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General Scanning Discussion For general questions not specific to a model of scanner or general discussion of use of a scanner. Location specific posts should be directed to the regional forums listed below.

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Old 07-18-2014, 8:48 AM
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Question Boom Mounted Pre-Amp with the ST-2 Antenna

Need info on using a boom-mounted amplifier with a ST-2 antenna,I have no experience with these. I would like some feed-back on what to get,And how they work,And do you need a power source?
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Old 07-18-2014, 10:38 AM
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That's a short question that takes a LONG answer. ;-)

Yes you would need a power source for any preamp.
Here's an old thread that discusses how to power your preamp.
Pre-Amps: Local powering versus Remote powering

As long as you don't have any very strong signals in your area, it's worth experimenting with an antenna mounted amplifier.

As for what to get, well that can go from around $20 or so to well over hundreds of dollars.

Here's a link to a cheap experiment.
Mini-Circuits ZFL-1000LN 15v Amplifier & ZFSC-4-1 4 Way Splitter question

While the noise figure of that amplifier isn't the best, I've used to to show some friends locally what a preamp can do for them.

This is another view of a similar setup with approximate prices etc.
Mount the amplifier at the antenna and leave out the splitter if you don't need it.
So I bought this Antennacraft ST2 "Scantenna"

Rich

And .... Here are some of my 'spare' amplifiers.



And another thread about getting power to your preamp.

800 Meg preamp
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Last edited by rbm; 07-18-2014 at 10:43 AM..
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Old 07-18-2014, 12:51 PM
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I've noticed that the Holland LA-520 amplifier is getting hard to find.

Here's another that will do just as well.
NEW CABLETRONIX IN LINE SATELLITE AMPLIFIER 20DB GAIN 40-2150 MHZ
New Cabletronix in Line Satellite Amplifier 20dB Gain 40 2150 MHz Power Passing | eBay

You have to read the specs. closely.
Most inline 'satellite' amplifiers are only good for around 940-2100 MHz

Rich
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Old 07-18-2014, 7:35 PM
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First you've got to ask yourself: If there is a nearby lightning strike, and it blows the pre-amp up on the mast, can I get it down easily to replace it? My opinion from working with weak signal SSB/CW ham type stuff on 6,2, and 432 .... unless you're 100% hardcore in copying the weakest of the weak signals, then I would just put one in the shack. SO much easier to swap in/out or fix when broken, and it still helps copy the weaker signals. Don't get me wrong, I'm still PRO pre-amps, but just use it in the shack.
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