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227 [2007/05/20 19:41]
127.0.0.1 external edit
227 [2008/05/13 18:35] (current)
n5na
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 ===== Description ===== ===== Description =====
-Matches ​50 ohm unbalanced ​output to variety of balanced ​or unbalanced ​antenna impedances.  ​46-tap inductor allows vernier adjustment.  200 watts intermittant, 100 watts continuous.+The Model 227 antenna tuner is an inductive/​capacitive network used for matching unbalanced ​50 - 75 ohm output ​impedances of transmitters and transceivers ​to variety of loads, both balanced ​and unbalanced.  ​It operates over a frequency range of 1.8 to 30 MHz.  It has a built-in antenna select switch which permits bypassing the tuner or selection of three different antennas Same as Model [[228]] but without the SWR bridge/​meter. 
 + 
 +===== Specifications ===== 
 +  ***Circuit:​** ​ T network 
 +  ***RF Power:​** ​ 200 watts, ​intermittent; ​100 watts continuous 
 +  ***Capacitor Voltage Rating:​** ​ 1 KV 
 +  ***Inductor:​** ​ 47 taps, 18 gauge silver-plated wire on a 2" diameter core 
 +  ***Input Impedance:​** ​ 50 - 75 ohms, unbalanced 
 +  ***Output:​** ​ Matches most loads, balanced and unbalanced ​Maximum balanced load 1.8 to 4.0 MHz is 500 ohms. 
 +  ***Frequency Range:** 1.8 to 30 MHz 
 +  ***Finish:​** ​ Painted front and rear panel; black textured sides and top

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