Aviation band receiver

Size: px

Start display at page:

Download "Aviation band receiver"

Cory Ashlie Norton
5 years ago
Views:

1 Aviation band receiver Suite manual V. A simple introduction This suite is dedicated to receive calls between aircraft and tower, cooperate with the good performance of the antenna (VHF yagi antenna), open within about 90 km in the biggest can receive calls between various types of aircraft with the control tower. Main indicators Power supply: v Antenna: 0 ohms, is not balanced Typical receiving current: 0 ma Receive frequency: MHZ to MHZ Working pattern: AM Circuit principle Antenna to receive signals first enter a band-pass filter, the band-pass filter function is to ensure that the MHZ to MHZ signal can be put into sc high, other signal is maximum attenuation. After filtering, the signal amplified by the th sc (), and then enter the NE0 mixing, at the same time NE0 inside a voltage-controlled oscillator, the frequency changes because of the D junction capacitance, design covers about 0 MHZ to 0 MHZ.

2 Native intermediate frequency is 0.7 MHz, after NE0 mixing signal to 0.7 MHz ceramic filter, its function is to filter out irrelevant signals generated by mixing, and then the signal to do into Q, finally gave MC0 further intermediate frequency amplifier. MC0 amplified signal, in the weeks after the T frequency selective, D for amplitude modulation signal envelope detection. Check out the audio signal after UA and UB, LM amplification for headphone output again. Among them, the AGC function performed by UA and UB, mute function by UA, UB to cooperate to complete. Component selection All less than 000 pf the capacitors for high frequency of ceramics, greater than uf capacitance for aluminum electrolytic capacitors, all resistance is a quarter w % fixed resistance. Production debugging Control circuit diagram and the identity of the PCB mounting of all components. General compliance installation sequence of low to high. Checked everything is in order, after turn on the juice and the power of positive and negative polarity must not be wrong. Insert the walkman headphones headphone socket, should be white noise could be heard. Touch one end of the detector diode, audio headphones get bigger noise description function is normal. To the antenna connected to a soft line of 0 cm, will hear a noise significantly larger, mean channel essentially normal. Because of all the inductance walked straight line on the PCB, and high precision, no need to be adjusted. Such as near no carrier signal, advice from C to 0 centimeters or so at the end of the software, then short circuit R, so the vibration of the coverage has reached around 00-0 MHZ, judge machine can listen to the local FM signal. Native function knob from left to right are: frequency control, noise threshold adjustment, volume adjustment, clockwise. Headphone socket on the right. Method of use For VHF are close to a straight line transmission, therefore VHF communication cannot be obscured, listening to the tower signal more need to pay attention to it, close to the airport in a plane is apart from the ground height when there are several hundred to several thousand meters high, so the signal can cover a distance. In order to better effect, it is recommended to use external high antenna, such as a quarter wavelength (0 cm) of GP antenna, yagi antenna or using better VHF paragraph. In a word, need according to the practical environment, appropriate cooperates antenna, can obtain good result!

omnidirectional antennas. It consists of a vertical level of radiation oscillator and - root extension of the oscillator. A few metal rod with a M, made simple.

3 For primary fans, it is recommended to use GP antenna or yagi antenna. Below is GP antenna, GPS antenna is short for flat ground antenna, the antenna, also known as vertical ground antenna is a kind of common vertical polarization omnidirectional antennas. It consists of a vertical level of radiation oscillator and - root extension of the oscillator. A few metal rod with a M, made simple. Below as the yagi antenna, has the very good directivity and high gain. Also can use insulators metal bar! Diagram for wavelength lambda, director, reflector are calculated respectively and the main oscillator length and a, b, c, d spacing after assembled.

4 Chassis to install This circuit board can be easily in the size of 0 mm * 97 mm * 7 mm standard aluminum chassis (this case is not included in this kit, such as the need to please buy).

5 元件清单 R,R,R,R,R9 R,R7,R9,R,R7, R0, R /W 固定电阻 K 7K R,R7,R 70 R,R,R0,R,R 0K R,R 00K R M R K R9.7K R,R,R 0 R.K W,W,W 0K T 磁珠电感变压器 7X7-0.7MHz Z,Z 直插磁珠瓷片电容 C,C,C,C,C,C, 0.uF(0) C,C,C7,C C,C,C,C,C7 000pF(0) C,C pf C7,C,C9 p C0,C 7pF C 0pF C,C,C,C9,C0 0.0uF(0) C9 0.7uF(7) 电解电容 CP,CP,CP,CP 00uF /V CP,CP,CP7,CP9,CP0,CP 0uF /V

7MHz 请注意管脚方向 : 器件表面印刷字面对读者, 脚在右边其他元件 J BNC(Q9) 插座 J 电源插座 J.

6 CP D 0uF 晶体管 BB90 插入板子请按丝印方向 D,D AS9 D N00 Q,Q SC 集成电路 U 7L0(TO9) U NE0(DIP) 配 IC 插座 U MC0(DIP) 配 IC 插座 U,U LM(DIP) 配 IC 插座 U LM(DIP) 配 IC 插座陶瓷滤波器 Y 0.7MHz 请注意管脚方向 : 器件表面印刷字面对读者, 脚在右边其他元件 J BNC(Q9) 插座 J 电源插座 J.mm 立体声插座 SPK( 插入耳机 ) PCB 电路板片 R9 / K R9 in LM between foot and ground, Can improve the response speed of noise, Please welding on the back of the PCB. CT has been welded in T weeks inside, no need to install.

7 电路板装配图 Please note that Y foot, can not install error!

8 D ANT J C 航空波段接收机电路图 (V.0) 淘宝店 : 论坛 : 000p C7 p C p C p C p C 000p C9 p R7 AVCC_V C7 70 C R 0.u 0.u K R U C INA VCC 7K 000p INB OSCE 7 SC U Z VCC_V 7L0 /TO9 VOUT VIN FB CP 00u /V R 70 GND OSCB C0 7p R OUTA OUTB 0 Q C NE0 C 0p 0.0u C C R W GND VCC_V CP 00u /V R 0K VCC_V 7L0 SC AS9 N00 D 000p 7p 00K 0K C C 0.u R7 R K R 70 C7 AVCC_V C 0.u Y CP 0u /V LT0.7 C VCC_V CP D BB90 C 0.0u CP 0u /V R.K 为 PCB 电感 C 7K SC Q 000p U NK 7 GND IN- VCC OUT- IN AGC OUT R 0K T 7 D AS9 R0 0K C 0.0u - LM_ UA R9 7K C9 0.7u 0.u - 0u /V 7 AGC UB LM_ B MC0 C9 0.0u R K C0 0.0u AGC 7X7-0.7MHz R K VCC_V R M 0K W R 0K R 7K C 0.u R K VCC_V V 电源输入 B C R7 R0 R SPK J CP9 0u /V R 0 LM - 7 U R CP7 0u /V R9 K VCC_V 0.u 7 UB LM_ R - 7K 7K C 0.u R 70K D CP 0u /V UA 00K - LM_ R9.7K W 0K J POWER D N00 VCC_V Z FB CP CP 00u /V 00u /V C 0.u A C 0.u 0 CP0 0u /V 7K AS9 A M HOLD_0 M HOLD_0 M HOLD_0 M HOLD_0 Title 0.MAIN Size Document Number Rev A.0 HM00ABRA_ Date: Tuesday, June, 0 Sheet of

S-RockMite QRP Kit User Manual. Welcome to visit the home page to obtain the latest data. 1 / 23. Revision V161101

S-RockMite QRP Kit User Manual Revision V161101 Welcome to visit the home page www.lxqqfy.com to obtain the latest data. 1 / 23 1. Introduction This is a very small volume of simple 40 meter band micro-power