St-2 antenna question

[rbm]

where do i buy one or see what it looks like

I use a few of these:
RF Bay, Inc. LNA-1000
10 1000MHz Low Noise Amplifier LNA 1000 30dB Gain SMA | eBay

Or ............. for cheap:
One of the inline amplifiers 'may' help. Just make sure the bandwidth covers the frequencies you want to receive.
(But ....NOT one of the 950MHz-2GHz models!)

Something similar to this one. But, if you have strong signals nearby, they'll overload.

5 Cabletronix in Line Satellite Amplifier 20dB Gain 40 2150 MHz Power Passing | eBay
With those, you'll need a 12V wall wart power supply and a DC block on the input side of the amplifier.


Rich

I feed 32 radios using one of the LNA-1000 preamps. (Including my Broadcastify feed)
Here's just one of those receivers.
Milsat Satcom Satellite SDRSharp with Eztv668 SDR dongle e4000 chip - YouTube
and here:
Dripping water on SatCom, using USB DVB-T Dongle and SDR#, ST2 antenna with LNA-1000 preamp - YouTube

 

[ScanMaine]

Do you hook them up on the antenna end or what. Send me a pm if you want to not drag out the thread here

 

[rbm]

Do you hook them up on the antenna end or what. Send me a pm if you want to not drag out the thread here

Most of mine are mounted right below the antennas.

Here's an older post that shows how I do it.

Or, if you use inline amplifiers, they're weather proof and.....
The coax carries the power to the preamp and the DC block on the antenna side of the amplifier prevents the voltage from going to the antenna.

Rich

http://forums.radioreference.com/sc...wering-versus-remote-powering.html#post860180

 

[ScanMaine]

SO IF i DO THE INLINE KIND WHAT WOULD I NEED TO MAKE THIS HAPPEN BEFORE WINTER.idO i HOOK THE COAX TO ONE SIDE AND THEN RUN A 3 OR 6 INCH COAX FROM THE AMP OUT INTO THE ANTENNA???

 

[ScanMaine]

IM THINKING ABOUT USING THIS ONE sorry caps was on i was programming radios


so this is what im gonna start with


5 Cabletronix in Line Satellite Amplifier 20dB Gain 40 2150 MHz Power Passing | eBay


any ideas how to put this together

 

[rbm]

any ideas how to put this together

You'll need something like one of these to block DC between the antenna and the input on the amplifier.
But remember, if you have strong local signals, you may have a problem with overload.
But, it's cheap enough to try out.

New Coaxial F Connector DC Voltage Blocking in Line Coupler 25 7901 14668 | eBay


You'll also need a DC inserter (12-15Volts) to supply voltage up the coax to the amplifer.
Something like this:
15V Power Supply Extreme AC DC Adaptor IPA1000PSB w Power Inserter Module | eBay

Or like this:


Rich

 

[ScanMaine]

i ALSO RUN A 4 PORT MULTY COUPLER RUN IT ALL TO THAT OR AFTER IT.?

 

[rbm]

i ALSO RUN A 4 PORT MULTY COUPLER RUN IT ALL TO THAT OR AFTER IT.?

Sorry about the delay getting back to you. My internet has been out since sometime last night.

You want to have your preamplifier as close to the antenna as possible.
On mine, I have about 3' or 4' of coax on the antenna and then the amplifier.

The preamp is first. Closest to the antenna.
Then the multi-coupler inside.
If you find that you have too much signal into the multi-coupler you can reduce it by adding a splitter ahead of the multi-coupler to reduce the signal.

I also have a few Electroline EDA-2800 multi-couplers inside and I don't have any problems.

A good test is that your weakest signals should sound better. If not, you probably have too much gain.

Rich