Vectronics VEC-603 User Manual

VEC-603 6 Meter Antenna Tuner

General Information

The VEC-603 6 Meter Antenna Tuner for The Magic Band gives you low SWR
with practically any coax fed antenna -- mobile whips, dipoles, verticals, vees,
random wires, beams.

With low SWR, your rig will be more efficient; you'll get more power out of
your 6 meter tranceiver and into your antenna for more DX, it will run cooler
and last longer, and your expensive tranceiver will be protected from
overheating due to high SWR.

The VEC-603 handles 100 Watts FM and 200 Watts SSB PEP. It works with
ALL solid state and tube rigs and is perfect for home and mobile stations.

Installation

The VEC-603 installs between your 6 meter tranceiver and your antenna. An
external Power/SWR meter is necessary for proper operation of the VEC-603.
Connect your 6 meter transceiver to your Power/SWR meter. Then connect the
Power/SWR meter to the TRANSMITTER SO-239 of the VEC-603. The coax
from the antenna is then connected to the ANTENNA SO-239 of the VEC-603.

Operation

1. Set TRANSMIITER and ANTENNA controls to 5 (capacitors half opened).

2. Apply enough transmitter po wer to give a n ade qua te ind ica tion o n your SW R

meter. Do not apply full power while tuning for minimum SWR!

3. Referring to your external Power/SWR meter, adjust the TRANSMITTER

control for a drop in SWR.

4. Adjust the ANTENNA control until minimum SWR is achieved.

Note

: Since the TRANSMITTER and ANTENNA controls interact, they must

be adjusted alternately until minimum SWR is obtained.

5. After minimum SWR is achieved, check output power with a voltmeter,

relative power meter or with an antenna current meter. Tune the ANTENNA
tuner for maximu m power out put; make sure SWR is at minimum.

VEC-603 Front Panel

VEC-603 Rear Panel

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 Vectronics at 601-323-5800. 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 Vectronics, 1007 HWY 25 South,
Starkville, MS 39759 or by FAX to 601-323-6551. Send a complete description
of your problem, an explanation of exactly how you are using your unit, and a
complete description of your station.