[hpsdr] Automatic Tuner Unit

[Glenn Thomas]

Available commercial products in this area are already pretty good and 
easily interfaced. For example, something like the LDG Z100 
http://www.ldgelectronics.com/c/252/products/7/8/1 (MFJ & others have 
similar products) handles up to 125 watts between 1.8 and 54 MHz. The 
interface is easy - a contact closure to initiate a tune cycle and a 
single LED to tap off to indicate tune completion.

What do you want your ATU to do that the commercial product doesn't? 
This is a question that needs to be addressed before embarking on an 
HPSDR-style ATU development. If the answer to the question is "nothing", 
then an HPSDR ATU development will consume time and talent that would be 
better spent on a different project. For example, designing and building 
an "open source" FPGA would be a fun challenge, why bother when the 
commercial product is available so inexpensively?

On the other hand, if there is desirable ATU functionality that is not 
available commercially, bring it up here for discussion! If it doesn't 
lead to inclusion in a commercial ATU, it will provide the basis for an 
HPSDR ATU project...

73 de Glenn wb6w


On 9/14/2012 8:58 AM, Aivars Straupe wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Look here:
>   http://openhpsdr.org/wiki/index.php?title=Apollo_-_Development_Discussion
>   There is ATU, but I'm not sure about development level and max power. I would like to add
> ATU to Hermes, (any) 100W PA and Alex.But there are not so much about that.
>   May be anybody could tell to us about it, if there any plans? Anyway, there are
> other constructions around,just about betterconnection with our software and hardware ;-)
>
>   73!!!                                                                                    Aivars.
>
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