[amsat-bb] 9.6k woes and FoxTelem

[Dave Webb KB1PVH]

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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