
I'd been somewhat concerned about the frequent relay cycles on the amp between
CW... delay as long as I can but therestill is some delay (amp relay drop
I have an older K2/100, but it has all the mods that I know of and it
has served me well for about the past six months that I have owned it.
Recently, I noticed on the station monitor scope that there is a
"ragged" appearance to the waveform, on one side only, as I send CW at
100 watts, and as
Olli,
By coincidence I called Elecraft on this question yesterday. They said new
orders will be taken during January and that beta tests units are in the
field now and bugs are being worked by Brandon now. I'm on the order list!
Yes, I know at Dayton they promised early Fall.
Buzz
W3EMD
OK, I'll give it try.
I've done that, using the DL2 and a DC voltmeter. Given the max is 30W, how
much of a difference between requested and measured power can there be (at
30W)?
Thanks,
Chris
NQ8Z
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K2-KPA-ALC-problem-tp75
Chris,
There is no harm in that at all.
If you have a very long cable between your EC2 enclosure and the K2, you
may try shortening it.
I suggest you check the actual power output vs. the requested power
setting before attempting anything else.
73,
Don W3FPR
On 12/13/2013 2:52 PM, Chris Ki
I drive my 811 with 35 watts…and push out around 450…..u can drive it higher to
get the full 600, but I have found it wears out the tubes much faster…
My very best to all,
George KA3ZHX
On Dec 13, 2013, at 12:30 PM, Harold Fitzgerald wrote:
> I used an AL-811H for many years with my K3. Coax c
The manual I was looking at was KAT100 Revision A, Nov 5, 2002. (A vintage
manual!)
The current manual at the Elecraft site is KAT100 is Revision C, March 12,
2003, which on page 34 suggests putting "a 0.01 uF capacitor from pin 7 to
ground (inside the backshell)." for "Erratic power control wit
I used an AL-811H for many years with my K3. Coax connection and PTT is all
that is needed.
Some other things to think about:
- Ameritron 811H only need about 60 watts or so to drive it. At the
beginning, I ran about 100 watts into the amp, but after a few years I
noticed that the finals had silv
Sorry about the post with only one big paragraph. Sometimes when I trim the
post in Yahoo's Win8 e-mail client, it removes the formatting, too.
Mark
KE6BB
From: Mark Petiford
Sent: Fri, Dec 13, 2013 at 10:39 AM
To: Gary Hawkins ;
Subject: Re: [Elecraft] [KX3] Hi Curr Warning
Chris,
That is *not* in the newer manual that I have, and it is *not*
reasonable to do disconnect VRFDET.
Secondly, removing the VRFDET signal from the K2 MCU will cause the K2
(and KPA100) to go to full output at all times - sometimes in excess of
160 watts. If that continues, the base K2 PA
Not an AL-811, but I've used an AL-1200 with my K3. I used an RCA cable for
amplifier keying and a PL-259 jumper for RF.
I did not connect ALC, I instead adjusted the K3's power output as
appropriate.
73 de Dick, K6KR
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:el
Hi Mark - I used an AL-811 along with my K3 for almost a year. It works fine,
and the only two cables you need are the coax and the PTT line. ALC connection
is not recommended. Also, you will need an RF power meter between the AL-811
and your antenna (if it is resonant), or between the AL-811 an
Gary,I didn't find the table, but I did find two relevant posts:
This was the problem reported by one poster:
>>During xmit at modest power 8 - 9 watts, I occasionally see a msg flash on
>>the display that shows "hi curr". It seems that when that happens, the xmit
>>power gets reset to 5.0 watts
Hi Guys, I would like to hook up my K3 to an Ameritron Al-811 Amplifier. I
assume that I connect the K3 output to the Amplifier Input. An the Keying Cable
that is in the back to the Relay Plug on the Al-811? I see an ALC Output and
ALC Adjustment knob. But I probably don't need to use those. But
The KAT-100 manual, page 33, suggests disconnecting the VRFDET line at the
K2 in the event of "Erratic power control with K2/100".
Since may KPA/KAT are in the same box, it's unlikely I'll use the KAT
without the KPA.
Does this seem reasonable?
Thanks,
Chris
NQ8Z
--
View this message in co
Hi Gary:
That behavior of your CMP and ALC display is a mystery. There's no reason
why you should lose control over switching between those and SWR/RF in
sideband mode. I believe that, once you have CMP/ALC displayed, touching any
switch should return you to SWR/RF.
As with all processor-control
Hi all,
We've had a couple of reports that, upon upgrading to rev 1.79, KX3 users are
finding that the PA MODE menu entry was set to ON. PA MODE should only be set
to ON if the KX3 is connected to a KXPA100 via the control cable. This menu
setting causes the KX3 to look for the KXPA100 and KXAT
On 12/13/2013 2:24 AM, Kurt Pawlikowski wrote:
When you solder stranded wire, you loose strain relief. That is, under
any flexing, individual strands tend to break.
That's true, and it's why connectors on cables that subject to flexing
need good strain relief.
73, Jim K9YC
_
Hi Mark,
I have revision C2 of the manual and, if I remember correctly, the
important power voltage setting is >11V for full power. That being
said, if 13.8V is what is required this may explain what's going on.
The SLA nominal voltage is marginal. I'm going to purchase some
Lifepo/Lipo ba
Some progress..
1. The BFO setting for the R bar mode was set incorrectly, resulting in a
dsb-like transmission. The 't' in the filter settings really does mean that
the FL1 BFO is used for transmitting.
2. The power levels were within 1 watt at 20 or 30 watts via a DL2
measurement scheme. No
The KX3 and all other Elecraft transceivers that use a similar power
control mechanism will attempt to maintain the requested power output.
If the power supply voltage drops, the current must increase to maintain
the requested power output.
That often means that the High Current threshold will
Gary,
The 8 watts that Ralf mentions is correct, but according to the KX3
specifications (Owner's Manual rev. B4, Pg 51), that is possible when using a
13.8 VDC power source. Although I haven't used one for some time, I would be
surprised if an SLA battery voltage is that high during transmit.
Hi Gerry,
The unit does not appear to be hot.
Gary
On 12/13/2013 4:20 AM, Gerry leary wrote:
Is the radio getting too hot?
Sent from my iPhone this time
On Dec 12, 2013, at 9:11 PM, Gary Hawkins wrote:
Hi Ron,
Thanks for your response but could you clarify.
On the 12/10m bands I'm not s
Hi all,
Just carrying out resistance checks on my KPA100 before venturing
further. Q1 base reading is 11.5 ohms, Q2 base reading is 20 ohms which
is higher than should be expected. Problem? If so what should I look for?
73, Frank GI4NKB
_
Jim, Et Al,
Just a note about what I heard regarding the crimp/solder debate:
When you solder stranded wire, you loose strain relief. That is, under
any flexing, individual strands tend to break. Granted, our application
doesn't usually involve a lot of any type of strain, but it's a good
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