Darrell Bellerive wrote:
Please expand on this. I have never used a PSK application, but how would it
detect the subcarrier is exactly at 100 Hz? I suspect the software is using
the soundcard clock as a reference and that wouldn't necessarily be very
accurate.
... but it'll be within a few
Guy's...
Hello again to one-an-all, after a very long absense from the list, and
things in general due to many matters,..
I'm glad to say for the meantime..I am back..!
I've just started construction on the CP1 Dual Directional Coupler as a
piece of test equipment here in the
newly re-vamped
On Thu, 20 Apr 2006 20:26:24 +0100
Dave [EMAIL PROTECTED] wrote:
Bob
The 8R line can be held on a little longer with the hold command in the
menu, if you wish to use the 8R line with either an opto-isolator or a relay,
I've got both circuits on my boat anchor with a K2 article at:
Darrell,
Since the limit of tuning precision for the K2 is 10 Hz, there is no benefit
to be derived by attempting to tune WWV or other standard frequency station
to less than 10 Hz - and that is well within the error range presented by a
computer soundcard. In other words, even if the error in
I use a Beta of 95 and a decay of 30 for CW mode. The decay is reduced to 07
for SSB phone mode. The denoiser level is increased from 1 to 4 as needed
while listening to the signal and noise level of the RX. These are values
close to those reported by others in previously made comments.
I
Byron, I believe Diode D10 on the RF Board would prevent the battery from
discharging out through the Power Connector J3. For example, one cannot
measure the battery voltage at the power connector. This diode blocks
current flow in that direction. Additionally, the charging circuit for the
Folks,
This message was just posted on the Ten-Tec reflector. Many of you
probably knew Paul. Sorry to bring bad news.
Pat-K4BEH
---
It is with sadness that I report the passing of
Paul Valko, W8KC, a member of this list and
host to
Has anyone had any experience with the Tokyo Hy-Power amps, particularly the
HL-200Bdx or HL-100Bdx models?
73,
Bill Allen - WA5PB
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G'day,
snip
Has anyone had any experience with the Tokyo Hy-Power amps,
particularly the HL-200Bdx or HL-100Bdx models?
73,
Bill Allen - WA5PB
snip
On the subject of amps, what news the Elecraft QRO linears. They've
been a long time brewing. I could just go over to the dark side.
On
Hi Mike,
We officially previewed the amplifiers this weekend in our booth at the
Visalia DX convention and prior to that we were not able to answer all
of the emails we were being flooded with. (I just got back into the
office today.)
We previewed working units of the KPA800 (800W) and
Thanks Nick and Don for the explanation of the accuracy of the soundcards and
K2 sidetone.
On April 24, 2006 11:40 pm, Nick Waterman wrote:
... but it'll be within a few percent, surely, and that means you'll be
within a few hertz of 100Hz? The K2 tuning steps are likely to be a lot
bigger
In addition to the inevitable drift in tunable oscillators, there is the
accuracy (resolution is a more common term) of the Digital-to-Analog
Converters (DACs) used in the K2 logic.
During CAL PLL and CAL FIL, the DACs must 'read' the analog tuning voltages
used to set the oscillators on
Ron D'Eau Claire wrote:
Many folks new to the K2 don't realize that what they see
on the frequency display is NOT the actual frequency. It's
the requested frequency chosen by either punching in a
frequency on the keypad or turning the dial.
So ... running my K2 is like flying an F-16 or
Another listers power control problem makes me think. I have just finished
my K2 (#5296). I noticed that when set the power control to 2.0W I measured
1.7 to 2.2 on an external wattmeter. This level changed each keying of the
transmitter but stayed between these readings. Is this normal? My output
There are three different signals on WWV 100, 400 500 Hz. I assumed
that if those signals had the proper relative frequencies that all I
had to do was check the absolute frequency. The Elecraft 2T-gen fit
that requirement with its two frequencies of 700 1900 Hz.
I prefer the PSK31 waterfall
My experience is the same as yours. I assumed that it was normal,
I'm now watching for other comments.
On Tue, 25 Apr 2006 16:15:38 -0400, Richard Kent [EMAIL PROTECTED]
wrote:
Another listers power control problem makes me think. I have just finished
my K2 (#5296). I noticed that when set the
Matt,
No 400 Hz tones are transmitted by WWV - you may want to check their format
webpage for full information, but the tones are 500 and 600 Hz on alternate
minutes with 440 Hz being transmitted the 2nd minute after the hour except
that the 440 Hz tone is omitted during the first hour of each
Mike Harris wrote:
On the subject of amps, what news the Elecraft QRO linears. They've
been a long time brewing. I could just go over to the dark side.
I saw both the KPA800 and KPA1500 at Visalia this weekend. They are not
taking orders yet, pending FCC certification. Elecraft said
Have pictures of the Elecraft amps been posted anywhere??
73, Joe W2KJ
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Fred, K6DGW wrote:
So ... running my K2 is like flying an F-16 or F-117A. I don't actually
control the aircraft or radio, I request the computer to control it
for me and hope it is listening?
---
Right, Fred, but notice that's what you did with your SX-28 too! You
In a message dated 4/25/06 7:12:19 PM Eastern Daylight Time,
[EMAIL PROTECTED] writes:
Fred, K6DGW wrote:
So ... running my K2 is like flying an F-16 or F-117A. I don't actually
control the aircraft or radio, I request the computer to control it
for me and hope it is listening?
I made the first contact tonight using my new K2. It worked perfectly just as
I had expected. So I now have two K2s and only room for one of them. I going
to offer the new K2 for sale. It is the basic K2 serial number 5439. I have
added the headers and front panel parts for the SSB option,
Ron D'Eau Claire wrote:
Right, Fred, but notice that's what you did with your SX-28
too! You turned the dial to make a frequency mark line up
with the indicator. That was requesting a frequency.
Well, I was just sort of reflecting on our world. Wilbur and Orville
would be astounded.
With all this talk about calibration, I thought I'd go through the procedure
again just to check and see how ole #337 was doing. I don't remember
exactly when I last calibrated it, but it has to be over a year, perhaps
over two. She was 10 hz low at 10.0 Mhz checked against WWV. Didn't have
to
On Tue, 25 Apr 2006, EricJ wrote:
And the K1 is all the better for it too with the silkiest tuning of the
bunch.
I'm also mystified by the compulsion to measure operating frequency on a ham
BAND to a few Hz.
It would be useful for another thing I've never understoodthe exact resonant
On Tue, 25 Apr 2006 09:50:55 -0700, Darrell Bellerive wrote:
Then again, WWV
is only accurate as received to +/- 1Hz (1 part in 10 million).
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On Tue, 25 Apr 2006 09:50:55 -0700, Darrell Bellerive wrote:
Then again, WWV
is only accurate as received to +/- 1Hz (1 part in 10 million).
After using systems having timebases slaved to rubidium and cesium
standards (atomic clocks) where expected stability and accuracy is
1 part in
An interresting assortment but not the one I use. I've been running Red
Hat Linux (currently Red Hat Enterprise Linux 4 Workstation) for a
number of years and the program that I use for soundcard interface
programs is gmfsk. It not only does PSK-31 but a host of other
protocols. I use tlf
Fred, K6DGW, wrote:
Mine seems to drift about 450 Hz from cold-start to scheduled QSO time,
over maybe 30 mins which is great as far as I'm concerned.
---
Is that your K2 that drifts that much or the SX-28? I can imagine the SX-28,
but the K2 should not drift more than perhaps
Jim N2EY wrote:
With the SX-28 or similar receiver, you actually adjusted the LC tuned
circuits and other parameters yourself. You didn't request anything - you
changed
the parameters directly.
-
My point is that the dial mechanism is a simple form of mechanical
This morning I was listening to my KX1 on 80-meters on an approximately 5/8
wavelength wire I recently put up, with an L-network tuner at its end, then
coax ran into the house. Just out of curiosity, I decided to go through the
other bands and see what the KXAT1 would do, trying to get a match
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