NTI MegActiv MA305FT Operating Manual

Safety instructions
Thunderstorms and overloads
The inputs of the MegActiv MA305FT are triple-protected against static charge. For coarse protection a fast 60
Gas Arrestor (max. 1kA 8/20μs) is used, followed by an 8KV ESD protector according to IEC 61000-4-2 Level 2
/ max. 30ns and another 4KV fine protection.
Disclaimer - please note
The integrated over-voltage protection circuit will not protect your equipment from a lightning strike in the event
of a direct hit to the house or the local vicinity. Irrespective of the loop size, high voltages can be induced which 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 and subsequent damage
of transmitting (ham radio stations), and thunderstorms etc., can be avoided by disconnecting the antenna cable.
In the vicinity of strong FM transmitters, please note the following:
An integrated FM band-stop filter with extra low-pass is present at the input of the MA305FT. Thus strong
interference can be effectively suppressed by up to 20dB. In the immediate vicinity of very strong transmitters (circa
a distance of a couple of hundred meters) the antenna electronics and/or connected receivers can occasionally be
overloaded. This is possible whenever the output level is stronger than -20dBm. Weaker signals may be suppressed
or phantom signals may be produced. As the antenna receives up to 300 MHz, signals outside the shortwave range
can also potentially effect the antenna electronics in a similar way.
TECHNISCHE DATEN
Antenna:
Power supply: 5 - 15V DC (max. 40mA; typ. 10mA)
Connector: BNC / 50 Ohms
Radiator Connector: M6-screws (stainless steel)
Frequency response (-3dB) and nominal gain:
FM-Trap off
9kHz - 300MHz & nom. 3dB Gain
FM-Trap on
9kHz - 52MHz & nom. 3dB Gain
88 - 108MHz typ. -20dB attenuation
IP3: > typ. +30dBm (@7.00 & 7.20MHz)
IP2: > typ. +50dBm (@7.00 & 7.20MHz)
Size / weight: 98 x 90 x 38mm / 0.12kg
Power inserter CPI1500UNI:
Power supply: max 15VDC/max. 400mA current-limited and protected against polarity reversal
Connectors: 2.1mm DC-power socket (positive inner);
Alternatively via optional USB > DC power plug PartNo: 00163-1
HF: BNC
Size/ eight: 86 x 70 x 29 mm / 0.09 kg
Scope of delivery:
MegActiv 305FT
Power inserter CPI1500UNI
200mm flexible radiator
© 2019 • Subject to technical modifications; no responsibility is accepted for the accuracy of this information.
All descriptions are for informational purposes only and cannot be understood as express promises concerning
the properties of the products or as warranties. All trademarks acknowledged.
MegActiv
Issue 8/2020
9kHz - max. 300MHz
®
Manufacture: Rudolf Ille Nachrichtentechnik • www.nti-online.de
Distributor:
Bonito - Dennis Walter • Gerichtsweg 3 • D-29320 Hermannsburg • www.bonito.net
MA305FT
Active Antenna
& FM-Trap
Operating Manual
Version V2.1