Friday, December 23, 2016

Death Valley CWT


As a brief respite from the Wisconsin winter, I drove out to Death Valley in early December. Among other things, this was my first test of the car camping radio setup.  It consists of the K3, end fed 40 M half wave antenna supported by an 11 meter carbon fiber fishing pole, antenna tuner, and an old netbook for logging. I added a couple 20 meter radials for 80 M operation. Power supply is a 33 Ah SLA battery and N8XJK voltage booster. I can recharge the battery in the car while driving, though it takes a while. Fortunately, the battery proved adequate for 3 hours of CWT operation without recharging.


My first western stop was at Willow Beach, on Lake Mohave, just south of Hoover Dam. While enjoying the nice weather there and relaxing after the long drive, I set up the station just to check everything out. Everything seemed to work fine, and I even made one DX contact on 20.


Willow Beach Campsite



Willow Beach Antenna

On to Death Valley, where I moved into campsite 139 in the Furnace Creek campground.  


Death Valley QTH

I think it was only really about 190 feet below sea level. Precise QTH was DM16nl. (36.46200,-116.87048; you can actually see the picnic table in the Google satellite view.)


Death Valley Station

Power Supply

Death Valley Site and Antenna

Shortly after I arrived was the ARRL 10 M contest. I made a 10 meter half wave wire, and strung it up more or less vertically. Conditions were predictably dismal, but somehow 32 operators managed to hear me over a couple hours of operation Saturday.

A few days later, I set up for the Dec. 14-15 CWT's. I put the antenna up Tuesday afternoon, as the 13Z CWT starts way before sunrise. Fortunately, winds were light. Unfortunately, some klutz stepped on the fishing pole and broke a section, so it was a couple feet shorter than usual. (Never, ever, lay your fishing pole on the ground!) I put the wire up in its usual configuration, supported by the pole about 5 meters from the far end, with monofilament lines from the ends to conveniently located mesquite trees just tall enough to keep the lines above head height. On 80, of course, the wire is only a quarter wave, so I expected some "RF in the shack", but it wasn't a problem.

Crawling out of the tent at 4:30 AM wasn't fun, but the antenna was still up. I heard nothing on 20, but managed to make 53 contacts on 40 and 80.  

It was a lot warmer at 19Z, though the sun made it hard to see the netbook screen. In spite of a little run on 20, I just ran out of stations to work, and ended up with just 43 QSO's. There were interesting echos on 20, and I even worked N5ZO on backscatter. I was briefly interrupted by a curious park ranger, whom I should have tipped off first. (She thought the bottom of the fishing pole was illegally buried in the ground. She probably didn't notice the fishing line in the mesquite. No trees were damaged in this operation, though those thorns are nasty.)

By 03Z, the hole was getting deeper. It was tougher than any of my QRP operations, save the one from that Utah canyon. Lots of loud, usually responsive operators just couldn't hear me at all. As far as I could tell, 100 Watts were coming out of the radio, but going nowhere. I think conditions were pretty good, though 40 started long and got longer. I expect there was lots of activity on 160, but I didn't bring that much wire. I ended up with 37 QSO's. As winds were forecast to pick up overnight, I took the antenna down in the dark, then walked the half mile over to the Furnace Creek Ranch to post the results.


It was an interesting operation, but it seems my favorite desert camping spots are poor for radio operating. At least there were no mosquitoes, and it was a lot warmer than Wisconsin in December. Perhaps in the spring, in addition to my QRP bicycle portable operations, I'll try some with the car camping station. Hopefully, I'll be able to find some places that aren't deep in holes in the ground.

Sunday, October 16, 2016

Canyon Country CWT

The KX1 and 11.5 M fishing pole came along on a recent trip to southern Utah.  Our base was a friend's vacation home on the Escalante River, near Calf Creek.  On Tuesday, four of us drove 60 km down the Hole in the Rock Road, did a nice hike to an arch, then camped just off the road in the Escalante Desert.  My plan was to try to operate the 13Z and 03Z CWTs without inconveniencing my companions too much.


Bonnie at Broken Bow Arch



13Z QTH

I put the antenna up in the evening, as I knew it would still be very dark at 13Z.  The terrain was fairly open, so I thought I might have a decent signal with the end fed 40 M half wave supported by the pole.


13Z View South


13Z View West


However, the only RBN station I could wake up was K2PO, near Portland, OR.


13Z RBN

So, with the first hint of daylight, I started on 40.  It was hard work, but I ended up with 37 QSO's and 36 mults.  I stayed on 40 until 1340Z, which was way too long, but I really didn't expect 20 to open up that early.  There was no DX, and working the east coast was tough.  Conditions weren't too bad and the antenna was in the clear.  I suspect all that rock and sand makes for very poor ground conditions, so the ground reflection probably wasn't helping much.

On the way back to the house, we did another hike to some slot canyons.  There was no chance to do the 19Z CWT.  I can do CWT's at home, but I can't do a hike like that!

Tunnel Slot Canyon


The house is right in the bottom of the Escalante River canyon, with high canyon walls in most directions, so I didn't expect much.  I did get the antenna up just before dark, and later set up the radio on the patio behind the house.



03Z QTH


03Z View West

03Z View Northwest


That canyon wall doesn't look that high, but it's actually well over 100 meters.  The horizon to the west was at about 30 degrees, though it was lower to the east.

A CME was just arriving at 03Z, so conditions were deteriorating.  Between that, the canyon walls, and lack of 80 meters, I didn't expect much.  I could't raise a single RBN station on 20 or 40.  I stuck it out for 45 minutes, and made just 18 contacts, thanks to some really, really good ears at the other end.  Apparently N0UR and W1UU took the night off, as I ended up with the high QRP score.