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238 [2007/02/19 03:43]
n5na
238 [2018/10/30 02:01]
n5na [Additional Information]
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 ===== Description ===== ===== Description =====
 Modified, reversible "​L"​ network matches broad range of impedances with no false resonances. ​ Handles 2 KW max.  Built-in lighted meter (external 12 VDC required) monitors forward power on 200 or 2000 watt scales and SWR.  Four position antenna switch for coax, single wire, or balanced line using built-in balun. Modified, reversible "​L"​ network matches broad range of impedances with no false resonances. ​ Handles 2 KW max.  Built-in lighted meter (external 12 VDC required) monitors forward power on 200 or 2000 watt scales and SWR.  Four position antenna switch for coax, single wire, or balanced line using built-in balun.
 +
 +===== Reviews =====
 +  *[[http://​www.eham.net/​reviews/​detail/​212|eHam]]
 +
 +
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 +
 +
 +===== Mods & Tips =====
 +  *[[238dialcord|Dial Cord Replacement]]
 +  *[[238no12v|Eliminate the Need for 12v]] or Unlimited Bulb Life!
 +  *[[http://​n6ie.com/​Ten_Tec_238.html|N6IE High Power Improvement Mod]]
 +
 +===== Additional Information =====
 +  *[[t_vs_l|Explanation of "​L"​ Network vs. "​T"​ Network]] by Scott Robbins, W4PA
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 +
 +
 +===== Brochures =====
 +{{238brochure.jpg?​100|}}
  
 ===== Specifications ===== ===== Specifications =====
-  ***CIRCUIT TYPE:** Modified "​L"​ Network +  ***Circuit Type:** Modified "​L"​ Network 
-  ***RF POWER RATING:** 2000 watts +  ***Maximum ​RF Power:** 2000 watts with a load impedance of 3000 ohms 
-  ***FREQUENCY RANGE:** 1.8 to 30 MHz +  ***Frequency Range:** 1.8 to 30 MHz 
-  ***OUTPUT MATCHING RANGE:** At least 10:1 SWR, any phase angle, 1.8 to 30 MHz. 3000 ohms maximum at full power +  ***Output Matching Range:** At least 10:1 SWR, any phase angle. 
-  ***INPUT IMPEDANCE:** 50 ohms, nominal +  ***Maximum Impedance, Balanced Feedline:** 500 ohms 
-  ***CAPACITOR VOLTAGE RATING:​** ​3500 volts +  ***Input Impedance:** 50 ohms, nominal 
-  ***INDUCTOR:** 18 uh silver plated roller inductor +  ***Input/​Output Connectors:​** Input and four antenna coax connectors are SO-239, UHF type.  Studs with wing nuts for single wire and balanced feeders. 
-  ***SIZE:** HWD (in inches) 5.5 x 13 x 11 (14x33x28 ​cm) +  ***Variable ​CAPACITOR VOLTAGE RATING:​** ​3.5 kV 
-  ***WEIGHT:** 10 lbs (4.53 kg.)+  ***Inductance:** 28 uh silver plated roller inductor 
 +  ***Size:** HWD (in inches) 5.5 x 13 x 11 (13.9 x 33 x 27.9 cm) 
 +  ***Weight:** lbs (4.kg.)

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