Showing posts with label SOTA Goat. Show all posts
Showing posts with label SOTA Goat. Show all posts

Sunday, December 10, 2017

The Road to Mountain Goat: A Retrospective

I've been working on making Mountain Goat since 2013, having only accomplished that achievement last month.  Many things occurred in that time, including a combat deployment to Afghanistan (N0PCL QRT during that time), re-learning CW, many antennas used and broken, many miles hiked, summits gained, and hours on the radio.
So, this happened.

So, having harvested the data on the SOTAData web site, my own logbook, and my own recollections, here's a bit of a look back.

Total QSOs:  1396
Total Points:  1005
Total Unique Summits where a QSO was made:  99
Total Summits (Includes summits visited more than once): 154
Total Failed Activations without a single QSO:  2 (White Mountain Peak, W6/CD-001.  Great hike, though, and Half Dome, W6/SN-040.  Half Dome was also an amazing hike.)
Total Summits with 1-4 QSOs (enough to activate, but not enough for points):  4

Screen-capture of my SOTA Goat App on my iPhone, showing most of the peaks I've activated.  A couple of the peaks have been de-listed for various reasons, so it's not a complete list.
A view of most of the summits in the Southern California area, from SOTA Goat.
View of the string of activated peaks along the Eastern Seaboard.  From SOTA Goat.
QSOs By Mode:

CW QSOs:  903 (65%)
FM QSOs:  183 (13%)
SSB QSOs:  310 (22%)

Learning point:  I started SOTA with SSB and CW, but my radio skill exponentially improved once I gave CW a go.  After MG was achieved, it made up basically 2/3rd of my total QSOs.  It also tends to be much more efficient at QRP power levels, and is generally much more unobtrusive on busy summits (you can sit there with a notepad, a key, and earbuds quietly hamming away without making noise or drawing attention to yourself).  It's also lots of fun.

Incidentally my longest-distance contact while activating a summit was from Middle Peak (W6/SC-024) in Southern California.  I had a CW contact with OH9XX on 12 meters using CW.  OH9XX was in Finland, 5583 miles away.  My power output:  2.5 watts.  Miles per milliwatt of power: 2.2.

So, from Southern California, I made contact with a man in Finland, by burning long-wave photons off of a piece of metal, bouncing those photons off the a section of the atmosphere that was ionized by the sun's ultraviolet light.  Those photons excited electrons on another piece of metal in Finland, where those electrons were amplified and converted to sound waves sufficient for two-way communications--using as much power as required to power a flashlight.

Amazing.

My shortest QSO was probably with WA6NVL, on Dictionary Hill (W6/SC-366).  He heard me on his HT, climbed up the hill I was on, and met me.  It was probably a contact that was less than a quarter mile.  It was on 2 Meter FM.

QSOs By Band:

80 Meters:  2 (<1%)
40 Meters:  177 (13%)
30 Meters:  136 (10%)
20 Meters:  621 (44%)
17 Meters:  100 (7%)
15 Meters:  44 (3%)
12 Meters:  101 (7%)
10 Meters:  30 (2%)
6 Meters:  3 (<1%)
2 Meters:  165 (12%)
1.25 Meters (222 MHz):  5 (<1%)
70 centimeters:  12 (<1%)

I've had the fortune of making activation contacts on every band from 80 Meters through 70 centimeters, except 60 meters.  My SOTA transcievers, an FT-817ND and a VX-8DR, both from Yaesu, allow exceptional frequency agility, which I have found useful.  The only reasons I haven't made contacts on other bands is because I don't have a radio that will support that (on frequencies above 450 MHz), or I don't have an antenna that allows it (on 60 and 160 meters).  I'll see about rectifying that in the future.

I was surprised at the amount of time I gave to WARC bands (30, 17, and 12 meters).  I actually made more contacts on each of those bands than 80, 15, and 10 meters combined!  This was, in part, likely due to the 12 Meter Challenge, which was popular some time ago in the SOTA world.  I also really, really like 30 an 17 meters, too, since those bands have many similar characteristics to the neighboring 20 and 40 meter bands, but they're never plagued with contest activity.  The WARCs seem a bit more gentlemanly.

All of my SOTA activations on VHF and up were FM or SSB.  All QSOs on 2 meters and up were via FM.

I'm becoming more and more interested in VHF and UHF operation, particularly weak signal and satellite work.  In the future, don't be surprised to see me try to activate some summits on those higher frequencies.

QSOs by Countries/DXCC Entities:

96.7% of all QSOs were with other stations in the continental United States.  1.93% were with Canadian stations.  The remainder were countries spread out in 11 other DXCC entities.


From Southern California, I managed to reach Canadian, German, and Finnish stations.  The rest of the DXCC entities were contacted from mountains along East Coast of the US.

Activators:

Phil, NS7P, Gary, W0MNA, and his XYL, Martha, W0ERI, were my top chasers.


Associations:

Here's a list of the associations and regions I've activated in:

890 QSOs (64%) were from the W6 association.  421 QSOs (30%) were from W4V.  6% were spread among K0M, W0C, W1, W3, W7A, W7W, and W9.

543 (54%) of my points were from W6.  394 (39%) were from W4V.  The rest, 68 points (7%) were from the other associations.

Personal Notes:

  • Favorite QSO:  Mentioned above, with OH9XX.
  • Favorite Hikes:  There are many.  My favorites are, in no particular order:  Mt. Badon-Powell (W6/CT-004), Alabama Hills (W6/SS-442), Robertson Mountain (W4V/SH-011), Rocky Mount (W4V/HB-035), San Gorgonio (W6/CT-001 & W6/CT-243), San Antonio (W6/CT-003), Thomas Mountain (W6/CT-016), Cahuilla Mountain (W6/CT-103), Knob Mountain (W4V/SH-017), and Pilot Knob (W6/SD-435).
  • Least Favorite Hike:  Pt. 6020 (W6/SD-017).  This peak was a bushwhack through thorns and scrub.  It was barely doable.
  • Easiest Hike:  Probably La Cumbre Peak (W6/SC-086), but there are others that are incredibly easy.
  • Most Challenging Hike:  Pallett Benchmark (W6/CT-058), or maybe San Gorgonio (mentioned above).
  • Most points earned in a weekend:  48.  From 18-20 April 2014, I activated Onyx Peak (W6/CT-044), Keller Peak (W6/CT-013), Delamar Mountain (W6/CT-050), Bertha Peak (W6/CT-054), Mount Williamson (W6/CT-011), and Pallett Benchmark (W6/CT-058).
My wisdom learned from the whole thing:

  • Persevere.  Don't Give Up.  Mountain Goat is one of the most challenging amateur radio activities in existence.  It's very physical, demands, high levels of operator skill, is technically challenging, and can be frustrating.  Just keep improving.
  • Analyze your failures, and be objective about them.  Need to improve your hiking shape, or learn CW, or find alternative methods of spotting?  Do it.
  • Have fun.  It's immensely satisfying.
N0PCL and the XYL, on the summit of Alabama Hills, with Mount Whitney, in the background.


Saturday, November 4, 2017

November Shack Update

Greetings, all.

Things have been continuing in the N0PCL ham shack.

First, on the award front...

While I haven't submitted my official applications for the following awards, I have sufficient confirmations for the following:
  • Worked All States (mixed band and mode, CW, phone, digital, Triple Play, and 40 meters.)  I'm three states away from WAS on 20, too, needing only Maryland, Delaware, and Connecticut.
  • DXCC (mixed band and mode, CW, and 20 Meters.)  I've got 91 total countries on digital modes, and 86 on phone.  And I've got 84 countries on 15 meters and 79 on 40 meters.  So I'm getting there.
In addition to the above, I've got 96 Maidenhead locators on 6 meters, using only a dipole in the attic and 100 watts.

And, perhaps my biggest near-achievement is SOTA Goat status.  I'm currently sitting at 999 points out of a necessary 1000.  My conundrum there is that I've basically activated all the peaks in my local area this year, so I need to go further afield.  I should be visiting my parents over the upcomin holiday season, so I may attempt an activation of Holy Hill (W9/WI-031) or one of the other "mountains" in southern or western Wisconsin.  Holy Hill will put me at 1,001 activator points.

In other news, I've built an APRS fill-in digipeater and iGate at my home QTH.  It doesn't get a huge amount of traffic--I'm mostly filling in APRS packets along a 25 mile stretch of I-95 between Fredericksburg and Woodbridge.  I'll do a write-up on that in the near future.  I used a rarely-touched FT-2900R, a TinyTrak4 from Byonics, and some free software.  Pretty simple stuff.

73

Thursday, February 11, 2016

SOTA Activations with FM Equipment


For the SOTA Activator, working on FM presents its own challenges, equipment options, and techniques.

Challenges affecting the FM operator are many.  You are generally limited to radio line-of-sight communications.  You are often limited to low power levels (5 watts or less, usually).  There are some good antennas out there for portable FM operations, but most are not supplied with the handheld radio.  There can also be battery limitations (affecting range, power, and life).

There are basically two ways to deal with these challenges:
  • Equipment
  • Operator skill
First we'll handle the equipment.

For many, the entry into the ham radio hobby is the purchase of a 2 Meter FM radio.  Given how the market is segmented between 160-6 Meter all-band all-mode radios, and the 2-Meter FM & Dual-Band FM radios, this is understandable.  I'm not speaking to the wisdom of this, but it's a fact of life.

This basically means that there's a lot of 2-Meter FM gear out there, and lots of hams with Technician tickets.

Many newer hams will start out buying one of the very inexpensive Chinese radios (Baofeng, Wouxun, etc.), often for less than $40.00.  All I can argue is that you get what you pay for.  Some hams like these radios because they're so inexpensive.  They're practically disposable--if you break one, lose it, or it fails, it's not a big financial hit to your pocketbook.

However, these inexpensive radios also have documented spectral purity problems in the transmitter (meaning that they don't transmit clean signals), and often the receivers in them are prone to poor selectivity, which means they have an increased tendency to receive signals you don't want to hear.  (This can be particularly annoying on SOTA peaks which have other radio transmission facilities on them.)
Antennas can be common on many peaks and can make an unwelcome contribution of radio frequency interference.  These antennas are atop Mount Wilson in the range north of Los Angeles.
My recommendation?  You are looking for a good "starter" 2-meter handheld radio, I recommend buying one of the radios from one of the "big 3" Japanese radio manufacturers:  Icom, Kenwood, or Yaesu.  Alinco is also a reasonable brand.  Why?  Because these manufacturers have been building handheld radios expressly for the amateur market for literally decades, and you can't replicate that experience.  These radios are well supported with excellent documentation.  They have solid transmitter and receiver characteristics, and, additionally, they are reasonably inexpensive.  The Kenwood TH-K20A is a full-featured 2 Meter handheld radio available for about $140.  The Yaesu FT-277R is a radio in the same class as the TH-K20A, and it's available for about $130.  These are incredibly reasonable prices given the quality of these radios, and the fact that they will likely give you years of reliable service.  There are equivalent radios from Icom (for a little more money) and Alinco (for a little less).

There are other handheld radios which offer APRS capabilities (which can be useful for SOTA spotting as well as allowing chasers to watch your ascent), as well as various digital voice modes.  These radios can be a bit more expensive and are probably better for more experienced hams.

Next, you'll likely find that the supplied "rubber duck" antenna is inadequate for lots of situations.  The reason is the fundamental reality that all antennas are a compromise between performance, size, and cost--and you can really only maximize one or two of those variables at a time.  Do you desire a small, high performance antenna?   You'll probably have to pay a bit for it (either with time or money).  But in any case, if you're activating a SOTA peak with only FM gear, I strongly consider purchasing or building a better antenna than the "free" antenna that's supplied with the radio.

You have a few options that basically break down to homebrewed and purchased antennas, and omnidirectional and directional antennas.
  • Homebrewed omnidirectional antenna:  Build a 2-meter "slim jim" antenna.  You can hang this in a tree or from another non-conductive surface and get omnidirectional performance roughly equivalent to that of a vertical dipole or a j-pole, which is several orders of magnitude superior to the supplied antenna.
  • Purchased omnidirectional antenna:  Buy a "slim jim" antenna.  There are numerous manufacturers of these antennas.  Alternatively, you can buy a telescoping 2 Meter 1/2 wave whip antenna.  (I use one, from Smiley Antenna Company.)  You can purchase a 1/4 wave or a 5/8 wave antenna, but 1/2 wave antennas usually outperform these.
  • Homebrewed directional antenna:  Build a tape-measure antenna. 
  • Purchased directional antenna:  There are really two portable options in this area:  An Arrow Antenna or an Elk Antenna.
Get an appropriate length of cable, and possibly an SMA-to-BNC adapter (if needed), and you're in good shape.  Consider purchasing an additional battery pack and you're well-equipped for 2-Meter FM work from a summit.

Now, we'll tackle operating skill.

You can have a successful summit activation using only FM.  You chances will be greatly improved if you do the following:
  • Let other hams know that you're going to activate a particular peak.  Tell them when, and where.  You can let other hams in your local area know you're going to do an activation, and hopefully they will monitor the frequencies you'll be working on.  Additionally, you can post an Alert to SOTAWatch so that other hams in the area of the activation will be able to listen for you.
  • Self-spot.  Hopefully the activation location will allow you to self-spot to SOTAWatch so that other hams will be able to know of your activation in real time.  There are several techniques for this.  You can use the APRS2SOTA or the SMS2SOTA gateways, use an app on your smart phone, or alternatively, you can ask a local ham that's SOTA-savvy to spot on your behalf.
  • If you're going to activate using only FM, it's best to activate a peak in an area with lots of FM activity.  Peaks near major metropolitan areas (like Los Angeles, for example) lend themselves to this.  Additionally, activating during a VHF contest can be helpful.  (Just make sure you note your maidenhead locator that the peak is in!)  Operating during an ARRL Field Day can also a be a great opportunity for this.
  • Pick a good band.  If I'm doing an FM-only activation, odds are that I will be most successful making QSOs on 2 Meters.  That band is just used more often than 6 meters, 1.25 meters, 70 centimeters, 33 centimeters, or 23 centimeters.  I have made FM QSOs on 6, 1.25 meters, and 70 centimeters, but 2 meter FM QSOs outnumber these by many orders of magnitude. 
  • Pick a good frequency.  I almost always use national calling frequencies.  For 2 meters, it's 146.52.  (Other FM calling frequencies are:  52.525, 223.5, 446.0, and 1294.5 MHz.  The 33 centimeter band doesn't have a national calling frequency, but there are local frequencies that are sometimes used on this rarely-used band).  If 146.52 is busy, I sometimes use 146.55 or 146.58, but they have fewer stations monitoring them.  Remember, if communicating for a SOTA activation, you can only count QSOs that are simplex.  (Ok, technically you can also use satellites, but these are almost never used.)  I also frequently monitor 146.52 at home while I'm having fun on HF, in case somebody would like to have a VHF FM QSO.
  • Pick a good time to activate.  Generally, activating on a weekend or some federal holidays is better than activating during the work week.  If you must activate during a work week, activating during commuting times often is good because numerous mobile stations are equipped with FM gear.  Lunch time is also good.  Activating at night usually doesn't work well.
  • If you're having trouble with getting the required 4 QSOs to earn points for a SOTA activation, you can attempt to make contact with a station on a local well-used repeater, and then QSY to a simplex frequency to make the required contacts.  This, of course, requires that you know how to use your radio (including frequency entry, and possibly use of CTCSS or "PL" tones, or rarely, Digital Coded Squelch (DCS).  You should also know the repeaters in the locale of your activation so you have some options.  The ARRL repeater director is a great resource for this.  There are also numerous smartphone apps that can assist with finding repeaters.
  • Your specific location on a peak can make a huge difference in how well your signal is communicated.  If you're having trouble getting the necessary QSOs on one side of a summit activation zone, try moving to a different location.  A small shift of a few dozen feet can sometimes greatly affect the radio line-of-sight and therefore enhance (or degrade) communications.
  • Most FM operators have their squelch adjusted so that you only hear stations that manage to break through the static.  This is fine, but sometimes you can hear weaker stations if you decide to cope with the static by reducing the squelch.  Some radios have a button which cancels the effect of the squelch temporarily.  Consider these options.
  • Keep your contacts short, and be persistent.  Normal FM operating procedures apply, but don't hesitate to let people know that you're activating a SOTA peak.  When announcing your presence on a frequency, you could say something like this:  "This is N0PCL, November Zero Papa Charlie Lima for a Summits On the Air Activation atop Mount Wilson.  Is there anybody listening?"  Calling "CQ" is generally frowned upon using FM.  Bob, K0NR, has written an excellent FM operating guide for the new ham.
  • Don't forget to write down the date, time callsign, frequency, and signal report for each contact, and then log those contacts on SOTAData.
That's basically it.  If you have a portable FM rig, you can have a successful SOTA activation, but you need to make sure that you are properly equipped and make use of appropriate techniques.

Friday, October 16, 2015

Pilot Knob (W6/SD-435) Activation Report and WLB-817 Battery Pack Review

I activated Pilot Knob (W6/SD-435) back on 11 October..  It's a lowly one-point peak near where the California, Arizona, and Mexican borders meet.  I described a bit about the mountain here.

Some great information on accessing the peak is in this PDF document.

Getting there:  As described on pages 66-68 of the above PDF document.

On a previous activation attempt, I tried to climb using the more direct route along edge of the quarry on the north side of the mountain, but I lost the trail and I ran out of time due to other commitments later in the day.  I decided to instead make an attempt climbing the western slope of the mountain, attempting to use the loop trail described in the book, except I would do an out-and-back hike instead of a loop in order to shorten the hike.  I entered the location of the trail head into my Garmin and went there.
Overexposed pic of trailhead.  Lat/Long:  N32 44.065" W114 45.450, looking east.  Sun was rising, hence the overexposure.

At that location I noticed two trails:  One of the left/north, and one of the right/south.  Given that I was going to do the out-and-back route, I selected the left trail and started climbing.  The climb was steep but the well-defined trail made the route simpler, until I reached the crest of the first ridgeline.  Here the trail disappeared.  I ended up shifting to the left (north) a bit, and ultimately found a draw which led to a false summit.  This false summit was at the far end of the east-west ridge which makes up crest of the mountain.  From this spot the going was a bit easier, with numerous trails visible and with the summit in view.
The mountain was made of a mixture of sharp granite and a softer conglomerate (I think).  The softer rock eroded away in places, leaving holes and small caves.  Bats, which I had noticed on my first attempted climb, probably live in many of these small caves.
This cairn was located at the false summit.  My APRS capable handheld's packets were first picked up at this point.
The ridge from the location of the false summit, leading to the peak.  Yuma, Arizona can be seen beyond the mountain.
The hike on the ridge was a good bit easier.  Less steep, and the ground was a firmer granite than the softer rock leading to the false summit.
Getting closer to the summit.  A Gipfelkreuz!--although not as ornate as those in the Old World.
The Summit Cross was made of wood, and appears to be installed into the foundation of the old KIVA television transmitting tower.

Having reached the summit, I quickly deployed my end-fed wire antenna and commenced making contacts using the FT-817ND and the VX-8DR.  Propagation was actually not too bad, given the conditions.
Even with conditions only so-so, I commenced making numerous contacts throughout the US, using both SSB and CW.  I also attempted contacts on 50, 144, and 222 MHz, but no takers.  I did make contact with a ham in Yuma on 446.0 (K7ACS), who also ran an APRS digipeater that received my packets.
  
My Pilot Knob activation log on SOTAData.

As for my spotting technique, I self-spotted using the web browser on my phone.  I could have easily self-spotted using APRS, SMS, SOTA Goat, and likely the Reverse Beacon Network.  AT&T cell signals were plentiful, and APRS coverage, once on the summit and out of the draws, was fine:
My APRS breadcrumbs from the false summit leading to the summit.
At the false summit, by APRS packets were received by the BAJA digipeater, perhaps 50 miles away.  I am N0PCL-7.
At the summit, my APRS packets were received at the K7ACS digipeater.  I worked K7ACS on 446.0 during the activation as well.
The view into Mexico from the summit.  The US-Mexican border is very visible.
Having completed the activation, I started my hike down.  Having more of a bird's eye view while on the summit made route selection a bit easier.  I simply picked a prominent trail that headed west down the mountain.  Given how easy the descent was, I recommend that future activators use the following coordinates as your trail head:  N 32 44.050", W114 44.090".  That will place you approximately one draw to the north of the trailhead I used for this activation, and it will make navigation to the summit much easier!  Simply go to those coordinates and hike up the well-defined and well-ducked trail.

A few other notes for a future activation:
  • You are operating very close to the Mexican border.  The place is crawling with Immigration and Customs Enforcement (ICE) officers.  I recommend you carry identification on your person in order or alleviate suspicions that might ruin your activation attempt.
  • It's a short hike, and not too strenuous, but I still recommend you bring a good amount of water.  On the day I hiked this peak, it was in the mid-80s before the sun came up, and there's not much shade (no shade, actually).
Lastly, I promised a review of the WLB-817 battery pack that I had installed in my FT-817ND.  The battery performed marvelously.  Battery voltage barely dropped, even when transmitting a full 5 watts of power on CW during the five long "dahs" of the "0" in my callsign.  I suspect that there's power for several more activations in a single battery charge.  I'm very happy with this purchase.

Wednesday, September 23, 2015

Lessons Learned: Spotting Techniques on Half Dome (W6/SN-040)

Climbing the cables.  It's a confidence-building experience.  XYL Photo.

Success results from experience.  Experience results from failure.  With that maxim in mind, I'm going to describe both successful and unsuccessful SOTA activations with the aim of reducing the "experience" needed to become a successful SOTA activator for the new-to-SOTA ham.

In summer 2013 my XYL and I (along with some family friends) took a summer camping vacation to Yosemite National Park, with a climbing of the famed Half Dome (W6/SN-040) as the pinnacle event of the trip.  For those that haven't climbed this peak, it's a bit of an experience.  Our hike took us up the Mist Trail, followed by the hike to the Sub Dome, the climbing of the cables, and then the summit.  We decided to return by following the John Muir Trail, not the Mist Trail.

Part of our party moving up the Mist Trail.  XYL photo.

One of the falls along the Mist Trail.  XYL photo.
At the time I was carrying my Yaesu FT-817ND, stock internal batteries, the hand mic, and the SuperAntenna MP-1D portable vertical antenna.  I didn't have an HT at the time.  I also had my 10 Essentials and my iPhone 4.  Take note that I didn't carry a CW key, as I wasn't proficient at CW at the time.  I didn't have an APRS capability.  I only had the '817 with hand mic.  The combination of equipment allowed me phone (SSB & FM) operation on 40 Meters through 2 Meters, plus 70 cm.

This was early in my SOTA career--I had a successful activation prior to this.  Notably, I completed an activation of Mt. Baldy (aka. Mt. San Antonio, W6/CT-003).  Still, this was my second attempted activation.  It was a rather ambitious peak to activate, too!

Baldy / Mt. San Antonio - My first activation!  Not too bad.

The hike up was memorable--indescribable, actually.  The Mist Trail is utterly beautiful, and climbing the cables to the top up 50-degree-steep slick granite is a surreal experience.  I was very excited to get to the top!

A permit is required to climb Half Dome.  XYL photo.

N0PCL and XYL in a photo at the bottom of the cables.  XYL photo.
XYL used a climbing harness and carabiners for safety.  Me?  I don't need safety.  I just carefully climbed.   XYL Photo.
N0PCL pulling himself up the cables.  My gloves are just gardening gloves.  XYL photo.
It's steep.  XYL photo.
After getting there, I set up my station and started calling "CQ SOTA" on 14.3425 MHz--one of the more common phone frequencies used by SOTA activators.  No one returned my call.  I pulled out my cell, and though I had several "bars" of signal strength, I had no cell phone data connectivity.  I didn't know about the SMS-to-SOTA gateway, either.  So I returned to the radio, hoping--praying that somebody would hear me.  I put out an Alert on SOTAWatch with my expected frequencies.  And I was on the summit at the Alerted time.  But still...

N0PCL calling CQ on Half Dome.  XYL was being understanding.  XYL photo.

Static.

I tuned up and down the bands.  I heard pileups.  I heard a Boy Scouts special event station.  I tried calling them.  No joy.  Nobody heard me.

N0PCL trying VHF.  No joy.  XYL photo.

I tried 40 Meters.  15 Meters.  10 Meters.  Even 6 Meters, 2 Meters, and 70 cm.  FM and SSB.  Calling frequencies.  Other frequencies.  Scanning.  Everything.

Nothing but static.

My family and friends were kindly waiting for me to complete my quest.  My XYL came up to me after some time (she had gone out searching for USGS survey markers), and she asked "How many do you have?"  She was asking about the number of QSOs completed.

Zero.  Zilch.  Nil.  Nada.  Nichts.  Nothing.

After spending perhaps an 75 or 90 minutes trying, I gave up.

A failed activation.  Completely failed.  Not a single QSO.  Not even a partial QSO.  Nothing.

Looking back, I don't think the failure was of my equipment.  It was a failure of operator skill and poor planning.  Perhaps propagation played a part of it, but I doubt that--I was hearing many stations out there.

I was a new SOTA activator--very new, actually.  I didn't realize how important a self-spot was to a new SOTA activator.

The deck is already stacked against the SOTA Activator.  He or she is almost always running QRP power, using a portable makeshift antenna, carrying his own equipment, and very subject to other considerations (weather, other people, critters, daylight, leaving enough time for hiking off the summit, etc.)  I know that self-spotting is forbidden in most contests--and that's fine and good.  But SOTA isn't a contest--it's an award's scheme.  The SOTA Activator needs every advantage he or she can get.  Self spotting therefore helps a great deal.

There are numerous self-spotting methods available:
  1. A cell phone with data connectivity can spot using either the SOTA Goat app, or another app. 
  2. Alternatively, you can load the SOTAWatch website and self-spot that way.
  3. A phone with SMS (texting) capability can assist with self-spotting provided you've registered to access the SMS-to-SOTA Gateway.
  4. A 2 Meter APRS-capable radio can also assist with self-spotting using the APRS2SOTA Gateway, provided you've registered.  The FT-817ND, by itself, does not have this capability.  But it could work using the WolphiLink interface and an Android smartphone.  Or you can just get an APRS-capable HT.  (I now carry a Yaesu VX-8DR.  But the Kenwood TH-D72A performs great.  Or you can pair up the WolphiLink with an inexpensive Yaesu, Icom, Kenwood, Alinco, or one of the new Chinese HTs, like a Baofeng or Wouxun).
  5. A proficient CW operator can self-spot using the Reverse Beacon Network (RBN), provided a SOTAWatch Alert has been posted for approximately the correct time.
  6. Lastly, you can completely negate the requirement for a self-spot if somebody can provide a spot for you.
From this list, it's clear to me that option 3 above, possibly option 4, and almost certainly option 5 could have worked on Half Dome.  Options 1 & 2 would not have worked there because of the lack of cell data access on Half Dome.

To be sure, some prior planning would have been required.

You need to register for SMS-to-SOTA and APRS2SOTA for those gateways to work.  Proficiency in APRS operation can be tricky at first, too.

To make RBNGate work, you also need to register for the SOTAWatch site and post an Alert there, and be proficient enough for CW operation.

I did several training hikes to get ready for the Half Dome trek.  But I neglected to appropriately prepare myself for the radio portion of the activation.

Lesson learned.  I've used all of the above listed self-spotting methods.  It's best to ensure you always have an option.  Then the SOTA chase can begin...

Still, hiking Half Dome was a tremendous experience.  I highly recommend it, and I hope to get the chance to reattempt an activation of that peak.

N0PCL enjoying a beer after the hike.  XYL photo.

Let me know if you have any questions, experience, or advice in the Comments Section below.

73.