Text: I am from Hong Kong
Recently, from the Lanyin comrade transferred a red light brand 711-3 tube two-band radio, the machine is about seventy percent new, good condition, good performance, the purchase price is about 120 yuan, even the postage is 150 yuan, Lanyin also comes with spare parts tube 6P1 pair!
Unfortunately, after the rough treatment of the post, the inverted U-shaped three wooden boards on the upper cover with the horn were separated from the host of the lower seat when the box was opened, the dial was broken into four pieces, and the cat's eye tube 6E2 was damaged.
After Comrade Lan Yin knew about my reception, he quickly found another complete dial and cat's eye tube 6E2 for me, and sent them to me free of charge, and I would like to thank Lan Yin here.
The Red Light 711-3 tube two-band radio is a very familiar machine for mainland friends, using the very popular 6A2, 6K4, 6N2, 6P1, 6E1, 6Z4 series of tubes and the standard superheterodyne six-tube circuit diagram, which can be said to be a relatively mid-range to high-end home radio at that time. The midwave band is the standard 550 – 1600 KHz, and the shortwave band is 6-18 MHz, covering most of the broadcast bands.
Although it is an old machine, the red light I received is spotless from the chassis to the main unit, and it has the charm of a collection:
Although the parts of the old vacuum tube machine seem to be clumsy and messy, it is convenient for tracing the line and repairing and replacing it.
The performance of the Red Light 711-3 tube two-band radio is familiar to many heroes, and the following is just a personal feeling about this machine:
Merit:
1. Beautiful appearance design, noble and generous,
2. There is independent adjustment of treble and bass, which is convenient to adjust to the sound quality suitable for personal taste.
3. Use a 6.5-inch Feile speaker, the sound is loud, the bass is strong, and the treble is clear.
Shortcoming:
1. The knob is old, and there are stains that are difficult to remove between the lines of the gaps.
2. The top plate of the radio wooden box has a crack, and the left wooden board begins to warp.
3. For newly purchased electrical appliances, I have a habit of turning them on for a long time (about 12-24 hours) before official use, to see what is wrong with it, so that they can be replaced and repaired during the warranty period or warranty period. Of course, there is no warranty period for buying used mobile phones, but finding out their faults as soon as possible is also convenient for repairing them as soon as possible and then making them a permanent collection. After I turned on the radio for about seven or eight hours, I found that there were fewer and fewer radio stations that could receive it, especially in the higher-frequency bands, whether it was medium wave or short wave, the stations that could receive it could not receive it at that time, and the original strong stations became weak stations, and there was a phenomenon of frequency drift. It is preliminarily estimated that such signs are generally caused by the aging of the inverter tube or the weakening of the middle tube. Sure enough, after replacing the 6K4, the above problems no longer occur in the machine no matter how long it is driven.
Let's see: connect the FM audio of the Sanyo alarm clock radio to the pickup interface of the red light, and the red light 711-3 tube two-band radio will become a three-band radio with FM!
In the cozy bedroom, there is an old radio, playing intoxicating music, nostalgic songs, reminding people of the old days. On the radio came a serenade, the end of the world, no love, when we were still young.....
In this way, intoxicated by the beautiful and moving music, I entered a sweet dreamland to find a more sensual phantom......
Overall Performance Review (up to 5 stars) :***
Overall evaluation of value for money (up to 5 stars):***
Excellent
excellent
Not bad
** Shorthand
* Extremely inferior
Note: I will not hesitate to recommend the advantages of the test machine, but I will reveal their disadvantages mercilessly. However, these comments can't be used as a 'test report', just a 'test experience', these are my personal feelings, a family's words, not accurate, and please add your high opinions.
Editing + Illustration: Radio Review Translation Source: hkradioer
I would like to express my sincere gratitude to the seniors of "I am a Hong Kong person" for their sharing!