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LA350 |
| KRÁTKOVLNNÁ AKTÍVNA LOOP ANTÉNA |
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LA350 |
| KRÁTKOVLNNÁ AKTÍVNA LOOP ANTÉNA |
The LA350 is a compact active loop aerial specifically designed to provide good reception when away from the main monitoring location or when large external aerials are not practical. Compact, but achieving high performance, featuring an internal high-gain amplifier (13.5dB) and excellent overall strong signal handling (high IP3 +30dBm). The LA350 comprises of a small control box with front panel power switch and LED. The top of the control box has a 6.3mm jack socket to accept any one of the four elements (two supplied as standard). The rear of the control box has a 1.3mm power socket (operation is from 12V DC, centre positive) and a BNC socket for connection to a receiver. The LA350 is supplied with two elements (providing coverage from 3.0MHz to 30MHz), a BNC-BNC coax lead and AC power unit (may not be provided in certain market areas):
The elements are mounted on a jack plug which enables quick & easy swapping between elements and rotation to exploit the excellent directivity of the elements in peaking and nulling signals (ideal for minimising the effects of unwanted interfering local terrestrial signals and noise), of course the directional characteristics when listening to distant sky-wave signals will not be as pronounced as local ground-wave propagation. The elements feature a High-Q poly-variable capacitor so that each element may be 'tuned' to peak the wanted frequency while achieving maximum rejection of unwanted out of band signals - valuable additional selectivity for your receiver's front-end stages. Optional bar elements are available for the MW and LF bands:
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