MFJ Enterprises MFJ-1675T Instruction Manual

These HF antennas are designed to operate over the phone
portion of HF bands with a typical VSWR of 2:1.
MFJ offers the following HF Mobile Ham-tenna
MFJ Model No.
MFJ-1675T
MFJ-1640T
MFJ-1630T
MFJ-1620T
MFJ-1617T

Tuning Instructions:

Insert the whip into the lower section ferrule about four
inches and tighten the set screw. Screw the ferrule/whip
assembly into the lower fiberglass section. Install a VSWR
meter at the transceiver and apply 10 or 25 watts of power.
Adjust the VSWR meter and output frequency for lowest
VSWR reading, indicating resonance. If resonant frequency
is higher than desired, loosen the set screw and extend the
top whip until the desired resonant frequency is found. If
resonant frequency is too low, loosen the set screw and
adjust the whip further into the lower section. For best
results, adjustments should be made in small increments.
Caution: If required, cut off the bottom of the whip to ensure
it does not extend down into the coil. Failure to observe this
precaution will cause extreme heat damage and void the
warranty.
VSWR: At resonance, the VSWR should be 1.5:1 or less
when properly matched. When tuning is complete, tighten
the set screws securely.
NOTE: Bandwidth and VSWR will vary due to mounting
location. Roof mounts, trunk groove mounts, and trunk lip
mounts are recommended. The poorest mount is a bumper
mount. If your installation has a VSWR over 1.5:1 at
resonance or you need to operate over a greater bandwidth,
a tuner may be required.
STORAGE: To store your HF Ham-tenna
ferrule/whip assembly from the lower fiberglass section.
Note: If only the whip is removed, repeat tuning procedure
before using again.
...The World Leader in Ham Radio Accessories
300 Industrial Park Road, Starkville, MS 39759 USA
Phone: (662) 323-5869 Fax: (662) 323-6551
Instruction Manual
HF Mobile
Ham-tenna

Power Rated at 250 Watts P.E.P.

Band
75 Meter
40 Meter
30 Meter
20 Meter
17 Meter
MFJ Enterprises, Inc.
http://www.mfjenterprises.com
Made in the U.S.A.
TM
Whips
MFJ Model No.
MFJ-1615T
MFJ-1612T
MFJ-1610T
MFJ-1606T
MFJ-1602T
TM
TM
whips:
Band
15 Meter
12 Meter
10 Meter
6 Meter
2 Meter
, unscrew the