MFJ's new Passive Preselector has extremely high dynamic
range! It improves the performance of nearly any HF or shortwave
receiver/transceiver. It vastly improves the most expensive receivers.
Especially helpful to those with broadband front-ends that are prone to
overload.
Protects your sensitive receiver input from damage (including switching
diodes and attenuator resistors) caused by very strong signals from
multi0transmitter, multi-band operation -- contests, field day, nearby
hams, CBers, TV/FM/AM stations.
It eliminates phantom signals by suppressing strong out-of-band signals
that cause intermod, blocking and cross modulation. Completely
eliminates second order intermod problems caused by strong out-of-band
shortwave broadcast signals mixing and producing unwanted in band
signals.
MFJ's unique Hi-Q series tunable circuit gives you superb performance.
The tunable series tuned circuit works into a very low impedance formed
by broadband toroid transformers.
Has narrow bandwidth, excellent stopband attenuation, very low loss,
constant bandwidth and gain over each band. Excellent attenuation in
adjacent contest bands.
The entire 1.6 to 33 MHz HF band is covered in five overlapping bands.
An RF sense transmit/receiver switch w with adjustable time delay
automatically bypasses your MFJ-1048 when you transmit. Also has PTT
line T/R switching. Plugs between antenna and transceiver.
Fully shielded metal enclosure. Tough black finish. |
