Jump to content

Attention: RC-CAM.com will be closing down August 2021.

The RC-Cam.com forum was the very first online community dedicated to the advancement of wireless video cameras on radio controlled (R/C) models. This is now called "FPV" (First Person View). We are proud of the contributions that our members have made to the FPV hobby.

We've seen significant changes over the last twenty years. Initially there were a lot of eager R/C hobbyist that built their own video systems. Allowing these creative individuals to share their work was the purpose of this site. Now the FPV market is flooded with low cost systems; Sadly DiY FPV video projects are now rarely discussed.

RC-CAM.com (main site and forum) will be closing down August 2021. This is being announced now (March 2021) so that everyone has time to download any information that is important to them. After the site is shutdown the information will no longer be available here.

We appreciate every member's involvement with advancing the FPV hobby. It is indeed sad to say goodbye to all our online friends. Be safe and stay healthy.

No Audio input to TX

Recommended Posts

I am having trouble hooking up a pre amp mic to my 1.2 Ghz video TX

I have tried LM358 circuit

and a commercial 2 transistor pre-champ

No luck just lots of video noise

Only thing that works is my Gopro live feed into audio input works great

but i dont not what is in there circuit to copy it .....what am i missing here




Link to post
Share on other sites

Correct it wasnt my circuit it was the Vcc to the preamp not geting power

I ended up using my very first circuit as i didnt want much gain and used a single transistor works great

I used BC549 instead of 2n3904



Edited by Kermet
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...