Home |
Search |
Today's Posts |
#3
![]() |
|||
|
|||
![]() Some of your stuff is very clear and easy to follow . . But i think it starts lower than 1 or 2 GHZ . And the current text books are worthless . I have HP by ..... somebody ADAMS .. Still too much obtuse in this book , but it does have a few simplifications . What humans need to know , is the gotchas . When to toss a method , and experiment . There are some really exciting secrets ... When i hear someone wants to TX some real big power ( Magnetron) , i see a lower cost way . TX only a small power ( modulation ) , then demodulate at destination .. plug in a huge 115vac P.S. and recreate the power , at the target , lower frequency . I know how to lightning protect my 440 Yeasu 8800 , so i put it on the pole . an HT in a Golfers hands will not be damaged by lightning if it has a low Z circuit to all components in the HT . The HT must have both 1) a way to generate an E fld , and 2) be a low Z conductor ... to be damaged . Copper box your TX and then allow the hookup wires to create the E fld , and it blows up . But short the input and output wires and its impossible to generate the E fld , the Lighning will use to "find" a path . Lighning rods create an attraction to lighning If you could generate and sustain a sig' opp polarity , youd force lightning away . Say you pound a copper rod in the gnd , 200 ' away . You still have the very high amps , into the rod to create a E fld ! So , the theory of first attracting then diverting 2 million amps in your conductor . becomes costly . You cant make antenna non-conductive , so live with it . But you can short all wires leading into the TX box . And add other low Resistance paths , and more importantly Hi capacitance paths around your TX box .... |
Thread Tools | Search this Thread |
Display Modes | |
|
|
![]() |
||||
Thread | Forum | |||
microphone impedance matching circuit? | Equipment | |||
microphone impedance matching circuit? | General | |||
Antenna impedance matching - old Grundig tube receiver | Shortwave | |||
RF filters and Impedance Matching | Homebrew | |||
RF filters and Impedance Matching | Homebrew |