Email: Password: Remember Me | Create Account (Free)

Back to Subject List

Old thread has been locked -- no new posts accepted in this thread
Per Westermark
01/21/12 09:42
Read: 368 times
Sweden


 
Msg Score: +1
 +1 Good Answer/Helpful
#185611 - Instruments
Responding to: Andy Neil's previous message
The problem with RF electronics, is that you can't really get anywhere without a reasonable set of instruments to test/measure.

How do you know if a circuit produces disturbance on other frequencies if you can't scan these frequencies with a suitably narrow-banded receiver? A normal oscilloscope will not get you far - it can't do FFT on radio-frequency signals to show overtone spectrum. And even really high-end GHz-capable multi-GS digital scopes who can sample the radio spectra would normally not have the sensitivity for picking up uV signals.

RF spectrum analyzers are very expensive.

A very, very skilled RF engineer can get far with cheaper equipment and lots of ingenuity. But such an engineer would not need to ask for help on this forum ;)

List of 19 messages in thread
TopicAuthorDate
RF amplifier for 4XX Mhz      JecksonS Ben      01/17/12 03:47      
   Probably illegal?      Andy Neil      01/17/12 12:46      
      maybe...      JecksonS Ben      01/18/12 06:12      
         Look for a legal solution!      Kai Klaas      01/18/12 11:14      
            It's immune with Jam      JecksonS Ben      01/19/12 01:46      
               Immune?      Per Westermark      01/19/12 02:55      
                  very high      JecksonS Ben      01/19/12 23:31      
                     Don't need kW to jam civilan "toy" equipment      Per Westermark      01/20/12 03:06      
                        You don't need to look at huge transmitters.?      JecksonS Ben      01/21/12 08:25      
                           Are there stores of info how's to implemented that?      Andy Neil      01/21/12 09:29      
                              Instruments        Per Westermark      01/21/12 09:42      
                                 that's why..      JecksonS Ben      01/22/12 07:51      
                                    No - side band disturbances will still be uV and illegal      Per Westermark      01/22/12 11:19      
                                       missing      JecksonS Ben      01/23/12 07:27      
                              true      JecksonS Ben      01/22/12 07:49      
                                 No! No!! No!!!      Andy Neil      01/22/12 10:03      
                                    ??      JecksonS Ben      01/23/12 07:37      
   Teh limit is..      Jez Smith      01/17/12 13:57      
   500mW ...      Rob Klein      01/17/12 15:24      

Back to Subject List