Kaffeedor

I know this is a little bit late but for people that read througt this later, here is a link to a (my) Radio Astronomy Discord server:

https://discord.gg/U2ZXqUR

(We currently have 118 Members with like 10 active Members and about  20 semi active members)

15 hours ago, Carl Reade said:

Hi there are quite a few options on eBay at that price. Wideband LNAs with a bias tee circuit or screw terminals for power. Why do you think yo destroyed your current one?

 Carl

Hello,

I now ordered the (more expensive than eBay ones), 'Nooelec SAWbird+ H1 Barebones', as it has a Micro USB port as power connection. Should arrive on Monday

I wanted to resolder the '+' connection on the old one but then the 'Plate' were the connection was on the LNA got of and now there is no connection between '+' and anything other in the LNA. Also one of SMA connections is tilted slightly

Unrelated:

How young is the youngest person you know of who build a Radio Telescope?

Do you know good books/magazine related to Radio Astronomy? 

Fedor

On 16/01/2020 at 01:01, Carl Reade said:

It will work fine. I think what UR is saying is the plate on the feed is a reflector which it is but not the main reflector.

Copper will need sprayed with a coating to protect it from the weather. Keep us updated on the build.👍

So now, two months later, I still haven't made first light. Software (I use Cotos VIRGO) is ready, feed is beside LNA done and I think I have a place to put it now.

My problem now is, I think I have destroyed my LNA... 

Does anyone here know a good and cheap(<30€) LNA that I has a USB plug onboard!! and doesn't need to be soldered anywhere? 

Thank you all,

Fedor

On 12/01/2020 at 10:19, UR8IP said:

You should not install such expensive metal as a reflector. Copper is corroded. You can successfully apply a grid with a small cell. But in any case, you will need a device to adjust the irradiator.

@UR8IP Wdym? 

It is the feed, not the "Reflector" /dish?! 

And it wasn't that expensive. 

And for the Original question, I asked, I managed to bend it 90° with professional help, so this shouldn't be a Problem. 

41 minutes ago, UR8IP said:

Buy an aluminum pan of a suitable size, cut to a height of 50 mm. In the center, install the plug.

Hello @UR8IP, 

Why does it need to be aluminum? 

Since Copper is more conductive!

And does it need to be exactly 90° or can it be less?! 

Hello everyone! 

@Carl Reade

Does this ⬇️ (on the bi quad feed) need to be exactly 90° or can it be like that? 

Thanks in Advance, 

Fedor

Oh sorry I meant this:

@Carl Reade

Hello everyone!

@Carl Reade

How did you attach the 'Sides' of the bi quad, to the main Plate? 

Did you bend it, or did you glue it, (if yes, with what did you glue it?).? 

Bcs I can't find any Conductive Glue for Metall! 

Greetings from Austria 

Fedor (aka. Kaffeedor)