My personal gripe with Retekess. My first Retekess device was the Tivdio v-115. It was a good AM/FM/SW radio and mp3 player until the software went crazy. The whole system would just freeze-up or show Chinese characters only. I later discovered I was sent version V1.3 well after newer versions were issues. A dirty deal, indeed. TIVDIO V115 Manual En - Free download as PDF File (.pdf) or read online for free. TIVDIO V115 AM/FM/SW Radio User Manual. The Tivdio V-115 Mod (Retekess V-115 / Kaimeda SRW-710S / Audiomax SRW-710S) AM FM Shortwave portable radio. Photo of the Tivdio V-115 portable radio. Portable short wave radio,4.7 x 3.1 x 0.9 in Very small, compact.

Retekess V 112 Manual

The TivdioV-115 Mod
(Retekess V-115 / Kaimeda SRW-710S / Audiomax SRW-710S)
AM FM Shortwave portable radio

User Manual 66 76 SS-TS2000 Size:120.80.25 mm. 2 Please read the manual carefully before use this unit 1. Packing List Name Quantity Remarks Keypad 1 User manual 1 Screw driver 1 Rubber plug 2, used for fixing Self tapping screws 2, used for fixing Star screws 1 used for fixing Please ensure that all the above contents are correct. Amazon.com: Retekess V115 Shortwave Radio, AM FM Radio Digital Tuner, Rechargeable Radio Support Recording, Portable MP3 Radio with Bass and TF Socket (Black): Electronics.

Photo of theTivdio V-115 portable radio

Portable short wave radio,4.7 x 3.1 x 0.9 in Very small, compact. It is amazing to find this much functionality in such a small package. Will fit in a man's shirt pocket;
V-115 transistor radio Bass sound with MIC recording and Line in recording Radio recording etc 3 recording mode and Simple 64kbps; Quality 96kbps ; Super 128kbps 3 recording quality
Am fm radio with Mp3 player speaker by 3.5mm AUX input and also can be used as a loudspeaker by usb cable
Built in three languages Chinese English Spanish;
Has an “AKC6951 DSP chip”
9k/10k for AM tuning increment;
Retekess V-115 portable radio with all features you need: FM/AM/SW band, and also have 3 record mode, bass sound music player that can play MP3 and WMA files. You can record your favorite music or talk shows on the radio, and can record the external sounds with the built-in microphone. This Multi-Functional Radio not only allows you to enjoy the radio, but also brings you a great fun.
Of course, there is no SSB for this low price.
AM reception seems to have low sensitivity due to the obvious small size of the ferrite antenna
FM stations do pretty well on average. Listen to one of the “major” shortwave broadcasters with a booming signal into your part of the world – you can’t beat it for this price point.
The audio that comes from this little radio is awesome! Nice bass response! Strangely enough the audio via the earphone does not seem to have all that bass. No stereo either.
The recordings are very good and do have stereo of course. So listening to MP3's or recording them can be enjoyed with stereo headphones!

Mod for your Radio!!!

MOD noise [SOLVED]
Has a high background noise or hiss like interference on SW andAM. Probaly the internal circuitry (most likely the display) wascausing this interference.
Second possibility could be the battery type of brand related(internal resistance of the battery).
Anyway, this problem is fixable:
Decouple the power/battery with a electrolitic capacitor ofaround 10uF (between 4.7..22uF will do) soldered to the batteryconnector (inside the radio).

I also grounded thespeaker (center pin is the chassis of the speaker)
connect a little wire from the metal housing of the speaker tothe ground of the pcb (I used the position next to C22). Not sureif this is needed, but it wont hurt.

! ! !RADIO MODIFICATION MODS and INFORMATION FOR YOUR TIVDIO SHORTWAVEAM FM RADIO ! ! !

Tivdio V-115Manual
V-115-English-manual.pdf

Review: https://swling.com/blog/2016/12/troy-reviews-the-audiomax-srw-710s/
Features:
*Press the AM/FM or SW key to select the band. Highsensitivity and selectivity with excellent reception. 100 radiostation presets.
*Automatic search and store the radio station. The availablestation can be automatically numbered and stored from low to highfrequencies.
*Can play MP3 or WMA format music stored in the TF card; With3.5mm AUX input, it supports to connect the external audioequipment as a loudspeaker.
*3 recording mode: MIC recording + Line in recording + Radiorecording. Can select Simple(64kbps), Quality(96kbps) orSuper(128kbps) recording quality.
*1000mAh removable rechargeable BL-5C lithium battery ensureslong time playback. Please use an external adapter (DC 5V 0.5A,USB port) to charge the radio.
Highlights:
Earphone output function enables you to immersive inmusic world privately.
High quality speaker with bass diaphragm, the sound is clear andloud
Quick station/song selection: direct input radio frequency orsong number.
Built in 3 languages: Chinese, English, Spanish (selectable).
9K/10K selectable for AM tuning increment.
Sleep timer for up to 90 minutes.
Repeat mode: All / One / Folder.
Adjustable LCD backlight.
Note: External adapter is not included.
Specifications:
Brand Name: Retekess, Tivdio, Audiomax
Model Number: V-115
Frequency:
FM: 87-108MHz
AM: 522-1710KHz (9K), 520-1710KHz (10K)
SW: 4.75-21.85MHz
Memory: Support Micro SD/TF card, Max 32GB (not included)
Audio format: MP3, WMA
Output power: 2W
Power supply: 1000mAh BL-5C lithium battery (included)
Charging: DC 5V, Micro USB interface
Color: Black
Main Item Size: 12.0 * 8.0 * 2.2cm / 4.72 * 3.15 * 0.86in
Main Item Weight: 162g / 5.71oz
Package Size: 13.3 * 10.7 * 3.8cm / 5.23 * 4.21 * 1.49in
Package Weight: 211g / 7.42oz
Package List:
1 * Retekess V-115 Radio
1 * BL-5C Battery
1 * USB Charging Cable
1 * Hand Strip with Bracket
1 * English User Manual
https://www.youtube.com/watch?v=SZ1bf-yj3C0
https://www.youtube.com/watch?v=q3u7kqJ3K2M
https://www.youtube.com/watch?v=AKvneDgUGMs
kaimeda https://www.youtube.com/watch?v=xNWNDL4Kqn4

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Retekess V 112 Manual

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Tivdio V 115 User Manual