V3 Frog Sound 7.023MHz CW Transceiver Receiver Telegraph HAM Radio Receive Transmit QRP Machine Shortwave Radio Station
44.99 €
V3 Frog Sounds HAM Radio QRP Telegraph CW Transceiver Receiver telegraph machine shortwave Radio Station 7.023MHz DIY
Product manual LINK
http://115.28.16.44:81/file/1168.pdf
This is a very small volume of a simple 40 meter band micro-power amplitude telegraph transceiver, 9V square battery or external 9-12V DC power supply. Spread good time, and the nearby provinces hundreds of kilometers amateur radio communications. This machine was first introduced by domestic radio enthusiasts, but also it played a nice name "frogs". The frogs calling Kit 3.1 public version based combined with the actual usage Fixed several key issues, after several debugging before the formation of the current version.
Key Indicators
Power supply: 9V-12V (Recommended 12V linear regulated power supply)
Antenna: 50 ohm, unbalanced
Transmission power: 2W (9V Power), 3W (12V power)
Frequency: transmitter local oscillator frequency: 7023 KHz; receive local oscillator frequency: about 7023-7026 KHz
Operating mode: CW
Use
This machine is simple direct conversion transceiver interference, selectivity can be compared and the super heterodyne receiver, it is necessary to use not worse than the length of a half-wave dipole antenna, or communication is relatively poor. The selection disturbance is relatively small; spread the good opportunity for communication experiment, it is best to make an appointment with your friend’s communication. Communication distance of about 150-300 km more secure, to greater distance depends on the propagation environment and the operator's operating skills. If the broadcast interference is relatively large, use 5K GAIN potentiometer signal attenuation, emergent signal from the radio interference. Attenuation potentiometer is critical, carefully adjusted; you will receive an unexpected effect. In the dissemination of good times with of this machine FT80C goods shortwave radio with a signal on a distant contrast reception, this local effect is no difference between basic commodity machine, which makes unexpected.
Recommendations for improvement
1N4001 replaced by appropriate varactor tube (recommended the 0P-100P), can increase the receive frequency range. Q1 9018 power between 0.8W ~ 1.2W 8050 power between 1.5W to 2W (select 8050 will make D882
In a critical state, need to be careful).
Product Specifications
7.023MHz CW: V3 Frog Sound DIY
shortwave Radio Station: Transceiver Receiver
Brand Name: DykbRadio
Model Number: V3 Frog Sound DIY
Size: shortwave Radio Station
Style: HAM Radio QRP
Output Voltage: 7.023MHz
Origin: Mainland China
DIY Supplies: Electrical
Type: Transceiver Receiver
Choice: yes
semi_Choice: yes
| Color | DIY KITS |
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