Paul_dbnut

System telemetry is as old as spaceflight, probably older. Surely the low-bandwidth data involved could be multiplexed onto any data channel, or on a special admin-only dedicated channel?

Given the low cost of sensors, some key electrical parameters would seem to be a worthwhile fit. For a few dollars more, we could have temperatures (multiple), pressure & humidity too - not a bad idea for any kind of equipment mounted outside the normal domestic environment, or even within.

@Bjarne "I am surely a minority in that respect!"

IMHO apart from top-flight DXers such as yourself, there are plenty of dabblers like me who just love to play with these fancy tools 😁.

Mr John!!! You are a star!!! 😂

I came back to the Kiwi forum after six-plus months away, and what do I find? You have resurrected a 70-year-old forgotten/ignored technique I've been trying (unsuccessfully) to promote for over a year. And longed to experience since reading about it in my teens, 60 years ago!

Your "SAS", or something apparently equivalent. Coherent lower/upper sidebands demodulated and presented to left/right ears.

This was often referred to as "binaural" in the literature, but that's a term hijacked for two other different audio techniques in the last 20 years or so. Now I think of it as "sideband binaural".

For me, the brilliance of SAS is primarily in spreading all the (non-coherent) noise across the sound stage, leaving the wanted channel centred and allowing the brain to focus via the "cocktail party effect". Adjacent channel interference tends to come from the sides as well.

A more subtle benefit is often found for co-channel stations with small carrier offsets from nominal. The tiniest spatial separation is enough to improve aural discrimination so much more effectively than with plain AM or even SAM. Sometimes even much weaker stations can be resolved.

In my opinion this is an indispensable tool for serious DXing. I hope many other listeners are going to explore and enjoy its capabilities - and the word gets around to other potential customers.

If you've researched the topic you will know that KiwiSDR is unique. Binaural sideband AFAIK has never been implemented in analogue radios. And NO OTHER SDR program offers this feature. The couple that provide a "BIN" or pseudo-stereo function do something completely different, completely missing the potential achieved by Kiwi. There MAY have been just one SDR going down the same track, but that looks like a dead donkey now.

I'm very curious to find out how you implemented this (I did it with Hilbert) and have a couple of ideas arising from my experiments. Don't know if you feel like chatting?

Thanks to Ken for his post that directed me here, and to you for having the inspiration and making the effort to provide it.

All the best

Paul