[Ground-station] In case you missed it - deviation limits measured for the MD-380

[Michelle Thompson]

Yes I think it definitely could help.

I'm interested in duplicating this to get Opulent Voice on the air in more
forms.

The RFM-69 is what we're using for the #sprite-sat work, and that's what is
on the re-spin board (for 70cm).

-Michelle Thompson




On Fri, Oct 7, 2022 at 2:10 PM Howie DeFelice <howied231 at hotmail.com> wrote:

> I had a similar requirement for a work project. I used a RFM-69 module
> from Sparkfun and a CML CVSD codec operating at 16 kbps using FSK. I used a
> Raspberry Pi mini for control. It was overkill but made it easy to modify
> radio parameters on the fly in my Python script. The RFM-69 can support up
> to 300 kbps and has allot of flexibilty in deviation. I operated it in
> continuous mode verse packet mode to stream my codec data. If you think
> this could help let me know.
>
> Howie AB2S
>
> Get Outlook for Android <https://aka.ms/AAb9ysg>
> ------------------------------
> *From:* Ground-Station
> <ground-station-bounces at lists.openresearch.institute> on behalf of
> Michelle Thompson via Ground-Station
> <ground-station at lists.openresearch.institute>
> *Sent:* Wednesday, October 5, 2022 5:08:13 PM
> *To:* Michelle Thompson via Ground-Station
> <ground-station at lists.openresearch.institute>
> *Subject:* [Ground-station] In case you missed it - deviation limits
> measured for the MD-380
>
> We wanted to see if we could use the popular HT MD-380 for Opulent Voice.
> Turns out the answer is no. Here's a 2 minute video on how we figured it
> out.
>
> https://youtu.be/099pQf0gO_8
> <https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fyoutu.be%2F099pQf0gO_8&data=05%7C01%7C%7Cce3e153e8ff04ebd2fa008daa715de28%7C84df9e7fe9f640afb435aaaaaaaaaaaa%7C1%7C0%7C638006009602719009%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=%2FAlNE7Gx5MY8sixe6nZHY4NYECM32jw5TRbta6L%2FosM%3D&reserved=0>
>
> Do you know of a commercial bit of gear that can do roughly +/-15 kHz
> deviation? Or more. Most digital voice HTs are limited to +/- 3 kHz.
>
> -Michelle Thompson
>
>
>
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