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
V-115 radio modification mods for the noise

Mod for your Radio!!!

MOD noise [SOLVED]
Has a high background noise or hiss like interference on SW and AM. Probaly the internal circuitry (most likely the display) was causing 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 of around 10uF (between 4.7...22uF will do) soldered to the battery connector (inside the radio).
Modification to fix the noise of the tivdio-v115 radio

I also grounded the speaker (center pin is the chassis of the speaker)
Modification to fix the noise of the tivdio-v115 radio
connect a little wire from the metal housing of the speaker to the ground of the pcb (I used the position next to C22). Not sure if this is needed, but it wont hurt.


Tivdio V-115 Manual



*Press the AM/FM or SW key to select the band. High sensitivity and selectivity with excellent reception. 100 radio station presets.
*Automatic search and store the radio station. The available station can be automatically numbered and stored from low to high frequencies.
*Can play MP3 or WMA format music stored in the TF card; With 3.5mm AUX input, it supports to connect the external audio equipment as a loudspeaker.
*3 recording mode: MIC recording + Line in recording + Radio recording. Can select Simple(64kbps), Quality(96kbps) or Super(128kbps) recording quality.
*1000mAh removable rechargeable BL-5C lithium battery ensures long time playback. Please use an external adapter (DC 5V 0.5A, USB port) to charge the radio.

Earphone output function enables you to immersive in music world privately.
High quality speaker with bass diaphragm, the sound is clear and loud
Quick station/song selection: direct input radio frequency or song 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.

Brand Name: Retekess, Tivdio, Audiomax
Model Number: V-115
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

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