Why in this day and age they don't use fiber optics like TOSlink to
distribute their audio is beyond me. A handful of chips and a
soldering iron, and lots of their problems go away, even when you
take into account that they are using AFSK (most of us know how to
put out a clean AFSK signal).
They don't even need fiber. A good transformer and attenuator right
at the modulator input of those Icom rigs with balanced high level
audio distribution would do the job.
> If they convert to using simple inexpensive SDR as exciters instead
> of those Icom boatanchors, they can also distribute clean IQ data
> using Ethernet.
Ah but Flex will not donate a dozen transmitters like Icom <G>.
73,
... Joe, W4TV
On 2014-06-05 1:48 PM, Kok Chen wrote:
On Jun 5, 2014, at 8:53 AM, W0MU Mike Fatchett wrote:
The ARRL being the largest CLUB in the world can't find operators
to man their station. Seems odd to me.
They do ask for assistance from their members, Mike.
From time to time, I have been asked by the (paid) W1AW operator to
help monitor his signals for purity (probably after someone else
complains) since I have the right equipment to do it.
They have a nightmare setup, trying to distribute audio over multiple
transceivers. Look behind the flashy vernier of their audio control
panel that they show the tourists and you find all sorts of ground
noise potential. Why in this day and age they don't use fiber optics
like TOSlink to distribute their audio is beyond me. A handful of
chips and a soldering iron, and lots of their problems go away, even
when you take into account that they are using AFSK (most of us know
how to put out a clean AFSK signal).
On any given day, you will find some dirty W1AW signals on one band
or the other.
If they convert to using simple inexpensive SDR as exciters instead
of those Icom boatanchors, they can also distribute clean IQ data
using Ethernet.
When asked, I usually try to help, but I do not go watch their daily
transmissions otherwise (certainly not after they dropped SITOR/Amtor
FEC -- W1AW used to be good for testing demodulators and decoders for
that mode; it was also the most reliable transmission from W1AW).
73 Chen, W7AY
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