Page Index Toggle Pages: 1 Send Topic | Print
Normal Topic Very low bit rate satellite communications : experiments ? (Read 89 times)
Admin1
Forum Administrator
*****
Offline


Welcome to the new forum

Posts: 87
Location: UK
Joined: 2nd Jun, 2017
Very low bit rate satellite communications : experiments ?
3rd Aug, 2017 at 3:13pm
Print Post  
Using transponders configured for Ku band VSAT return links to the hub teleport I've just been doing some link budgets for WSPR transmissions using 1 mW transmit power into a 10cm horn/dish at 14 GHz with hub reception on 1m dish. Using 6 Hz bandwidth I get results like C/N=9 dB.   Is that right ? It sounds a bit improbable to me.

With a bandwidth of 6 Hz the threshold for WSPR operation is a C/N of -2 dB, so the link should work very well with a good link margin of 10 dB or so.

The bit rate is extremely low, 28 bits every 2 minutes, and is rather the opposite to the popular 'broadband' but it should appeal to customers who do not want to send much data.

Read more: https://physics.princeton.edu/pulsar/K1JT/WSPR_2.0_User.pdf

Please say here if you have tried this or similar low data rate experiments.
  

Admin1
Back to top
WWW  
IP Logged
 
salam971
New Member
*
Offline



Posts: 9
Location: Dhaka, Bangladesh
Joined: 6th Jul, 2017
Re: Very low bit rate satellite communications : experiments ?
Reply #1 - yesterday at 5:51pm
Print Post  
The world needs faster internet speed. Do you think, It is really worthwhile to think about lowest streaming data rate !!!!
  
Back to top
 
IP Logged
 
Page Index Toggle Pages: 1
Send Topic | Print
Bookmarks:    Facebook    Google    Google+    Linked in    reddit    StumbleUpon    Twitter    Yahoo