[App_rpt-users] SA-828U 'COR'

Wed Oct 7 13:26:29 UTC 2015

Wow I was looking for that info for some project I am working on.. 

You never know where some of the info you need will be poping out from 

From: Steve Zingman 
Sent: Tuesday, October 06, 2015 11:17 AM
To: Steven Donegan 
Cc: app_rpt-users at ohnosec.org 
Subject: [App_rpt-users] SA-828U 'COR'

I can confirm the 828 has the second harmonic on my IFR 1200S
For RUS you want pin 1 of the MIX2009 audio chip. (under the shield)

On 10/6/2015 9:30 AM, Steven Donegan wrote:

  Other than using a Pi 2, and the newer/cleaner 828 module, Doug's setup based on the 818 module is exactly what I will be trying. Thanks for the info!

  Steven Donegan
  KK6IVC General Class FCC License
  Silver State Car #86
  www.sscc.us

------------------------------------------------------------------------------
  From: Steve Zingman mailto:szingman at msgstor.com
  To: Steven Donegan mailto:donegan at donegan.org 
  Cc: mailto:app_rpt-users at ohnosec.org mailto:app_rpt-users at ohnosec.org 
  Sent: Tuesday, October 6, 2015 6:17 AM
  Subject: Audio detection circuit to generate 'COR'

  Steve,
  Be aware that those transmitters are dirty.
  There is a note about a module using the same RF circuit on Doug's HAMVIOP site.
  He suggests a filter. REQUIRED if you are going to drive a amp or even connect it to a antenna!

  73, Steve N4IRS

  On 10/6/2015 9:13 AM, Steven Donegan wrote:

    Thanks. For my first full duplex repeater (for test/learning purposes) I am going with 2 of those modules and a 6 cavity duplexor (likely of the 'notch' variety). If it works out may put my Mirage BD-35 on the TX side before the duplexor and get ~16 watts for giggles.

    Steven Donegan
    KK6IVC General Class FCC License
    Silver State Car #86
    www.sscc.us

----------------------------------------------------------------------------
    From: Steve Zingman mailto:szingman at msgstor.com
    To: Steven Donegan mailto:donegan at donegan.org 
    Sent: Tuesday, October 6, 2015 6:10 AM
    Subject: Re: Audio detection circuit to generate 'COR'

    I'll send you the info tonight when I get home. I have a couple of them.

    On 10/6/2015 9:10 AM, Steven Donegan wrote:

      Thanks Steve! I'll look into that as well.

      Steven Donegan
      KK6IVC General Class FCC License
      Silver State Car #86
      www.sscc.us

--------------------------------------------------------------------------
      From: Steve Zingman mailto:szingman at msgstor.com
      To: Steven Donegan mailto:donegan at donegan.org; mailto:app_rpt-users at ohnosec.org mailto:app_rpt-users at ohnosec.org 
      Cc: mailto:app_rpt-users at ohnosec.org mailto:app_rpt-users at ohnosec.org 
      Sent: Tuesday, October 6, 2015 6:06 AM
      Subject: Audio detection circuit to generate 'COR'

      Steve COR or actually RUS "Receiver Un Squelch" is available in that radio. You have to unsolder the shield to get to it.

      73, Steve 

      On 10/6/2015 8:56 AM, Steven Donegan wrote:

        Well, it is a generic question - any radio without COR. The specific model in my case is a UHF radio module model # SA-828U: http://www.alibaba.com/product-detail/1W-5km-distance-SA828-U-uhf_60092524887.html?spm=a2700.7724857.29.62.Xbg6c5

        Steven Donegan
        KK6IVC General Class FCC License
        Silver State Car #86
        www.sscc.us

------------------------------------------------------------------------
        From: Skyler Fennell mailto:electricity440 at gmail.com
        To: Steven Donegan mailto:donegan at donegan.org 
        Cc: app_rpt-users at ohnosec.org 
        Sent: Tuesday, October 6, 2015 5:47 AM
        Subject: Re: [App_rpt-users] Audio detection circuit to generate 'COR'

        http://www.aaroncake.net/circuits/vidswitch.asp

        That might work, I use it for packet.

        What radio are you on?

        Sent from my iPhone

        On Oct 6, 2015, at 6:29 AM, Steven Donegan <donegan at donegan.org> wrote:

          Does anyone have a circuit that will take audio from a radio and generate a pseudo COR signal for the URI-x? If so would you share the circuit diagram?

          TIA

          Steven Donegan
          KK6IVC General Class FCC License
          Silver State Car #86
          www.sscc.us
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