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<div class="moz-cite-prefix">On 10/24/2015 9:18 PM, Terry N4TLF
wrote:<br>
</div>
<br>
<blockquote cite="mid:A7CC7565D62A42DB9B644E6B09934590@tfoxserver3"
type="cite">
<pre wrap=""><i>Congratulations Alberto!
Your ARM Radio is an exciting project. I'm glad you were able to hear SAQ
with it. I'm trying to figure out what type of box to put mine in, and what
type of LF preamp I should include. I may not always use it with an active
antenna.
I also would like to see what the next version of the STM32F4 discovery
boards will be able to do!
73, Terry, N4TLF</i>
</pre>
</blockquote>
<br>
Thanks Terry,<br>
<br>
the mini-whip active antenna is a very good piece of hardware.
For example, when used with my<br>
Icom ICR-75 to receive the time-frequency standard DCF77 from
Germany, it produces an S9<br>
reading on the S-meter. In any case a preamplifier for a more
general use IMHO is absolutely needed,<br>
as the ADC of the ARM chip doesn't have an especially high ENOB, and
the sensitivity is affected<br>
from this.<br>
<br>
A friend of mine promised me that he would lend me one of the new M7
Discovery boards. If/when<br>
he will do that, maybe I will try to port my project to it. I reckon
that the biggest effort would be needed<br>
for the graphical part, as the display is different, so all the
relevant code must be massaged a bit.<br>
STM says that the M7 is code compatible with the M4F, so all the DSP
part should need just minimal<br>
retouches, if any.<br>
<br>
73 Alberto I2PHD<br>
<br>
<br>
<br>
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