[App_rpt-users] Resistor divider

[Johnny Keeker]

Robert:
You made a good point. 
Knowledge in at the library, you can get all you want.  
Wisdom comes from life experience. 
Good luck... 
JK

From: Robert Newberry <N1XBM at amsat.org>
To: Johnny Keeker <cypresstower at yahoo.com> 
Sent: Thursday, October 31, 2013 8:18 AM
Subject: Re: [App_rpt-users] Resistor divider



I should be able to use the DSP in the software to accomplish a high pass filter. I'm a little confused some people are adamant to use a resistor divider on a mastr ii and others say the DSP will handle it just fine. I guess I just need to try things and see for myself. 
Apparare Scientior 
Paratus Communicare
-N1XBM
On Oct 30, 2013 11:48 PM, "Johnny Keeker" <cypresstower at yahoo.com> wrote:

I use the capacitor it good design practice to isolates the circuits 
>although it will not strip the pl or dpl.  If I want to strip pl or dpl, 
>use a Communication Specialists Board. You can try removes their 
>audio cap and add jumpers.  "Just kidding".  Another consideration, 
>take a look at, pin 16, connector P904, on the IF/Audio Squelch Board; 
>RX PA. The audio is clean and de-emphasized. 
>JK   
>
>
>
>
>From: Robert Newberry <N1XBM at amsat.org>
>To: Johnny Keeker <cypresstower at yahoo.com> 
>Sent: Wednesday, October 30, 2013 8:08 PM
>Subject: Re: [App_rpt-users] Resistor divider
>
>
>
>I just realized that the DSP should be able to strip PL off. At least I think it can.
>Apparare Scientior 
>Paratus Communicare
>-N1XBM
>On Oct 30, 2013 6:44 PM, "Johnny Keeker" <cypresstower at yahoo.com> wrote:
>
>Robert;
>>You need to remove the sub audible tone when using vol hi, 
>>but if your not concerned with hearing your ctcss tones,  
>>use a 10uf cap off the vol hi through a series 10k to a 3.3k 
>>to ground. Tap the audio where the 10k meets the 3.3k resistor.  
>>Use a variable 5k pot in place of the 3.3k if you want to change 
>>the levels or just change the 3.3k value.... 
>>JK
>>
>>
>>
>>From: Robert Newberry <N1XBM at amsat.org>
>>To: "app_rpt-users at ohnosec.org" <app_rpt-users at ohnosec.org> 
>>Sent: Wednesday, October 30, 2013 12:45 PM
>>Subject: [App_rpt-users] Resistor divider
>>
>>
>>
>>I need help, I am using a Mastr II and a URI. I want to use the vol/sql hi for my discriminator audio. I was going to use a resistor divider to pad down the audio. 
>>Has anyone ever done this? Could you explain it in more detail to me. I've read you take the two resistors and put them in series. I would tap my URI in the middle where those two resistors meet. I assume one end goes to vol/sql hi, but where does the far end go?
>>Thanks for your help
>>Apparare Scientior 
>>Paratus Communicare
>>-N1XBM
>>_______________________________________________
>>App_rpt-users mailing list
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>>http://ohnosec.org/cgi-bin/mailman/listinfo/app_rpt-users
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>>
>>
>
>
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