Hi Tom,
Have been doing some idle thinking (global thinking if you don't mind) about
the installation of new bibs and bobs into the K2 - such as the zero beat
indicator. Seems to me that the beast is growing like topsy with a lot of
little pcbs and probably a lot of messy interconnections, and
Hi, all concerned:
I have two K2/100's (34XX and 37XX) which have 40M c-w-mode power-out
variations at a rate of about once a second. For example, if I set 40W out,
they will alternate from 35 to 40W. It happens on a dummy load, into an
antenna, and makes driving an amp interesting ;o)
On Sep 21, 2004, at 9:34 PM, Tom Mc wrote:
I've read this before about interleaving the windings of T-4, but I
didn't
realize that Gary was officially suggesting it. Can someone tell me
what
interleaving means? I must have played hooky that day in class. Is
it
sort of twisting the
One more comment: don't install the RS232 driver chip of the KPA100,
only of the KIO2. This way, the cable between K2 and KPA100 and
RS232 PC can be made symetrical
I've also made small mods to the KAT100 (changed the diodes)
so that the small round plug can be used to feed the K2.
Now, there
G'day,
No, not twisting. Interleaving is simple. Pass one wire through each
hole, then pass the other wire through each hole. Keep alternating
until all the windings are done. As I remember, one winding has more
turns, so start with that wire first.
This is different from the original
Yves wrote:
What do you use as a portable antenna with the K1?
I *always* use a simple, cheap, resonant, wire dipole. More than 30 years
of playing with portable antennas, often in side by side comparisons with
vertical antennas, has shown me that even high-dollar verticals without very
good
Yves
I completed my K-1 earlier this spring. If you're getting very little, I
would be inclined to suspect the radio (or even the antenna plug) rather
than the antenna. I can put 15 feet of hookup wire up a tree in Toronto and
get acceptable reception ;-}. If you can't pick up signals with a
Rich McCabe wrote:
Sounds like both K2's I have had. 38xx and 44xx. The output jumps all
over the place. My amp does not like it either. When I posted about it,
the response I got was that is normal.
See http://www.elecraft.com/Apps/Power_Control_Mod.html
--
73,
Vic, K2VCO
Fresno CA
Interestingly, my TS850S does this too... it's a well known bug in the TS850.
The Kenwood problem is in the ALC circuitry, new rigs don't do this... it
develops over time.
I'm not familiar with the K2 circuit, but it sounds like it could be a
decoupling problem.
Larry N8LP
- Original
It IS in the software ALC... reflects the ALC's attempting (at about a
1-seconds rate) to 'stabilize the output at the requested power level...
Seems I recall there being a fairly simply remedy to this problem... at
least to remedy MOST, if not all, of it.
If I recall, it was the addition of
OK, this may be a silly question but... Why do I need
a KIO to run the KPA100 remotely? In my case, I just
want to have the PA in a seperate enclosure to keep it
in a better ventilated area of my congestion (maybe 2
or 3 feet away from the K2). Is this too long of a run
for the I/O cable or RF?
Rich, Dave, and all,
This is 'usual' behavior for the K2 - it seems the power shifts by about 5
watts in high power mode. It is present, but not noticable in low power
mode because the shift is only about half a watt which is a smaller
percentage of the power setting.
Checking the
It is covered in the K2 Manual Troubleshooting section 160 Power output
fluctuates. ... as well as the place that Vic mentioned.
73,
Ken K3IU
~~~
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Tom Hammond
I believe on one of the sites listed there is schematic describing how to get
around buying a KIO2. Don't recall which. That's my recollection at least.
dt
.
--- J F [EMAIL PROTECTED] wrote:
OK, this may be a silly question but... Why do I need
a KIO to run the KPA100 remotely? In my case,
I did not try this on my newest 44xx K2, but tried this on the 38xx and it
made no difference whatsoever. It is most noticable in tune. More of an
annoyance than a problem.
Rich
See http://www.elecraft.com/Apps/Power_Control_Mod.html
--
73,
Vic, K2VCO
Fresno CA
http://www.qsl.net/k2vco
OK, this may be a silly question but... Why do I need a KIO
to run the KPA100 remotely?
The auxbus must be connected between the K2 and the KPA100. The auxbus is
conveniently brought out on the KIO2.
73,
Lyle KK7P
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G'day,
Sounds like both K2's I have had. 38xx and 44xx. The output jumps all
over
the place. My amp does not like it either. When I posted about it, the
response I got was that is normal.
If this is the often reported O/P power change then yes this is normal,
however, it shouldn't be. The
OK Folks,
I found the info that Tom was referring to - it is in a reflector posting
from Wayne Burdick dated 8/5/1999. I have appended the text to the bottom
of this reply.
73,
Don W3FPR
- Original Message -
It IS in the software ALC... reflects the ALC's attempting (at about a
Hi
The KIO2 is required in the QRP K2 to supply the interface signals for the
KPA100. This is the auxbus, 12 volt switched, 8R signals. It is possible to
build a cable from the control board to a 9 pin connector to provide these
signals but you will need to duplicate the RF bypassing used on
http://www.njqrp.org/data/qrphomebrewersprint.html
QRP Homebrewer Sprint
. Sept 27, 2004 -0400 UTC
(8PM EDT to Midnight Sunday evening in the US)
Put down the soldering iron and get on the air with other QRP homebrewers!
The NJQRP and QRP Homebrewer magazine are sponsoring this fun,
Julius,
Easy answer (but not really 'silly') - the KPA100 has no bandswitch or other
controls - it gets its information from the K2, so the K2 must have a path
to communicate with the KPA100. There are 4 signal lines on the KIO2
connector that contain the signals required.
I might point
Rich,
Further to my earlier posting. The resistor to change is R98 on the RF
board. I have changed mine from 270 ohms to 1200 ohms and that completely
removed the power hunting.
Without doing this it is almost impossible to properly set up the KAT100
if you build one.
Regards,
Mike VP8NO
Good Job on building the XV144 transverter for the QST review DON!
Im referring to QST October 2004 this months review written by Gene Zimmerman
W3ZZ. Theirs a small green article inside that one from KD5NDB a call you
probably recognize.
WT5Y
G'day,
Just downloaded and installed MMSSTV v1.11, plugged the K2 ext speaker
audio into the PC sound card and it ran right out of the box with
virtually no setting up.
FL2 OP1u, KDSP to LPASS. Good pictures from CE3TMM, EM1HO and PY7TK on
14230kHz.
FWIW.
Regards,
Mike VP8NO
My TS-850 began doing this. It started as just a small variation and
then finally got to be a steady pulsing. The ALC reading was
synchronized with it. Finally dropped the radio off at Kenwood when I
was in So Cal for the Cactus Intertie meeting. Got it back within a
week (obviously they knew
On Sep 22, 2004, at 6:59 PM, MC Carpenter wrote:
even with new batteries the low bat come up is this a adjustment
problem or is a component not of the correct value
Hi MC,
The LO BAT warning threshold is programmable using the BAT menu
entry. You may have it set too low.
You can also
KXPD1 Plug In Keyer Paddle. I assembled it and it works fine.
$60.00 Postal MO or Cashiers Check. I will ship via USPS CONUS.
Reply via email to me [not on Elecraft Group]
ae7rw at arrl dot net
Thanks,
de Rich AE7RW
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