BATC Forum

I am looking for an easily reproducible scheme of a 70MHz ATV FM transmitter/modulator.

two acceptable options:
- BB input, 70MHz output
or
- video input + audio input, 70MHz output


best 73
de
i2NDT Claudio

Hi Claudio,

I have an old German design with an IF range 80-150 MHz.
Video input and audio modulated on a 5.5MHz carrier, output level 10dBm and level adjustable over 10dB.
https://www.dropbox.com/s/hfuscjp4u2ls8 ... r.pdf?dl=0
To lower the IF freq. change L4 and alter the output filter to meet your requirements.

73's de ON1AVO

Hi Claudio,

I found this today:
http://www.robkalmeijer.nl/techniek/ele ... index.html

It may help?

73, Richard