project:ok1rbm:sx-600
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project:ok1rbm:sx-600 [2017/01/20 14:17] – [measuring of Nagoya NA-701 from CN distributor] yan | project:ok1rbm:sx-600 [2017/04/23 12:42] – [measuring taiwan NA-771] yan | ||
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Line 53: | Line 53: | ||
</ | </ | ||
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' | c) SWR start' | ||
Line 62: | Line 65: | ||
| | | | | | | | | | | | | | ||
|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} | | ||
</ | </ | ||
notes: | notes: | ||
+ | |||
a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/ | a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/ | ||
+ | b) measured another day, antena hanging freely | ||
+ | |||
+ | ==== measuring original baofeng antenna ==== | ||
+ | |||
+ | < | ||
+ | < | ||
+ | |frq| | Pforw | Prefl | SWR | | ||
+ | | | | | | | | ||
+ | |172.000| | 4.8 | 3 | 8.6{a} | | ||
+ | |446.000| | 3.2 | 0 | 1{a} | | ||
+ | </ | ||
+ | notes: | ||
+ | a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/ | ||
+ | |||
+ | ==== measuring china NA-771 ===== | ||
+ | < | ||
+ | < | ||
+ | |frq| | Pforw | Prefl | SWR | | ||
+ | | | | | | | | ||
+ | |172.000| | 3.8 | 2.4 | 8.7{a} | | ||
+ | |446.000| | 2.4 | 1.3 | 6.6{a} | | ||
+ | </ | ||
+ | notes: | ||
+ | a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/ | ||
+ | |||
+ | |||
+ | ==== measuring taiwan NA-701 ===== | ||
+ | < | ||
+ | < | ||
+ | |frq| | Pforw | Prefl | SWR | | ||
+ | | | | | | | | ||
+ | |172.000| | 4 | 3.5 | 30{a} | | ||
+ | |446.000| | 1.8 | 0.4 | 2.8{a} | | ||
+ | </ | ||
+ | notes: | ||
+ | a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/ | ||
+ | |||
+ | ==== original wouxun antenna ===== | ||
+ | < | ||
+ | < | ||
+ | |frq| | Pforw | Prefl | SWR | | ||
+ | | | | | | | | ||
+ | |172.000| | 2.6 | 1.1 | 4.72{a} | | ||
+ | |446.000| | 1.9 | 0.9 | 5.4{a} | | ||
+ | </ | ||
+ | notes: | ||
+ | a) calculated by equation from documentation SWR = [sqrt(Pf) + sqrt(Pr)]/ |
project/ok1rbm/sx-600.txt · Last modified: 2017/04/23 17:17 by yan