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<div class="signature">Don Goodrich<br/>
don.goodrich@Cheerful.com<br/>
AF7DG</div>
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<div style="margin:0 0 10px 0;"><b>Sent:</b> Wednesday, April 07, 2021 at 4:50 PM<br/>
<b>From:</b> "Robert Withers via chirp_users" <chirp_users@intrepid.danplanet.com><br/>
<b>To:</b> "Nigel A. Gunn G8IFF/W8IFF" <nigel@ngunn.net>, "Robert Withers via chirp_users" <chirp_users@intrepid.danplanet.com><br/>
<b>Subject:</b> Re: [chirp_users] Download From Radio under Ubuntu 20.04 error</div>
<div name="quoted-content">An additional query. How is DSP done, then? I thought that is what I was<br/>
looking to do, with a program running on connected computers, doing the<br/>
processing of the digital data.<br/>
<br/>
Thanks,<br/>
Robert<br/>
<br/>
On 4/7/21 5:42 PM, Robert Withers wrote:<br/>
> What? Is there no way to transmit data over RF? I thought that that was<br/>
> a transmit mode, in eligible frequencies. I guess the info transmitted<br/>
> must go through the mic input and out the spk jack, as those are the<br/>
> only jacks in my handheld. But I really thought that data transmission<br/>
> was possible. Oh dear, much more to research.<br/>
><br/>
> Kindly,<br/>
> Robert<br/>
><br/>
> On 4/7/21 4:57 PM, Nigel A. Gunn G8IFF/W8IFF wrote:<br/>
>> You're not going to do that using any connector normally provided on the radio.<br/>
>> You can send the data out of the computer through a serial port but it will need to go directly into the modulator or VFO on the radio. There are special data radios available but most amateur transceivers won't do it.<br/>
>> Video is different because of the bandwidth required so you might be better with receiver and transmitter designed for TV use.<br/>
>><br/>
>><br/>
>>> I want to read /write data to be broadcast over the RF frequency the<br/>
>>> radio is set to. I want to intercept the traffic on the computer to run<br/>
>>> my own protocol, which may be audio/video but encoded into my protocol.<br/>
>>> I am thinking the answer is reading and writing to the tty may work, or<br/>
>>> mic input and spk output for audio. But I want data transmission, not<br/>
>>> audio.My software currently reads/writes to/from a socket. The read side<br/>
>>> of reading from a tty should probably be buffered, somehow. Something to<br/>
>>> figure out as I complete my ReedSolomon implementation and fix a few<br/>
>>> bugs in my protocol software.<br/>
>>><br/>
>>> Kindly,<br/>
>>> Robert<br/>
>>><br/>
<br/>
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