Black Mountain, W6/NC-150 with New Antenna!

Activation Date: 11 February 2018
Transport: Hike Distance: 5 miles
Elev. gain: 900 feet Hiking Time: 1.75 hours
Rig(s): MTR-3B, GD-77 Band(s): 30m, 20m, 40m (cw), 2m (fm)
Antenna(s): QRPGuys Portable Vertical
Cell Service: Fair (T-Mobile)
Parking: Monte Bello Open Space Parking Lot
Trailhead: South end of parking lot
Fees/Permits: None
Route: Canyon Trail, Bella Vista Trail, Monte Bello Road
Dogs: No  Toilet: Yes, TH and near summit
Antenna Support: Rocks, low trees RF Noise: Medium-low (HF), Very High (VHF/UHF)

I recently put together a new antenna, the QRPGuys Portable Tri-band Vertical.  I’ll be writing another post about this antenna specifically, but it’s a new product based on Joe Everhart N2CX’s design, published in a recent QRP Quarterly.  It’s a quarter-wave vertical on 20 meters, and uses switched inductors to work 30 and 40 meters.  It’s pretty lightweight and compact, and seemed like it might work well on summits without space for a full-size antenna.

I’d tested the antenna out in my back yard, but I wanted to get it up on a summit to see how it does with a real use scenario – a SOTA activation!  Black Mountain seemed like a good choice for this, since it’s local and a fairly quick hike.  It’s also a gently-sloped grass-covered summit, with soil not too dissimilar from my back yard.  Since I wouldn’t be bringing any SWR-measuring device, I wanted to keep things similar to the back yard setup to try and be easy on the finals of my MTR-3B.  In retrospect, it wouldn’t have been too much trouble to bring along my K6BEZ antenna analyzer.  I may do so on the next few summits, until I’ve seen what different ground makeup does to the SWR.

Anyway, Black Mountain would be it, so here we go.

Getting There

On my first attempted activation of Black Mountain, I’d brought just a small handheld (my Yaesu VX-2r), since I’d run to the summit through Rancho San Antonio – a round trip of over 10 miles and lots of elevation.  My first successful activation of this summit involved a short walk up to the summit from Black Mountain Backpack Camp. I was camping there as my “Winter Field Day” spot. It’s a nice little local place to get away from the city for a little backpacking.

For this activation, I decided to take the same route, coming from Page Mill Road, up past the backpack camp to the summit. It’s very beautiful.  The park officially opens a half-hour before sunrise, so I planned to be there around that time. As expected, when I arrived, the gate wasn’t yet open, but there was space on the side of the road to park.

Parked on Page Mill Rd, opposite the trailhead parking lot

The Hike

Starting out, the glow of dawn made the sky an assortment of rich colors, with the moon reflecting the sun’s approaching light.

Sun chasing the moon

Entering the trail at the south end of the lot, there’s immediately a fork. It doesn’t matter which way you go—you’ll end up in the same place at around the same time. I don’t know the name of this part of the trail, but it goes downhill to the Canyon Trail, and it’s got some amazing views.

A beautiful pre-dawn view

Once the trail meets with Canyon Trail, you’ll turn right and follow a creek for a bit. Then you’ll turn left at another fork to start your climb to the top, on the Bella Vista Trail.

Time to go uphill!

Once you near the top, there are multiple choices for getting to the top. You can stay on the trail, or jump over onto Monte Bello Road. I chose to get onto the road, to save a bit of time. I’d been a bit optimistic with the time I posted I’d be on the summit. I like to make it on time if possible.

Transitioning to Monte Bello Road

I’d seen quite a few deer on my way up—an advantage of going early in the morning before the majority of people have woken up. After I got onto Monte Bello Road, I saw a couple more deer. One of them made for a pretty striking silhouette in the middle of a “tree tunnel.”

Oh deer.

Shortly after getting on the road, I passed backpack camp. There were a few people at the individual sites, and what looked like a Boy Scout troop at the larger group site.  Right after passing backpack camp, the summit is in view.

Radio towers on the left, main part of the summit on the right

There are lots of antennas on this summit. I believe many of them are public service repeaters, telecom, etc. And of course, several of the BayNet repeaters are up here. As I discovered on my first attempted activation, the RF emitted up here makes it very difficult to do a VHF/UHF SOTA activation.  Now that I have a little more experience under my belt, however, I think I could make it happen.

Some of the Black Mountain radio towers

Just past where the towers are, is the main summit area. It’s a pretty flat summit, with a bunch of rocks one could sit on, or set up as a table for a little picnic. It’s also the primary area the many visitors of the summit like to hang out. I would not be setting up there.  I went onto a little spur trail leading to the east side of the summit. It still gets visitors, but has much less traffic. Also, I’d be taking advantage of the east-facing slope to help launch those signals nice and low/far.

Looking east along the spur trail from the main summit area on Black Mountain

Arriving at the end of the spur trail, I plopped my bag down and enjoyed the view for a moment. It would be the view I’d be enjoying for the whole activation, but sometimes it’s nice to just quietly absorb the moment.

Looking east over Silicon Valley

Setup and Operation

I’d already practiced setting up the new antenna in my back yard a few times. The last thing I want when I get to a summit is to be figuring out how I’m going to do something. It’s already enough work sometimes, figuring out where I’m going to put my 60+ft end-fed half-wave antenna.  At least in this case, I wouldn’t have to find a very big space for my antenna.  Being a vertical antenna, it requires only the 20 feet of horizontal space for its radials (the four radials are 10 feet).

I got the mast staked out using my new ice cream lid guying collar, and had the antenna vertical within about 5-10 minutes. Easy!

The operating position

I planned on doing 30 meters first, then 20 and 40 meters. Not sure why I like this order, but it works. I figure as long as I have a usual pattern/plan, my chasers will know what to expect.  I sat down and started calling CQ – no self spotting. I relied on the Reverse Beacon Network (RBN) and RBNHole (the automated SOTA spotter) to get spotted.

It seemed like it took a little longer than usual to get spotted, so I started doubting the antenna right away.  The poor thing. Of course, as the new piece of equipment you’d expect it to get some blame if things don’t go as planned. But more than that, I know it’s not a full-size antenna. And a shortened vertical with only four 10-foot radials can’t possibly perform well, right?  Wrong. It wasn’t long before the contacts started rolling in. I got four contacts on 30 meters, before switching to 20 meters and resuming there.

On 20 meters, I thoroughly checked to be sure the frequency was clear. It was. And it was fine for the first several contacts, but then I started getting a lot of QRM.  I couldn’t quite make out what was being sent, but another station or stations were working over me. Rather than change my frequency, I started including my call in a lot of the exchanges (i.e., chaser call de my call) to make clear who I was calling and that they were talking with me.  Through this QRM I managed to get DX with Jorge EA2LU over in Spain, and a summit-to-summit (S2S) with Keith KR7RK over in Arizona.  After a few more contacts there, I moved on to 40 meters to grab the “locals.”

On 40 meters, results were equally excellent. Reports were good, signals strong and clear. Of course, one of them was line of sight (hi Vic!), but the ones that weren’t came through nice and clear, too.  More importantly, the signal reports I was receiving were pretty good, too.  And I’m pretty sure most of them were honest.

The wire length is perfect for my “squid pole”

So far, I’d have to say this new antenna is a really great option for summits where I can’t or don’t want to set up the full-size half-wave antenna. I need to do some more testing, seeing how the antenna does on summits with different soil composition (or no soil composition), such as some of the rocky granite and volcanic peaks I’ve done.

I got a couple of contacts on 2 meters while packing up and starting the hike back down. I found that if I got on the west side of the towers, there was a lot less interference, and I could still see San Fransisco and Oakland. The hike back down was pleasant. I even talked to a guy whose father had been a ham and now wanted to get back into the hobby at the age of 90. I sent him some info to get things started.

Thanks to all the chasers!

Activation Log

Time Call Band Mode Notes
15:45z W0MNA 10MHz CW
15:51z W5ODS 10MHz CW
15:53z WG0AT 10MHz CW
15:55z W0ERI 10MHz CW
16:00z KA5PV 14MHz CW
16:03z NE4TN 14MHz CW
16:04z KX0R 14MHz CW
16:05z EA2LU 14MHz CW  Spain! TU Jorge!
16:07z K4MF 14MHz CW
16:14z KI4TN 14MHz CW
16:14z K3TCU 14MHz CW
16:15z KR7RK 14MHz CW
S2S! W7A/SC-014
16:19z KG3W 14MHz CW
16:21z N7WM 14MHz CW
16:22z AC7P 14MHz CW
16:24z WW7D 14MHz CW
16:25z W7RV 14MHz CW
16:34z N7LP 7MHz CW
16:36z AB6SO 7MHz CW
16:37z NS7P 7MHz CW
16:42z NW7E 7MHz CW
16:43z NG6R 7MHz CW
17:02z N6NKT 144MHz FM
17:06z KD6GGJ 144MHz FM

Map

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