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project:ok1rbm:sx-600

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project:ok1rbm:sx-600 [2017/03/28 11:14] – [measuring of Nagoya NA-701 from CN distributor] yanproject:ok1rbm:sx-600 [2017/04/23 17:17] (current) – [measuring china NA-771] yan
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 </table> </table>
 notes: notes:
 +
 a) antena freely hangs from table a) antena freely hangs from table
 +
 b) cable which was connected to antena was held just under antenna to simulate real world enviroment b) cable which was connected to antena was held just under antenna to simulate real world enviroment
 +
 c) SWR start's to be pretty unprecise in those values c) SWR start's to be pretty unprecise in those values
  
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 | | | | | | | | | | | |
 |172.000| | 2.6 | 0.9  | 12.8{a} | |172.000| | 2.6 | 0.9  | 12.8{a} |
 +|172.000| | 4.5 | 3.2  | 11.8{a,b} |
 |446.000| | 1.7 | 0.4  | 2.9{a} | |446.000| | 1.7 | 0.4  | 2.9{a} |
 </table> </table>
 notes: notes:
 +
 a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/[sqrt(Pf) - sqrt(Pr)] a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/[sqrt(Pf) - sqrt(Pr)]
 +
 +b) measured another day, antena hanging freely
  
 ==== measuring original baofeng antenna ==== ==== measuring original baofeng antenna ====
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 ==== measuring china NA-771 ===== ==== measuring china NA-771 =====
 <table> <table>
-<caption>table 3 - measuring china NA-771 antenna frequency-Pf,Pr values measured by SX-600</caption>+<caption>table 3 - measuring china RH771 antenna frequency-Pf,Pr values measured by SX-600</caption>
 |frq| | Pforw | Prefl | SWR | |frq| | Pforw | Prefl | SWR |
 | | | | | | | | | | | |
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 </table> </table>
 notes: notes:
-a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/[sqrt(Pf) - sqrt(Pr)]+a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/[sqrt(Pf) - sqrt(Pr)] , measured "hanging freely"
  
 +
 +==== measuring taiwan NA-701 =====
 +<table>
 +<caption>table 3 - measuring china NA-771 antenna frequency-Pf,Pr values measured by SX-600</caption>
 +|frq| | Pforw | Prefl | SWR |
 +| | | | | |
 +|172.000| | 4 | 3.5  | 30{a} |
 +|446.000| | 1.8 | 0.4  | 2.8{a} |
 +</table>
 +notes:
 +a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/[sqrt(Pf) - sqrt(Pr)] , measured "hanging freely" - looked same from hand
 +
 +==== original wouxun antenna =====
 +<table>
 +<caption>table 3 - measuring original wouxun antenna frequency-Pf,Pr values measured by SX-600</caption>
 +|frq| | Pforw | Prefl | SWR |
 +| | | | | |
 +|172.000| | 2.6 | 1.1  | 4.72{a} |
 +|446.000| | 1.9 | 0.9  | 5.4{a} |
 +</table>
 +notes:
 +a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/[sqrt(Pf) - sqrt(Pr)] , measured "hanging from hand"
project/ok1rbm/sx-600.1490699667.txt.gz · Last modified: 2017/03/28 11:14 by yan