On 9/15/2012 1:17 PM, Gedas wrote:
I don't know the answer to that but since you mentioned SWL, I just
have to say how pleased I was last night tuning around the various
SW bands around midnight. Set the 5000A to a nice wide BW, SAM, and
a set of high-fidelity bookshelf speakers was a real treat for me !
Sure sounds different from my ole SB-313 days 35 years ago.
Gedas, W8BYA
Gallery at http://gedas.cc
[...]
I agree that PowerSDR and my SDR-1000 together make a superb, high
fidelity HF receiver. Clean, super clean, with full frequency
response if the transmitting station, your audio amp, and speakers
are up to the task. The best!
There are some serious issues with Synchronous AM (SAM) reception,
though.
The SAM detector in 2.3.5 loses lock _way_ too easily. Perhaps this
is a result of listening to AM ham operators (I am one, too, so this
is not a criticism of them) who want quick lock-up on off-frequency
stations when operating break-in.
But the detector loses lock now in deep selective fades and tries to
lock up on the strongest audio sideband component. It does the same
on DSBRC and SSBRC (like WBCQ runs) all the time. So, because of its
current "easy lock and unlock" parameters, it fails to do one of the
main things that a SAM detector should do: keep locked during fades,
selective fades, and reduced carrier reception.
So I second (or third) the motion to create a user selection that
will not allow the SAM detector to unlock so easily, and also an
option to _not lock at all_ on carriers more than, say, 40 Hz from
center.
With my best,
Kevin, WB4AIO.
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