Call Search
     

New to Ham Radio?
My Profile

Community
Articles
Forums
News
Reviews
Friends Remembered
Strays
Survey Question

Operating
Contesting
DX Cluster Spots
Propagation

Resources
Calendar
Classifieds
Ham Exams
Ham Links
List Archives
News Articles
Product Reviews
QSL Managers

Site Info
eHam Help (FAQ)
Support the site
The eHam Team
Advertising Info
Vision Statement
About eHam.net

donate to eham
   Home   Help Search  
Pages: [1]   Go Down
  Print  
Author Topic: Reverse Beacon Network  (Read 411 times)
F8WBD
Member

Posts: 117




Ignore
« on: November 29, 2017, 01:51:50 PM »

I need real-world advice. Can you tell me what snr reading would be desired to initiate and complete a 2-way cw QSO. Must it be double-digit or would 5 or 6 or 7 do. Two competent cw operators operating at 13-16 wpm. Of course QRM and QRN conditions a factor. Thanks
Logged
VK5EEE
Member

Posts: 1199




Ignore
« Reply #1 on: November 29, 2017, 05:33:02 PM »

I need real-world advice. Can you tell me what snr reading would be desired to initiate and complete a 2-way cw QSO. Must it be double-digit or would 5 or 6 or 7 do. Two competent cw operators operating at 13-16 wpm. Of course QRM and QRN conditions a factor. Thanks

Depending on a few factors, but tests show that minus 10dB is not a problem, i.e. 10dB below noise, and skilled experienced can even manage -13dB though not error free. So absolutely a minus number would be easy, not a plus number! I assume that the reason the RBN only has positive numbers is, because a DECODER cannot do what the human brain can do.

Another way of putting it: if the RBN has picked you up, a  non-robot would have NO problem as your signal would be ABOVE the noise level. BUT anyone can copy CW BELOW noise level -- having said that there ARE many people who just hate noise and only reply to CW when it is several S points ABOVE noise level, they just like things loud and with hifi quality.
Logged

Long Live Real Human CW and wishing you many happy CW QSO - 77 - CW Forever

Support CW and join CW clubs. QTT: FIST#1124, HSC#1437, UFT#728, RCWC#982, SKCC#15007, CWOPS#1714, 30CW#1,
DJ1YFK
Member

Posts: 255


WWW

Ignore
« Reply #2 on: November 29, 2017, 10:28:17 PM »

I need real-world advice. Can you tell me what snr reading would be desired to initiate and complete a 2-way cw QSO. Must it be double-digit or would 5 or 6 or 7 do. Two competent cw operators operating at 13-16 wpm. Of course QRM and QRN conditions a factor. Thanks


Previous discussion:  http://www.eham.net/ehamforum/smf/index.php/topic,109178.0.html

73
Fabian
Logged

VK5EEE
Member

Posts: 1199




Ignore
« Reply #3 on: November 29, 2017, 11:17:37 PM »

Thanks, please ignore my reply above, seems it is rather different from the way I understood it, and the above link explains it well.
Logged

Long Live Real Human CW and wishing you many happy CW QSO - 77 - CW Forever

Support CW and join CW clubs. QTT: FIST#1124, HSC#1437, UFT#728, RCWC#982, SKCC#15007, CWOPS#1714, 30CW#1,
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.11 | SMF © 2006-2009, Simple Machines LLC Valid XHTML 1.0! Valid CSS!