On Tue, 30 Nov 2004 15:45:37 EST, [EMAIL PROTECTED] wrote:
In a message dated 30/11/04 16:46:51 GMT Standard Time,
[EMAIL PROTECTED] writes:
That's what I was doing, however, because anything capacitive slows the rise
of
the 5A rail, and hence the correct MCU initialisation, I was chasing my
No Tom..only when running the KPA/100 did we hear the spur. I fixed it
with the help of Ron ZL1TW but it may be considered an untested/experimental
mod and as such did not get posted to the Elecraft reflector.
I've e-mailed Gary and told him of my successful experience with it. There
are 5 of
Hi Tom. If you already have the KPA100, look on the rear panel and you will
see an RCA jack marked PA KEY OUT between the ground connection and the
power connector - this will allow you to key your external amplifier
directly - but only if your amplifier has a positive voltage for its keying
Thanks Tom, Tom Ray. I also had several off list
posts.
I wasn't aware of the rules for CQ WW. So for this
year it would be out of play. So anyone who is
interested should let me know and I will compile a
list. I'm open to name suggestions.
Maybe just a general contest group, I've only been
Chas,
The KPA100 specs state that the PA Keying Output will sink up to 1 Amp and
handle up to 200 volts. This is only for positive voltage sources (it will
not function with negative voltages), and it behaves similar to a contact
closure to ground.
73,
Don W3FPR
- Original Message
I've had trouble with PIC chips that don't have the brownout reset
function.
The RC circuit on the reset line (mentioned by G3VVT below) is a good idea.
The CPU can also go into never-never land if the Vcc droops a little due to
a brief line voltage drop-out.
Now a days, I use an external
In this review, the captions to the response curves say that they are
for the DSP. Inspection shows that they actually reflect the combined
response of the crystal filters and the DSP. So the uninitiated would
conclude that the pass band response of the DSP is really that bad whereas
the
Eric Ward wrote:
I have been interested in building some version of a visual zero
beat detector that uses a PLL tone-decoder IC for use with the KX1. I
have
read about the K2 guys using N0SS's PC board version of the circuit
designed
by KR5L. Has anyone tried it (or the Jackson Harbor
01 DEC 04
Dear K2 Owners,
I have just completed the control board on the K2, only problem is that I
didn't wear a wrist strap when I installed the chips on the board. I work in
a fairly high humidity environment but my floor is carpeted, does anyone
think I will have problems when I do my
Well I just gave my KPA-100 a workout on 10M. I set the rig at 27WPM 100W
with a 20 second CQ (3 CQ's + 2 callsigns sent twice) with a 4 second pause in
auto repeat message mode.
I did not get an answer in the 30 minutes that I called but I also did not get
any Hi Temp warning. The
Hello all happy holidays (be it Xmas, Hanukah etc')
Please advise for best procedure to do RTTY with the K2.
I need info about the filters setup best way for audio interfacing inside the
rig.
Is direct audio-feed (Isolated from computer) to P1 pin 5 ok? any impedance
matching\ decoupling
Hi Tom,
I had my K2/100 driving an Alpha 87A at WP2Z for ARRL SSB test. The K2 got
quite hot and the fan ran a lot. But no ill effects other than keep your
hands off the cooling fins.
N2TK, Tony
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of Tom Althoff
I never had a problem, but remember to double-check the finals mounting
hardware.
NRE/COLE Test Center OH-3
pcarteratgcfn.org or wd8qwratarrl.net
Philip L. Carter, WD8QWR
[EMAIL PROTECTED]
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Greetings, Wayne and Eric -
I consider myself privileged to be one of first, if not the first, Ham to
build Tom Hammond's SMD PC Board CW Tuning Indicator kit for my KX1, using
the KX1 Lamp to perform double duty as both a light and a tuning lock
indicator as well (no holes to drill in the KX1
I build my K1 and K2 with accessories using a wooden table as workbench.
I take into account not to use clothes that are known to produce static.
I also has a grounded point that I touch now and then to be sure.
All projects went together without any builderrors or static zapps.
A wristwrap and
Hi
Several broadcaststations are testing Digital Radio Mondial a.o. Deutsche Welle
on 3995 kHz (yep allowed broadcastband in Region 1).
DRM uses 12 kHz wide audio to be decoded by software into digital audio.
A friend got it working op a TS-680? where he used a modified (wider) IF filter
op a
On Dec 1, 2004, at 20:26, Ron D'Eau Claire wrote:
Another US $15 or wo
will get you a static dissipative mat that provides further
protection.
For those who would like to save the last penny, may I recommend the
largish plastic bags used for wrapping computer mainboards as
antistatic
I am building an Elektor-Electronics DDS receiver with a 12KHz
bandwidth. It is RS232 controlled and covers 1-25MHz. The boards are
available mail order, and I have found all the components except thr 12
kHz Murata filter CFW455F and the Murata 470KHz ceramic resonator
CSN470, which is
I have made up the control board for my K2 and all looks good. The resistance
checks were all within specs except the U5 OUT to gnd which was about 3600
ohms. Checking further I find the 8R and 8T voltages seem OK but some 5 volt
areas are not. For instance the 0 volts and 5 volts on U7 pins
At 10:14 AM 12/1/2004, Tom Althoff wrote:
I did not get an answer in the 30 minutes that I called but I also did not get
any Hi Temp warning. The heatsink does get quite warm and with the 5:1 ratio
on TX heat vs RX cool off time I might have been exceeding Elecraft's concept
of intermittant
Tom, I've never installed any of the upgrades for my KPA100. I just
haven't seen the need for them here. I use a Mosley Pro 67B which tends
to have a somewhat higher SWR at the lower end of 40 (I set the antenna
for a compromise between CW and phone on 40) so I run the output of the
KPA100
Jerry,
If you have previously set up your CW filters and BFOs- do not change them
(unless you find you want to later on). Do initially set up the SSB filters
and BFOs as indicated - that will get you up and running, Then refine the
BFOs (and filter widths) to your tastes, remembering that
Earl,
I just scanned the manual and do not see any voltage checks to be done after
the Control Board is completed. Assuming you obtained the voltage readings
from the rear of the manual, those only correctly pertain to a fully
assembled K2. Some of the digital levels may be reversed until
On Wed, 1 Dec 2004 9:11 am, Eric Ward wrote:
I was interested in WA5ZNU's recent post about tri-state and side tone
levels on the KX1.
Eric,
My proposal requires hardware and firmware changes to the KX1 and was
somewhat telegraphic as it was aimed at Elecraft.
N6KR has I am sure already
Alas! I suppose the KX1 does not have a separate audio oscillator that you
can trigger in receive. I did this on my old OHR Spirit with a pushbutton
and one or two diodes. Works like a charm. But many other QRP rigs I guess
sample the transmitted signal. Wait! You said that it has a sidetone
(this is a resend to the list, the first was bounced by QTH.net because their
postmaster has some brain-dead SMTP spam checking misconfiguration which
produces false positives (for the subject line Circuit Specialists 701 rework
station:. Gr.)
About a week ago, Tom Hammond pointed out that
Walgreen's has a $1 offin-store coupon on 8 pack of AA's for the KX1
making them 18.99 until 1/1/05.
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Hey, gang!
A K2'er who isn't currently subscribed asked me to tell you about
Optivisor binocular magnifying visors available at an excellent price. He
wrote:
Mountain Heritage Crafters is having a sale on Optivisors. $35.95 with your
choice of lenses. Web site is www.mhc-online.com.
...thought
I was interested in WA5ZNU's recent post about tri-state and side tone
levels on the KX1. Can't claim to understand it completely-I am a lowly
biologist.
Anyway, I have been interested in building some version of a visual zero
beat detector that uses a PLL tone-decoder IC for use with the
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