Condition:New
Type:Voltage Regulator
size:68*100 mm
Vocal tract:One
Power supply mode:Other
Color classification:Core circuit board 3D Q welding of conventional model (rotating antenn
Radio tuning:Pointer type
Band type:Single band
Radio type:portable
No power supply, energy saving and environmental protection.
It can be used to test the efficiency of antenna or ground wire.
The circuit is simple and easy to make.
Lifetime availability, free of maintenance costs.
The device is simple, a pair of coils, a variable capacitor, a geophone, a fixed capacitor and a pair of headphones constitute a practical ore machine. No power supply, safe and environmental protection, good sound quality.
This product is FM mineral radio. The energy of electromagnetic wave is extremely limited. If you can't hear the sound, please repeatedly find the right place to listen. Our shop can't guarantee that you can listen to the radio in your place normally (it is recommended to listen within five kilometers from the launching tower), but it ensures that any equipment has no quality problems in the circuit, and has passed the test before shipment.
Note:
Local test machine can receive two radio stations (because there are only two sets of FM broadcasting signals in the locality), because the buyer's geographical location and the strength of the radio transmitting signals are unknown parameters, so after receiving the radio, the buyer may appear many radio stations, series stations, few radio stations, or simply silent and other phenomena, and the items sold in our shop will not be returned.
So those who do not have certain basic knowledge and practical ability, please think twice about buying, thank you for your understanding and support!
The wake-up of the chamber fluid is divided into two steps:
1, wave open transformation
2, amplitude modulation face wave. In order to understand the rate of face fluid, the important thing is the first step, that is, wave-transformation. If the FM wave becomes an amplitude-modulated wave, the essence is the liquid-on transformation. The wave-on transform says that it is on the tuning positive curve, not taking the complete resonance point, but taking the resonance point extraction signal which is deviated from the complete resonance point. This signal is on the slope of the normal curve, which is an amplitude modulation package. The frequency modulation signal of the line. In the description of the white point is the frequency modulation wave that is output when the tuning loop is in the micro-detuned state, but the frequency modulation liquid with the amplitude modulation envelope. In the mining machine, the wave-on conversion is everywhere, because no one can manually adjust the vibration to the full resonance point. With the amplitude modulation envelope, the second step is the cabin wave. You know what the heroes are, I will not say it. The reason why the slope is tired is to adjust the signal output point to the slope of the normal curve of the tuning loop.
The test of the line.
Replacement of 360-degree rotating antenna
1. Due to the eye-frequency characteristics of the fm frequency electromagnetic wave signal transmission, the listening distance of the fm ore radio has an eye. Generally, the effective listening distance of fm ore is 5 kilometers. Because this model is made well, the chest is reasonable, and it can not be excluded in the range of 5---10 km, depending on the specific conditions.
2. This model of ore radio standard equipment is shh-1 type 350 Euro sister headphones, other models of tongue and dynamic high-impedance headphones can also listen, users can collect and use different models of headphones according to their own hobbies, good headphones Listening distance
It is improved from nature and the listening sound is also loud.
3. This model mining machine pulls the new antenna according to the q value of the resonant circuit. It is not a professional mining machine player. Please do not change the antenna. In addition, the length of the pull-on antenna of this machine is related to the selectivity of the mining machine. Under normal circumstances, it is not recommended to pull it out completely. It is advisable to pull out how long it is, and it is necessary to explore the environment according to the user's use. This is also an exploration fun of playing fm ore radio.
4. Since the big dry world fm ore radio is the first batch of FM ore radios in China and even the world, it is very collectible. Please do not disassemble and replace parts at will, so as not to affect the collection value.
5. Please don't listen to the ore radio outdoors during thunderstorms. Lightning can cause harm to people and mining machines. The fm1 type ore radio is designed to be well-made and well-made. Under normal conditions, it will not be damaged for long-term use.
·6. Due to the influence of the use of the area on the calibration of the FM machine, this model is not a calibration model, that is, only the tuning knob has no dial. Users can calibrate their own scale and radio according to their usage.
