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

Tue Oct 6 15:25:54 UTC 2015

Thanks Steve! I will still give my shiny new spectrum analyzer software a try :-) Then build a bandpass filter for 70cm band and ensure no harmonics leak...
 Steven Donegan
KK6IVC General Class FCC License
Silver State Car #86
www.sscc.us
      From: Steve Zingman <szingman at msgstor.com>
 To: Steven Donegan <donegan at donegan.org> 
Cc: "app_rpt-users at ohnosec.org" <app_rpt-users at ohnosec.org> 
 Sent: Tuesday, October 6, 2015 8:17 AM
 Subject: 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 <szingman at msgstor.com>
 To: Steven Donegan <donegan at donegan.org> 
 Cc: "app_rpt-users at ohnosec.org" <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 <szingman at msgstor.com>
 To: Steven Donegan <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 <szingman at msgstor.com>
 To: Steven Donegan <donegan at donegan.org>; "app_rpt-users at ohnosec.org" <app_rpt-users at ohnosec.org> 
 Cc: "app_rpt-users at ohnosec.org" <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 <electricity440 at gmail.com>
 To: Steven Donegan <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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