Please read instructions and a manual before assembling ago or use well.
Instructions:
1. When I place an earphone, and a power supply of current opportunity is crowded, I enter. After use, I pull an
earphone by all means, and a power supply is cut off.
2. Resistance 15 of them, condenser 20 (including five electrolysis condensers) are in this plane.
Some condensers The capacity value expresses it with a number:
With the real capacity value that the first letter, the second letter express with a number, the third letter
increases it to the number I show the number of 0.
For example, 101 indication 10 shows with one +0 that is 100pF. As for 510, there is no zero after 51,In
other words 222 that 102 showing 51pF is clogged up with two ten +0s, and show 1,000pF in 2,200pF, 104
100,000pF that is to say I display 0.1uF.
3. Glass small in this kit as for detection pipe D1, capacitive diode (Bali cap) D2 and Zener diode D3
It is particularly good, and please watch the appearance with enclosure product (full-fledged black one,
cathode) because I resemble closely when I use it.
4.This plane is a thing of association of CRSA. If there is an opinion, please contact it as follows.
Addrice:〒100012 Beijing City Chaoyang District overseas Chinese Castle 11-2-402 room
Telphone:86‐105175590-8006,86-13391633237,86-13391633219,Fax:86‐105175590-8002
PJ-80 type direction measurement receiver explanation:
This machine is a Receiver kit of the opening of the spread type-type 80m band, and it is easy, and the circuit is
easily assembled with cost cheapness. The young people are suitable to use it for ARDF activity and the
production activity of a junior high student in particular and the primary schoolchild.
Main performance:
1. A reception frequency range: 3.5MHz - 3.6MHz
2. Directionality: That's all. distance 3m of the smallest direction judgment
3. Measurable distance: More than 300m(When I use the PX-80 type signal source which an antenna does
perpendicularly)
Explanation for assembling:
1. I put adhesion shielding paper on the inside of the box: It usually is already put.
2. Assembling of rod antenna: I insert rod antenna in a hole for antennas of top right corner of a box and fix
it with a screw.I put a washer in the box inside. Put a terminal in a screw of rod antenna; and flat washer,
spring boo Shoo, It links it to end switch K1 by a nut.
3. A battery board (the metal battery board that one has a small battery board of the circuit board, two):
It is the battery box of the right side with a battery board of big one I insert it in the gap. It is a gap of
the left of the battery box with a battery board (there being a spring carelessly, minus pole) of small one
I am similar and can enter. All the batteries belonging under series in the direction.
4. I fasten the line, and match plastic with the figure of the circuit board and fix pasting up, the coil of the
antenna in Thailand lap.
5. Inspection and the assembling of the part: I check the number of parts, numerical value, quality before
soldering well. Of the liquid of the electrolysis condenser Is not there disconnection of the drawer line of
white) a B1 (core black) B2( core whether there is not a leak; of a diode, the transistor? I check it whether
a characteristic is good. Before soldering, I cut the foot of the part into short pieces properly. When install
LM386; of the foot Be careful about line order.
6. According to a wiring diagram, I lay a bar antenna, rod antenna, the battery.
A circuit check:
1. The direct current movement point measurement:
(1) The both ends voltage of Zener diode D3 is a thing in the range from 3.5 to 4.4V.
(2) BG1 (TR)): It is usually designed the adjustment unnecessary about 2 about 1.5 - 3VBG3 R12 both ends
voltage - 2.5V the about 0.4 -1v BG2 R9 both ends voltage the both ends voltage of R3.
(3) The ground voltage vs. a thing of each foot of LM386 (a low frequency amplifier): Pin1: 1.2V, Pin2, three
or four: 0V, Pin5: 2.8V, Pin 6: 5.8V, Pin7 : 2.8V, Pin 8 : 1.2V
2. The adjustment of the oscillator:
(1) I adjust it with a high frequency signal generator
1. I pass W2 to the central standfast
2. A high frequency signal generator establishes it in the range of the 3.5-3.6MHz band
3. I let a bar antenna connect the output of the high frequency signal generator properly.
4. I change the frequency of the high frequency signal generator and confirm that I hear the sound of the
receiver. I turn a core of B2 with a high frequency signal generator as 3.55MHz, and a signal passes it.
5. I turn a W2 knob and confirm that I can receive a signal of 3.5-3.6MHz having room in both sides. When I
cannot receive it in high one, the low knob, I regulate it I turn a core of B2 again, and to be able to receive
3.5-3.6 ranges. When a frequency range is too big, I make resistance value of R14 big. The reverse reduces
resistance value.
(2) I adjust it in 80m band ARDF signal source
1. I invest W2 in a reverse clock course full and return it to some clock courses.
2. As for the receiver, a signal source adds 3.5MHz signal to an occurring antenna near.
3. I turn B2 (a white core) and receive the frequency and hear about 1,000Hz.
4. I attach the receiver to the antenna which changed 3.6MHz into the occurring signal source near.
5. I adjust W2 to the order clock direction and am known by a sound of 1,000Hz.
6. I confirm that I can receive reception frequency having room on the both ends of the B2 knob.
7. When I am too small with a value of R14 greatly when a reception frequency range is too big, I am small
with a value of R14.
3. The adjustment of the antenna circuit:
(1) Volume adjusts a high frequency signal generator or 3.5MHz signal of TX80 to a maximum in reputation,
C1, and volume is greatest When I am similar and do not become it, I move it, and the position of the coil on
the bar antenna becomes the full volume.
4. The adjustment of the high frequency amplifier circuit:
(1) I receive a high frequency signal generator or a signal of TX80, and I turn B1 (a black core) slowly, and
volume seems to become greatest I am similar and do it. If a core still grows big at the most upper end, I do it
and adjust some C3 to a small value again. A core most
5. Adjustment of the directionality:
1) It was a little distant in a place with a few obstacles such as buildings and installs a signal source. Do an
antenna perpendicularly. At first signal source and dozens of meters check a "双向" characteristic of a bar
antenna in a remote place (by machinery)
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