When I first started doing activations in the Parks On The Air (POTA) program, many of our regional parks in North Carolina were ATNOs (All-Time New Ones).
An ATNO is what it sounds like: a park that is in the POTA network but has never been activated.
ATNOs were plentiful in the early days–before the rise of POTA. In those early days, I found that if a park was even slightly inconvenient to access, it would be an ATNO.
In fact, I reckon that nearly 40% of the parks I activated in 2020, were ATNOs. This wasn’t because I made a particular effort to hit ATNOs. Rather I made an effort to activate unique parks that year; it was the beginning of the pandemic and this was a fun activity for me–an excuse to explore regional public lands–so ATNOs were among them.
With POTA participation having grown by orders of magnitude in the past few years–a very welcome thing indeed–ATNOs in North Carolina are extremely rare. I just checked and we have two ATNO parks out of 230 parks in NC. I can pretty much guarantee that our two ATNOs have either just been added to the database, or they’re very difficult to access.
POTA hasn’t been in Canada as long as it has in the US and, in some regions, it’s just catching on.
As we were plotting our summer trip to Canada, I made a list of the parks I wanted to activate and Grands-Jardins was at the top of that list.
When we spend the summer in Québec, we always fit in a few visits to Grands-Jardins. The mountains there are beautiful with rounded tops and rocky faces. Via ferrata is a very popular summer activity in the park, but our family enjoys the hikes, the overlooks, and I especially love the back country roads!
I say “lately” but in truth I’m always tinkering with something in the shack.
The radio room/office at my QTH is pretty small, though, and I don’t have a dedicated, full-time workbench. I’ve been mentally re-arranging the room and trying to sort out a way to make space for one because it would be so nice to have a spot where my soldering iron could remain hooked up at all times.
For the moment, when I work on kits I use our dining room table so I try to stick with one or two session kits as opposed to the multi-day variety.
I have a lot of field antennas, so I don’t really need another EFHW, but then again I like having a dedicated resonant wire antenna with each of my radios and, (hey hey!) it’s a great excuse to build a kit!
KM4ACK Image
I purchased the KM4ACK kit and received it within a week. Building the antenna was incredibly straight-forward. Jason packaged the components in small bags so finding parts was easy. I really appreciate kits that aren’t one large “bag-o-parts.” Continue reading Putting the KM4ACK End-Fed Half-Wave on the air at Table Rock!→
I’ve been a ham radio operator since 1997, but until 2016, I had never purchased a pre-made portable antenna–I had always built my own.
During the 2016 NPOTA (National Parks On The Air) program, however, I purchased the EFT Trail-Friendly end fed 40, 20, and 10 meter resonant antenna and it quickly became my favorite field antenna. I found that it was simply built better than I could have built a similar antenna at home.
Pre-made antennas, though, come at a cost. Most time-tested, trail-friendly, portable antennas will typically set you back $90 US or more. You can make similar antennas much cheaper especially if you already have some of the parts (wire, toroids, RF ports, enclosures, etc).
That price point is very attractive because I believe if I built this antenna myself and needed to buy new parts, I might easily sink $20-25 in it.
Most MFJ products are manufactured in the USA and the company has an incredibly extensive and diverse selection of items in their catalog. Why I had forgotten they also sell antennas is a mystery to me.
MFJ is well-known for offering products that are basic, affordable, and accessible (they’re available directly from the manufacturer and through most major radio retailers across the globe). I wouldn’t expect their antennas to be engineered like Chameleon Antenna, for example, but I would expect them to work well and get the job done.
I know the folks at MFJ and (in the spirit of full disclosure) they even sponsor QRPer.com, so I reached out to them and asked if I could evaluate their MFF-1984LP which is their most affordable field wire antenna. They kindly sent one my way and I took it to the field last week.
I should add here that MFJ welcomes critical reviews, which is one of the reasons I asked them to be a sponsor. That and, well before they knew me, I was an anonymous customer and they repaired my MFJ roller inductor tuner for free a good two or three years after the warranty expired. My experience with MFJ has only been positive.
First impressions
The antenna looks exactly like the product photo in their catalog (see above).
For a field antenna, the coil enclosure is a little on the large side (especially compared with my EFT Trail-Friendly), but it’s still very backpack-able. Knowing MFJ, they kept costs at bay by using one of their standard enclosure boxes for this antenna.
The enclosure also has an open grill to allow the coil to dissipate heat (see above). I found that a bit surprising since the core is so large inside, but I assume some heat must be generated if you’re running 50% duty at a full 30 watts (the maximum rated power). The matching network impedance ratio is 49:1, so there will be loss and heat.
The 66 foot radiator wire has a dark jacket that glides nicely over tree limbs and doesn’t encourage tangling when unwinding.
The end insulator is made of a thin plastic/composite material that is lightweight and shaped so that it won’t snag on tree limbs.
To the field!
Hey–the proof is in the pudding, right? Let’s put this antenna on the air and make a real-time video of the activation!
Last Wednesday (February 17, 2021), there was a break in the weather so I made a detour to Lake James State Park (K-2739) en route to visit my parents for a few days. I left the house without deciding what park to activate, but picked Lake James because I knew I would have access to tall trees and my pick of operating locations.
Deploying the MFJ-1984LP is no different than deploying any other wire antenna. It was super easy using my arborist throw line. That thin, rounded end insulator did certainly glide through the tree branches with ease. No hint of snagging.
On The Air
I connected the antenna directly to my IC-705 with no ATU in-line. Hypothetically, I knew this antenna should be resonant on 20 meters where I planned to start the activation.
Keep in mind that pre-made antennas are often designed to be a tad long and need to be trimmed so the operator can tweak the resonant point for their preferred spots on the band. Since I tend to use the lower part of the band for CW, I typically leave my antennas with a resonant point somewhere on the upper side of the CW portion of the bands. It’s not super critical for EFHW antennas because they tend to have ample bandwidth to give a full meter band good matches.
I had not trimmed the MFJ-1984LP, but decided it should be “resonant enough” for my purposes.
I found a clear frequency on 20 meters and checked the SWR. It was spot on at 1.3:1 on 14,031 kHz! Woo hoo!
I started calling CQ and collected several stations in short order despite the poor propagation that day.
I then moved to the 40 meter band and discovered the antenna also gave me an excellent match there. I started calling CQ POTA and was rewarded with a steady stream of contacts.
I imagine I could have racked up a lot of contacts at that activation, but I made up my mind that I wanted to fit in another quick activation afterwards, so cut it a bit short.
In the end, here’s a map of my 18 contacts made in 26 minutes of on-air time:
Not bad for five watts and a wire!
Video
I made a real-time, real-life, no edit video of this activation which starts shortly after I deployed the MFJ-1984LP and ends a few moments after my last QSO. Against my better judgement, it includes all of my mistakes (including my inability to form the number 4 that day!):
No antenna is perfect and each time I start a product review, I keep a list of pros and cons. Here’s my list for this EFHW antenna:
Pros:
Very affordable at $49.95
Effective: results so far have been excellent
EFHW is a proven field antenna design and resonant on several bands
No coil on the radiator to snag in trees (see con)
Backed by MFJ warranty
Purchase supports US manufacturing
Cons:
Bulkier than comparable low power field antennas
No built-in winder (MFJ should consider altering the design to include one!)
Radiator is 66 feet long since there is no in-line coil to electrically shorten the length (see pro)
End insulator is effective, but feels slightly flimsy
In the end, there’s no magic here: the end fed half wave is a time-tested, proven antenna design and the MFJ-1984LP delivers. In terms of performance, I couldn’t be more pleased with it right out of the box. This isn’t a military-grade antenna, but it should last for years with proper use.
POTA activators that have access to trees in the field will appreciate the MFJ-1984LP. I should think you could also make an effective “V” shaped antenna if you have a telescoping support that’s 29-33′ tall.
I’m not so sure the average SOTA operator would find this antenna design as convenient–especially on high summits where you’re near or above the tree line. It could be difficult deploying a 66′ wire. That and this antenna is bulkier than other designs. If you’re backpacking it in, you typically want the most compact solution possible (this is where the EFT Trail-Friendly, Packtenna, and QRPguys designs really shine).
I will certainly employ the MFF-1984LP regularly–especially on days with less-than-stellar propagation. I think this might become a go-to antenna for the MTR-3B, LD-11, and IC-705 since all of them lack an internal ATU.
If you’re looking for an affordable, effective wire antenna, I can certainly recommend the MFJ-1984LP.
Do you have an MFJ end fed half wave antenna? What are your thoughts?
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When I first started doing activations in the Parks On The Air (POTA) program, many of our regional parks in North Carolina were ATNOs (All-Time New Ones).
One of my favorite parks in Québec is Parc national des Grands-Jardins. This is a SEPAQ park located in the Charlevoix Biosphere Reserve.
