From 20-176 to ST-2 (Scantenna) - Results

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fuzzymoto

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I have been happily using a Radio Shack 20-176 antenna for 4 months. It is mounted on a 10-foot mast on my roof. I recently purchased an ST-2 (Scantenna), reinforced it with a fiberglass rod and mounted it on the mast late Thursday night. The 20-176 sits at the top of the mast and the ST-2 cross-member is mounted just above the mid-point of the 10-foot mast (maybe about 7-feet up). This allowed me to get the bottom of the main ST-2 element above the roof and the top of the main ST-2 element still a little below and a little offset from the lower 20-176 elements. Both are on identical RG-6 coax.

There has been quite a bit of discussion on mounting 2 antenna on one mast and also comparing the 20-176 to the ST-2; so I wanted to post at least some preliminary results. I've been monitoring for a few hours a night for only 2 nights so these are early results.

After 4-months of use on my 20-176 I had a pretty good idea of what I was able to hear and how strong the signals were. With the ST-2 it is obvious that I'm hearing new frequencies and stronger signals. I'm MOSTLY in the 150-161 range but I can tell you all sorts of air frequencies are now popping up in the 120-137 range. It also seems to do better on the 450-470 range and acceptable in the 40-50 range.

Of course it is very hard to accurately compare the two antenna because on many signals I get 5 full bars on BOTH antenna. And in fact on one or two frequencies in the 40-50 range my magmount Antennex ABSCANC (also on the roof) does better than both but this is no huge surprise.

It is clear that the reception appears better and I am hearing more. My best test was hearing our local pizza delivery place talking to their car. On the 20-176 the pizza place was clear but the car was silent. On the ST-2 both were clear. This same thing happened on a fire call also when they switched to their fireground freq. The ST-2 is clearly better for me in my location and on my scanner with my frequencies.

I'll spend some more time with it and see if I can quantify the results even more. On night one I heard a great nuclear power plant EMA drill from an area about 40-miles away. Perhaps I just never heard it before on the 20-176 but something tells me it was the ST-2 that pulled it in.

Time will tell how well this ST-2 does. Clearly it is better than the 20-176, however I'm sure the rain, snow and wind will give it a good test over the long run.

I will post more as I have more time with the new antenna. I just cleared out ALL of my search lockouts and broadcast screen entries so I suspect I'll be busy testing this new antenna out.

Mark me satisfied and the ST-2 worth the money and effort.
 

hiegtx

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Fuzzy,

I think you've proved the point to yourself, and others, that two antennas can compliment each other. The ST-2 is apparently pulling some signals that the old faithful 'Sputnik' couldn't quite reach. But you've got others, either strong enough, or close enough, that get full signal with either antenna.

Now, when you want to search. you can feed the ST2 to the 330, and the 20-176 to your other scanner, to keep track of local goings-on.
 

safetyobc

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yep, I love my Scantenna. Now that I have fixed my coax troubles.....at least i think I have. The Scantenna is a GREAT deal at $52 shipped. They could easily charge more if they wanted to. If my Scantenna is damaged, I'll definately buy another, no questions asked.

matt
 

fuzzymoto

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I plan on keeping the ST-2 on the 330T since that's my main unit and switch between Spitnik and the ABSCANC on my other scanner for local coverage.....at least that's the plan.

And yes I agree...they compliment each other and every once in a while Sputnik will pull a little stronger on an occasional freq.

So far the wife is calling the ST-2 'Voyager' but she said she's working on a much better name. I keep telling her that now with THREE antenna on the roof and only 2 scanners I'm wasting that poor ABSCANC. ;>

And yes hopefully the coax beetles or coax birds don't perforate my coax. Yep it's a great price and I didn't even use the 50-feet of RG-6 that came with it......YET!

It's been raining here for close to 24-hours and so far no problems. We'll see how well it stands up in some bad storms. I also worry about a falling branch taking it out....but as you said....it's fairly cheap to replace if it does get smacked.
 

AndrewC75

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fuzzymoto said:
So far the wife is calling the ST-2 'Voyager' but she said she's working on a much better name. I keep telling her that now with THREE antenna on the roof and only 2 scanners I'm wasting that poor ABSCANC. ;>

I'm happy when my wife refers to anything radio related as something other than "that scanner geek stuff". You've got it good.
 

MB

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I wonder how these two compare to the Niljon or Austin Ferret? I have been thinking about getting the Niljon.

Does anyone have any opinion on how the Niljon holds up against the Scantenna or the 20-176?
 

MB

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So what did you do to finally fix your coax troubles?

Also I see that you like the Scantenna. What other antennas have you compared the scantenna to?

safetyobc said:
yep, I love my Scantenna. Now that I have fixed my coax troubles.....at least i think I have. The Scantenna is a GREAT deal at $52 shipped. They could easily charge more if they wanted to. If my Scantenna is damaged, I'll definately buy another, no questions asked.

matt
 

fuzzymoto

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Ha...I think she thinks:
a) they are awful noisy sometimes
b) interesting sometimes...and
c) that I seem to enjoy them so why not...

She's already saying it's only a matter of time before I add one to my car....hmmm...one in the car....

MB: I don't know much about either of these antena but I'd love to see a link AND a comparison if anyone has all 3 or 4 up and running.
 

safetyobc

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MB said:
So what did you do to finally fix your coax troubles?

Also I see that you like the Scantenna. What other antennas have you compared the scantenna to?

New Coax.

None other than stock duckies. But me constantly receiving agencies at 75 miles on VHF-High is pretty impressive, at least to me.

Since the new coax was installed, I have been receiving a trunking system from 60 miles away. Don't know if it is just good ducting but has been consistant every night for about a week now. I hope it stays. I like it!

matt
 

fuzzymoto

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Whoa...I'm picking up a University security call box (and security department) over 50-miles away. The signal is clear and they are using a DPL code too....good thing since this freq. is also used by our county prison.
 

RISC777

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Scantenna Additional Input

The ST2 receives great, still testing/comparing (against a Diamond omni and a 800-900 yagi). The two things that I've personally had to do was:
1. Straighten the goober out. After un-boxing, getting it up on the mast, unfolding it . . . had to 'straighten' it out. Not all elements were "in line." It was shipped just fine, even had a length of wood in the box to eliminate chance of it being bent/crushed, etc. Cool idea I thought to myself.
2. Strengthen it up. Due to regular winds (15 to 40 mph) it's 'required' in my opinion. I didn't research the thread, but someone used a fiberglass bicycle flag rod to run the center. Good idea if anyone experiences some to a lot of wind loads on their ants.

Last thing to do is find a supplier of the balun/transformer. I'd rather have two or three sitting around as spares in the event they go completely or get flaky. I do appreciate the boot it ships with to cover the connection point, too. Littlesilicone bead at the boot/balun end and a little around the cable at the opposite side does nicely (no taping, etc.).
 

fuzzymoto

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My elements looked OK at least to my eye. I did add the fiberglass bicycle flag modification myself and used RShack coax seal around the book and all connections. So far so good. It's basically rained here for 3 days and last night we had quite a T-Storm....so far no problems but it is very early for this antenna.
 
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RISC777

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Test For Griggles & Gins

fuzzymoto...I did an experiment tonight. Thought you might appreciate or enjoy this.
Dropped the ST2 down to roof level.
Changed over a 396 from the Diamond D130J 35' up above roof level to the ST2 at roof level.
Focused on difference with a local EDACS system that is approx 14 to 15 miles away.
On the Diamond I'd get 2 bars of signal strength on the display.
On the ST2 at roof level I get all 5 bars.

For $30 and some delivery/handling cost...heh...ST2 is, mmmm, way more worth it!?
:-/

Now it's decisions and decisions on what to rearrange as far as scanners and systems monitored to which ant (not counting the yagi). Thank goodness for two Stridsbergs for mixing and matching.
:)

Another side note, rather than the suggested and tried with success bicycle flag fiberglass reinforcement of the ST2 strategy, I used an radio antenna off of a car to do my reinforcing (lots of wind here for me). It just seemed a bit more stiff than the fiberglass.
 
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fuzzymoto

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Thats great. My experience has been the same...even at a lower height my ST-2 outperforms my 20-176 pretty consistently. I have my ST-2 plugged into my good scanner (the one I search the most with) and I alternate the other scanner between the 20-176 and an Antenex ABSCANC depending on what I'm interested in. Most ofthe time it is plugged into the 20-176 so perhaps I'll need another scanner so my ABSCANC isn't so lonely. I've thought about playing with a Yagon on a rotor but so far there isn't anything I'd be targetting that I'm not already hearing on the ST-2.

Good idea on the car antenna...I guess time willl tell how the ST-2 does in wind and snow.
 

namrats

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st 2

I dont know why i keep hearing the ST2 is 50+ dollars ( i am certain people are paying the 50.00 price) i just dont get it......i think i paid UNDER30.00 including shipping from STARK ELECTRONICS...I called them and i got it wihtin a week...no i dont sell them and i dont get financial compensation either.

Gilbert
 

fuzzymoto

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Mine was about that same price. I think some are $50 with shipping also.
 

Ghost4658

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I have a ST2 on my tower with a 20-176 on the top of the tower.
The 20-176 is only 12in. above the ST2 and each ant works fine.
I paid $52 for the ST2 with coax and shiping total.
The ST2 is a very good ant.
 

RISC777

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Hoofy said:
Just out of curiosity, is the coax type and length the same on the antennas you're comparing ?
Hoofy : The ST2 is on the RG-6 it ships with, for now. The Diamond discone is on LMR-600. So since the ST2 is on cable that is 'more lossy' than the Times Microwave, it has made quite an impression on me.

Hoofy said:
Who makes the ST2 ?
Antennacraft. Stark is least expensive cost I've seen, Universal though is where I bought mine due to customer service.
 
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