Loading... |
Reply to author |
Edit post |
Move post |
Delete this post |
Delete this post and replies |
Change post date |
Print post |
Permalink |
Raw mail |
![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Administrator
|
Has anyone tried using the XG3's CW message facility to create a 10-
or 6-meter beacon? Just add antenna :) At 0 dBm output, the signal would be 50 dB below 100 watts. If the 100- W signal would have been S9+30 dB at the receiver, the XG3's signal would be at around S4. If anyone sets up a beacon, please post the frequency to the list so we can all tune in. 73, Wayne N6KR ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Loading... |
Reply to author |
Edit post |
Move post |
Delete this post |
Delete this post and replies |
Change post date |
Print post |
Permalink |
Raw mail |
![]() ![]() ![]() ![]() ![]() ![]() ![]() |
This raises something that has puzzled me for a while, Wayne. Are you
saying that a 50dB POWER reduction at the transmitter equates to a 50dB VOLTAGE reduction at the receiver? 73 de David G4DMP In a recent message, Wayne Burdick <[hidden email]> writes >At 0 dBm output, the signal would be 50 dB below 100 watts. If the 100- >W signal would have been S9+30 dB at the receiver, the XG3's signal >would be at around S4. > -- + - - - - - - - - - - - - - - - - + | David M Pratt, Kippax, Leeds. | | Website: http://www.g4dmp.co.uk | + - - - - - - - - - - - - - - - - + ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Loading... |
Reply to author |
Edit post |
Move post |
Delete this post |
Delete this post and replies |
Change post date |
Print post |
Permalink |
Raw mail |
![]() ![]() ![]() ![]() ![]() ![]() ![]() |
The decibel is always a power ratio. So for example, 20 dB is a 100:1
power ratio. If the impedance is the same, that works out to a 10:1 voltage ratio. Alan N1AL On Tue, 2011-06-21 at 06:00 +0100, David Pratt wrote: > ... Are you > saying that a 50dB POWER reduction at the transmitter equates to a 50dB > VOLTAGE reduction at the receiver? ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Loading... |
Reply to author |
Edit post |
Move post |
Delete this post |
Delete this post and replies |
Change post date |
Print post |
Permalink |
Raw mail |
![]() ![]() ![]() ![]() ![]() ![]() ![]() |
Yes, that is what I understood, Alan.
73 de David G4DMP In a recent message, Alan Bloom <[hidden email]> writes > >The decibel is always a power ratio. So for example, 20 dB is a 100:1 >power ratio. If the impedance is the same, that works out to a 10:1 >voltage ratio. ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html |
Free forum by Nabble | Edit this page |