door jack1956 » 21 feb 2010, 01:55
Staat trouwens op 2de hands .nl een emtron dx-1d van 750 watt/1000 watt pep te koop.
Te koop:
EMTRON DX-1d HF Linear Amplifier in nieuwstaat.
Specs:
Frequency Coverage: Complete (manually tuned) coverage of the nine HF amateur bands.
Transmitting Modes: Both continuous and low duty cycle modes are supported. That is, the DX-1d supports SSB, CW, AM, FM, RTTY and SSTV.
Output Power: Typical 750 watts carrier or up to 1000 W PEP
Drive Power: Nominal 40-60 watts for full rated output.
Input Impedance: Nominal 50 ohm passive impedance, unbalanced. VSWR 1.4:1 or less.
Output Impedance: Nominal 50 ohm passive impedance, unbalanced. VSWR 2.6:1 or less.
Distorsion: Third order intermodulation products are more than 35 dB below rated output.
Harmonics: Harmonic output is better than 50 dB below the rated output.
Fault Protection: The comprehensive fault protection systems include circuitry to monitor:
plate current: should the plate current exceed a safe value, the amplifier goes to standby mode for 2 minutes.
screen grid over-current: Absolute tube protection is offered with visual warning and reduced power level being enabled if the screen current exceeds a pre-set limit.
temperature: Should the tube temperature exceed a specific level, amplifier operation is suspended until the temperature drops to a safe level.
Operation Protection:
Overdrive protection: Should the DX-1d be overdriven, a LED warning indicator will light up when the linearity limit is reached. If the drive is increased further, a 2 second cut off (by-pass) will follow.
SWR protection: Should the DX-1d sense an SWR exceeding 2.6:1, a LED warning indicator will light up, simultaneously with a 3 secon cut off.
Metering: The front panel moving LED display systems indicate:
"Moving light" LED indicators:
output power
reflected power
screen gris current (positive/ negative)
plate voltage
plate current
Five single LED's:
on air
ready
fault
overdrive warning
SWR cut-off indicator
ALC: Negative going, adjustable output level.
EBS: Electronic Bias Switch - automatically switches the standing current (about 0.3 A) to a lower ("pre-bias") value - when there is no input drive
Pre-Bias: A small current will flow in the tube when the amplifier is keyed on, but there is no modulation. This will prevent a harsh sound at the beginning of each word, when the EBS is activated and the tube goes through a non-linear zone, before reaching the correct initial bias.
QSK: Is an option that makes possible the antenna switching at very fast rate - typically 3ms switching time in each direction. FACTORY INSTALLED ONLY.
Soft Start: When switched on, the mains power is gradually applied to the transformer, over a period of about 5 seconds, to avoid the high in-rush current typical for such high loads.
Cooling: forced air cooling.
Operating Temperature: 0 to 40º Celcius.
Fusing: Two 15A normal acting fuses on the rear panel.
Dimensions: 380mm wide, 180mm high, 380mm deep.
Weight: 20kg
Natuurlijk werkend te zien en uit te testen.
Vaste prijs.