MFJ-1622 Instruction Manual
Window Mount Antenna
7
[ ] 4. Each installation may require different
lengths of counterpoise wire and tap
positions. The greatest factor in
determining the counterpoise length will
be the height above ground level. The
higher the installation, the closer the
counterpoise length will need to be to a _
wavelength = 468 / frequency (MHz).
[ ] 5. Operation on the 6 and 2 meter bands
requires that the top section of the whip be
retracted completely. This may vary with
some installations. The counterpoise
length should be less than 5 feet.
Technical Assistance
If you have any problem with this unit first check the appropriate section of this manual. If the
manual does not reference your problem or your problem is not solved by reading the manual,
you may call
MFJ Technical Service
at
662-323-0549
or the
MFJ Factory
at
662-323-5869
.
You will be best helped if you have your unit, manual and all information on your station handy
so you can answer any questions the technicians may ask.
You can also send questions by mail to MFJ Enterprises, Inc., 300 Industrial Park Road,
Starkville, MS 39759; by Facsimile (FAX) to 662-323-6551; or by email to
. Send a complete description of your problem, an explanation of
exactly how you are using your unit, and a complete description of your station.
Table 1
Counterpoise Length at Ground Level
MHz
Coil #
Counterpoise
Length (Ft)
144.0
0
5’
50.1
0
5’
28.00
1.75
7’ 9”
24.89
1.5
8’ 5”
21.00
5.5
10’ 6”
18.068
5
11’
14.00
9
18’
10.1
14
19’ 5”
7.00
25
33’