
- 6 -
(3) Wireless set
Before connecting, adjust SWR as follows:
In the case of output less then 10 W:
less than 1.5
In the case of output from 10 W to 100 W: less than 1.3
In the case of output from 100 W to 500 W:
less than 1.1
(i) Speaker
Solder the ancillary coaxial cable and a pin plug as shown in Fig. 3. After soldering,
connect the pin plug to the CW/BAUDOT pin jack of the Θ-7000 and the other end to an external
speaker terminal or an earphone terminal of a wireless set.
(ii) In CW mode
Connect the cable to a key jack for CW of a wireless set, check the polarity by a tester
and connect its plus (+) to the plus (+) of a screw terminal for CW of the computer; its minus (–) to
the minus (–) of the computer. Take care not to exceed the rated capacity of keying circuit of 1.5 A,
150 V.
(iii) In RTTY mode
° In the case of a wireless set with FSK function:
Connect the cable to a KEY jack for RTTY of the wireless set, check the polarity by a
tester and connect its plus (+) to the plus (+) screw terminal for FSK of the computer, its minus (–)
to the minus (–) terminal. Special care should be exercised not to exceed the rating: 1.5 A for the
maximum keying circuit current and 150 V for the maximum voltage.
° In the case of a wireless set without FSK function:
Solder the ancillary coaxial cable and a pin plug as shown in Fig. 3. After soldering,
connect the pin plug to a pin jack for AFSK of the Θ-7000 and the other end to a microphone terminal
of the wireless set. The shielding braids of the cable should be connected to GND side of the micro-
phone terminal.
(4) Key
For manipulation practice in CW mode, connect keys to a screw terminal for KEY of the com-
puter.
(5) Oscilloscope
Cross pattern can be observed with oscilloscope by the following procedures: solder the co-
axial cable or shield cable with two pin plugs respectively as shown in Fig. 3; after soldering, connect
the pin plugs to pin jacks, SYNCM and SYNCS; connect the cable in SYNCM to the V-axis input to the
oscilloscope and the cable in SYNCS to the H-axis input.
Содержание Theta 7000
Страница 6: ... 4 Figure 1 Connection ...
Страница 26: ... 24 ...