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Picture : JM CHERRY |
A Drake matching network is a worthwhile addition to any amateur station where peak
performance is desired. Basically identical, except for power handling capabilities, the
MN-4 and MN-2000 enable feedline SWR’s of 5:1 to be matched to the transmitter. If
input impedance is purely resistive, even higher SWR’s can be handled.
Besides
presenting a 50 ohm load to the transmitter, the Matching Network’s built in RF
wattmeter allows accurate and continuous power measurement and VSWR indication. The
advanced wattmeter circuitry yields frequency-insensitive readings from 2 to 30 MHz, and
accuracy until now obtainable only in expensive wattmeter.
SPECIFICATIONS
 | Frequency Coverage: 3.5 to 4.0 MHz, 7.0 to 7.3
MHz, 14.0 to 14.35 MHz, 21.0 to 21.45 MHz, 28.0 to 29.7 MHz |
| Input Impedance: 50 ohms (resistive) |
| Load Impedance: 50 ohm coax with VSWR of 5:l
or less (any impedance angle),
75 ohm coax at a lower VSWR can be used. |
| Meter: Reads forward power in watts,
or VSWR |
| Insertion Loss: 0.5 dB or less on each band
after tuning |
| Power Capability: 200 watts rf continuous |
| Wattmeter Accuracy:+-(5% of reading + 1% of full
scale) |
| Dimensions: 5.5"H x 10.8"W x
8.5"D - (14 x 27.3 x 21.6 cm) |
| Shipping-Weight: 9
Ibs. (4,1 kg) |
| Shipping-Size:
11.8"x 8"x 10.3" - (29.8 x 20.3 x 26 cm) |
| FRONT PANEL: Resistive Tuning, Reactive
Tuning, VSWR Calibration, Band switch, Watts/VSWR Selector Switch |
| REAR PANEL: Ground Post and three SO-239
connectors: One input, two outputs |
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