[HCARC] Acom 1000 amp for sale

[John Canfield]

Club - giving you guys first shot at buying my Acom 1000 amplifier - 
160m to 6m (not solid state.) It uses a GU-74 (4CX800) tube and the amp 
will come with a new old stock spare final tube.

There's probably only 50 hours total use - I basically only used it to 
check into the 75m RACES net on Monday night.

The amp will put out a solid 900 watts (solid carrier) or so with about 
50-60 watts input and it can be serviced by DX Engineering if ever 
required. DXE sells this amp for $2,759, I would like to get $1,900 for 
it to save my marriage when the XYL sees the bill for the new amp ;-) It 
comes with a plug for 220V (it will only run on 220V.)

I'm selling it because I have an Elecraft KPA1500 on order. The Acom is 
almost bullet proof with protection built in. It's super easy to tune up 
- just follow the instructions on the digital display. If anybody is 
interested I'll be happy to demonstrate in my shack. (I did quite a bit 
of research before I bought this 4 or 5 years ago, I think it's the best 
tube based amp on the market.)

73, de John WB5THT (cell 386-801-4878 or john at janeandjohn.org)

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 From DX Engineering:

ACOM 1000 HF + 6 Meter Linear Amplifiers are the world's best value in 
an Amateur HF amplifier. These amps provide you a comfortable 1,000 
watts output on all amateur bands from 160 through 6 meters.

The plate-load True Resistance Indicator (TRI) is a powerful tuning aid 
which helps the operator to quickly and precisely match antennas. The 
auto-operate function (when enabled) maintains the amplifier in OPERATE 
mode for you, saving on manual operations. Broadband input matches to 
the transceiver over the entire range of 1.8-54 MHz.

ACOM 1000 amplifiers are both user-friendly and look after themselves. 
They are designed to safely withstand up to 300 watts reflected power, 
drive spikes of up to 100 milliseconds duration, drive RF "tails" after 
a PTT or KEY release and the operator's inadvertent tuning errors. They 
also withstand a "soft" AC line and will deliver more than half power at 
only 75 percent of nominal mains voltage. They can withstand voltage 
drops for up to 10 milliseconds, and up to 15 percent higher 
line-voltage spikes. These details are all important, particularly when 
used at Field Day, on DXpeditions and other portable operations. Be sure 
to read the SPECIAL Note, below.

A Svetlana 4CX800A (GU74B) high-performance ceramic/metal tetrode with 
plate dissipation of 800 watts is employed. On-board processing provides 
permanent monitoring and protection of plate and grid voltages and 
currents, as well as the exhaust temperature.

Text messages, 12 different parameters, and strip peak-reading PEP meter 
are displayed on a dot-matrix, back-lighted LCD. LED indicators are 
provided for OPERATE, attenuator-on, and ON/OFF conditions. Records of 
the amplifier internal status are stored in nonvolatile memory for the 
seven most-recent auto-protection trips. This information is very 
valuable should diagnostics be needed.

The input bypassing and the vacuum antenna relays are very quiet even in 
CW mode due to their special mounting. This results in virtually 
noise-free QSK!

ACOM-1000 details:

* Frequency Coverage: 1.8-54 MHz
* Power Output: 1,000W PEP or continuous carrier; for continuous carrier 
transmissions longer than 15 minutes the external auxiliary fan must be 
installed
* Intermodulation Distortion: Better than 35dB below rated output
* Hum and noise: Better than 40dB below rated output
* Harmonic Output Suppression: 1.8-29.7 MHz; 50dB below rated output, 
50-54 MHz; 66dB below rated output
* Input and Output Impedances: Nominal values: 50 Ohm unbalanced output; 
Input circuit: broadband, VSWR less than 1.3:1, 1.8-54 MHz (no tuning, 
no switching); Bypass path: VSWR less than 1.1:1, 1.8-54 MHz continuously
* RF Gain: 12.5dB typically, frequency response less than 1dB (50-60W 
drive power for rated output)
* Primary Power: 170-264V (200, 210, 220, 230 and 240V nominal taps), 
50-60Hz, single phase, 2200VA consumption at rated output. 230 or 240 
volts recommended for USA

* SPECIAL Note: Order part number AOM-1000 to wire the AC plug and 
voltage selection yourself; order part number AOM-1000-240 for pre-wired 
240 volt operation or part number AOM-1000-120 for pre-wired 120 volt 
operation

* Complies with CE safety and electromagnetic compatibility requirements 
as well as FCC-regulations
* Size: 16.6 x 14 x 7.2 in.
* Weight 58.5 lbs.
* Operating environments: Temperature range 32 to 122 degrees F, 
Humidity up to 95 percent at 95 F
* Altitude: up to 3,000m (10,000 ft.) above sea level without output 
deterioration

Note: For additional information, please look at the files under the 
"Documentation" tab.

ACOM says that these are the "world's best value" in an Amateur HF 
amplifier. Order one of these ACOM 1000 HF + 6M Linear Amplifiers from 
DX Engineering and decide for yourself!

Note: During and after your amplifier's warranty period, DX Engineering 
will provide service and repair for ACOM amplifiers. A repair fee will 
be charged for services outside the warranty period.