What is intermediate frequency alignment?
In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception.
What is the proper use of single generator?
A signal generator is an electronic test instrument that creates or generates either repeating or non-repeating waveforms. Thees waveform can be of different shapes and amplitude. Signal generators of all types are mostly used in designing, manufacturing, servicing and repairing electronic devices.
What is RF alignment?
Re: What’s RF alignment? It is adjustment of each stage of a radio frequency device such that the desired bandwidth, center frequency, and amplification (or attenuation) is obtained from the device.
What is the difference between IF and RF signals?
RF to IF conversion is achieved using a RF device called Down-converter. Heterodyne and homodyne receiver architectures are used to convert modulated RF signal to IF signal. Superheterodyne uses 10.7MHz as first IF and 470KHz as second IF….RF vs IF.
| Type of application | Intermediate Frequency value |
|---|---|
| Broadcast Receiver | 110KHz |
How do I align a vintage AM radio?
To align, use the same procedure as the AA5: 1) Align IF transformers to10. 7 MHz; 2) Align dial pointer to the dial scale; 3) Send a tone on an RF frequency into the set, tune the radio to that frequency, and adjust the antenna and oscillator trimmers to maximum AC voltage at the speaker voice coil.
What is the frequency range of RF signal generator?
RF signal generators typically range from a few kHz to 6 GHz, while microwave signal generators cover a much wider frequency range, from less than 1 MHz to at least 20 GHz. Some models go as high as 70 GHz with a direct coaxial output, and up to hundreds of GHz when used with external waveguide source modules.
What is the basic difference between square wave and pulse generator?
The key qualities that distinguish modern-day pulse generators from other types of square-wave-generating instruments are accuracy and resolution. Whereas AWGs have a limited frequency precision, consider the specs for a 100 MHz universal pulse generator from Berkeley Nucleonics Corp.
What is FM radio receiver alignment?
The f-m receiver may be aligned by using an ordinary signal generator and an ele tronic voltmeter, as shown, or else with a high-resistance d-c voltmeter. to observe the output by means of an alternating-current output meter connected to the voice coil circuit of the loud speaker.
What is FM receiver?
A radio or FM receiver is an electronic device that receives radio waves and converts the information carried by them to a usable form. An antenna is used to catch the desired frequency waves. Frequency modulation is widely used for FM radio broadcasting.
What is the standard IF frequency for AM receiver?
Explanation: Standard intermediate frequency used for AM receiver is 455KHz. Intermediate frequency (IF) is obtained by mixing the incoming signal frequency with the locally generated signal frequency.
What should I do if my radio alignment is not right?
The alignment will not normally vary greatly on its own, so if there is no sign that it has been disturbed in the past you should look for other causes of the problem first. In particular check the AGC and IF decoupling capacitors and resistors.
Do you need a generator for an AM radio alignment?
At a minimum, for AM radio alignments, you need an RF signal generator that can have its output modulated; which is to say the generator needs to be able to place an audio tone on the RF signal. Many newer digital “function generators” are often not capable of this, so shop for an RF signal generator with modulation.
What causes a radio set to need realignment?
The usual indications that the set requires realignment on MW and LW are poor reception and interference. The alignment will not normally vary greatly on its own, so if there is no sign that it has been disturbed in the past you should look for other causes of the problem first.
Do you need a multitester to align table model receivers?
While the beginner should steer clear of FM and TV sets and the more complex consoles, there is no reason why he shouldn’t undertake the alignment of table model AM broadcast-band receivers, if he has or can borrow the necessary test equipment – a multitester (not absolutely essential), an insulated alignment tool, and an r.f. signal generator.