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Re: sBitx doubt


 

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Actually , Farhan had forgotten to update the Schematic on his GithHub page, as a result of which I was searching for a route from the Antenna Connector to the RF port he used.

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But some pledger privileges came to the rescue and I found the right schematic.

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I hope the schematic on the Github is updated.

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I am building a very limited portion of the design. The Exciter and the RPi HAT.

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I attach herewith my version of the schematic for all reference. This is going to be a TH version of the project, with 1/8W resistors

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regards

charudatt ¨C VU2UPX

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From: [email protected] <[email protected]> On Behalf Of Pascal Nguyen
Sent: 03 August 2022 01:09
To: [email protected]
Subject: Re: [BITX20] sBitx doubt

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Hi Charu
Looking forward to see your design, must be very interesting by rolling your own.

  • What¡¯s ?the catch between the schematic from GitHub (1rst mixer to antenna via LPF) and the updated from Raj (1rst mixer to antenna bypassing LPF)?
  • Do we need a band pass filter for the 1st RX mixer or a single 30MHz LPF is good enough?
  • Has any one successfully booted an RPI 400 (identical to RPI4 without EEPROM) or it¡¯s not compatible?

73 Pascal

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