====== Antenna Tuner Model 238A ======
{{238a.jpg?150|}}{{238arear.jpg?150|}}

===== 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.

Note:  Same as Model [[238]] but with a new, charcoal grey case.

===== Reviews =====
  *[[http://www.arrl.org/members-only/prodrev/pdf/pr0302.pdf|ARRL]] (Must be an ARRL member and logged in to view.)
  *[[http://www.eham.net/reviews/detail/1322|eHam]]

===== Additional Information =====
  *[[t_vs_l|Explanation of "L" Network vs. "T" Network]] by Scott Robbins, W4PA



===== Related Links =====
  *[[this>./webarchive/238a/|Archived Ten-Tec Web Page]]

===== Specifications =====
  ***Circuit Type:** Modified "L" Network
  ***Maximum RF Power:** 2000 watts
  ***Frequency Range:** 1.8 to 30 MHz
  ***Output Matching Range:** At least 10:1 SWR, any phase angle, 1.8 to 30 Mhz.  3000 phms maximum at full power.
  ***Input Impedance:** 50 ohms, nominal
  ***Capacitor Voltage Rating:** 3.5 kV
  ***Inductor:** 18 uh silver plated roller inductor
  ***Size:** HWD (in inches) 5.5 x 13 x 11 (14 x 33 x 28 cm)
  ***Weight:** 10 lbs (4.53 kg.)