HX108-2 seven-tube semiconductor radio kit
Features: Secondary center amplifier standard circuit;
The center perimeter has been tuned at 465KHz
Shell plastic is new material, never use back material.
Circuits at all levels have IC test port.
Circuit diagram, assembly diagram, another parts list, process documents complete.
Volume: 115× 65×25
Frequency range: 525-1605KHz
Output power: 100mw
Power supply: 3V
Circuit Principle Introduction: 108-2 type 7-tube semiconductor radio's main performance for the frequency range: 525~1605KHZ; output power: 100mW (maximum); speaker: φ57mm, 8Ω; power supply: 3V (No. 5 batteries two); Volume: 122 × 66 × 26. electrical schematic diagram as shown in Figure 2.1 attached. As can be seen from the figure, the whole machine contains seven transistors, so it is called 7-tube radio. Among them, transistor V1 is the frequency converter tube, V2, V3 is the center amplifier tube, V4 is the detector tube, V5 is the low-frequency preamplifier tube, V6, V7 is the low-frequency amplifier tube.
package ：
1pcx
HX108-2 seven-tube input and output superheterodyne AM radio Receiver diy kit
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