[Space] Audio

Christie Dudley longobord at gmail.com
Thu Mar 18 20:44:03 PDT 2010


I think the idea we had was that they were each sending at the same
interval.  If they maintain even reasonably good clocks and aren't aligned,
they shouldn't ever overlap.  I think their duty cycle is low enough that
this wouldn't be a problem.

(I'm assuming that you mean amateur radio, not an actual walkie-talkie,
here?)

Christie
_______
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scripts." -- Noisebridge meeting notes 2008-06-17

The outer bounds is only the beginning.
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On Thu, Mar 18, 2010 at 6:24 PM, Albert Alexander <
albert.alexander at gmail.com> wrote:

> Nope, they transmit at separate times. We could use a fet to switch sources
> but that's more parts and wires.
>
>
> On Thu, Mar 18, 2010 at 6:10 PM, Greg Stramback <grog at piratelabs.com>wrote:
>
>> I'm making the assumption that we're expecting a certain percentage of
>> garbled / unreadable packets due to two audio sources being combined?
>>
>> -g-
>>
>> On Thu, Mar 18, 2010 at 5:56 PM, Albert Alexander <
>> albert.alexander at gmail.com> wrote:
>>
>>> The walkie-talkie is getting audio from two sources. I suggested using a
>>> splitter to combine the sources, but this will load down the output
>>> transistors unless we add two resistors in series before the splitter. 10k
>>> is fine. This will attenuate the current of each signal. We could use a
>>> summing amp if we want to avoid the attenuation, or we could just turn up
>>> the volume.
>>>
>>> Will test G1 audio out AC coupling tonight after 5moF
>>>
>>> _______________________________________________
>>> Space mailing list
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>>>
>>>
>>
>
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