David,
I'm also using System Workbench for my STM32F experiments.
73
Matt
VK5ZM
On 12 April 2017 at 15:08, Akshay Mishra wrote:
> System Workbench for STM32 (http://www.st.com/en/
> development-tools/sw4stm32.html
>
> usual eclipse woes but works otherwise.
>
> On 12
Bohdan you'll find David is currently working on a new 700 bps codec and
modem, with a focus to beat SSB performance with Digital Voice.
I'm sure that he'd welcome any assistance porting the 2400B mode to the
SM1000 platform.
73
Matthew
VK5ZM
On 14 February 2017 at 05:21, Yaremkiv Bogdan
Hi David,
Definitely an improvement between the Newamp modes and the 700B.
Intelligibility across all new modes was good, only minor artifacts like
"tings" and general "sounded heavily processed" was all that jumped out at
me. The Newamp modes seem to encode short vowels like "e" better, I found
David,
If you're going to use a diode mixer then terminating *is* important, for
your amusement/reading;
http://www.robkalmeijer.nl/techniek/electronica/radiotechniek/hambladen/qex/2001/05_06/page45/index.html
There are termination insensitive mixers to go with your termination
insensitive
>
>
> On 29/10/2015 10:42 AM, Matthew Cook wrote:
>
> David,
>
> Ok that's just a straight direct conversion receiver. As Helmut has said
> this is a different beast. The majority of your design decisions will be
> made in the analogue world.
>
> Here
David,
Ok that's just a straight direct conversion receiver. As Helmut has said
this is a different beast. The majority of your design decisions will be
made in the analogue world.
Here's a few good worked examples for you to look at, it doesn't matter
these are for HF the same rule applies
David,
Why can I see a discussion paper or magazine article entitled "do you know
your Eb/No?" *grin*.
73
Matthew
VK5ZM
On 24 September 2015 at 05:46, David Rowe wrote:
> Nice work on the power measurement Helmut :-)
>
> I wanted to say a little about 0dB SNR and below
David
>
> On 24/09/15 10:19, Matthew Cook wrote:
> > David,
> >
> > Why can I see a discussion paper or magazine article entitled "do you
> > know your Eb/No?" *grin*.
> >
> > 73
> >
> > Matthew
> > VK5ZM
> >
> > On 24 S
David,
Provided people understand the limitations of phantom power then you're
good. I have only implemented phantom power on transceiver cables that
have an A+ rail (13.8V@1A). The majority of transceivers seem to have an
8V@30mA rail for biasing eletret microphones, these should be avoided