For decades, Joyce/K0JJW and I have working towards visiting all 63 of the US national parks. We are nearing the end of the list, with just a few parks left. One of the most challenging places to visit is the National Park of American Samoa, located in the only US territory south of the equator. That would be number 61 for us, with only Crater Lake NP and Lassen Volcanic NP left to visit.

Obviously, if we are going to travel to a distant island, we should consider doing a Slacker DXpedition. American Samoa is a US territory, so FCC radio licenses are valid there. It is also a separate entity for DXCC, with the prefix KH8. KH8 is listed at #87 (out of 340) on the Most Wanted list at Clublog, so it is a bit rare in terms of DXCC. Parks On The Air (POTA) has already been set up for KH8 and the national park there has been activated a number of times. I checked into the Summits On The Air (SOTA) situation and discovered there were summits that qualified for the program, but that a KH8 Association did not exist. The next thing you know, I am the KH8 Association Manager working with the SOTA Management Team to establish the KH8 association.

Travel

We usually try to pack light when traveling. On a typical airplane trip, we can generally get by with each of us having one carry-on bag. But once you add snorkel gear, camera gear, binoculars, hiking boots, radio gear, and a few other items, it becomes necessary to check a bag — or two. Still, we focused on keeping the amount of luggage to a minimum so we could navigate the airports without assistance.

To get to KH8, we connected through Hawaii, to catch the main flight to Pago Pago on Hawaiian Airlines. This flight only goes two or three times a week and is the only option coming from the 48 states. We decided to enjoy four days on the island of Kauai, which turned out to be an excellent idea.

Radio Gear

We normally only use frequencies above 50 MHz for SOTA, but given the lack of VHF activity in KH8, we compromised and took along HF gear. Our Icom IC-705 is a good choice for that as it also has the VHF/UHF bands included. We also packed a pair of handheld radios, which were useful for basic communications on and off the trail.

We had two main radio setups: a backpackable station for SOTA and a higher power station for POTA. Scoping out our likely SOTA summits, we definitely needed a compact station that could be carried up some summits that would involve a challenging hike. For this station, we used the IC-705 (10 watts output) driving an end-fed multiband wire antenna from PackTenna, supported by a carbon fiber fishing pole. The IC-705 does not have a built-in antenna tuner, so a small, manual external tuner did that job. A Bioenno 4.5 Ah battery supplied the power to the radio.

The antenna system travels in a small pouch and consists of the Z-match tuner, RG-174 coaxial cable, and the end-fed wire antenna. The antenna can cover 30m up through 10m, using a tuner, so it was an efficient way to cover the bands we planned to use.

With the remote location and QRP power levels, we concluded that SSB might be a limitation. Our solution was to utilize digital modes (FT8 and FT4) to enhance our weak-signal performance. I sometimes operate CW, but I don’t think I can handle the pileups we expected at KH8. Joyce doesn’t do CW at all. Our plan was to use my Windows laptop, running WSJT-X, for digital processing. I would have taken this computer along on the trip anyway, so it made sense to have it do double duty, even though it’s a bit large to carry up the summit—more on that below.

POTA Station

We could have used the SOTA station for POTA as well, and we did in a few situations. However, we opted to take along a Yaesu FT-991, with 100 watts output, thinking that would help us when running SSB and if band conditions are poor. This is our normal POTA radio, powered by a 20 Ah Bioenno battery that can supply 30 amps continuously, providing a decent margin for the FT-991 (max current spec is 23 amps). However, FAA regulations don’t allow large batteries to be taken on an aircraft. I am used to carrying smaller batteries while flying, so this was all new to me. The short story is that you can carry on two lithium batteries, each limited to 160 watt-hours. (Read the regulations carefully yourself to understand the fine points.) For a 12-volt battery, 160 watt-hours corresponds to 13 amp-hours. So maybe I could carry two 13-amp-hour batteries and get by with that. Well, the Bioenno battery, which is the closest in size (12 amp-hour) has a maximum continuous discharge of 20 amps, which is a little light for the FT-991 keyed down at full power. I was also worried about the battery capacity and how long we would be able to operate. (In retrospect, this approach might have worked and deserves further consideration in the future.)

Another option was to take an AC power supply along, which might have been useful, but AC power was not likely to be available at a typical POTA spot. Ultimately, our solution consisted of a power cable with battery clips that connect to the battery in our rental car. We already had our radio gear set up with powerpole connectors, so crafting a cable with battery clips and powerpoles on it did the job. From experience, I know that it is possible to get excited about making radio contacts and overlook the fact that your car battery is now depleted. To avoid this, I inserted a 12-volt power analyzer inline with the DC cable, allowing us to monitor the battery voltage. I was vigilant in monitoring the voltage and running the car engine regularly.

Rounding out the POTA station were two 25-foot lengths of RG-8X coax and an end-fed long wire antenna from MyAntennas. This antenna was needed to handle the higher power level of the FT-991. For antenna support, we used a SOTABeams 32-foot Travel Mast.

The National Park of American Samoa is POTA AS-0001. This park had already been activated 33 times, primarily by KB2FMH and KH8RRC. There are two other POTA parks in KH8 (both unactivated), but we did not operate from them.

Alerts and Spots

Our operating schedule was fluid, so we used the SOTA and POTA websites to post our activations once we decided to go out,  and to spot ourselves once we were on the air. Some of this could be done from our hotel room using an internet connection but at the operating location, we typically did not have a network connection.

We did have a Garmin Inreach satellite communicator that works anywhere on the planet, so we sent messages via the SOTAmat system. This requires some preplanning to set up access and learn the system but it performed well. The only disadvantage to this method is that Inreach messages can take 5 or 10 minutes to send, depending on when the satellite passes over.

Summits On The Air

Complete KH8 SOTA information can be found here in the Association Reference Manual:
https://www.sotadata.org.uk/en/association/KH8

There are 11 SOTA summits in KH8. Many of these are not accessible due to rugged terrain and dense tropical vegetation. The most accessible summits are listed below. See the SOTA database for more information and specific activation tips. In all cases, assume the trail condition can change and inquire locally for the latest information.

Tutuila Island

Olotele Mountain (KH8/TI-004) – Drive Up Summit.
Olotele Mountain is a developed radio site with multiple towers on it. There is a single-lane paved road to the top, making this a drive-up summit. This is the easiest summit in American Samoa. It is NOT in the national park.

Mount Alava (KH8/TI-003) – 3.9 miles one-way, 1300 vertical feet, in the national park.
This is a well-known summit and hiking trail, promoted by the national park. The trailhead is relatively well-marked, starting at Fagosa Pass. This trail used to be a road, generally wide but overgrown in spots.

Matafao Peak (KH8/TI-001) Steep trail, 1500 vertical, 1.5 miles one way
The highest summit in American Samoa. There are widely varying reports on whether the trail to the summit is hikeable or not. Trailhead is at Fagosa Pass. We did not attempt this summit.

Ofu Island

Tumu Mountain (KH8/MI-003) 3.0 miles one-way to the summit with 1500 feet of elevation gain. This trail used to be a road, generally wide but overgrown in spots, rope assist in one spot.

Let’s Go!

So that was the basic plan. Fly to Hawaii, hang out there for a few days, then continue on to American Samoa. Activate a few summits on Tutuila and then travel to Ofu Island to activate one more. Interspersed would be POTA activations, lots of snorkeling, and sightseeing.

More to follow in Part 2.

73 Bob KH8/K0NR

Side Note: Kauai SOTA

We were not focused on SOTA in Kauai, but I looked up what summits were available and discovered the answer to be quite straightforward. Out of the 11 SOTA summits on the island, only one has been activated: Nounou Mountain (KH6/KU-011). The rest are very difficult to access.

So Joyce and I decided to do the summit. As advertised, the trail turned out to be muddy and had some difficult sections requiring some minor rock scrambling. The weather was hot and humid, making this a good warm-up for KH8. In particular, I discovered that my SOTA station had serious EMI problems. I thought I had worked this out back home, but my notebook PC was producing a high level of noise that was interfering with the receiver, and the RF from the transmitter was disrupting the USB data connection. This messed up the activation of Nounou, but it caused me to work on the problem before arriving in KH8.

The workaround I came up with was to use my iPhone with the SDR-Control Mobile  app, connecting to the IC-705 via Wi-Fi. This eliminated the need for the USB cable, which was acting as an EMI radiator. The iPhone display is relatively small for running FT8, and the app has a few anomalies, but it did the job. On the plus side, the iPhone is a lot less to carry up a summit.

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