144 MHz preamp

Model: MVV 144-VOX

Description:

Low-noise, largesignal-firm 2m mast preamplifier. The weatherproof ABS plastic housing can be fixed with a clamp to masts with up to 56 mm in diameter. All screws as well as the handle of the mast clamp consist of stainless VA steel.

Within the mast housing the amplifier is put in a shielded metal housing.

The low noise factor is achieved by the use of a low-noise dual gate MES FETs, which has a good large signal.

The transmit-receive switching starts from a transmitting power of 100mW automatically via HF-VOX, but can also be controlled via PTT as all our preamplifiers. HF-VOX possesses an adjustable switch-off delay, which preserves the relay contacts in SSB mode.

Technical Data:

frequency range: 144 - 146 MHz

noise factor: 0,6 - 0,9 dB

gain: ca. 10-20 dB, adjustable

tranmit-receive-switching: automatic via HF-VOX or PTT-controlled

certified transmitting power:

VOX-mode: 350 Watts SSB

200 Watts FM

PTT-mode: 750 Watts SSB

250 Watts FM

sensitivity HF-VOX: about 100 mW

insertion loss in transmit mode: about 0,3 dB

current supply: 13,5 Volt, ca. 50 mA

supply: over separate line or remote supply over coaxial cable

HF-connection type: N - standard (socket)