[hpsdr] Hermes schematics

[Kevin Wheatley]

Well spotted Kjell :) This will be changed on the next revision...
73's
Kevin

On 13 Sep 2009, at 13:54, Kjell Karlsen wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> 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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>
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