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====== Titan Model 425 Linear Amplifier ====== | ====== Titan Model 425 Linear Amplifier ====== | ||
+ | {{425.jpg?150|}} | ||
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+ | ===== 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 | ||
+ | |||
+ | ===== 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. | ||
+ | ***Drive Power:** 65 to 80 watts typical for 1500 watts output. | ||
+ | ***Efficiency:** 50 - 65%, depending on frequency, drive level, and load. | ||
+ | ***Distortion:** -35 dB from 1 KW RF output level. | ||
+ | ***Harmonics:** -50 dB typical. | ||
+ | ***Input/Output Impedances:** 50 Ohms. | ||
+ | ***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. | ||
+ | ***Tube Complement:** Two Eimac 3CX800A7 ceramic, external anode triodes in a grounded grid circuit. Plate dissipation, 1600 watts. | ||
+ | ***Plate Voltage:** HI = 2400 Vdc, LO = 1800 Vdc, no load. | ||
+ | ***Cooling:** Ducted forced air, vertical exhaust, using a two speed centrifugal blower. | ||
+ | ***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. | ||
+ | ***ALC:** Negative-going, adjustable threshold. | ||
+ | ***LED Status Indicators:** Overdrive, Standby, Wait, Operate.. | ||
+ | ***Primary Power:** 220 - 250 VAC @ 20 A, maximum. 117 Vac operation possible but not recommended. | ||
+ | ***Protection:** Primary line fuses, plate current fuse, ac line and high voltage interlocks. | ||
+ | ***Front Panel Controls:** Power ON-OFF; Mode (Standby-Operate); plate voltage select (HI-LO); Plate TUNE; Loading; BAND Switch; METER Switch. | ||
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+ | == 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 | ||
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