If you didn't forget to turn your agc OFF
The big unknown here would be the signal from your signal source. A
lot of signal sources to calibrate frequency and level are also not
narrow if you start looking down below. Having phasing, 120 Hz
artifacts (particularly if you powered a signal
The overload may not be the fault of the SDR-1000 setup at all.
Having worried with cross-station interference at multi-transmitter
contesting stations for 40+ years, just about anything can be driving
even the best of devices to fits.
A small list, hardly complete, that I have encountered, a
- Original Message -
From: Alex, VE3NEA [EMAIL PROTECTED]
The noise-driven, non-inertial AGC is especially useful in the
situations
when the DX operator is working simplex and several strong stations
are
calling him on his frequency, since the weak signals can be heard
between
In Europe, in SSB contests and for certain kinds of DX SSB operation
on 40m, the station will listen BOTH on his transmitting frequency and
on a QSX frequency, often up 200 or 250 kHz, usually blending the
audio. This is quite easy with current Ten-tec, Yaesu, etc
transceivers.
Will/does the
Shaping and delaying the CW waveform in the PC or a slave device is
clearly the way to go. It is not a stretch of coding possibilities,
when using an SDR1000/amp combination, to (pre)shape the CW waveform
to cancel out whatever distortion is in the SDR1000/amp and transmit a
pristine CW signal
2. I think this is the 'wrong' iambic from the one I'm used to. I
really cannot get the hang of it...
Of all the things that should be child's play and totally configurable
in a software defined radio, one would think generating CW, keyer
memories, yada, yada.
As should be configurable
Would the narrow range encompass a listening bandwidth of say 500 Hz
on CW?
-- Guy
- Original Message -
From: Eric Wachsmann [EMAIL PROTECTED]
To: 'Lee A Crocker' [EMAIL PROTECTED]; 'Flexradio'
FlexRadio@flex-radio.biz
Sent: Friday, September 15, 2006 9:47 AM
Subject: Re: [Flexradio]
Measuring simply by viewing them on an oscilloscope presentation, a
string of dits generated by keyers and logging programs set to 30
wpm generates dits about 40ms and spaces of 40ms.
Using the 50 dits per word to mean 50 sent dits plus 50 dit lengths of
space, 30 wpm would be 30 x 50 = 1500
What amplifier are you using?
Guy.
- Original Message -
From: [EMAIL PROTECTED]
To: John L Merrill [EMAIL PROTECTED]
Cc: 'FlexRadio' flexradio@flex-radio.biz
Sent: Tuesday, July 04, 2006 10:45 AM
Subject: SPAM:(L1) Re: [Flexradio] Amp Keying
This only happens when the sdr is
It would be helpful if someone could tell me about the degree that an
image comes through in a properly adjusted SDR1000 setup? The
following is an entirely plausible situation at an existing contest
station.
40m, listening on 5 ele quad to NE suspended from and spaced across
170' of
Experience from use of existing radios...
The FT1000MP for CW has a bucket brigade delay for CW that can be set
to x milliseconds between 0 and 30. When the key is hit, if assert
transmit state to the amplifier is not already on, it is asserted
immediately. The actual CW power is delayed for x
Of all the setups sensitive to RF in the shack (aka
grounding/shielding problems), perhaps an SDR is most sensitive. One
real marker is that it happens on 10 meters, where grounding
insufficiencies will be most apparent.
We lost the shield connection on an in-station 20m coax connector in a
How can SDR make use of dual core processors, which are becoming quite
affordable?
So far the SDR has been modeled after a transceiver, which transitions
back and forth from RX to TX and back. Much is lost in the
transitions.
The original model was separate TX and RX, but SDR should be able
Whether or not they achieve the patent may be problematic, but likely
of little consequence. When single sideband was first coming out, the
modulation methods used were quickly seen as a way to produce double
sideband, with the carrier reduced only to that point which would
still allow
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