[hpsdr] New kind of Hermes

[AA8K73 GMail]

*rant on*
IMO

I agree Brian.

Witness ARRL CEO K1ZZ lobbying for a 2.8 kHz bandwidth limit for 
HF digital transmissions.  Great for half-century old radios.

Or, let's go back a full century.  Look at the inordinate amount 
of effort spent re-writing and re-writing code, altering design, 
and creating special cases for HPSDR CW transmitting; all 
because someone wants to hear another station between the dots 
of his own transmission.  Sure, it is a technical challenge, but 
so are new digital modes that we haven't started using yet.

I was fortunate to enter ham radio when SSB was new and only 
used in small parts of the "phone" band.  I sold my CW/AM 
transmitter and bought a Central-Electronics 10-A phasing SSB 
transmitter with 10 Watts PEP.  Now I'm pleased when someone 
across the ocean hears my barefoot Penelope on WSPR.  What could 
we do with a Chirp transmitter that spanned the 7 kHz VLF band? 
  Old things are fun and comfortable, but new things are exciting!

*rant off*


AA8K
On 14-05-07 06:07 PM, Brian Lloyd wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>
>
> Well, as long as I started on this outline of What Should Be, I
> should probably throw in a couple other systems concepts that
> occur to me.
>
> One of the very first things is that hams have to relinquish
> their love-affair with the Collins KWM-2. For something like 60
> years we have been building variations of the KWM-2 and nothing
> has changed appreciably. Most transceivers you see today are
> STILL a variation of the KWM-2. Even PowerSDR is a glorified
> copy of the KWM-2. Basically the KWM-2 downconverts a "channel",
> usually on the order of 3kHz wide, to baseband. It also
> upconverts from baseband to someplace in the HF spectrum. So we
> have this one-3kHz-wide-channel mindset/view of the world.

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