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Reviews Categories | Antennas: HF Portable (not mobile) | Alpha Loop 10-40 Meter small magnetic antenna systems Help

Reviews Summary for Alpha Loop 10-40 Meter small magnetic antenna systems
Alpha Loop 10-40 Meter small magnetic antenna systems Reviews: 20 Average rating: 5.0/5 MSRP: $300
Description: The 10-40 Meter Alpha Loop Antenna systems are perfect for Condo, SOTA, Beach, RADAR, base, or any place you need a High-Q directional HF antenna. The aluminum element based Alpha Loop Sr provides higher power rating and comes with a 6 1/2 foot tripod. The coaxial based element Jr version brings you a lower power rating in a smaller package, which deploys quicker. The Alpha Loop Jr assembles and dissembles from the included field bag in 60 seconds. As each of these antennas are a loop, there are no taps on coils and no counterpoise wires needed. Both have a built in tuner to cover 7 to 30 MHz, which provides continuos coverage from 40 Meters through 10 Meters. Additionally, high noise rejection is one of the favorite features of many operators in RFI prone environments. Prices will vary from $199-$349, depending upon options or models are selected.
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VE3KCY Rating: 5/5 May 26, 2014 20:38 Send this review to a friend
Great QRP Antenna   Time owned: 0 to 3 months
Had a bit of time yesterday afternoon to play with my FT817 & Alpha loop antenna that I brought home from Dayton. Made a 1,600 km contact on 20 mters SSB. Power out at 2.5 watts. Loop on tripod at 6 feet. I was impressed !! Station did have a beam pointing in my direction, the op at other end didn't believe me when I told him what I was running.
Definitely give it a 5 & recommend this loop to any QRP op
WD0BC Rating: 5/5 Apr 10, 2014 20:04 Send this review to a friend
GREAT UPGRADED UNIT  Time owned: 0 to 3 months



Received one of the first from the factory.

Alpha Micro-Tuned Loop comes complete with a 6' metal tri-pod of good quality.

Unit comes well packaged in its own nylon carrying bag. All parts neatly and professionally finished. Even includes some extra bolts and wing-nuts in case you loose some.

Setup takes approximately 15 minutes. Fit together nicely and forms a solid loop.



To TUNE the MICRO-TUNE UNIT you simply move the tuning knob around slowly to find the "sweet spot" using the "SOUND" method or use an analyzer.

Watch the POINTER under the tuning knob move around and point to the underlying scale. When the correct SWR is established make note of the scale readings and the positing of the mark on the tuning knob itself.

These recorded pointer positions give you an EXACT setting for each frequency. You can pre-tune all the frequencies you work and then easily return to them.

Compared to the other guys the ALPHA MICRO-TUNE LOOP BEATS THEM ALL HANDS DOWN !!!!!

The efficacy of these loops is legendary and I believe that the ALPHA MICRO-TUNE LOOP is the best product out there.

I am VERY pleased with the product and the communication from Steve of ALPHA ANTENNAS....looking forward to an EYEBALL and a ham fest very soon.

KD0YSW Rating: 5/5 Apr 1, 2014 05:42 Send this review to a friend
Fantastic Antenna!!  Time owned: 0 to 3 months
I have had the antenna only for about a month. It has been used indoors and have managed to complete 2000 mile QSO's from nothern lattitudes (weak reports but you can't expect miracles) so far. Using with a KX3 which it does match very well. No problems thus far. For QRP and limited space, this is an unbelievable antenna. Have miracle whip and other loaded whips that really are only good for receive. This one really gets out the signal though you have to tune fairly frequenty it is easy with the autotuner on the KX3, just use qrm to tune the antenna for strongest noise, tune, and you are set.
W0GI Rating: 5/5 Feb 26, 2014 19:01 Send this review to a friend
QRP Heaven  Time owned: 0 to 3 months
Ok, if you want an antenna that does the job on QRP, this is it.

Magnetic loops are High-Q, so this antenna does require some work tuning for best performance. If you want an antenna, that you tune, then have the whole band available for operating, this isn't for you.

If you want the most efficient antenna possible with a small form factor, and don't mind retuning when you move +/- 5KHZ, then this is a good choice. Make no mistake, you can't tune a magnetic loop on 14.175, and have a good match at 14.200 without retuning.

Sure, you can use an auto-tuner, to make your transmitter happy, but you won't be transmitting the maximum magnetic wave.

If you want to work maximum stations, leave the tuner off, and tune the antenna.

High-Q means narrow bandwidth. It also means maximum efficiency when tuned properly.

This is a great implementation of a portable loop. Everything goes together well, quality hardware, and a great carrying bag. It went together in a few minutes, and I was having a rag chew on 14.200 on my patio a few minutes later with my K2 using 10 watts, from Colorado to Wisconsin. On CW, this thing is going to be incredible, even with 100mw.

I do have an AA-600 analyzer, that makes tuning a snap.

Yes the variable capacitor on the base is touchy, as was mentioned, and a reduction drive would help, but with some practice, a good match is not hard to get, once you get used to the fine touch needed.

Bottom line is, more work = best possible performance. I will be taking this and my KX3 up to high attitude once the temps get warmer, and will be having a blast. :>)

And it will all fit on my Dirt Bike. Come on spring.......

WA7JCL Rating: 5/5 Feb 7, 2014 18:30 Send this review to a friend
Read my review for a negative and positives  Time owned: 3 to 6 months
The Positives: I work DX from my Alpha Loop with only 50MW (yes, milliwatts) from my bread board QRP cw-rig, and that's with the antenna inside my shack! The Alpha Loop and the Field Bag it comes in is tough as nails and I am able to set it up on the INCLUDED Tripod in just a few minutes.

The Negatives: The knob is pretty sensitive, so I have to use the noise floor to tune it first, then you can use an SWR analyzer if you feel like it.

Resolution to the Negatives: I fashioned a U-Shaped piece of metal in my vice, which I affixed to the Alpha Match with wood screws, to which I mounted a Jackson Brothers Reduction Drive with a 6:1 Ratio that fit nicely on the shaft that is used to tune the loop antenna. I did this for about $25 in parts. It works great, but I'm not sure I'd do it again. I've recommended to Alpha Antenna that they make a similar improvement, which I am betting will raise the price of the antenna.

More Positives: At 10 watts, the loop really does perform as well (while sitting on my deck), as my other antennas that are outside at 25 feet, which are resonant, even when I run them at 100 watts.
KC6NRE Rating: 5/5 Jan 3, 2014 08:25 Send this review to a friend
Best QRP Antenna Ever Built  Time owned: 3 to 6 months
Till now my QRP antennas of choice were dipoles cut to resonant length & the Alex Loop, and for 100 watts the buddipole antenna. Enter the Alpha Loop Jr and DX-Mil. The Loop is a directional Magnetic Loop Antenna and gives similar results with 5 watts, as I have had with 100 watts on my Buddipole. My elmer was correct! "If you can't do it with 5 watts, then you are using the wrong antenna!" Not to mention that with the Loop I can Null Out even an S9 signal by turning it. Plus, I've consistently put 20 watts into the Alpha Loop with no problems. So long to all of those wires that really did take up more space in my go kit than the Alpha Loop Jr. For times when I need/want high power, I now use the Alpha DX-Mil for up to 1KW (the Buddipole is only 250W), but see my seperate eHam review for my comments on the DX-Mil antenna.

The Alpha Loop is VERY compact and it is robustly built with American Made components. Something you can't say about the Alex Loop, not to mention that 40 Meter performance from the Alpha Loop is far better! You can assemble either loop in 2 minutes, but as soon as you take the Alpha Loop out of the commercial to military grade field bag and pick it up you will know that you have held an antenna that will hold together for years and is much more advanced in its' design than the Alex Loop. Then, once you use it, you will never part with it. It's just that much fun because the Alpha Loop delivers immediate results.
WD4ELG Rating: 5/5 Dec 5, 2013 19:37 Send this review to a friend
It works quite well.  Time owned: 0 to 3 months
Ordered it on the website after reading reviews and comparing to AlexLoop. My first loop antenna, want something to take on the road and use from hotel for QRP. I don't have time to build, and for my money I want a good quality piece of kit.

My goal is mostly digital HF, maybe some CW. I am not new to QRP, but I am not a full-time QRP operator and instead am mostly a QRO DXer. But I want something more than just PC remote into my home shack when on the road. I figured it would be fun to see what 5 watts and a loop antenna could do from a hotel room.

I ordered it instead AlexLoop because it came with a tripod already (both seem to be excellent loop antennas, so it was a bit of a coin toss between Alpha and Alex designs).

Package arrived US Postal Service 3 days after ordering it online. I unpacked it. First thing the XYL (not a ham) said was "wow, nice carry bag it comes with." I said "yep." Next thing she said was "wow, what a professional looking set of equipment including the tripod." Again I said "yep." When I put it together, she said "THAT is IT? Where are all the wires? The spreaders? The elements?" (I have multiple wire dipoles, a hex beam and yagis for 6 and 2). I started explaining about magnetic loop antennas. And then she said "Sorry I asked. Go have fun with it, I am off to see our horse at the barn." (Her hobby).

When she returned, she asked me "Did you talk to anyone with it?" "Yes I did," was my reply. Bahamas and Arkansas on 40 CW. Also heard some JT65 DX (SA, EU) on 40. Of course, tons of DX heard on higher bands.

Some observations:

1. The tripod arrived broken at the base. I called Steve, the owner, and left a message. It was 7:30 PM local. 5 minutes later he calls me back and says he will ship another one the next morning. BAM! A 5 on customer service.

2. I mentioned that the manual was a bit "brief" with no assembly pics, but I understood the construction from looking at the website and watching the YouTube videos. Steve said that another rev would be coming out soon.

3. Assembly was easy, 10 minutes from first unpack to on the air. All quality materials, with extra hardware in case I lose some. A 5 on construction and foresight.

4. Tuning is done by adjusting the knob for max background noise. Simple. A 5 on ease of use.

5. Performance - it is not an outside wire. Users need to be realistic with expectations (use digital modes, only call CW stations that are strong, don't expect much on SSB). I found the loop to be about 5-10dB down from my off-center-fed 135 foot dipole at 64 feet. The surprising thing was that I could make contacts on 40 meters at all. Quite pleasant to discover that I could, since 40 is my favorite QRP band. A 5 on performance against expectations.

Interesting note on bandwidth - the high Q requires adjustment for resonace every few kHz (as it should be with this antenna). But I noticed that the bandwidth on 40 was about 30 kHz between 2:1 SWR points, and much sharper on 15 meters (7-10 kHz). It also took more time to find SWR null on 15 meters as it was very sensitive.

After the New Year, I expect to be doing a lot of travelling, and will provide a subsequent review on the antenna then.
W3WEB Rating: 5/5 Nov 8, 2013 13:03 Send this review to a friend
Fantastic  Time owned: 0 to 3 months
This is the first antenna that I've had success with because I live in 2nd floor apartment with limited space, surrounded by power lines, and no access to ground. Tried other antennas and could never transmit anything on HF bands.

Enter the AlphaLoop - Very easy to assemble, and when I placed on the balcony and did a quick adjustment to the alphamatch, the band came alive. A few minutes later made my first contacts from Phoenix to LA, Seattle, and Colorado. Made several more on 20 and 40 meters. At QRP levels. Wow!

Like others have said here, AlphaLoop is very durable and you can tell it's made from quality components. Bravo to Alpha Antenna for making such a fine product. I'm so excited to be on the air now!
WN0ARD Rating: 5/5 Oct 13, 2013 08:09 Send this review to a friend
Ham friendly company & superior antenna  Time owned: 0 to 3 months
Just works incredibly well right out of the bag. Love the price and the tripod is a bonus! I called Steve/N0TES who answered all of my questions with a friendly smile that I could hear through the phone. I then ordered it online after talking to him at the beginning of last week and it arrived in time for me to use it this weekend. This is the way ham radio was supposed to be. A hand built antenna from one ham to another, which works better than anything I have ever used.
KC9SXB Rating: 5/5 Oct 10, 2013 06:40 Send this review to a friend
Great performance, price, and nice people  Time owned: 0 to 3 months
For $300 the Alpha Loop came with a Self Supportive Magnetic Loop Antenna (MLA) made from Aluminum sections that are easily assembled with a few screws. Also included in the price was a padded field bag with shoulder strap. Plus the it came with a 6 1/2 foot Aluminum tripod, all of which fit nicely in the bag that has a padded front pocket large enough for either my Elecraft KX3 or 817-ND.

The antenna allows me to work everything I can hear when sitting outside on my porch, which is a first for me on SSB using 10 watts. It is also very quiet, which is a huge plus because I primarily use it inside while placed in-front of a window.

By design, the Alpha Loop physically off-sets the feedline away from both the inner and outer loops with a seperate black box at the top with a silver plated SO239. This seems to be a unique feature not found in other MLAs.

Tuning the Alpha Loop was fairly easy, just a twist of the knob till the highest background noise is heard gets you close and an antenna tuner can take care of the rest. For perfect tuning, I'd recommend an antenna analyzer or a good cross-needle SWR meter.
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