[hpsdr] Penny Power Control

[Jim Sanford]

Where is this mod documented and how can I tell if it's already done?

I AM running latest version of firmware on all boards.


New subject; I've been wanting to ask for a while.

When I connect HPSDR to computer running openhpsdrmrx, they are both on 
10.10.2.x network and work fine.  I'm thinking about putting HPSDR on my 
192.168.1.x  network, which I know will work. Here's the question:  How 
do I reach it from outside my home network?  I know how to tell my 
router to pass thru to a particular IP address with a port number, and I 
know how to use DYNDNS, etc., but *_/how to I tell openhpsdrmrx to look 
for a particular IP and port/_*?

Thanks and 73,

JIm

wb4gcs at amsat.org


On 10/17/2021 10:21, FRANCIS CARCIA wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>
> Hi All,
> Early Penny power control was DAC  digital bits. A later hardware 
> modification used a PWM output from the FPGA to
> generate a variable reference voltage to the DAC. This improved the TX 
> IMD by always using all the DAC bits at low power.
> The change is fairly simple if i remember. (An RC and a couple cuts/ 
> jumpers)   So if you are using older hardware you may not be able to 
> control the output power because the DAC reference is a fixed voltage.
> Frank WA1GFZ
>
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