[TangerineSDR] Notes from PSWS / TangerineSDR call of 05-03-2021

Tue May 4 08:33:56 EDT 2021

Thank you, Tom.

The video is uploading to youtube now, and will be available later today at https://youtu.be/1AVI5vYMA7o.
It will also be available at https://hamsci.org/telecons.

73 de Nathaniel W2NAF

From: TangerineSDR <tangerinesdr-bounces at lists.tapr.org> On Behalf Of Tom McDermott via TangerineSDR
Sent: Monday, May 3, 2021 10:08 PM
To: TAPR TangerineSDR Modular Software Defined Radio <tangerinesdr at lists.tapr.org>
Cc: Tom McDermott <tom.n5eg at gmail.com>
Subject: [TangerineSDR] Notes from PSWS / TangerineSDR call of 05-03-2021

Notes from PSWS / TangerineSDR call of 05-03-2021

1. Grape 1 documentation:  https://hamsci.org/grape1<https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fhamsci.org%2Fgrape1&data=04%7C01%7Cnathaniel.frissell%40scranton.edu%7Cc20561f162d14d6905c308d90ea19391%7Ca8edc49a41f14c699768a7f6d7c3b8c3%7C0%7C0%7C637556909420421638%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=Ev6ns7hbfcwY8CeA1JqXtqIyeCh860Ri9x612I71HA0%3D&reserved=0>.   Current parts list should be up tomorrow.
Standard Grape 1 software image (from John Gibbons): https://drive.google.com/drive/folders/1YE5UjQknnhuRUq4Y86czhxbIwzUWbgbn?usp=sharing<https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdrive.google.com%2Fdrive%2Ffolders%2F1YE5UjQknnhuRUq4Y86czhxbIwzUWbgbn%3Fusp%3Dsharing&data=04%7C01%7Cnathaniel.frissell%40scranton.edu%7Cc20561f162d14d6905c308d90ea19391%7Ca8edc49a41f14c699768a7f6d7c3b8c3%7C0%7C0%7C637556909420431593%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=p%2Fti1mpd4MvS6UrVmak%2BI%2Fil89KUL%2BdnTJ397i2Bqak%3D&reserved=0>

2. Video about Remote System Update on Max 10 FPGA (Intel):   https://www.youtube.com/watch?v=KPWOpYQD_JM<https://nam10.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.youtube.com%2Fwatch%3Fv%3DKPWOpYQD_JM&data=04%7C01%7Cnathaniel.frissell%40scranton.edu%7Cc20561f162d14d6905c308d90ea19391%7Ca8edc49a41f14c699768a7f6d7c3b8c3%7C0%7C0%7C637556909420431593%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=9wEDwhxMtiixvstsIk%2FToqiTmti0hrO9E5coXCOnYQ0%3D&reserved=0>

3. Discussion on CIC compensation filters. MATLAB can generate a filter to compensate for passband droop and export the coefficients. This apparently also works (without graphics) in OCTAVE. Scotty mentioned there is a $50 student version of MATLAB. Tom discussed measurements of gnuradio built-in time-domain windowing filter impact on FFT scalloping and other amplitude errors.

4. Scotty is making progress on acquiring components for first prototypes. He's down to 3 significant missing or delayed parts. The FPGA may become the longest lead part (it's industrial temperature range and the fastest speed grade).

-- Tom, N5EG

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