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@amsat.org>
To: Johnny Keeker <cypresstower@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@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@amsat.org>
To: "app_rpt-users@ohnosec.org" <app_rpt-users@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&apos;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

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