ok2bwn MICROFOX HF User manual

instruction manual
MICROFOX HF
MINIATURE HF ARDF TRANSMITTER

Read carefully this manual before attempting to operate the transmitter.
Save this instruction manual. This instruction manual contains important safety
and operating instructions for the MICROFOX HF.
IMPORTANT!
This transmitter was especially designed for training purpose, foxoring competitions,
promotion events and other special ARDF events. Frequency, transmitted code, keying
speed and timing schedule are widely adjustable. Integrated antennas make the
installation very easy − just hang it at a tree branch.
Small size and weight, low consumption and price, rugged house and easy operation
− these features make this transmitter an ideal device for all competitors or trainers.
INTRODUCTION
Accessories included with the MICROFOX HF:
− this manual
UNPACKING
CONTENTS
INTRODUCTION
IMPORTANT
CONTENTS
UNPACKING
1TRANSMITTER DESCRIPTION
2PRECAUTIONS
3INSTALLATION
Unpacking
Before operating
Parameter settings
Clock start
Transmitter installation
Foxoring transmitter installation
4MAINTENANCE
5TROUBLESHOOTING
6WARRANTY, SERVICE
7SPECIFICATIONS
Do not let exhausted batteries in the transmitter! If you do not intend to use
the transmitter for a longer period, remove the battery. If the battery leaked out
already, remove it immediately, wash the transmitter with a lots of warm water, then
dry it thoroughly.
Do not connect any voltage sources except for the assigned battery to the
transmitter!!
2PRECAUTIONS
1TRANSMITTER DESCRIPTION
ANTENNA
INDICATORS .
RED: ON AIR
GREEN: LOGIC UNIT RUNNING
COUNTERPOISE
MAIN
SWITCH
FREQUENCY
SETTING
PARAMETER
SETTINGS .

3INSTALLATION
 
 
 Before operating
Connect 9V battery or accumulator.
 
 
 Unpacking
After unpacking, check carefully the transmitter. In the case of any damage do not
use the transmitter and contact immediately the manufacturer.
 
 
 Parameter settings
Open the transmitter house. Parameters (transmitted code, keying speed, timing
schedule, operation mode and frequency) are set by DIP switch according to the
following table:
This table can be found also on the inner side of the transmitter cover.
 
 
 Transmitter installation
for foxoring
Unfold approx. 50 cm of antenna
wire and wind the rest of both wires
around the transmitter body. Install
transmitter so that the transmitter
body sits on the ground and the
antenna stands up. The transmitter
should be audible from 50−100m
distance. Check the audibility with
the receiver of average sensitivity.
Be sure that the antenna is in the
free air, otherwise the “final approach“
of competitors could be very difficult!
 
 
 Transmitter installation
Unfold the antenna (both wires)
and hang the transmitter so that the
antenna (wire close to the indicators)
is up and the end of lower wire is
close to the ground. The whole
radiator should be in free space
(especially during the rain). With the
antenna installed as this, the
transmitter will be audible from the
distance over 1 km.
 
 
 Clock start
The transmitter is to be started at the beginning of its transmitting period by turning
on (ON/OFF switch). Before this, you must set the timing (DIP switch 8−9) and select
operation mode (DIP switch 10). Other parameters (frequency, code, keying speed)
can be set any time, even while transmitting.
TRANSMITTER PARAMETERS SETTING (I=ON, 0=OFF)
code 12345 code 12345 code 12345 speed 67
A 00000 N I0II0 MOE 0I0II 100 00
B I0000 O 0III0 MOI II0II 70 I0
C 0I000 P IIII0 MOS 00III 50 0I
D II000 Q 0000I MOH I0III 35 II
E 00I00 R I000I MO5 0IIII timing 89
F I0I00 S 0I00I MO IIIII 60/240 00
G 0II00 T II00I 30/120 I0
H III00 U 00I0I 60/60 0I
I 000I0 V I0I0I 12/48 II
J I00I0 W 0II0I
K 0I0I0 X III0I operation 10
L II0I0 Y 000II continuously 0
M 00II0 Z I00II intervals I
freq 1234
3520 III0
3530 I000
3550 II0I
3560 I0I0
3570 0I00
3580 IIII
3590 I00I
3600 0II0
3610 0000
3620 I0II
3630 0I0I
3640 00I0
PARAMETERS ON
OFF
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FREQ
9VBATTERY/ACCU
cca 2 m
cca 0,5 m

Keep the transmitter dry and clean. If the transmitter becomes wet, dry it by the
clean cloth, open it and let it dry in a room temperature. Never use strong heaters!
If the transmitter becomes dusty or dirty, clean it with a brush or a dry, soft cloth.
Avoid the use of strong chemical solvents such as benzine or alcohol to clean the
transmitter.
The transmitter needs no maintenance above the mentioned procedures.
4MAINTENANCE
The following list is designed to help you correct problems which are not equip−
ment malfunctions. If you are unable to locate the cause of aproblem or solve it
through the use of this list, contact the manufacturer.


The transmitter is not audible (green LED flashes)
Possible cause: the transmitter is out of the transmitting period or out of
band. Note that only 12 combinations of FREQ DIP switches result in
frequency within 3,5 MHz band.
Solution: check for the transmitter settings and start it again


The transmitter is not audible (green LED does not flash)
Possible cause: battery is exhausted or not properly connected
Solution: check or replace the battery
5TROUBLESHOOTING
Should this equipment malfunction under normal use, it will be repaired without
charge for a period of one year from the date of purchase.
The customer shall not have any claim under this warranty for repair or adjust−
ment expenses if the trouble is caused by improper, rough or careless treatment or
mechanical damage, by a fire or other natural calamity or by improper repair or ad−
justment made by anyone other than manufacturer.
Any information, service or modifications are provided by the manufacturer:
Jiří Mareček, OK2BWN, Obřanská 593, CZ−664 01 Bílovice nad Svitavou
phone/fax [phone], e−mail: [e-mail]
6WARRANTY, SERVICE
GENERAL:
Supply 9V battery or NiMH accumulator (6F22 size)
Operating period (using battery or accumulator 200 mAh)
continuously 6,5 hours
intervals 17 hours
Operating temperature range −10...+ 60°C
Storage temperature range −20...+ 60°C
Covering IP53
Dimensions 57 (W) x 73(H) x 22 (D) mm
Weight 50 g (without battery)


TRANSMITTER:
Carrier frequency PLL controlled (3,52 ... 3,64 MHz)
Modulation CW
Output RF power 50 mW
Antenna vertical wire 2 x 1,2 m (audible over 1 km)


LOGIC UNIT:
Transmitted codes: MOE, MOI, MOS, MOH, MO5, MO, A ... Z
Keying speed: 35,50,70 or 100 PARIS
Time schedules: 60 s transmitting/240 s space
30 s transmitting/120 s space
60 s transmitting/60 s space
12 s transmitting/48 s space
continuous operation
Time base stability: +−20 ppm (approx 2 s/day)
7SPECIFICATIONS

Jiří Mareček, OK2BWN
CZ−664 01 Bílovice nad Svitavou, Obřanská 593
phone [phone], phone/fax [phone]
e−mail: [e-mail], http://www.marecek.sky.cz