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Re: [softrock40] Re: RXTX Ensemble, lots of headaches / faulty board

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  • Sid Boyce
    A word of caution. You need SOIC parts. I have ordered some FST3257 s only to receive parts with a smaller footprint SOIP. For FST3253 I ordered from Hong Kong
    Message 1 of 32 , Nov 2, 2012
      A word of caution.
      You need SOIC parts.
      I have ordered some FST3257's only to receive parts with a smaller footprint SOIP.

      For FST3253 I ordered from Hong Kong and we had to exchange a number of emails to ensure they were the correct form factor, the mistake above loomed large and I had to email a picture and point to the part on Digikey.

      I recently got some 74CBT3257's from RS Components this week to replace a FST3257 on a UHFSDR, resulting in a noise floor of -60dBm and no signal.
      73 ... Sid.
       
      On 02/11/12 08:12, John wrote:
       

      RS Components have the Texas version CBT3253 stock number 663-1723
       
      Farnell also CBT3253 stock number 1750447
       
      Farnell are cheaper price.
       
      John G3UGY


      -- 
      Sid Boyce ... Hamradio License G3VBV, Licensed Private Pilot
      Emeritus IBM/Amdahl Mainframes and Sun/Fujitsu Servers Tech Support
      Senior Staff Specialist, Cricket Coach
      Microsoft Windows Free Zone - Linux used for all Computing Tasks
      
    • Chris Stake
      Ok, at least it proves I was paying attention. :-) Chris From: softrock40@yahoogroups.com [mailto:softrock40@yahoogroups.com] On Behalf Of jess_flyin_high
      Message 32 of 32 , Nov 3, 2012

        Ok, at least it proves I was paying attention. :-)

         

        Chris

         

         

         

        From: softrock40@yahoogroups.com [mailto:softrock40@yahoogroups.com] On Behalf Of jess_flyin_high
        Sent: 03 November 2012 03:38
        To: softrock40@yahoogroups.com
        Subject: [softrock40] Re: RXTX Ensemble, lots of headaches / faulty board

         

         

        The whisker you can see in the pic is a result of me leaning over the board to take the picture a couple of hours after having my hair cut

        Jess

        --- In softrock40@yahoogroups.com, "Chris Stake" <stake@...> wrote:
        >
        > What's that filament on the PCB which encircles the legend for R28 on your
        > picture? Could it be a whisker of wire? Is that the culprit?
        >
        > Chris

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