Welcome to Australia's only Vintage Radio and Television discussion forums. You are not logged in. Please log in below, apply for an account or retrieve your password.
Australian Vintage Radio Forums
  Home  ·  About Us  ·  Discussion Forums  ·  Glossary  ·  Outside Links  ·  Policies  ·  Services Directory  ·  Safety Warnings  ·  Tutorials

Special Projects

Forum home - Go back to Special Projects

 Failed AV sender
« Back · 1 · Next »
 Return to top of page · Post #: 1 · Written at 3:06:37 PM on 28 May 2017.
Art's Gravatar
 Art
 Location: Somewhere, USA
 Member since 22 October 2013
 Member #: 1437
 Postcount: 896

Hi Guys Smile
A failed analogue AV sender!
I’m probably doing something I shouldn’t with these picture links.
I remember Photobucket links didn’t go well with this forum, but here goes nothing:

Image Link

Image Link

I’ll see if I can edit to fix the links after posting, but anyways, the RF amp does work, in that the output is stronger than the output of the universal VHF modulator, so I assume the transistor is being driven, but 5-10cm for a colour picture is a little less than the range I expected.

I didn’t really want an electronics project out of it, but the commercial units aren’t easy to find on eBay either.
Any advice would be appreciated. I realise these bands might have been reallocated which is why I was trying to keep it weak, but not quite this bad!
Cheers, Brek.


 
 Return to top of page · Post #: 2 · Written at 5:40:21 PM on 28 May 2017.
Brad's avatar
 Administrator
 Location: Naremburn, NSW
 Member since 15 November 2005
 Member #: 1
 Postcount: 7395

The links are working here. Smile


‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾‾
A valve a day keeps the transistor away...

 
 Return to top of page · Post #: 3 · Written at 9:49:10 PM on 28 May 2017.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6761

Images load for me, albeit slowly.

Imgur seems to be a popular alternative these days.


 
« Back · 1 · Next »
 You need to be a member to post comments on this forum.

Sign In

Username:
Password:
 Keep me logged in.
Do not tick box on a computer with public access.