Tag Archives: Par EndFedz EFT-MTR

Rendezvous Mountain Field Report: Activating three individual sites on one summit!

Last Wednesday (April 7, 2021), I managed to block out most of the day to play a little radio in the field. When I have opportunities like this, I usually take one of two approaches: either make a multi-park and/or summit run, or go further afield and activate a site or two on my bucket list.

I chose the latter.

Two of the very few sites from my 2020 Park Bucket List that I hadn’t managed to activate were Rendezvous Mountain Educational State Forest and Rendevous Mountain State Game Land. When I created my bucket list, both of these parks were very rare: one was an all-time new one, the other had only been activated once. In 2021, they were still rare but both had activations logged.

When two park entities are this close together, I will do my at-home research in advance and search for a spot where the boundaries of the two parks might overlap opening an opportunity for a one activation two-fer.  Although there are exceptions (like Elk Knob)  when a park and a game land share a common name, there’s a decent chance their boundaries overlap, possibly even in an accessible area.

Fortunately, I discovered last spring that Rendezvous Mountain did indeed have an accessible spot where both the game land and state educational forest meet. I pinpointed it on Google Maps and embedded the URL in my park bucket list spreadsheet:

I can’t overstate how important one of these lists is to an activator who loves exploring different  sites. When the weather outside is horrible and activating isn’t a good option, spend your time indoors doing research for a day when you can hit the field!

Tuesday evening, I decided to finally hit this Rendezvous Mountain two-fer. Since the weather was forecast to be beautiful, so I also wanted to fit in a proper hike, so I started searching for a nearby summit as well.

Click to enlarge

Turns out, there was a SOTA summit called “2543” (named after its height above sea level in feet) that was accessible from a Rendezvous Mountain Educational State Forest parking area. An easy four mile round-trip hike. Score!

Next, I found the 2543 summit on a topo map and compared it with the location I’d already plotted for my two-fer. Turns out, they were very close to each other–likely within 100 meters. I was able to confirm with confidence that the summit and game land could be activated at the same time. The state forest map was a little too vague to confirm its exact boundary.

I originally found this site using the NCWRC maps and topo/trail maps.

Here’s the interesting part: the game land parking area I planned to use was within 50-100 meters of the SOTA summit. If I wanted to, I could easily turn this summit into a drive-up activation. But again, I wanted to hike, so I plotted a trip to the parking area of Rendezvous Mountain Educational State Forest.

My plan was to hike to the summit, activate it and the game land as at the same time, then hike back to the Rendezvous Mountain Educational Forest’s parking area, grab a picnic table and activate the state forest separately.

I arrived on site around 11:30 and spent a few minutes confirming that I was hitting the correct trail (as there are multiple trails in this forest).

The trail head is at the last parking area, simply keep following the paved road which quickly turns into a gravel/logging road.

Turns out, it couldn’t be easier to find the summit trail (should you decide to make this same activation): simply drive to the last parking area in Rendezvous Mountain Educational State Forest, and continue walking up the road past the metal gate. This road will take you past the visitor’s center, turn into a gravel road, then pass the fire tower road on your right.

Simply continue following the main road for two miles. There are a few branches on this road and I did take one thinking I was sticking to the main road, but quickly discovered it was a dead end and had to back-track. In general, follow the most traveled road and you’ll be fine.

The summit is fairly nondescript since it’s lower in altitude and covered in trees. Look for a short spur road, two miles in, near the game land gate (where you could park if you wanted to do a drive-up activation).

As I hiked to the site, I realized that the logging/access road is actually the boundary between the game land and the state forest. A promising sign!

When I arrived at the short spur road that ended on the summit of 2543, I was very pleased to discover that the game land/forest boundary followed the spur road and was all well within the SOTA activation zone! Brilliant!

Rendezvous Mountain State Game Land (K-6941), Educational State Forest (K-4859), and
SOTA Summit 2543 (W4C/EM-082)

The game land, state forest, and summit all met on an old road bed that was flanked by tall trees.

This meant that I could activate all three sites in one go and–since there’d be no need to activate the state forest separately–still have enough time to perhaps activate Kerr Scott Game Land later in the afternoon on my way home.

You can see the state forest sign on the left, the game land sign on the right–both within the SOTA activation zone.

Point of clarification about park boundaries and “two-fers”

POTA is fairly clear about where park boundaries are in terms of counting a park in an activation, “The activator and all the equipment you use must be within the perimeters of the park, and on public property. […] If the park is part of a trail system or river, you need to be within 100 feet of the trail or river.”

In order to claim a two-fer, there needs to be park overlap. Technically,  you can’t straddle a map line between two (non-river/trail) park sites and activate them as a two-fer because you and your equipment can’t be in both places at the same time if there’s no property overlap. In POTA, there is no buffer area around a park unless it’s a trail or river.

SOTA is specific and gives you a 25 vertical meter activation zone which forms a contour line around the true summit (not a secondary, nearly as high area). Little room for interpretation here.

For Rendezvous Mountain, I decided it was a POTA two-fer because I activated on a road that is also a marked and blazed trail used for recreation/access for both the game land and forest–and both of these areas are a part of the over-arching Rendezvous Mountain State Forest.

Had this been a boundary defined by an imaginary (surveyed) line without a common trail or road, there would have been no point of overlap, thus no two-fer.

This was actually the first time I had been in this particular situation. All of the other multiples I’d activated in the past had vast areas of geographic overlap.

Again, no one but the POTA activator actually knows the truth, and it would be incredibly rare that anyone would ever question you after your logs have been submitted. There is no POTA Police and it’s not even a contest–it’s a group activity. It’s all about following the rules to the best of your ability, exercising due diligence,  and being honest with yourself.

Now where was I?

Gear:

At the site, I used my new compact arborist throw line bag.

It worked even better than I had expected.

I was concerned that the line wouldn’t deploy as smoothly as the line does from my larger arborist storage cube, but it deployed perfectly!

On the air

I deployed my Vibroplex EFT-MTR end-fed antenna across the road bed and connected it to my Elecraft KX2 with attached KXPD2 paddles.

This made for a very compact and simple setup: in situations like this, I love the compact size of the KX2 since it can easily fit on my clipboard where I also log on paper.

I also brought along my Google Pixel 3 and made a video of the entire activation (see below).

Propagation was very unstable, but I hoped that this site would be rare enough to attract SOTA, POTA, and WWFF chasers thus helping me log my needed 4 for SOTA and 10 for POTA/WWFF.

I first hopped on 20 meters CW where I quickly worked seven stations in eight minutes–from Utah and Arizona, to France, Spain and Germany. An excellent start!

I then hopped on 30 meters (using the KX2’s ATU instead of removing the SMA cap on the EFT-MTR), and worked one station in Missouri.

Next, on 40 meters CW, I logged another six stations in six minutes.

I then connected the microphone and worked a Summit-To-Summit contact on 20 meters SSB. I was very pleased to put K4AAE/P in the logs because I had difficultly working other stations on 20M SSB.

Finally, I moved to 40 meters SSB and worked a total of four stations in five minutes.

All-in-all, a total of 19 contacts logged in a total of 45 minutes on the air.  Not bad for QRP on a poor propagation day!

QSO Map

Video

I made one of my real-time, real life videos of the entire activation. Check it out below or via my YouTube channel:

Photos

As I hiked back to the car, I took my time and enjoyed the weather, the hike, and the solitude. Here are a  few extra photos from the camera roll:

Thank you for reading this field report!

If you ever pass by North Wilkesboro, North Carolina, I highly recommend this site. It’s very rare that you find a site that is a SOTA, POTA, and WWFF entity and that can be activated by a pleasant 4 mile RT hike, or as a drive-up.

I’ll plan to hit Rendezvous Mountain again next year!


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Activating the New River State Park with the Icom IC-705 and EFT-MTR end-fed antenna

On Monday, March 22, 2021, I performed three QRP field activations in one day. I started off the day with a visit to Three Top Mountain Game Land, and then headed to Mount Jefferson State Natural Area for a POTA and SOTA activation before heading to my final destination: New River State Park.

I had never visited the New River State Park before but I knew since it was an NC State Park, it would be a beautiful site…and it certainly was.

It being a mid afternoon on a Monday in mid-March, I had the entire park to myself.  Well…at least I had the entire park from my access point (this particular park has a number of entry points).

Sadly, I didn’t have a lot of time to explore the park nor any of its trails, because I was on a fairly tight schedule.

New River State Park (K-2748)

I decided to deploy my EFT-MTR 40/30/20 end fed antenna and pair it with the Icom IC-705. Since New River had a spacious picnic area with numerous tall trees, setup really couldn’t have been easier.

Gear:

In the video below, I actually demo how I used my arborist throw line to deploy the EFT-MTR antenna.

On The Air

While the weather and the POTA site were ideal, propagation was not.  I knew that going into the site and that’s exactly why I deployed a near resonant wire antenna instead of a vertical.  I say “near-resonant” but the EFT-MTR is actually a resonant antenna on 40, 30 and 20 meters–I repaired mine recently, however, and it affected the resonance. I need to take an antenna analyzer to it and sort that out. In the meantime, though, I simply used the mAT-705 Plus ATU to take the edge off of the SWR.

I ended up only using the 40 meter band to make my 11 contacts in the span of about 33 minutes. Considering the propagation and the fact it was a Monday mid-afternoon, I was pleased with the results.

If I had the time, I would have moved up to the 30 and 20 meter bands, but again, I had a schedule to maintain so I went QRT after working my buddy K8RAT.

Video

Here’s a real-time, real-life video of the entire activation:

I’m definitely coming back to the New River State Park later this year. In fact, I think this would be an ideal spot for a family canoeing and camping trip.

As I’ve said so many times before, this is what I love about POTA and WWFF: they provide an excuse to check out public lands that wouldn’t normally be on my radar.  New River is a perfect example since it’s a little too far from the QTH to be a day trip, yet a little too local to be a destination we’d typically plan in our cross-country travels.

Thank you for reading this report.

73,

Thomas (K4SWL)


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POTA Field Report: A CW ATNO at Three Top Mountain Game Land

Last Monday (March 22, 2021), I had another opportunity to play radio for the bulk of the day. These are rare opportunities–although I did have another open day only a few weeks ago–so I ty to take full advantage of them! The weather was perfect, so I decided to make a detour to Ashe County, North Carolina en route to visit my parents.

I haven’t been to Ashe County in the better part of a decade although I love this pretty secluded part of western North Carolina.

Ashe County is very much a destination–not a place you’d easily happen upon in your travels. It’s very much worth the detour, though, as it’s close to Boone/Blowing Rock, the Blue Ridge Parkway, and a number of other spots outdoor enthusiasts would love. The towns of Jefferson and West Jefferson are everything you’d expect from small town NC: charming and friendly. Plus, they have some excellent sources of cheese!

I plotted a three park, one summit run for that Monday. I’d have about one hour at each site, which would hopefully be enough to set up, play radio, and pack up. All three sites were new to me–meaning, I had never personally activated them.

My first destination?

Three Top Mountain Game Land (K-3869)

I left my QTH around 9:00 local and arrived on site around 11:30. I had researched the most accessible parking area (there were many for this game land) and one that would be closest to my other destinations.

The game land maps are pretty accurate, but this parking area was a little tricky to find as it’s small, elevated off the road, and you have to enter a private driveway to find it. the “Hunters Parking” sign is, let’s say, “discreet.”

Honestly? Finding these sites is all part of the fun.

Gear:

Going into this activation, I knew there would be challenges. For one thing, propagation was similar to the day before: poor and unstable.

Secondly, the Reverse Beacon Network (RBN) auto-spotting functionality on the POTA spots page was not working. That was a bad thing because this game land site had no hint of mobile phone service.

I did anticipate both of these issues though, and took precautions:

  • I contacted my buddies Mike (K8RAT) and Eric (WD8RIF) and gave them my full schedule with anticipated start times for frequencies at each location before leaving the QTH.
  • I also had my new Garmin InReach satellite messaging device that I could use to text Mike and Eric should they not be able to hear me that day.

As I’ve mentioned in previous post: successful activations (especially if you’re under time pressure) always include being spotted to the POTA network. It’s as if you don’t exist if you’re not spotted.

“CW ATNO”

 

Another thing working in my favor at this particular site  is that it had only been activated a couple times before and both of those times it was via phone only. My activation would be the first time CW had been used at this site for POTA. This means nothing in terms of the Parks On The Air program–meaning, there are no special awards for this sort of thing–but it does give you a bit of an edge because CW hunters will find the site rare and very desirable. They’ll go the extra mile to get logged.

It’s funny: in 2020, I activated numerous proper ATNOs (All Time New Ones)  for POTA. There were so many here in western North Carolina that just by going to new sites each time, I ended up activating them for the very first time in phone and/or CW.

POTA grew by orders of magnitude last year, though, and now there are so many activators who would love to be the first to activate a site, new entities are often activated within a day of being added. The only true ATNOs left in NC are game lands that have accessibility issues.

On The Air

I deployed my EFT-MTR antenna that I repaired that weekend. I did a very basic repair, attaching the top end of the radiator back to the in-line coil/trap. Somehow in doing this I changed the antenna enough that my SWR on 40 and 20 meters was in excess of 2.5:1.

No problem: I employed my T1 ATU to bring the SWR back down to 1:1.

I hopped on 40 meters and immediately started working stations. No doubt, the rarity of this park was providing my spot with a little extra attention.

In 23 minutes, I worked a total of 20 stations: that’s about as good as it gets, especially with poor propagation.

Once the initial group of hunters died down, I went QRT.

Normally, I would spend more time on-site and move up the band, but I was on a tight schedule and realized I hadn’t allowed any time to grab a to-go lunch!

Video

I did make another real-time, real-life video of the entire activation from start to finish. If you care to watch it, click this link to view on YouTube, or watch via the embedded player below:

Thanks for reading this report. Three Top was a fun activation and I was very happy I didn’t have to struggle to validate it.  The next park that day was Mount Jefferson which also happened to be a SOTA site. I’ll be posting the report and video later this week!

73,

Thomas, K4SWL


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A review of the Par EndFedz EFT-MTR triband antenna

Note: the following post originally appeared on our sister site, the SWLing Post.

The Par EndFedz EFT-MTR triband (40/30/20M) antenna

In July, I purchased a tiny QRP transceiver I’ve always wanted: the LnR Precision MTR-3B. It’s a genius, purpose-built little radio and a lot of fun to operate in the field.

It’s also rather bare-bones, only including a specific feature set built around ultra-portable CW operation.

While the MTR-3B has features like CW memory keying, a wide operating voltage (6-12 VDC), extremely low operating current (20 ma in receive), real-time 24 hour clock, and a full compliment of keying adjustments, it lacks other features like a volume control, SWR meter, speaker, and built-in antenna tuner.

Some of those may seem like big omissions but SOTA and POTA activators who like extremely lightweight/portable gear love the MTR-3B for being so purpose-built.

The MTR-3B (and its predecessors) operate on three bands: 40, 30, and 20 meters. These are, without a doubt, my favorite bands when operating portable since antenna lengths are reasonable.

Since the MTR-3B doesn’t have an internal ATU, you need to pack an external tuner or, better yet, a resonant antenna–ideally, one that can be used on all three bands.

Although many of my portable transceivers have built-in ATUs, I rarely use them because I primarily operate with resonant antennas. Resonant antennas are more efficient–giving you the maximum mileage per watt. In addition, they’re also more simple: connect them to the rig and hop on the air. No tuner or tuning required.

Since I keep self-contained field radio kits, my MTR-3B needed a dedicated resonant antenna.

The EFT Trail-Friendly antenna is incredibly compact and quite easy to deploy.

I’ve mentioned in previous posts that I’m a big fan of the Par EndFedz Trail-friendly EFT tri-band antenna (above) which is resonant on 40, 20, and 10 meters.  I’ve activated well over 130 parks with this little antenna.

After I took delivery of the MTR-3B, I borrowed the Trail-friendly EFT antenna from my KX2 field kit. It worked well on 40 and 20 meters, but it doesn’t cover the 30 meter band. Also, by borrowing the EFT from the KX2 kit, I broke one of my rules: never borrow from one field kit to feed another. This led to me leaving the EFT hanging in a tree at a remote park and returning a week later–a three hour round-trip(!!!)–to retrieve it. (FYI, in all fairness, I also blamed my trusty canine companion for this mishap!)

Enter the Par EndFedz EFT-MTR triband antenna

A few months ago, Vibroplex purchased the Par antenna line from LnR Precision.

I was very pleased with this decision as I’m guessing LnR Precision wanted to hand off antenna production so they could focus on the very popular Mountain Topper transceiver line.

Vibroplex is owned by my buddy, Scott Robbins (W4PA), who is not only a successful entrepreneur, but also an award-winning contester and DXer. I’ve known Scott for years and knew he’d not only be a great steward of the Par product line, but also push new innovations.

I emailed Scott asking if Vibroplex had a field-portable antenna that would be resonant on 40, 30, and 20 meters. Turns out, there’s a Par antenna designed specifically to pair with the MTR-3 series transceivers: the Par EndFedz EFT-MTR.

Scott pointed me to a description of the antenna on the Vibroplex website:

The new EndFedz ® EFT-MTR is a 40m/30m/20m tri-band QRP antenna rated up to 25 watts. The “MTR” name was selected as LNR Precision developed this antenna to be the perfect companion to the wildly popular 40/30/20m Mountain Topper QRP transceiver. The EFT-MTR’s total length is 65′ of 22 AWG polystealth wire and weighs less than 4 ounces! It is built with the same high level of workmanship and quality that you have come to expect with all EndFedz ® antennas.

A particular innovation on this antenna: This EndFedz is a little different than previous designs. The user has the option to remove an SMA connector at the end of the 30M resonator to enable just 30 meters, or keep the SMA installed for 40 and 20 meters. Because of the broad bandwidth of the antenna, it is unlikely that it will require tuning in the vast majority of deployments. This is particularly true of 30 meters where the band is very narrow. As our tagline states, “They Just Work!”

Included with the EFT-MTR is the EndFedz Antenna Winder. Conveniently allowing winding up the antenna line to not have a tangled mess at the end. The winder will hold both the antenna and 25 feet of RG-174U coaxial cable (optional accessory).

Scott offered to send me an EFT-MTR to evaluate in the field (disclaimer: at no cost to me) and I accepted without hesitation, of course!

An EFT-MTR field review

I’ve taken the EFT-MTR antenna to three park activations at this point and have formed some opinions about it.

The EFT-MTR fits perfectly in a slide-in pocket in the main compartment of the Boot Boss.

First of all, I couldn’t be more pleased with the size as it fits perfectly in my MTR-3B field kit built around my Red Oxx Booty Boss pack.

I really like the built-in antenna winder: it’s larger than that of the EFT Trail-Friendly, but also much easier to wind up and manage post-activation.

I’ll admit, the length of the EFT-MTR was a bit surprising the first time I deployed it: 65 feet.  Keep in mind, though, I had been used to a much shorter 41 foot radiator on the EFT Trail-friendly. Occasionally, I operate in spots where I simply don’t have the room to deploy a long antenna. I also worried that the EFT-MTR resonance might be negatively affected by winding its way through trees and over a branches. The MTR-3B transceiver does not like high SWR values and has no built-in SWR meter to monitor it. Last thing I wanted to do was harm the MTR finals.

You might be able to spot the feed point of the EFT-MTR at my activation of K-6952 this week.

Fortunately, winding its way through trees doesn’t seem to have a significant impact on SWR.

Each time I’ve taken the EFT-MTR to the field, I’ve also taken my KX2 which I’ve used to read the antenna’s SWR value. So far, the difference has only been negligible and SWR well within the tolerances of the MTR-3B.  Score!

I should note here that since I’ve started using an arborist throw line, I’m also able to hang antennas much higher than I could before. This has had a huge impact on all of my field activities.

Removing the SMA cap changes the EFT-MTR from a 40/20 to a 30 meter resonant antenna.

To be resonant on 40, 20 and 30 meters, the EFT-MTR requires a field modification. On the coil about 2/3 the way up the antenna, there’s an SMA connector with a small screw on cap (see above). When the cap is on (thus completing the connection) the antenna is resonant on 40 and 20 meters. You must remove the cap for it to be resonant on 30 meters.

Since I’ve been using the EFT-MTR, I start an activation on 40 meters (which is typically my most productive band), then move to 20 meters (typically, my least productive). If I have the time, or need the extra contacts to confirm a valid activation, I lower the antenna, unscrew the SMA cap, and raise the antenna again.

I thought at first this would be a major pain, but it hasn’t. Now that I’m using an arborist throw line, it’s super easy to lower and raise antennas. But even when I’ve used fishing line, it really hasn’t been an issue.

The only issue I see is I’m afraid I’m going to lose that little SMA cap in the field. To prevent this, I’ve made it a routine to immediately put it in the internal zippered compartment of the Booty Boss pack. I might find a source for those caps, though, just in case I still lose this one.

I’ve been very pleased with the EFT-MTR’s performance. I’m guessing it’s actually higher gain than my beloved EFT Trail-Friendly antenna. On my last activation with the EFT-MTR, I knocked out eight 40 meter contacts in about eight minutes during a period of poor propagation. Note that the MTR-3B was only pushing 3 or 4 watts of power.

I then moved to 20 meters where, frankly, propagation was so crappy I didn’t hang out there long. Instead, I lowered the antenna, removed the SMA cap, and started calling on 30 meters. Within a few minutes, I racked up the rest of my contacts.

I was very pleased with how quickly the Reverse Beacon Network picked up my CQs and was thus auto-spotted on the POTA website.

Conclusion?

If you own a Mountain Topper MTR-3 series transceiver, I highly recommend the EFT-MTR antenna. As with my EFT Trail-friendly and Par sloper, the quality is top-shelf. I expect the EFT-MTR will last even longer than the EFT Trail-friendly since the winder is so accommodating and the in-line coil is designed so that it doesn’t snag on branches as easily.

I’m looking forward to much more field fun with the MTR-3B and EFT-MTR combo!

Click here to check out the EFT-MTR at Vibroplex.

Click here to check out Vibroplex’s full line of antennas.

Many thanks again to Scott at Vibroplex for sending me the EFT-MTR for evaluation!