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AMT3000 Specifications
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Frequency Coverage:
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530
kHz - 1700 kHz in 10 kHz steps or 522 kHz - 1710 kHz in 9 kHz steps,
depending on order option
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Frequency Selection Method:
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8-position
DIP switch
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Frequency Tolerance @ 25ºC:
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±.003%
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Modulation Type:
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Amplitude
Modulation (AM)
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Maximum Modulation Level:
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100%
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Power Input to Final RF
Stage:
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100
mW
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Antenna:
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118”
wire (supplied with kit)
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Antenna Matching:
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Tunable
pi-network. Matches high impedance antenna to low-impedance RF output stage.
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Output Tuning:
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4-position
DIP switch selects inductance combination, adjustable ceramic trimmer
capacitor peaks resonance.
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RF Output Metering:
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Test
points on circuit board provide DC voltage to user-supplied 10 megohm/volt voltmeter.
Measured voltage is maximum at resonance.
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RF Grounding Options:
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Jumper
plug options for including/excluding RF isolation inductors in power supply
and audio source ground paths.
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Audio Response:
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20
Hz to 20 kHz ±1 dB
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Audio Treble Boost:
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+8
dB, boost midpoint at 2 kHz. Jumper
plug option.
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Audio Distortion:
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Less
than 0.5% THD through audio stages.
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Minimum Audio Input Level:
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200
mV RMS for 100% modulation (input gain control at max).
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Audio Compression:
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Compression
ratio adjustable from 1:1 to 5:1.
Attack time less than 1 ms.
Medium release time suitable for both voice and music.
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Audio Limiting:
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Adjustable
threshold. 15:1 compression above
threshold.
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Front Panel Controls:
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Audio
input gain, modulation level, compression ratio.
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Rear Panel Jacks:
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2
RCA audio in jacks, RCA antenna/ground jack, 2.1 mm power input jack.
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Power Consumption:
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120
VAC, 2 watts
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Circuit Board:
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5”W
x 3.9”D x .062”H FR4, two layers, 1 oz. copper, top and bottom solder
masks, top silkscreen.
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Enclosure:
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6.1”W
x 4.2”D x 1.5”H ABS plastic. Drilled
and labeled front and rear panels.
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