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425 [2007/02/12 01:47] n5na |
425 [2008/07/28 22:20] n5na |
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| ====== Titan Model 425 Linear Amplifier ====== | ====== Titan Model 425 Linear Amplifier ====== | ||
| + | {{425.jpg?150|}}{{:425rear.jpg?150|}}{{:425ps.jpg?100|}} | ||
| + | |||
| + | |||
| + | ===== Reviews ===== | ||
| + | *[[http://www.arrl.org/members-only/prodrev/pdf/pr8604.pdf|ARRL]] (Must be an ARRL member and logged in to view.) | ||
| + | *[[http://www.eham.net/reviews/detail/669|eHam]] | ||
| + | *[[http://hamcall.net/cq|CQ Magazine]], 1986, February, Pg 34 | ||
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| + | |||
| + | ===== Mods & Info ===== | ||
| + | *[[425versions|Titan 425 Duty Cycle and Version Description]] | ||
| + | *[[425schem-k9yc|Titan 425 Partial Schematic]] | ||
| + | |||
| + | ===== Brochure ===== | ||
| + | {{425brochure.jpg?150|}} | ||
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| ===== Specifications ===== | ===== Specifications ===== | ||
| ***Band Coverage:** 1.8 - 2.0, 3.2 - 4.7, 6.5 - 8.5, 13.4 - 19.6, 17.6 - 23.0 MHz, With 10 meter modification, 17.6 - 26.5, 20.6 - 31 MHz. | ***Band Coverage:** 1.8 - 2.0, 3.2 - 4.7, 6.5 - 8.5, 13.4 - 19.6, 17.6 - 23.0 MHz, With 10 meter modification, 17.6 - 26.5, 20.6 - 31 MHz. | ||
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| ***Drive Power:** 65 to 80 watts typical for 1500 watts output. | ***Drive Power:** 65 to 80 watts typical for 1500 watts output. | ||
| - | |||
| ***Efficiency:** 50 - 65%, depending on frequency, drive level, and load. | ***Efficiency:** 50 - 65%, depending on frequency, drive level, and load. | ||
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| ***Distortion:** -35 dB from 1 KW RF output level. | ***Distortion:** -35 dB from 1 KW RF output level. | ||
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| ***Harmonics:** -50 dB typical. | ***Harmonics:** -50 dB typical. | ||
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| ***Input/Output Impedances:** 50 Ohms. | ***Input/Output Impedances:** 50 Ohms. | ||
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| ***CW Break-in:** QSK with vacuum relay. RF sensing circuit prevents keying or un-keying if 10 mW of RF present on the RF drive line. Switching time less than 8 ms. | ***CW Break-in:** QSK with vacuum relay. RF sensing circuit prevents keying or un-keying if 10 mW of RF present on the RF drive line. Switching time less than 8 ms. | ||
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| ***Tube Complement:** Two Eimac 3CX800A7 ceramic, external anode triodes in a grounded grid circuit. Plate dissipation, 1600 watts. | ***Tube Complement:** Two Eimac 3CX800A7 ceramic, external anode triodes in a grounded grid circuit. Plate dissipation, 1600 watts. | ||
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| ***Plate Voltage:** HI = 2400 Vdc, LO = 1800 Vdc, no load. | ***Plate Voltage:** HI = 2400 Vdc, LO = 1800 Vdc, no load. | ||
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| ***Cooling:** Ducted forced air, vertical exhaust, using a two speed centrifugal blower. | ***Cooling:** Ducted forced air, vertical exhaust, using a two speed centrifugal blower. | ||
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| ***Metering:** Full time plate current. Switch selected plate voltage, grid current, forward power or reflected power. Peak power is indicated on a 10 element LED bargraph display. The first nine elements are amber - the tenth LED is red and indicates 1500 watts output. | ***Metering:** Full time plate current. Switch selected plate voltage, grid current, forward power or reflected power. Peak power is indicated on a 10 element LED bargraph display. The first nine elements are amber - the tenth LED is red and indicates 1500 watts output. | ||
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| ***ALC:** Negative-going, adjustable threshold. | ***ALC:** Negative-going, adjustable threshold. | ||
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| ***LED Status Indicators:** Overdrive, Standby, Wait, Operate.. | ***LED Status Indicators:** Overdrive, Standby, Wait, Operate.. | ||
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| ***Primary Power:** 220 - 250 VAC @ 20 A, maximum. 117 Vac operation possible but not recommended. | ***Primary Power:** 220 - 250 VAC @ 20 A, maximum. 117 Vac operation possible but not recommended. | ||
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| ***Protection:** Primary line fuses, plate current fuse, ac line and high voltage interlocks. | ***Protection:** Primary line fuses, plate current fuse, ac line and high voltage interlocks. | ||
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| ***Front Panel Controls:** Power ON-OFF; Mode (Standby-Operate); plate voltage select (HI-LO); Plate TUNE; Loading; BAND Switch; METER Switch. | ***Front Panel Controls:** Power ON-OFF; Mode (Standby-Operate); plate voltage select (HI-LO); Plate TUNE; Loading; BAND Switch; METER Switch. | ||
| - | === Size and Weight === | + | == Size and Weight == |
| + | ***Amplifier:** HWD 5.25" x 15.25" x 15" | ||
| + | ***Power Supply:** HWD 8.25" x 13.4" x 10.25" | ||
| + | ***Amplifier:** 17 lbs | ||
| + | ***Power Supply:** 45 lbs | ||
| - | ***Size:** HWD 8.25" x 15.25" x 18.5" (20.3 x 38.7 x 46.9 cm) | ||
| - | ***Weight:** 47 lbs (21.3 kg) | ||
