Komunica HF-PRO-2 User manual

P o r t able M ul t i- B and HF
An t enna H F - P RO - 2
Specifications
F re qu e n c y range
7 - 30 + 50 M H z
M ax . P o wer R a t i ng
130 W ( SS B )
I m p e d a n c e
50 Ω
L e ng th
2,6 m
Wei gh t
425g r
C onn e c t o r
P L - 259
Type
Loaded 1/4 wave vertical on 7-30MHz
Full 1/4 wave vertical on 50Mhz.
A ntenna elements
Supplied are :
A L ar g e W h i p = P W R - 01002 (used for 7 - 30 M H z )
A Short Whip = PWR-01003 (used for 50MHz )
C o il form c o m po si t i on
FR P ( F i b er R ei n f o r c e d P o ly m er)
Notes fo r Using the Antenna
To use your HF-PRO-2® from Komunica® antenna correctly, please read these instructions thoroughly before use and keep this
document on-hand for later reference.
The HF-PRO-2® from Komunica® is intended for use by Radio Amateurs only within their authorised frequency bands. For use on
some amateur bands an antenna tuning unit may be required.
Please note:
1. The HF-PRO-2® has been designed as a stationary antenna and is not designed for use on a moving vehicle.
2. You are recommended to only install the antenna on your vehicle with a mount that is earthed or on a magnetic base once you
have parked your vehicle.
3. The HF-PRO-2® should not be permanently installed as a home station antenna as it is not designed to withstand rain and winds.
4. Do not touch the antenna during transmission. Doing so can cause an electric shock and/or an RF burn.
5. When mounting or detaching the antenna, take care not to cause personal injury with the whip.
6. To get the best performance from the HF-PRO-2® use of an Antenna Coupler (ATU) is recommended .
Desc r iption
1.The HF-PRO-2® can be operated on a wide frequency range of 7-30 and 50MHz. This antenna is to be used for “Static mobile” or
portable operation, never when you are mobile as mechanically the antenna has not been designed for use on moving vehicles. It
is the owner’s responsibility to use this antenna only in an appropriate and responsible manner.
2.The operational frequency is easily adjusted by moving the loading coil up or down as required and by using an antenna tuning
unit if one is connected.
3.When operating on 50MHz, please ensure that the short top element (PWR01003) is installed above the lower element
(PWR01001) and that the coil is slid down to its lowest point (i.e. fully retracted).
4.Thanks to the fiber reinforced polymer (FRP) material with which Komunica® has manufactured its HF-PRO-2®, the antenna is
both lightweight & flexible and is small when packed away making it easy to carry when not in use.

Adjustment
1. Connect your HF-PRO-2® to a
magnetic base or SO239 type
mounting bracket with a good
connection to the chassis of your
vehicle. Install the appropriate
radiating elements to the body of the
antenna (short top section when
operating on 6 metres, long top
section for the HF bands).
2. To select the right frequency, you’ll
need to set the position of the antenna
body scale to coincide with the value
shown in the chart on the right.
3. Loosen the locking ring half a turn by
hand.
4. Slide the antenna body to the
required scale marking for your
frequency and tighten the locking ring
half a turn by hand again. It is
important for electrical connectivity as
well as stability, that the locking ring is
re-tightened. (Do not use any tools
such as pliers as the antenna may be
damaged).
5. When fine-tuning always perform
your TX tests with the RF power set as
low as possible. Move the coil up or
down until the lowest VSWR at the
desired frequency is obtained.
6. Once the tuning is OK, increase the
power up to your operating power.
(Max. Power Rating: 130W - SSB).
7. When adjusting for the 50MHz Band,
lower the loading coil to the bottom,
remove the large upper element
(PWR01002) if fitted and replace it
with the short element (PWR01003).
Recommendations
When transmitting, use of an antenna
tuner will simplify operation.
Due to its broadband design in some
cases radiation efficiency of the
antenna may be reduced.
Although the HF-PRO-2® has been
manufactured under strict quality
control, if damage is caused in transit,
please contact your dealer promptly.
Do not use this antenna if it is
damaged.
Design and specifications of this antenna can be
changed at any time without previous notice.
Coil position chart
This chart describes the settings for the antenna
when mounted on a magnetic mount in the
centre of the metal roof of a vehicle. These
valuescanbedifferentiftheantennaismounted
elsewhere on the vehicle or if used off the
vehiclewithoutthemetalroof actingasaground
plane (example on a balcony rail or tripod
mounted). It is recommended that after
installation you test your mounting points
effectiveness as a ground plane by the use of an
antenna analyser or an SWR bridge and low
power from your transmitter.
If you receive an SWR reading above 2:1 you
should investigate a different mounting point or
use an antenna tuning unit to produce a better
match to the HF-PRO-2® .
Installation options.
1. Install the HF-PRO-2® onto a SO-239
socket mount, where there is a good ground
plane such as with a magnetic base mount
in the centre of the vehicle’s roof, using a
trunk or bonnet-lip mount or luggage or
bull-bar rail. Remember the mounting point
needs to provide an effective ground plane
for the antenna to work against. If no other
option is available, feeding the antenna
with 10 or more metres of co-axial cable
may work with the coax-screen acting as the
counterpoise.
2. Your HF-PRO-2® may also be mounted on
a metal railing such as on a balcony. In such
a case a L-shaped bracket will need to be
fabricated that is both strong enough to
support the antenna and provide an
electrical connection to the rail for the
antenna.
You may choose to use an antenna tuner
together with the HF-PRO-2® for maximum
flexibility.
Errors and omissions excepted (E & OE).