Dentron MT-2000A and MT-3000A
These are efficient antenna tuners capable of handling full legal limit power for use with amateur radio.
- Freq Coverage: 1.8 MHz - 30 MHz continuous
- Power Handle: 3000 watts P.E.P.
You should connect only one antenna at a time to the MT-2000A. The MT-3000A will accommodate multiple simultaneous connected antennas.
Although you can physically connect an antenna via the PL-239 and another antenna via the balanced line connector to the MT-2000A, you should not do this as there is no way to select between them from the unit and consequently you will have problems.
Specs
- 1.8 to 30 MHz Continuous
- Input Z : 50 Ohms resistive
- Output Z: Coax 50 Ohms nominal but may be a few Ohms to HI-Z
- Long Wire: High or Low Impedance
- Balanced Line (4:1 Balun inside tuner cabinet): 75 to 600 Ohms
- POWER RATING: 3000 Watts PEP
- INSERTION LOSS: 0.5 dB or less after tuning
- Dimensions: 5.5" H X 14" W X 14" D
- Weight: 18 lbs
- TRUE BYPASS SWITCH is an actual pass- through
- Antenna grounding switch included
Inductor Guide
Inductor selection is a starting point for you to tune to resonance with your own antenna setup.
Dentron recommends setting both capacitor selectors (Transmitter Matching) and (Antenna matching) to setting 5 before trying to locate the correct inductor setting for the frequency. Watch for the highest noise/signal level on the S meter. When the best inductor is located then fine tune using the capacitance tuning dials. If tuning for the higher bands 20, 15 and 10 set the "transmitter" capacitance to 8 instead of 5.
(A) on the inductor is the highest frequency and (R) is the lowest frequency on the inductor switch.
The following guide is for an Inverted V 66½' on each leg @ 45degrees for 75-meter
band frequency inductor cap and ind select ----------------------------------------------------------- 160 1990 R 6.7, R, 5.0 80 3980 K 4.0, K, 3.0 1:1 60 40 20 15 10 -----------------------------------------------------------
FOR UP TO 10 MHZ: Set both capacitors for mid range (5). Adjust Inductor for maximum receive signal or background noise. Apply less than 100 Watts and adjust for minimum SWR.
FOR 14 MHZ AND ABOVE: Set both capacitors to 8. Adjust Inductor for maximum receive signal or background noise. Apply less than 100 Watts and adjust for minimum SWR.
MT-2000A specific
The TUNER-BYPASS SWITCH ONLY AFFECTS COAX CONNECTOR. It does not function on open wire or balanced connections. Do not connect more than one antenna to the MT-2000A.
