Re: Pi TNC to Motorola Radio
Teton Amateur Radio Repeater Association (TARRA)
You have your pins wrong.toggle quoted messageShow quoted text
Pin 2 is mic in and pin 5 is Flat TX audio in.
Mick - W7CAT
----- Original Message -----
From: "Willem Schreuder"
Sent: Thursday, August 30, 2018 11:22:19 AM
Subject: Re: [RaspberryPi-4-HamRadio] Pi TNC to Motorola Radio
> On Thu, 30 Aug 2018, Kevin Reeve wrote:
> > Anyone using a Motorola CDM 750, 1550 etc, connected to their Pi TNC
> > through the accessory port on the CDM 750 radio? The deviation is low
> > even when turning up R7 the audio out pot on the Pi. The goal is a
> > winlink gateway.
> Make sure the radio is wideband, not narrow band.
> The other trick is to feed the radio on Pin 1 (mic audio) as oppsed to Pin
> 3 (line audio). The audio on Pin 3 does not get emphasized, which causes
> problems with decoding.
> Dr. Willem A. Schreuder, President, Principia Mathematica
> Address: 445 Union Blvd, Suite 230, Lakewood, CO 80228, USA
> Tel: (303) 716-3573 Fax: (303) 716-3575
> WWW: www.prinmath.com Email: Willem.Schreuder@...