[seqpg] Re: CTCSS circuit

  • From: "VK4FAQ - PK" <vk4faq@xxxxxxxxxxxx>
  • To: <seqpg@xxxxxxxxxxxxx>
  • Date: Tue, 27 Jan 2009 21:51:35 +1000

HI Rod,

If you are interested, I found a few more variations of circuit designs for the 
same idea.

Another timer chip Version - http://www.vk2bv.org/w_ctcss.htm 
http://www.vk2bv.org/p_fig2a.gif

OpAmp Version - http://www.fenlandrepeater.org.uk/ctcss.htm

MX315 Version - http://www.com-spec.com/selectone/manual/st_133b.pdf

12C508 Version - http://members.optushome.com.au/vk3biz/ctcss-tones.html

16F84A Version - http://users.picknowl.com.au/~wavetel/pic.htm

Cheers PK, VK4FAQ.
  ----- Original Message ----- 
  From: VK4UTE 
  To: seqpg@xxxxxxxxxxxxx 
  Sent: Tuesday, January 27, 2009 2:38 PM
  Subject: [seqpg] CTCSS circuit


  Thanks Simon
  From not being to locate any easy design, to finding  three....

  Rod
  VK4UTE


  ----- Original Message ----- 
  From: "Simon Chantrill" <vk4tsc@xxxxxxxxxxxxxxx>
  To: <seqpg@xxxxxxxxxxxxx>
  Sent: Monday, January 26, 2009 12:06 PM
  Subject: [seqpg] CTCSS circuit (link from SCARCNEWS)


  > Hi all,
  >    I hope this is going to work, being my first post.
  > 
  > http://www.qsl.net/sv1bsx/Subtone/Subtone.html
  > 
  > Regards,
  > Simon vk4tsc
  > 
  > 

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