<div dir="ltr"><div dir="ltr">Robert,</div><div dir="ltr"><br></div><div dir="ltr">Look into "Packet Ham Radio" K4ABT has a good beginners page. I'm not sure if packet radio is still a thing? I haven't used it since the mid to late 90's</div><div dir="ltr"><br clear="all"><div><div dir="ltr" class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr">Thanks,<div><br></div><div>Bob KA1TTG</div><div><br></div><div><div style="font-family:arial;font-size:small"><br></div></div></div></div></div></div></div><br></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Apr 7, 2021 at 5:51 PM Robert Withers via chirp_users <<a href="mailto:chirp_users@intrepid.danplanet.com">chirp_users@intrepid.danplanet.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">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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