Repeater Operation - Kenwood TS-700SP Operating Manual

(148 MHz) frequency. Similarly, if the oscillator
frequency is 8.200 MHz the operating frequency is
144.00 MHz in the 144 MHz band; do not transmit
at this (144 MHz) frequency.
4-15. MOBILE OPERATION (DC Power)
The TS-700SP also operates from an external 13.8V
DC source for mobile operation. Operating techniques are
the same for fixed or mobile operation.
Mobile Antenna
There are many types of mobile antenna for 2 meter
use. A 1/4 wavelength whip or ground-plane or a 5/8
wavelength antenna is preferred.
Power
The TS-700SP draws about 4 amperes when working
full power. This is easily supplied by any automobile
battery. When power is supplied from a battery, it is
recommended that the automobile engine be run in order to
prevent battery discharge. See Section 2.3 for power
source information.
Note: For safe driving, it is recommended the transceiver
be operated on fixed channels.
4-16. REPEATER OPERATION
Operating Frequency
The 3-position REPEATER control functions as
follows:
* OFF Position (Simplex)
Both the transmit and receive frequencies are as indicated
on the dial.
* NORMAL Position
The dial frequency indicates the receive frequency. The
transmit frequency is 600 kHz below (145, 146 MHz
band) or above (147 MHz band) the receive frequency.
* REV Position
The dial frequency indicates the transmit frequency. The
receive frequency is 600 kHz below (145, 146 MHz band)
or above (147 MHz band) the transmit frequency.
In most cases, repeater operation is effected at the
NORMAL position of the REPEATER control. For a repeater
system whose transmit-receive frequency relationship is
reversed, repeater operation can be achieved by setting the
REPEATER control to the REV position.
Note: For 145 MHz repeater operation, an appropriate
crystal need be installed; otherwise, transmission
and reception cannot be effected at the NORMAL
and REV positions of the repeater switch.
For installing the 145 MHz repeater crystal, refer to
the instructions on page 23.
The REPEATER control has no effect on 144 MHz
band, where the transmit and receive frequencies are always
as indicated on the frequency dial. The frequency
relationship for each band is given in Table 4.
The digital frequency readout displays the frequencies
shown in Table 4 when the REPEATER is used. For exam-
ple, the readout shows 146.000.0 for both reception and
transmission in the 146 MHz band with NORMAL mode and
the VFO set to 0". Note that the transmitting frequency is
actually 145.4 MHz though the receiving frequency is iden-
tical with the display. When switched to the REV position,
the readout shows the transmitting frequency.
Table 4
REPEATER Band Knob
OFF NORMAL _ REV
Repeater Frequency
Range (Sub- Dial)
*1. If the MAIN dial frequency is below 110 kHz or above 490 kHz, 145
MHz repeater operation is not recommended.
*2. If the MAIN dial frequency is less than 600 kHz, the frequency at "600
kHz shift" becomes less than 146.0 MHz which is not recommended
for repeater operation.
*3. If the MAIN dial frequency is higher than 400 kHz, the frequency at
"600 kHz shift" becomes more than 148.0 MHz. This means out of
band operation if the transmitter is operated at the NORMAL position
of the REPEATER control
The relasionship between the sub-dial and the
transmit/receive frequencies is shown in Fig. 10.
MHz
148 + enc Repeater Control at NORMAL
ene At REV the relationship between
600 kHz] shift transmit and receive frequencies is
uel
147 + Gawe Wed quand,
600 kHz | shift
bee sZGuencY
146 + a =< Tpngmnit HOO"
1)
sree
peceve
600 kHz| Shift
147 MHz band repeater
146 MHz band repeater
frequency range
frequency range
>—__—_—_
145 MHz band repeater
frequency
0 500 1000
Sub-dial scale
Fig. 10
17