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| ====== Antenna Tuner Model 229 ====== | ====== Antenna Tuner Model 229 ====== | ||
| {{229.jpg?150|}} | {{229.jpg?150|}} | ||
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| ===== Description ===== | ===== Description ===== | ||
| - | *Reversible "L" circuit, silver-plated roller inductor, high-voltage variable capacitor and switch-selectable fixed capacitors for precision matching. | + | Adjustable reactive network used for matching the unbalanced 50 ohm output impedance of transmitters and transceivers to a variety of loads, either balanced or unbalanced. Covers 1.8 to 30 MHz. Provision for selecting one of four antennas or for bypassing the matching network. A dual range power and SWR meter is included. |
| - | *Automatically provides low Q, minimum-loss path. | + | |
| - | *Rated 2 kW PEP, 1 kW cw. | + | ===== Additional Information ===== |
| - | *Matches 50-ohm unbalanced output to balanced or unbalanced loads (dipoles, inverted "V"s, long wires, windoms, beams, rhombics, whips, Zepps, Hertz, and similar) from 1.8 - 30 MHz. | + | *[[t_vs_l|Explanation of "L" Network vs. "T" Network]] by Scott Robbins, W4PA |
| - | *Built-in balun. | + | |
| - | *SWR bridge indicates 1:1 to 5:1. | + | ===== Sales Information ===== |
| - | *2-range power meter reads 10 to 2000 watts. | + | {{229ad.jpg?100|Magazine Ad from June 1982}} |
| - | *Front panel by-pass switch and 4-position antenna selector switch. | + | |
| - | *Coax and screw-type connectors. | + | |
| - | *Requires 12 Vdc for dial lighting. | + | |
| - | *Styled in black and bronze. | + | |
| - | *Front panel with black-out lighting. | + | |
| ===== Specifications ===== | ===== Specifications ===== | ||
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| ***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, 1.8 to 30 MHz. 3000 ohms maximum at full power. | ||
| - | ***Maximum Impedance, Balanced Feedline:** 500 ohms | + | ***Maximum Balanced Load (through the balun):** 500 ohms |
| ***Input Impedance:** 50 ohms, nominal | ***Input Impedance:** 50 ohms, nominal | ||
| - | ***Input/Output Connectors:** Input and four antenna coax connectors are SO-239, UHF type. Studs with wing nuts for single wire and balanced feeders. | + | ***Capacitor Voltage Rating:** 3.5 kV |
| - | ***Variable Capacitor Voltage Rating:** 3.5 kV | + | ***Inductor:** 18 uh silver plated roller inductor |
| - | ***Inductance:** 18 uh silver plated roller inductor | + | |
| ***Finish:** Dark painted front and rear, textured sides and top | ***Finish:** Dark painted front and rear, textured sides and top | ||
| - | ***Size:** HWD (in inches) 5.5 x 13 x 11 (13.9 x 33 x 27.9 cm) | + | ***Size:** HWD 5.5" x 13" x 11", overall |
| - | ***Weight:** 9 lbs (4.1 kg.) | + | ***Weight:** 9 lbs |
