Hello Samuel,
I just wondering best way to get really sensitive comms, so a 5W HT
could go for miles and miles.
The Wenet project shows what can be done with careful engineering of the
modem, e.g. sending HD images at 100 kbit/s @ 50mW over 100km:
http://www.rowetel.com/?p=5344
The key
then (later in the receive chain) apply error correction to said
>
> > symbols.
>
> >
>
> > It’s outside the scope of this list, but I’ve been working on a related
> idea
>
> > using the ADF7021 transceiver chip. I’d be happy to chat with you about
> it,
>
: [Freetel-codec2] Ultra-reliable sensitive comms
Hi,
Channel coding will improve performance, depending on the type of code
used. For example, in QRadioLink I use a rate 1/2 convolutional code,
which leads to twice the symbol rate. This gives me an improvement of
3 dB over no code/half symbol rate mode
t
> Sent: Saturday, December 2, 2017 10:35 AM
> To: freetel-codec2@lists.sourceforge.net
> Subject: [Freetel-codec2] Ultra-reliable sensitive comms
>
> I am hoping there will be some people on this list far more experienced
> than me to be able to advise on this!
>
> Am playing
to email me.
Nino Carrillo
KK4HEJ
kk4...@gmail.com
From: Samuel Hunt
Sent: Saturday, December 2, 2017 10:35 AM
To: freetel-codec2@lists.sourceforge.net
Subject: [Freetel-codec2] Ultra-reliable sensitive comms
I am hoping there will be some people on this list far more experienced
than me
I am hoping there will be some people on this list far more experienced
than me to be able to advise on this!
Am playing with VHF voice, etc, and I am thinking what is the best way
to get ultra-reliable (super-sensitive) performance on a VHF modem.
I am thinking for VHF, based on a radio
