[hpsdr] Overclocking a 130 MHz LCT2208 to 142 MHz - HPSDR on 4 meters?

[Henry Vredegoor]

Hello Vincenzo, All,

I think it would require some similar changes like for Mercury:

- Change the AD9744 DAC-clock to 12x12,88 =147,456 MHz.
   This is a 210 MSPS device, so I think this would not be a problem, 
not sure though, maybe there are other problems.
    Furthermore there is a 65 MHz (?) low-pass filter present that 
should be changed to >70.5  MHz (4m band assumed to go from 70 to 70.5 MHz.)

- Change the Penelope / Pennylane FPGA / DUC (Digital Up Converter) code 
to accommodate the new band

- Change PowerSDR/KISS code

But I hope others will chime in and can surely give better comments on 
the modifications which would be possible/necessary.

73's,

Henry - PA0HJA



On 1/27/2012 7:26 PM, Vincenzo Capuano wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
>
>
> What about Penelope/Pennylane, is there a way to modify it to transmit 
> on 70MHz ?
>
> 73,
> Vincenzo - IZ0RUS
>
>>
>> Hi Henry,
>>
>> You can speak with Gerd DJ8AY. He has installed a LTC2209 so his 
>> Mercury has Rx capability up to 98 MHz.
>> Anyone can order this Mercury to Gerd.
>
>
>
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