MegaDipol
MD300DX
Active Dipole Antenna Amplifier
9kHz - max. 300MHz
Operating Manual
Version V1.2
Issue 06/2018
Manufactured by Rudolf Ille Nachrichtentechnik • www.nti-online.de
Distributed by
Bonito - Dennis Walter • Gerichtsweg 3 • D-29320 Hermannsburg • www.bonito.net
TECHNICAL DATA
Antenna:
Power supply:10 - 15V DC (max. 40mA) via power inserter or 5V supply via USB with
recuced IP-values of 3-5dB and same gain
Connectors and impedance: BNC / 50 Ohms
Radiator connections: M5 screws (stainless steel)
Frequency response (-3dB) and nominal gain:
• 0dB Gain: 9kHz - 300MHz
• 3dB Gain: 9kHz - 130MHz
IP3: typ. +30dBm (@7.00 & 7.20MHz)
IP2: typ. +78dBm (@7.00 & 7.20MHz)
Size / weight: 98 x 90 x 38mm / 0.12kg
DualPower Inserter CPI1000DP:
Power supply max. 15V DC / max. 400mA current-limited and protecteted against
polarity reversal
Connectors: 2.1mm DC power socket (positive inner; alternatively via USB (USB-B port)
Size / weight: 86 x 70 x 29mm / 0.09kg
Scope of delivery:
• MegaDipol MD 300DX
• DualPower Inserter CPI1000DP
• 2x 2.5m long radiating elementc (PVC-coated, salt water resistant stainless steel ropes
• 2x insulators for installation (weatherproof plastic material with 4.5mm fixing hole)
Safety instructions
In case of thunderstorms or overload
Both inputs of the MD 300DX have an input protection circuit against static discharges with ESD protectors up
to 8kV and thus conforming to IEC 61000-4-2 Level 2/max 1ns and an additional 4kV fine protection
Disclaimer - please note
The integrated overvoltage protection circuit will not protect your equipment from a lightning strike in the event
of a direct hit to the house or the vicinity. Irrespective of the radiation element lengths, high voltages can
permanently damage the antenna electronics and/or connected devices. For this reason, liability for these
devices is excluded. Other types of damage caused by overloads or by direct HF-exposure (transmitting
antennas) are also excluded from the warranty.
In case of absence from home, the potential danger of transmitting (ham radio stations), and thunderstorms
etc., can be avoided by disconnecting the antenna cable to avoid any damage.
In the vicinity of strong transmitters, please note also
In the rare case of immediate vicinity (less than 100m) to very strong transmitters, overdrive effects can
occur, which may overload the antenna electronics and/or connected devices. This can happen in the case of
more than -10dBm output level. Weak signals may surpressed and phantom signals can occur.
Since the reception range of the MD 300 X is 300MHz max, signals outside the shortwave spectrum can also
cause such negative effects.
®
NTi
© 2018 • Subject to technical modifications; no responsibility is accepted for the accuracy of this information. All descriptions are for
informational purpose only and cannot be understood as express promises concerning the properties of the products or as warranties. All
trademarks acknowledged.
CAUTION:
This is strictly a receive-only antenna. Never
connect it to a transmitter. This would damage
your antenna and would also void your
guarantee. Do not place it directly next to a
transmitting antenna.
