Hi all,
For some time now i'm working with the Quadrant DVB transmitter, the picture is perfect.
But I have some problem with the audio input, and confused ?
To make shore that I doing the right thing, help me out here.
What type of microfoon should I use. ?
Do I need a preamplifier ?
Ore are there other thing i'm overlooking ?
All help is appreciated
Jan / Pd0hni
Struggling with audio input 70cm DVB-s
Forum rules
This forum is run by the BATC (British Amateur Television Club), it is service made freely available to all interested parties, please do not abuse this privilege.
Thank you
This forum is run by the BATC (British Amateur Television Club), it is service made freely available to all interested parties, please do not abuse this privilege.
Thank you
Re: Struggling with audio input 70cm DVB-s
Hi Jan
I use one of the Quadrant / BATC DTX1 in our 23cm repeater GB3EY.
The audio input is the standard 'Line Input' of 0dBm into 600 ohms. That equates to 0.775V RMS, so you do need an amplifier to lift the microphone level with a gain of 40-60dB depending on the microphone performance.
For an explanation see https://en.wikipedia.org/wiki/Line_level
Clive G3GJA
I use one of the Quadrant / BATC DTX1 in our 23cm repeater GB3EY.
The audio input is the standard 'Line Input' of 0dBm into 600 ohms. That equates to 0.775V RMS, so you do need an amplifier to lift the microphone level with a gain of 40-60dB depending on the microphone performance.
For an explanation see https://en.wikipedia.org/wiki/Line_level
Clive G3GJA
Re: Struggling with audio input 70cm DVB-s
Hi Clive,
Thank you for your response.
I will look in to this, and try to figure out how the things are on my side with my microfoon.
I have 2 I have to find out witch one is better.
The 600 Ohm condenser microfoon ore the 400 Ohm Dynamic microfoon ?
Thank you for your information.
' 73 Jan / Pd0hni
Thank you for your response.
I will look in to this, and try to figure out how the things are on my side with my microfoon.
I have 2 I have to find out witch one is better.
The 600 Ohm condenser microfoon ore the 400 Ohm Dynamic microfoon ?
Thank you for your information.
' 73 Jan / Pd0hni