[hpsdr] Hermes schematics

[Kjell Karlsen]

Hello.

Very fine job done by you all!!

One small miss I see is on the scheet: Hermes: Codec and IOs.

J10 MIC: Pin 1 shall be GND. Pin 2 to FL5. Pin 3 to FL4. (Ref:Drawing of  
Penelope: CODEC.)

73, Kjell LA2NI.






På Sun, 13 Sep 2009 13:27:36 +0200, skrev Phil Harman <phil at pharman.org>:

> ***** High Performance Software Defined Radio Discussion List *****
>
> All,
>
> As Kevin has recently advised, the schematic for Hermes is available for  
> peer review on the HPSDR Wiki here:
>
> < http://openhpsdr.org/wiki/index.php?title=HERMES >
>
> The preparation of the schematic has been a Herculean effort by  Tony  
> Taylor who is also about to design the PCB. I like to thank Tony for all  
> the work he has done to date and the effort he is about to undertake on  
> the PCB.
>
> Tony has been ably assisted by  Kevin M0KHZ and yours truly. I'd also  
> particularly like to reconise the contributions by Graham KE9H in  
> relation to the low power Tx stages, changes to the grounding of the  
> Mercury front end and his Exchalibur 10MHz clock driver.
>
> Hernes looks like it will be a most exciting HPSDR developemt having the  
> following features:
>
> - Single board DDC/DUC HF full duplex transceiver
> - Mercury type DDC receiver with 10dB NF and coverage of  10kHz to 55MHz
> - Multiple independant receivers (from the same antenna) - 4 currently  
> planed
> - Penelope type DUC transmitter with 0.5w output from 160m to 6m
> - USB2 interface to PC with new Windows and Linux DSP software (to be  
> announced)
> - Direct connection to Alex board HPF/LPF filters and Tx/Rx switching
> - Direct connection to an alternative LPF filter + 20W PA + Tx/Rx board  
> ( to be announced)
> - 13.5v DC input
> - All clocks phase coherent to a high performance 122.88MHz reference  
> oscillator
> - Option for external 10MHz reference
> - High capacity Altera 3C40 FPGA for current and future enhancements and  
> features
> - On board  Altera  USB Blaster clone for FPGA programming
>
> Hermes represents one of the most complex and feature rich HPSDR  
> projects we have so far tackled.
>
> You can make a valuable contribution to the success of Hermes by very  
> carefully checking the schematic on the Wiki.
>
> Feedback and comments are welcomed via the reflector.
>
> 73's Phil...VK6APH
>
>
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