>>> "put on his smoking jacket and slippers, sit back
in his favorite armchair " <<<
Smoking Jacket. Ut-oh - not politically correct these
days. Now hey're called them "Cancer coats" - I think.
;-)
joking - AM is something less without DSB and a
carrier imo...
[Elecraft] K3 FM filter required for full AM receive
width
Bill W5WVO w5wvo at cybermesa.net
Tue May 6 17:11:20 EDT 2008
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full AM receive width
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full AM receive width
Vic K2VCO wrote:
> Stewart Baker wrote:
>
>> Now I know that it is worth making even a fairly
loose LC filter
>> just for occasional AM reception.
>
> Keep in mind that you can copy AM stations quite
well in SSB mode by
> zero-beating the carrier and choosing the better
sideband (some SWBC
> stations seem to transmit only one sideband plus
carrier).
>
> I'm not suggesting that this provides high-fidelity
reception, but it
> is surprisingly good, especially for speech.
I'm becoming increasingly amused by this
back-and-forth about AM short-wave
broadcast reception and what is "right" in terms of
receiver performance. As
an SWL for nearly 50 years, let me put this in
perspective by asserting that
there are two kinds of short-wave listeners:
There is the guy (if a ham, he is probably a DXer) who
wants to dig out that
weak, garbled signal from some obscure African
republic that is hiding 5 kHz
from (and about 60 dB below) 40-over-S9 Radio
Nederland.
And then there is the guy (if a ham, he is probably a
rag-chewer) who wants to
put on his smoking jacket and slippers, sit back in
his favorite armchair with
a pipe and a snifter of brandy, and actually LISTEN to
Radio Nederland.
I have great affinity for both these approaches to
SWLing! No need to argue
about it. :-) They do require two entirely different
and fundamentally
incompatible approaches to receiver design and
performance. If you can embody
both approaches in one receiver by providing adequate
configuration options,
so much the better. That's one of the things I'm
really looking forward to in
the K3 once the AM options are completely fleshed out.
Bill W5WVO
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