Home Build issue

Discussion about this major DATV Project. See https://wiki.batc.org.uk/The_Portsdown_Transmitter
Post Reply
M0SKM
Posts: 375
Joined: Sun Jul 13, 2014 3:15 pm

Re: Home Build issue

Post by M0SKM » Sat Mar 18, 2017 9:56 am

Hi Dave,

Thanks for the link.

Mods were done on my board a while back and there's no problem with the four lower symbol rates; it's very good.

What I'd like to see are results for 1Ms/s, 2Ms/s and 4Ms/s which on my board appear to be too wide. There's no question regards picture quality; just the bandwidth.

73 Steve
Find me on the LEO/MEO satellites.
https://m0skm.com/2024/03/29/worked-all-states/
Top
G8GKQ
Site Admin
Posts: 2928
Joined: Sun Mar 22, 2009 1:21 pm

Re: Home Build issue

Post by G8GKQ » Sat Mar 18, 2017 10:06 am

Latest (correct) V1A Board Image
Assembled V1A Small.jpg
Assembled V1A Small.jpg (316.59 KiB) Viewed 4071 times
Spectrum plots to follow.

Dave, G8GKQ
Top
ZL3TCM
Posts: 28
Joined: Thu Mar 16, 2017 5:28 am

Re: Home Build issue

Post by ZL3TCM » Sat Mar 18, 2017 7:54 pm

Great Guys thanks for the clarification

Rob
Top
g8gtz
Posts: 1776
Joined: Wed Apr 07, 2010 6:26 pm

Re: Home Build issue

Post by g8gtz » Sat Mar 18, 2017 8:53 pm

1255 Mhz Spectrum plots at 333ks, 1Ms, 2Ms and 4Ms from one of the production boards are available here https://wiki.batc.tv/Portsdown_Output_Levels
Top
Post Reply

Return to “The Portsdown Digital ATV System”