Author Topic: BITX11 27MHz SSB,Current issue in 100Watts THAI magazine  (Read 2454 times)

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Offline E21qJU

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BITX11 27MHz SSB,Current issue in 100Watts THAI magazine
« on: December 06, 2012, 05:04:32 PM »
  I was design Phase lock loop,Crystal ladder filter, Band pass filter and PCB for  BITX11, 27MHz SSB .
There are current issued on 100Watts magazine and next chapter is issue on Feb Y13.

  I have good design results.

  

                                  PCB design
                                

        Phase lock loop PCB
        

DSB Modulation with 1KHZ Tone



USB  filter output by Crystal ladder filter


Matching with lumped circuit before Impedance tune,ladder filter have 138 Ohm _+J0



Low Ripple ladder filter Design -3dB @ 3KHz




Band Pass Filter



Band Pass Filter SWR.



Frequency respond which low insertion loos

« Last Edit: December 06, 2012, 07:37:32 PM by E21qJU »

Offline E21qJU

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Re: BITX11 27MHz SSB,Current issue in 100Watts magazine
« Reply #1 on: December 06, 2012, 05:16:51 PM »
 อ้อลืมไปฝารั้งอ่านภาษาไทยไม่ได้ ;D
« Last Edit: December 06, 2012, 05:23:03 PM by E21qJU »