MFJ MFJ-1770 Manual de usuario

MFJ PORTABLE FOLDED DIPOLE ANTENNA

MODEL NO. BAND COVERAGE

MFJ-1770 15 Meter

MFJ-1771 17 Meter

MFJ-1772 20 Meter

MFJ-1773 30 Meter

MFJ-1774 40 Meter

MFJ-1776 6 Meter

GENERAL DESCRIPTION

The antenna is a no-compromise full-size folded dipole antenna designed to give your QRP

station real on-air "punch". Fabricated almost entirely from tough 300-Ohm twinlead, this

antenna is lightweight, easy to transport, and simple to erect. Best of all, you'll never need an

antenna tuner; a 50 Ohm matching network is built right into the antenna's feed system. A

random length of 50 Ohm coax from your rig to the end of the antenna feed can be added if you

need more feedline.

INSTALLATION

This antenna is very light in weight; inexpensive nylon "sash" cord is all you need to support it.

Simply tie your end-lines through the end-holes provided in the antenna's twinlead insulation.

Do not use conductive wire for end-lines this will detune the antenna.

For best results, find supports that are high and in the clear. If you have a choice, run your end-

line over the crown of a tree rather than attaching it to a low branch. If you have only one high

support, set the antenna up as a sloper or inverted "V".

Run the feedline at a right angle to the antenna for at least 30'. Avoid running the balanced

portion of your feedline (the 300-Ohm flat line) next to your tower or other metal structures. This

may detune the antenna and degrade efficiency. Use coax for feedline runs inside your house.

Although designed for QRP rigs, the antenna will handle full RF output from a 100-Watt

transceiver (do not exceed 100 Watts).

WARNING:Constructing or erecting amateur radio antennas in locations where they may come

into contact with electrical power may result in accidental injury or death.

BAND LENGTH A LENGTH B LENGTH C LENGTH D Cs

6 Meter 9' 1" 7' 7.25" 11.5" 7' 7.5" 22pF

15 Meter 22' 0.5" 18' 6.50" 2' 3.5" 26' 8.5" 51pF

17 Meter 25' 10" 21' 8.75" 2' 8.5" 26' 3.5" 60pF

20 Meter 33' 0.0" 27' 9.25" 3' 5.5" 25' 6.5" 75pF

30 Meter 46' 2.5" 38' 10.5" 4' 10" 24' 2.0" 107pF

40 Meter 65' 5.5" 55' 0.5" 6' 10" 22' 2.0" 151pF

Este manual sirve para los siguientes modelos

5

Tabla de contenidos

Otros manuales de Antena de MFJ

Manuales populares de Antena de otras marcas

Alfa Network

Alfa Network APA-L01 Manual de usuario

Naval

Naval PR-422CA Manual de usuario

Feig Electronic

Feig Electronic ID ISC.ANTH200/200 Series Manual de usuario

TERK Technologies

TERK Technologies TV44 Manual de usuario

Directive Systems & Engineering

Directive Systems & Engineering DSE2324LYRMK Manual de usuario

HP

HP J8999A Manual de usuario

MobilSat

MobilSat MSP-S Manual de usuario

Steren

Steren ANT-UHF 13 Manual de usuario

Novatel

Novatel 600-G Manual de operación

Radio Shack

Radio Shack Amplified VHF/UHF/FM Indoor Antenna Manual de usuario

TRENDnet

TRENDnet TEW-AO12O Manual de usuario

Radio Shack

Radio Shack 15-1837 Manual de usuario

CommScope

CommScope CMAX-OMFX-43M-I53 Manual de usuario

Ramsey Electronics

Ramsey Electronics DAP25 Manual de usuario

COBHAM

COBHAM SAILOR 800 VSAT Manual de uso y cuidado

Trango Systems

Trango Systems AD900-9 Manual de usuario

Steren

Steren ANT-100 Manual de usuario

Proxim

Proxim 5054-PA-23 Manual de usuario