[amsat-bb] 9.6k woes and FoxTelem

[Chris Thompson]

If you listen to a local repeater does the audio flow through fine to
FoxTelem?  Can you hear it?

Show us a screen shot of the display when it is trying to decode. If the
bits do not look like a square wave then the signal is being filtered
somewhere in the chain.

Chris

On Wed, Oct 10, 2018 at 10:38 AM Dave Webb KB1PVH <kb1pvh at gmail.com> wrote:

> Kevin,
>
>  Have you played with the input levels on the sound card?
>
> Dave-KB1PVH
>
>
> Sent from my Galaxy S9
>
> On Wed, Oct 10, 2018, 10:17 AM Kevin Zari <kk4yel at gmail.com> wrote:
>
> > I’m pulling out what little hair I have left. I have borrowed a friend’s
> > IC-910, and want to feed the output of the radio to both a signalink USB
> > and also to the direct Line-in of the laptop to receive the 9600 bps
> signal
> > off of the 9600 pin 4 of the Data mini DIN. So here is what I did:
> >
> > First, I took a cable that was straight through all 6 pins and added a
> > RJ-45 connector on the end, in such a way that pin 1 of the mini DIN was
> > pin 1 of the RJ45 connector, pin 2 was pin 2, ... pin 6 to pin 6, etc...
> >
> > I created a patch panel with two patches, one that is straight through,
> > and one that crosses pins 4 and 5. More about that in a bit.
> >
> > The signalink was wired in such a way that it is expecting the input on
> > pin 5, and ground on pin 2. So in this case when I connect up the cable
> to
> > the signalink with a straight through cat 5e cable, it gets the audio out
> > of the rig at 1200 bps (pin 5).
> >
> > When I want to use the 9600 bps out, I unplug the cable from the patch
> > panel and connect it up to the other patch, where it takes pin 4 (9600
> bps)
> > and throws it on pin 5 of the patch panel output. I then have a cable
> that
> > takes pin 5 and brings it to the tip of a TS 3.5mm mono cable. Pin 2
> (GND)
> > goes to the sleeve. I then plug this into the mic input of an older Apple
> > MacBook Pro.
> >
> > I remembered to set the IC-910 to 9600 mode. I start FoxTelem and set the
> > input to the Mac’s wired mic input, but I never decode anything.
> >
> > One thing that is odd to me is that when I toggle the 9600 mode on the
> > IC-910, I do not see / hear a difference. I would imagine it should
> toggle
> > some signal on and off the pin 4.
> >
> > Any ideas would be highly appreciated. I have also just tried a simple
> > cable with pin 4 to the tip and pin 2 to the sleeve, and have seen
> similar
> > results.
> >
> > I appreciate any ideas, criticism, etc...
> >
> > -Kevin (KK4YEL)
> >
> >
> >
> > -----
> >
> > The problem with the world is that the intelligent people are full of
> > doubts, while the stupid ones are full of confidence.
> > _______________________________________________
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> >
> _______________________________________________
> Sent via AMSAT-BB at amsat.org. AMSAT-NA makes this open forum available
> to all interested persons worldwide without requiring membership. Opinions
> expressed
> are solely those of the author, and do not reflect the official views of
> AMSAT-NA.
> Not an AMSAT-NA member? Join now to support the amateur satellite program!
> Subscription settings: http://www.amsat.org/mailman/listinfo/amsat-bb
>


-- 
Chris E. Thompson
chrisethompson at gmail.com
g0kla at arrl.net