How do you wire a broadband Amplifier?

[Pyr8]

How do you wire a broadband amplifier such as this Mini Circuits ZFL 1000LN LOW Noise Amplifier 10 MHZ 1 GHZ 15V 50ohm | eBay and get the 15V to the top of a 35' mast?

Is the power run up your antenna coax from your shack, or do you have to run a separate power line?

A link to a write-up would be appreciated!

 

[n0nhp]

You can either run a separate power line or using a pair of power inserters, run it up the coax and split it out at the top and bottom.
See this article for more information:
Simple Power Injector for Preamps

Bruce

 

[rbm]

Along with the article Bruce pointed out, you can use an arrangement like the one below.
I've used this to demonstrate a preamp at a friend's home.
Total price, less the wall wart was around $15

You just need to add another power 'inserter' at the top to get the DC from the coax.

But I would add a DC Block prior to the preamp just because I don't trust the power inserter to block all DC.

Rich

 

[rbm]

I'm pressed for time right now so this is a little messy but it should give you the general idea.

Rich

 

[Pyr8]

Thanks Rich!

Now what happens if you are using a "lightning arrester" off the mast before the line comes into the shack. Will the arrester allow the DC to pass through the line, or will it cause issues?

I'm pressed for time right now so this is a little messy but it should give you the general idea.

Rich

 

[Pyr8]

What is the model number on the Mini-Circuits you are using in the photo?
Cant quite make it out from the photo.

I'm pressed for time right now so this is a little messy but it should give you the general idea.

Rich

 

[rbm]

What is the model number on the Mini-Circuits you are using in the photo?
Cant quite make it out from the photo.

It's a ZQL-1900MLN.
I use that type for 400-2000 MHz coverage

I just grabbed that one to take the photo.

A lightning arrester 'should have no effect' on the signal.

You should be able to click on the magnifying glass in the bottom right corner of that image a few times to get to the high resolution image.

Rich

ZQL-1900MLN frequency plot