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Leixen vv898 microphone modifications

Thread starter iw2evk
Start date Sep 23, 2015

Status: Not open for further replies.

iw2evk

Member

Sep 23, 2015

Hi,
i've buy a leixen vv898 .

The modulation it's not strong as a ham transceiver, and the audio reproduction seem "closed" to high and low tone.
The compander increment the modulation but , the audio have a poor quality and in reception they are a annoing "pomping " effect .

Someone have try to change the value of dc decoupling capacitor on electred mike and changed the value of bias resistor on mike?
Seem in series to mike they are a pi filter with 2 capitor and a resistor : can be bypassed?

Many thanks in advance

zoom here for view the pcb of micro

http://www.miklor.com/VV898/images/898micrL.jpg

Roberto iw2evk