[hpsdr] New HPSDR card for VHF/UHF ?

[Phil Harman]

Hi Shel,

With a 14bit DAC the best we can expect is a S/N of about 85dB - OK for an HF Tx but not good enough for a receiver LO I suggest.

73's Phil...VK6APH 

  ----- Original Message ----- 
  From: ct1izu 
  To: hpsdr at openhpsdr.org 
  Sent: Monday, September 06, 2010 8:45 PM
  Subject: Re: [hpsdr] New HPSDR card for VHF/UHF ?


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  Looks like things have moved along a bit. The latest Kuhne 2mtr  transverters use a  high-level triple-balanced GaAs-FET ring mixer with an IP3 of >35 dBm.
  I cant find any links to gas fet rings, anybody any suggestions???

  Of course all this assumes that the tx 14bit  DAC is clean enough for the LO ???

  Shel CT1IZU

    ----- Original Message ----- 
    From: Tim O'Rourke 
    To: ct1izu 
    Sent: Monday, September 06, 2010 12:55 PM
    Subject: Re: [hpsdr] New HPSDR card for VHF/UHF ?


    I use the Kuhne xverters as they are robust and I assume being from Germany they can handle the EU contests. 
    Only down side is that they are pricey.
    Tim W4YN



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