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253 [2007/02/20 03:52] n5na |
253 [2018/11/01 02:21] (current) n5na [Mods & Tips] |
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| ====== Automatic Antenna Coupler Model 253 ====== | ====== Automatic Antenna Coupler Model 253 ====== | ||
| - | {{253.jpg?150|}} | + | {{253.jpg?150|}}{{253rear.jpg?115|}} |
| ===== Description ===== | ===== Description ===== | ||
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| *Includes dual range power and SWR meter. | *Includes dual range power and SWR meter. | ||
| + | ===== Reviews ===== | ||
| + | *[[http://www.eham.net/reviews/detail/141|eHam]] | ||
| + | |||
| + | |||
| + | ===== Mods & Tips ===== | ||
| + | *{{ve7tk_253_mod.pdf|Intermittent Keying Loop by VE7TK}} | ||
| + | *[[253banddecoder|Band Decoding Interface]] by Gary Huber - AB9M | ||
| ===== Specifications ===== | ===== Specifications ===== | ||
| ***Circuit Type:** Reversible "L" network. | ***Circuit Type:** Reversible "L" network. | ||
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| ***Antenna Switch:** 4 position. Position 4 configurable for coax, single wire, or balanced line fee. Internal balun standard. | ***Antenna Switch:** 4 position. Position 4 configurable for coax, single wire, or balanced line fee. Internal balun standard. | ||
| ***Output Matching Range:** At least 10:1 VSWR, any phase angle, 1.8 to 30 MHz. 1300 ohms maximum parallel equivalent resistance at 1500 watts output (2 KV peak, >26:1 VSWR). 5000 ohms maximum parallel equivalent resistance across balanced line at 1500 watts output (4 KV peak). | ***Output Matching Range:** At least 10:1 VSWR, any phase angle, 1.8 to 30 MHz. 1300 ohms maximum parallel equivalent resistance at 1500 watts output (2 KV peak, >26:1 VSWR). 5000 ohms maximum parallel equivalent resistance across balanced line at 1500 watts output (4 KV peak). | ||
| + | ***Minimum Full Power Longwire Length:** Single wire feed: 180/F (MHz) feet at 1500 watts output. | ||
| + | ***Over Voltage:** "ARCING" indicator illuminates when RF voltage exceeds 2 KV. Tuner is reset to bypass mode if ARCING or OVER indication remains on for more than 1 second. Hot switching protection provided by internal relay interlock system. | ||
| + | ***Size:** HWD 5.5" x 14" x 10.5", overall (138 x 356 x 267 mm). | ||
| + | ***Weight:** 9 lbs 9 oz., (4.34 Kg). | ||
