三步改普通收音机为航空波段收音机

飞机波段接收

修改AM / FM收音机拿起空中交通管制cnmmunicatinns的。

您现在的电视川需要= AM / FM收音机，小的十字螺丝刀，小一字改锥

您的辐射范围扩展飞机带，108至138M Hz的，直接在上面的FM波段。但在飞机广播信号AM的格式。令人惊讶的是，它可能修改typicaIAM / FM广播信号的接收飞机靠近机场，没有删除或添加任何部件！这里是hoev

1。确定无线电零件。

使用由电池供电的，价格低廉，模拟无线电。取下后盖和定位为主调CApacitor（A）。可很容易地找到一只是把宁拨号你会看到其部分移动通过其清晰的情况下你应该看到近主调电容一个或tevo小线圈的铜线（B）安装上fCboard。这些线圈被用来限制

频率范围内的无线电接下来，找到调谐变压器（C）。他们看起来像正方形，金属盒调谐板条顶部。可以具有调谐互感器之一附近一对夫妇的小二极管装尸Ç板。这是，你会调谐变压器调整。它的功能是过滤掉调幅噪声

2。修改无线电。

调整radicto FM电台的上端FM波段，注意转盘定位分开主屯附近的小线圈

mgcapacitor usinga小一字改锥当你完成后，调整转盘，你会发现

该brcadca纽站下移拨号。岭山o是门嗷嗷能够接收到电台

108MHz的以上。收听电台站之间，所以你可以听到一个

引打嘶嘶。注意位置的槽的顶部调整变压器靠近主要囤ING电容（最近tothe小二极管}慢慢打开它的螺丝，直到发出嘶嘶的响声是在其最大水平。注意到底有多少转弯和

方向转动螺丝，便于重新定位后来。无线电是现在能够接收AM信号新扩建的F同带。3。测试修改后的无线电。

更换无线电盖。就拿它一和卵石} rdrivers的一机场附近空中交通在高峰期

打开收音机FM波段上的音量拨号slovrly调整。你应该能听到

空调旅行车传输。如果需要进行调整的调谐线圈和调谐变压器

Aircraft Band Receiver

Modify an AM/FM radio to pick up air traffic control cnmmunicatinns.

You tv川need= AM/FM radio, small Phillips screwdriver, small flathead screwdriver Extending the Range of Your Radia

The aircraft band, 108 to 188M Hz, is directly above the FM band. But aircraft signals are broadcast in an

AM format. Amazingly, it's possible to modify a typicaIAM/FM radio to receive aircraft signals in the

proximity of an airport, without removing or adding any parts! Here's hoev

1. Identify the radio parts.

Use a battery-powered, inexpensive, analog radio.

Remove the back cover and locate the main tuning ca

pacitor (A). It's easy to Find一just turn the to ning dial

and you'll see its parts move through its clear case

Near the main tuning capacitor you should see

one or tevo small coils of copper wire (B) mounted

on the fCboard. These coils are used to limit the

frequency range of the radio

Next, locate the tuning transformers (C). They

look like square, metallic boxes with tuning slats in

the top. One of the tuning transformers may have

a couple of small diodes near it mounted an the尸C

board. This is the tuning transformer that you'll

adjust. Its function is to filter out AM noise

2. Modify the radio.

Tune the radicto an FM station at the upper end of

the FM band, Notice where the dial is positioned

Spread apart the small coils near the main tun-

mgcapacitor usinga small flathead screwdriver

四hen you finish, tune the dial and you'll notice

that the brcadca纽stations have moved down the

dial. The ra山o is门ow able to receive stations well

above 108MHz.

Tune the radio between stations so you can hear a

引fight hiss. Notice the position of the slot on the top

of the tuning transformer that is near the main tun-

ing capacitor (nearest tothe small diodes}. Slowly

turn its screw until the hiss sound is at its maximum

level. Note exactly how many turns and in which

direction you turn the screw, for easy repositioning

later. The radio is now able to receive AM signals in

its newly expanded F同band.